Release v0.0.5 (#38)

Fix files never downloading (unless it has been downloaded in the past
and using `!` force flag).

The logic should be:

* If file does not exist, or `!` force flag used, then download it
* Else if neither `!` or `:open` flag used, then error out

and then return downloaded-message or open-and-message.

I.e. `:open` should still open the file if it has already been
downloaded. Otherwise the only way to open it is to use `!` and
re-download it.

.github/workflows/ci.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout code
-      uses: actions/checkout@v1
+      uses: actions/checkout@v3
       with:
         submodules: true
     - name: Install Rust
@@ -35,7 +35,7 @@ jobs:
     runs-on: ${{ matrix.platform }}
     steps:
     - name: Checkout code
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
       with:
         submodules: true
     - name: Install Rust
@@ -45,7 +45,7 @@ jobs:
           override: true
           components: rustfmt, clippy
     - name: Cache cargo registry
-      uses: actions/cache@v1
+      uses: actions/cache@v3
       with:
         path: ~/.cargo/registry
         key: ${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "iamb"
-version = "0.0.3"
+version = "0.0.5"
 edition = "2018"
 authors = ["Ulyssa <git@ulyssa.dev>"]
 repository = "https://github.com/ulyssa/iamb"
@@ -10,25 +10,27 @@ description = "A Matrix chat client that uses Vim keybindings"
 license = "Apache-2.0"
 exclude = [".github", "CONTRIBUTING.md"]
 keywords = ["matrix", "chat", "tui", "vim"]
+categories = ["command-line-utilities"]
 rust-version = "1.66"
 
 [dependencies]
+bitflags = "1.3.2"
 chrono = "0.4"
 clap = {version = "4.0", features = ["derive"]}
+css-color-parser = "0.1.2"
 dirs = "4.0.0"
-futures = "0.3.21"
+emojis = "~0.5.2"
 gethostname = "0.4.1"
-matrix-sdk = {version = "0.6", default-features = false, features = ["e2e-encryption", "sled", "rustls-tls"]}
+html5ever = "0.26.0"
+markup5ever_rcdom = "0.2.0"
 mime = "^0.3.16"
 mime_guess = "^2.0.4"
-modalkit = "0.0.9"
+open = "3.2.0"
 regex = "^1.5"
 rpassword = "^7.2"
 serde = "^1.0"
 serde_json = "^1.0"
-sled = "0.34"
 thiserror = "^1.0.37"
-tokio = {version = "1.24.1", features = ["macros", "net", "rt-multi-thread", "sync", "time"]}
 tracing = "~0.1.36"
 tracing-appender = "~0.2.2"
 tracing-subscriber = "0.3.16"
@@ -36,5 +38,17 @@ unicode-segmentation = "^1.7"
 unicode-width = "0.1.10"
 url = {version = "^2.2.2", features = ["serde"]}
 
+[dependencies.modalkit]
+version = "0.0.11"
+
+[dependencies.matrix-sdk]
+version = "0.6"
+default-features = false
+features = ["e2e-encryption", "markdown", "sled", "rustls-tls"]
+
+[dependencies.tokio]
+version = "1.24.1"
+features = ["macros", "net", "rt-multi-thread", "sync", "time"]
+
 [dev-dependencies]
 lazy_static = "1.4.0"

README.md

@@ -21,7 +21,7 @@ website, [iamb.chat].
 Install Rust and Cargo, and then run:
 
 ```
-cargo install iamb
+cargo install --locked iamb
 ```
 
 ## Configuration
@@ -48,16 +48,16 @@ two other TUI clients and Element Web:
 |                                         | iamb        | [gomuks] | [weechat-matrix] | Element Web/Desktop |
 | --------------------------------------- | :---------- | :------: | :--------------: | :-----------------: |
 | Room directory                          | ❌  ([#14]) | ❌       | ✔️                | ✔️                   |
-| Room tag showing                        | ❌  ([#15]) | ✔️        | ❌               | ✔️                   |
-| Room tag editing                        | ❌  ([#15]) | ✔️        | ❌               | ✔️                   |
+| Room tag showing                        | ✔️           | ✔️        | ❌               | ✔️                   |
+| Room tag editing                        | ✔️           | ✔️        | ❌               | ✔️                   |
 | Search joined rooms                     | ❌  ([#16]) | ✔️        | ❌               | ✔️                   |
 | Room user list                          | ✔️           | ✔️        | ✔️                | ✔️                   |
 | Display Room Description                | ✔️           | ✔️        | ✔️                | ✔️                   |
 | Edit Room Description                   | ✔️           | ❌       | ✔️                | ✔️                   |
 | Highlights                              | ❌  ([#8])  | ✔️        | ✔️                | ✔️                   |
 | Pushrules                               | ❌          | ✔️        | ❌               | ✔️                   |
-| Send read markers                       | ❌  ([#11]) | ✔️        | ✔️                | ✔️                   |
-| Display read markers                    | ❌  ([#11]) | ❌       | ❌               | ✔️                   |
+| Send read markers                       | ✔️           | ✔️        | ✔️                | ✔️                   |
+| Display read markers                    | ✔️           | ❌       | ❌               | ✔️                   |
 | Sending Invites                         | ✔️           | ✔️        | ✔️                | ✔️                   |
 | Accepting Invites                       | ✔️           | ✔️        | ✔️                | ✔️                   |
 | Typing Notification                     | ✔️           | ✔️        | ✔️                | ✔️                   |
@@ -66,15 +66,15 @@ two other TUI clients and Element Web:
 | Attachment uploading                    | ✔️           | ❌       | ✔️                | ✔️                   |
 | Attachment downloading                  | ✔️           | ✔️        | ✔️                | ✔️                   |
 | Send stickers                           | ❌          | ❌       | ❌               | ✔️                   |
-| Send formatted messages (markdown)      | ❌  ([#10]) | ✔️        | ✔️                | ✔️                   |
+| Send formatted messages (markdown)      | ✔️           | ✔️        | ✔️                | ✔️                   |
 | Rich Text Editor for formatted messages | ❌          | ❌       | ❌               | ✔️                   |
-| Display formatted messages              | ❌  ([#10]) | ✔️        | ✔️                | ✔️                   |
+| Display formatted messages              | ✔️           | ✔️        | ✔️                | ✔️                   |
 | Redacting                               | ✔️           | ✔️        | ✔️                | ✔️                   |
 | Multiple Matrix Accounts                | ✔️           | ❌       | ✔️                | ❌                  |
 | New user registration                   | ❌          | ❌       | ❌               | ✔️                   |
 | VOIP                                    | ❌          | ❌       | ❌               | ✔️                   |
-| Reactions                               | ❌  ([#2])  | ✔️        | ❌               | ✔️                   |
-| Message editing                         | ❌  ([#4])  | ✔️        | ❌               | ✔️                   |
+| Reactions                               | ✔️           | ✔️        | ❌               | ✔️                   |
+| Message editing                         | ✔️           | ✔️        | ❌               | ✔️                   |
 | Room upgrades                           | ❌          | ✔️        | ❌               | ✔️                   |
 | Localisations                           | ❌          | 1        | ❌               | 44                  |
 | SSO Support                             | ❌          | ✔️        | ✔️                | ✔️                   |

src/base.rs

@@ -8,7 +8,27 @@ use tracing::warn;
 
 use matrix_sdk::{
     encryption::verification::SasVerification,
-    ruma::{OwnedRoomId, OwnedUserId, RoomId},
+    room::Joined,
+    ruma::{
+        events::{
+            reaction::ReactionEvent,
+            room::message::{
+                OriginalRoomMessageEvent,
+                Relation,
+                Replacement,
+                RoomMessageEvent,
+                RoomMessageEventContent,
+            },
+            tag::{TagName, Tags},
+            AnyMessageLikeEvent,
+            MessageLikeEvent,
+        },
+        EventId,
+        OwnedEventId,
+        OwnedRoomId,
+        OwnedUserId,
+        RoomId,
+    },
 };
 
 use modalkit::{
@@ -41,12 +61,12 @@ use modalkit::{
 };
 
 use crate::{
-    message::{Message, Messages},
+    message::{Message, MessageEvent, MessageKey, MessageTimeStamp, Messages},
     worker::Requester,
     ApplicationSettings,
 };
 
-const ROOM_FETCH_DEBOUNCE: Duration = Duration::from_secs(3);
+const ROOM_FETCH_DEBOUNCE: Duration = Duration::from_secs(2);
 
 #[derive(Clone, Debug, Eq, PartialEq)]
 pub enum IambInfo {}
@@ -61,16 +81,51 @@ pub enum VerifyAction {
 
 #[derive(Clone, Debug, Eq, PartialEq)]
 pub enum MessageAction {
+    /// Cance the current reply or edit.
     Cancel,
-    Download(Option<String>, bool),
+
+    /// Download an attachment to the given path.
+    ///
+    /// The second argument controls whether to overwrite any already existing file at the
+    /// destination path, or to open the attachment after downloading.
+    Download(Option<String>, DownloadFlags),
+
+    /// Edit a sent message.
+    Edit,
+
+    /// React to a message with an Emoji.
+    React(String),
+
+    /// Redact a message, with an optional reason.
     Redact(Option<String>),
+
+    /// Reply to a message.
     Reply,
+
+    /// Unreact to a message.
+    ///
+    /// If no specific Emoji to remove to is specified, then all reactions from the user on the
+    /// message are removed.
+    Unreact(Option<String>),
+}
+
+bitflags::bitflags! {
+    pub struct DownloadFlags: u32 {
+        const NONE = 0b00000000;
+
+        /// Overwrite file if it already exists.
+        const FORCE = 0b00000001;
+
+        /// Open file after downloading.
+        const OPEN = 0b00000010;
+    }
 }
 
 #[derive(Clone, Debug, Eq, PartialEq)]
-pub enum SetRoomField {
-    Name(String),
-    Topic(String),
+pub enum RoomField {
+    Name,
+    Tag(TagName),
+    Topic,
 }
 
 #[derive(Clone, Debug, Eq, PartialEq)]
@@ -79,13 +134,8 @@ pub enum RoomAction {
     InviteReject,
     InviteSend(OwnedUserId),
     Members(Box<CommandContext<ProgramContext>>),
-    Set(SetRoomField),
-}
-
-impl From<SetRoomField> for RoomAction {
-    fn from(act: SetRoomField) -> Self {
-        RoomAction::Set(act)
-    }
+    Set(RoomField, String),
+    Unset(RoomField),
 }
 
 #[derive(Clone, Debug, Eq, PartialEq)]
@@ -168,6 +218,12 @@ impl ApplicationAction for IambAction {
     }
 }
 
+impl From<RoomAction> for ProgramAction {
+    fn from(act: RoomAction) -> Self {
+        IambAction::from(act).into()
+    }
+}
+
 impl From<IambAction> for ProgramAction {
     fn from(act: IambAction) -> Self {
         Action::Application(act)
@@ -184,6 +240,14 @@ pub type AsyncProgramStore = Arc<AsyncMutex<ProgramStore>>;
 
 pub type IambResult<T> = UIResult<T, IambInfo>;
 
+/// Reaction events for some message.
+///
+/// The event identifier used as a key here is the ID for the reaction, and not for the message
+/// it's reacting to.
+pub type MessageReactions = HashMap<OwnedEventId, (String, OwnedUserId)>;
+
+pub type Receipts = HashMap<OwnedEventId, Vec<OwnedUserId>>;
+
 #[derive(thiserror::Error, Debug)]
 pub enum IambError {
     #[error("Invalid user identifier: {0}")]
@@ -248,16 +312,150 @@ pub enum RoomFetchStatus {
     NotStarted,
 }
 
+pub enum EventLocation {
+    Message(MessageKey),
+    Reaction(OwnedEventId),
+}
+
+impl EventLocation {
+    fn to_message_key(&self) -> Option<&MessageKey> {
+        if let EventLocation::Message(key) = self {
+            Some(key)
+        } else {
+            None
+        }
+    }
+}
+
 #[derive(Default)]
 pub struct RoomInfo {
+    /// The display name for this room.
     pub name: Option<String>,
+
+    /// The tags placed on this room.
+    pub tags: Option<Tags>,
+
+    /// A map of event IDs to where they are stored in this struct.
+    pub keys: HashMap<OwnedEventId, EventLocation>,
+
+    /// The messages loaded for this room.
     pub messages: Messages,
+
+    /// A map of read markers to display on different events.
+    pub receipts: HashMap<OwnedEventId, Vec<OwnedUserId>>,
+
+    /// An event ID for where we should indicate we've read up to.
+    pub read_till: Option<OwnedEventId>,
+
+    /// A map of message identifiers to a map of reaction events.
+    pub reactions: HashMap<OwnedEventId, MessageReactions>,
+
+    /// Where to continue fetching from when we continue loading scrollback history.
     pub fetch_id: RoomFetchStatus,
+
+    /// The time that we last fetched scrollback for this room.
     pub fetch_last: Option<Instant>,
+
+    /// Users currently typing in this room, and when we received notification of them doing so.
     pub users_typing: Option<(Instant, Vec<OwnedUserId>)>,
 }
 
 impl RoomInfo {
+    pub fn get_reactions(&self, event_id: &EventId) -> Vec<(&str, usize)> {
+        if let Some(reacts) = self.reactions.get(event_id) {
+            let mut counts = HashMap::new();
+
+            for (key, _) in reacts.values() {
+                let count = counts.entry(key.as_str()).or_default();
+                *count += 1;
+            }
+
+            let mut reactions = counts.into_iter().collect::<Vec<_>>();
+            reactions.sort();
+
+            reactions
+        } else {
+            vec![]
+        }
+    }
+
+    pub fn get_event(&self, event_id: &EventId) -> Option<&Message> {
+        self.messages.get(self.keys.get(event_id)?.to_message_key()?)
+    }
+
+    pub fn insert_reaction(&mut self, react: ReactionEvent) {
+        match react {
+            MessageLikeEvent::Original(react) => {
+                let rel_id = react.content.relates_to.event_id;
+                let key = react.content.relates_to.key;
+
+                let message = self.reactions.entry(rel_id.clone()).or_default();
+                let event_id = react.event_id;
+                let user_id = react.sender;
+
+                message.insert(event_id.clone(), (key, user_id));
+
+                let loc = EventLocation::Reaction(rel_id);
+                self.keys.insert(event_id, loc);
+            },
+            MessageLikeEvent::Redacted(_) => {
+                return;
+            },
+        }
+    }
+
+    pub fn insert_edit(&mut self, msg: Replacement) {
+        let event_id = msg.event_id;
+        let new_content = msg.new_content;
+
+        let key = if let Some(EventLocation::Message(k)) = self.keys.get(&event_id) {
+            k
+        } else {
+            return;
+        };
+
+        let msg = if let Some(msg) = self.messages.get_mut(key) {
+            msg
+        } else {
+            return;
+        };
+
+        match &mut msg.event {
+            MessageEvent::Original(orig) => {
+                orig.content = *new_content;
+            },
+            MessageEvent::Local(_, content) => {
+                *content = new_content;
+            },
+            MessageEvent::Redacted(_) => {
+                return;
+            },
+        }
+    }
+
+    pub fn insert_message(&mut self, msg: RoomMessageEvent) {
+        let event_id = msg.event_id().to_owned();
+        let key = (msg.origin_server_ts().into(), event_id.clone());
+
+        self.keys.insert(event_id.clone(), EventLocation::Message(key.clone()));
+        self.messages.insert(key, msg.into());
+
+        // Remove any echo.
+        let key = (MessageTimeStamp::LocalEcho, event_id);
+        let _ = self.messages.remove(&key);
+    }
+
+    pub fn insert(&mut self, msg: RoomMessageEvent) {
+        match msg {
+            RoomMessageEvent::Original(OriginalRoomMessageEvent {
+                content:
+                    RoomMessageEventContent { relates_to: Some(Relation::Replacement(repl)), .. },
+                ..
+            }) => self.insert_edit(repl),
+            _ => self.insert_message(msg),
+        }
+    }
+
     fn recently_fetched(&self) -> bool {
         self.fetch_last.map_or(false, |i| i.elapsed() < ROOM_FETCH_DEBOUNCE)
     }
@@ -274,7 +472,7 @@ impl RoomInfo {
         }
     }
 
-    fn get_typing_spans(&self, settings: &ApplicationSettings) -> Spans {
+    fn get_typing_spans<'a>(&'a self, settings: &'a ApplicationSettings) -> Spans<'a> {
         let typers = self.get_typers();
         let n = typers.len();
 
@@ -352,6 +550,10 @@ impl ChatStore {
         }
     }
 
+    pub fn get_joined_room(&self, room_id: &RoomId) -> Option<Joined> {
+        self.worker.client.get_joined_room(room_id)
+    }
+
     pub fn get_room_title(&self, room_id: &RoomId) -> String {
         self.rooms
             .get(room_id)
@@ -360,6 +562,26 @@ impl ChatStore {
             .unwrap_or_else(|| "Untitled Matrix Room".to_string())
     }
 
+    pub async fn set_receipts(&mut self, receipts: Vec<(OwnedRoomId, Receipts)>) {
+        let mut updates = vec![];
+
+        for (room_id, receipts) in receipts.into_iter() {
+            if let Some(info) = self.rooms.get_mut(&room_id) {
+                info.receipts = receipts;
+
+                if let Some(read_till) = info.read_till.take() {
+                    updates.push((room_id, read_till));
+                }
+            }
+        }
+
+        for (room_id, read_till) in updates.into_iter() {
+            if let Some(room) = self.worker.client.get_joined_room(&room_id) {
+                let _ = room.read_receipt(read_till.as_ref()).await;
+            }
+        }
+    }
+
     pub fn mark_for_load(&mut self, room_id: OwnedRoomId) {
         self.need_load.insert(room_id);
     }
@@ -388,9 +610,15 @@ impl ChatStore {
             match res {
                 Ok((fetch_id, msgs)) => {
                     for msg in msgs.into_iter() {
-                        let key = (msg.origin_server_ts().into(), msg.event_id().to_owned());
-
-                        info.messages.insert(key, Message::from(msg));
+                        match msg {
+                            AnyMessageLikeEvent::RoomMessage(msg) => {
+                                info.insert(msg);
+                            },
+                            AnyMessageLikeEvent::Reaction(ev) => {
+                                info.insert_reaction(ev);
+                            },
+                            _ => continue,
+                        }
                     }
 
                     info.fetch_id =
@@ -496,7 +724,7 @@ impl ApplicationInfo for IambInfo {
 #[cfg(test)]
 pub mod tests {
     use super::*;
-    use crate::config::{user_style, user_style_from_color};
+    use crate::config::user_style_from_color;
     use crate::tests::*;
     use modalkit::tui::style::Color;
 

src/commands.rs

@@ -1,6 +1,6 @@
 use std::convert::TryFrom;
 
-use matrix_sdk::ruma::OwnedUserId;
+use matrix_sdk::ruma::{events::tag::TagName, OwnedUserId};
 
 use modalkit::{
     editing::base::OpenTarget,
@@ -10,6 +10,7 @@ use modalkit::{
 };
 
 use crate::base::{
+    DownloadFlags,
     IambAction,
     IambId,
     MessageAction,
@@ -17,14 +18,38 @@ use crate::base::{
     ProgramCommands,
     ProgramContext,
     RoomAction,
+    RoomField,
     SendAction,
-    SetRoomField,
     VerifyAction,
 };
 
 type ProgContext = CommandContext<ProgramContext>;
 type ProgResult = CommandResult<ProgramCommand>;
 
+/// Convert strings the user types into a tag name.
+fn tag_name(name: String) -> Result<TagName, CommandError> {
+    let tag = match name.as_str() {
+        "fav" | "favorite" | "favourite" | "m.favourite" => TagName::Favorite,
+        "low" | "lowpriority" | "low_priority" | "low-priority" | "m.lowpriority" => {
+            TagName::LowPriority
+        },
+        "servernotice" | "server_notice" | "server-notice" | "m.server_notice" => {
+            TagName::ServerNotice
+        },
+        _ => {
+            if let Ok(tag) = name.parse() {
+                TagName::User(tag)
+            } else {
+                let msg = format!("Invalid user tag name: {name}");
+
+                return Err(CommandError::Error(msg));
+            }
+        },
+    };
+
+    Ok(tag)
+}
+
 fn iamb_invite(desc: CommandDescription, ctx: &mut ProgContext) -> ProgResult {
     let args = desc.arg.strings()?;
 
@@ -138,8 +163,66 @@ fn iamb_cancel(desc: CommandDescription, ctx: &mut ProgContext) -> ProgResult {
         return Result::Err(CommandError::InvalidArgument);
     }
 
-    let ract = IambAction::from(MessageAction::Cancel);
-    let step = CommandStep::Continue(ract.into(), ctx.context.take());
+    let mact = IambAction::from(MessageAction::Cancel);
+    let step = CommandStep::Continue(mact.into(), ctx.context.take());
+
+    return Ok(step);
+}
+
+fn iamb_edit(desc: CommandDescription, ctx: &mut ProgContext) -> ProgResult {
+    if !desc.arg.text.is_empty() {
+        return Result::Err(CommandError::InvalidArgument);
+    }
+
+    let mact = IambAction::from(MessageAction::Edit);
+    let step = CommandStep::Continue(mact.into(), ctx.context.take());
+
+    return Ok(step);
+}
+
+fn iamb_react(desc: CommandDescription, ctx: &mut ProgContext) -> ProgResult {
+    let args = desc.arg.strings()?;
+
+    if args.len() != 1 {
+        return Result::Err(CommandError::InvalidArgument);
+    }
+
+    let k = args[0].as_str();
+
+    if let Some(emoji) = emojis::get(k).or_else(|| emojis::get_by_shortcode(k)) {
+        let mact = IambAction::from(MessageAction::React(emoji.to_string()));
+        let step = CommandStep::Continue(mact.into(), ctx.context.take());
+
+        return Ok(step);
+    } else {
+        let msg = format!("Invalid Emoji or shortcode: {k}");
+
+        return Result::Err(CommandError::Error(msg));
+    }
+}
+
+fn iamb_unreact(desc: CommandDescription, ctx: &mut ProgContext) -> ProgResult {
+    let mut args = desc.arg.strings()?;
+
+    if args.len() > 1 {
+        return Result::Err(CommandError::InvalidArgument);
+    }
+
+    let mact = if let Some(k) = args.pop() {
+        let k = k.as_str();
+
+        if let Some(emoji) = emojis::get(k).or_else(|| emojis::get_by_shortcode(k)) {
+            IambAction::from(MessageAction::Unreact(Some(emoji.to_string())))
+        } else {
+            let msg = format!("Invalid Emoji or shortcode: {k}");
+
+            return Result::Err(CommandError::Error(msg));
+        }
+    } else {
+        IambAction::from(MessageAction::Unreact(None))
+    };
+
+    let step = CommandStep::Continue(mact.into(), ctx.context.take());
 
     return Ok(step);
 }
@@ -214,22 +297,46 @@ fn iamb_join(desc: CommandDescription, ctx: &mut ProgContext) -> ProgResult {
     return Ok(step);
 }
 
-fn iamb_set(desc: CommandDescription, ctx: &mut ProgContext) -> ProgResult {
+fn iamb_room(desc: CommandDescription, ctx: &mut ProgContext) -> ProgResult {
     let mut args = desc.arg.strings()?;
 
-    if args.len() != 2 {
+    if args.len() < 2 {
         return Result::Err(CommandError::InvalidArgument);
     }
 
     let field = args.remove(0);
-    let value = args.remove(0);
+    let action = args.remove(0);
 
-    let act: IambAction = match field.as_str() {
-        "room.name" => RoomAction::Set(SetRoomField::Name(value)).into(),
-        "room.topic" => RoomAction::Set(SetRoomField::Topic(value)).into(),
-        _ => {
-            return Result::Err(CommandError::InvalidArgument);
-        },
+    if args.len() > 1 {
+        return Result::Err(CommandError::InvalidArgument);
+    }
+
+    let act: IambAction = match (field.as_str(), action.as_str(), args.pop()) {
+        // :room name set <room-name>
+        ("name", "set", Some(s)) => RoomAction::Set(RoomField::Name, s).into(),
+        ("name", "set", None) => return Result::Err(CommandError::InvalidArgument),
+
+        // :room name unset
+        ("name", "unset", None) => RoomAction::Unset(RoomField::Name).into(),
+        ("name", "unset", Some(_)) => return Result::Err(CommandError::InvalidArgument),
+
+        // :room topic set <topic>
+        ("topic", "set", Some(s)) => RoomAction::Set(RoomField::Topic, s).into(),
+        ("topic", "set", None) => return Result::Err(CommandError::InvalidArgument),
+
+        // :room topic unset
+        ("topic", "unset", None) => RoomAction::Unset(RoomField::Topic).into(),
+        ("topic", "unset", Some(_)) => return Result::Err(CommandError::InvalidArgument),
+
+        // :room tag set <tag-name>
+        ("tag", "set", Some(s)) => RoomAction::Set(RoomField::Tag(tag_name(s)?), "".into()).into(),
+        ("tag", "set", None) => return Result::Err(CommandError::InvalidArgument),
+
+        // :room tag unset <tag-name>
+        ("tag", "unset", Some(s)) => RoomAction::Unset(RoomField::Tag(tag_name(s)?)).into(),
+        ("tag", "unset", None) => return Result::Err(CommandError::InvalidArgument),
+
+        _ => return Result::Err(CommandError::InvalidArgument),
     };
 
     let step = CommandStep::Continue(act.into(), ctx.context.take());
@@ -258,7 +365,29 @@ fn iamb_download(desc: CommandDescription, ctx: &mut ProgContext) -> ProgResult
         return Result::Err(CommandError::InvalidArgument);
     }
 
-    let mact = MessageAction::Download(args.pop(), desc.bang);
+    let mut flags = DownloadFlags::NONE;
+    if desc.bang {
+        flags |= DownloadFlags::FORCE;
+    };
+    let mact = MessageAction::Download(args.pop(), flags);
+    let iact = IambAction::from(mact);
+    let step = CommandStep::Continue(iact.into(), ctx.context.take());
+
+    return Ok(step);
+}
+
+fn iamb_open(desc: CommandDescription, ctx: &mut ProgContext) -> ProgResult {
+    let mut args = desc.arg.strings()?;
+
+    if args.len() > 1 {
+        return Result::Err(CommandError::InvalidArgument);
+    }
+
+    let mut flags = DownloadFlags::OPEN;
+    if desc.bang {
+        flags |= DownloadFlags::FORCE;
+    };
+    let mact = MessageAction::Download(args.pop(), flags);
     let iact = IambAction::from(mact);
     let step = CommandStep::Continue(iact.into(), ctx.context.take());
 
@@ -269,14 +398,18 @@ fn add_iamb_commands(cmds: &mut ProgramCommands) {
     cmds.add_command(ProgramCommand { names: vec!["cancel".into()], f: iamb_cancel });
     cmds.add_command(ProgramCommand { names: vec!["dms".into()], f: iamb_dms });
     cmds.add_command(ProgramCommand { names: vec!["download".into()], f: iamb_download });
+    cmds.add_command(ProgramCommand { names: vec!["open".into()], f: iamb_open });
+    cmds.add_command(ProgramCommand { names: vec!["edit".into()], f: iamb_edit });
     cmds.add_command(ProgramCommand { names: vec!["invite".into()], f: iamb_invite });
     cmds.add_command(ProgramCommand { names: vec!["join".into()], f: iamb_join });
     cmds.add_command(ProgramCommand { names: vec!["members".into()], f: iamb_members });
+    cmds.add_command(ProgramCommand { names: vec!["react".into()], f: iamb_react });
     cmds.add_command(ProgramCommand { names: vec!["redact".into()], f: iamb_redact });
     cmds.add_command(ProgramCommand { names: vec!["reply".into()], f: iamb_reply });
     cmds.add_command(ProgramCommand { names: vec!["rooms".into()], f: iamb_rooms });
-    cmds.add_command(ProgramCommand { names: vec!["set".into()], f: iamb_set });
+    cmds.add_command(ProgramCommand { names: vec!["room".into()], f: iamb_room });
     cmds.add_command(ProgramCommand { names: vec!["spaces".into()], f: iamb_spaces });
+    cmds.add_command(ProgramCommand { names: vec!["unreact".into()], f: iamb_unreact });
     cmds.add_command(ProgramCommand { names: vec!["upload".into()], f: iamb_upload });
     cmds.add_command(ProgramCommand { names: vec!["verify".into()], f: iamb_verify });
     cmds.add_command(ProgramCommand { names: vec!["welcome".into()], f: iamb_welcome });
@@ -364,47 +497,227 @@ mod tests {
     }
 
     #[test]
-    fn test_cmd_set() {
+    fn test_cmd_room_invalid() {
+        let mut cmds = setup_commands();
+        let ctx = ProgramContext::default();
+
+        let res = cmds.input_cmd("room", ctx.clone());
+        assert_eq!(res, Err(CommandError::InvalidArgument));
+
+        let res = cmds.input_cmd("room foo", ctx.clone());
+        assert_eq!(res, Err(CommandError::InvalidArgument));
+
+        let res = cmds.input_cmd("room set topic", ctx.clone());
+        assert_eq!(res, Err(CommandError::InvalidArgument));
+    }
+
+    #[test]
+    fn test_cmd_room_topic_set() {
         let mut cmds = setup_commands();
         let ctx = ProgramContext::default();
 
         let res = cmds
-            .input_cmd("set room.topic \"Lots of fun discussion!\"", ctx.clone())
+            .input_cmd("room topic set \"Lots of fun discussion!\"", ctx.clone())
             .unwrap();
-        let act = IambAction::Room(SetRoomField::Topic("Lots of fun discussion!".into()).into());
+        let act = RoomAction::Set(RoomField::Topic, "Lots of fun discussion!".into());
         assert_eq!(res, vec![(act.into(), ctx.clone())]);
 
         let res = cmds
-            .input_cmd("set room.topic The\\ Discussion\\ Room", ctx.clone())
+            .input_cmd("room topic set The\\ Discussion\\ Room", ctx.clone())
             .unwrap();
-        let act = IambAction::Room(SetRoomField::Topic("The Discussion Room".into()).into());
+        let act = RoomAction::Set(RoomField::Topic, "The Discussion Room".into());
         assert_eq!(res, vec![(act.into(), ctx.clone())]);
 
-        let res = cmds.input_cmd("set room.topic Development", ctx.clone()).unwrap();
-        let act = IambAction::Room(SetRoomField::Topic("Development".into()).into());
+        let res = cmds.input_cmd("room topic set Development", ctx.clone()).unwrap();
+        let act = RoomAction::Set(RoomField::Topic, "Development".into());
         assert_eq!(res, vec![(act.into(), ctx.clone())]);
 
-        let res = cmds.input_cmd("set room.name Development", ctx.clone()).unwrap();
-        let act = IambAction::Room(SetRoomField::Name("Development".into()).into());
+        let res = cmds.input_cmd("room topic", ctx.clone());
+        assert_eq!(res, Err(CommandError::InvalidArgument));
+
+        let res = cmds.input_cmd("room topic set", ctx.clone());
+        assert_eq!(res, Err(CommandError::InvalidArgument));
+
+        let res = cmds.input_cmd("room topic set A B C", ctx.clone());
+        assert_eq!(res, Err(CommandError::InvalidArgument));
+    }
+
+    #[test]
+    fn test_cmd_room_name_invalid() {
+        let mut cmds = setup_commands();
+        let ctx = ProgramContext::default();
+
+        let res = cmds.input_cmd("room name", ctx.clone());
+        assert_eq!(res, Err(CommandError::InvalidArgument));
+
+        let res = cmds.input_cmd("room name foo", ctx.clone());
+        assert_eq!(res, Err(CommandError::InvalidArgument));
+    }
+
+    #[test]
+    fn test_cmd_room_name_set() {
+        let mut cmds = setup_commands();
+        let ctx = ProgramContext::default();
+
+        let res = cmds.input_cmd("room name set Development", ctx.clone()).unwrap();
+        let act = RoomAction::Set(RoomField::Name, "Development".into());
         assert_eq!(res, vec![(act.into(), ctx.clone())]);
 
         let res = cmds
-            .input_cmd("set room.name \"Application Development\"", ctx.clone())
+            .input_cmd("room name set \"Application Development\"", ctx.clone())
             .unwrap();
-        let act = IambAction::Room(SetRoomField::Name("Application Development".into()).into());
+        let act = RoomAction::Set(RoomField::Name, "Application Development".into());
         assert_eq!(res, vec![(act.into(), ctx.clone())]);
 
-        let res = cmds.input_cmd("set", ctx.clone());
+        let res = cmds.input_cmd("room name set", ctx.clone());
+        assert_eq!(res, Err(CommandError::InvalidArgument));
+    }
+
+    #[test]
+    fn test_cmd_room_name_unset() {
+        let mut cmds = setup_commands();
+        let ctx = ProgramContext::default();
+
+        let res = cmds.input_cmd("room name unset", ctx.clone()).unwrap();
+        let act = RoomAction::Unset(RoomField::Name);
+        assert_eq!(res, vec![(act.into(), ctx.clone())]);
+
+        let res = cmds.input_cmd("room name unset foo", ctx.clone());
+        assert_eq!(res, Err(CommandError::InvalidArgument));
+    }
+
+    #[test]
+    fn test_cmd_room_tag_set() {
+        let mut cmds = setup_commands();
+        let ctx = ProgramContext::default();
+
+        let res = cmds.input_cmd("room tag set favourite", ctx.clone()).unwrap();
+        let act = RoomAction::Set(RoomField::Tag(TagName::Favorite), "".into());
+        assert_eq!(res, vec![(act.into(), ctx.clone())]);
+
+        let res = cmds.input_cmd("room tag set favorite", ctx.clone()).unwrap();
+        let act = RoomAction::Set(RoomField::Tag(TagName::Favorite), "".into());
+        assert_eq!(res, vec![(act.into(), ctx.clone())]);
+
+        let res = cmds.input_cmd("room tag set fav", ctx.clone()).unwrap();
+        let act = RoomAction::Set(RoomField::Tag(TagName::Favorite), "".into());
+        assert_eq!(res, vec![(act.into(), ctx.clone())]);
+
+        let res = cmds.input_cmd("room tag set low_priority", ctx.clone()).unwrap();
+        let act = RoomAction::Set(RoomField::Tag(TagName::LowPriority), "".into());
+        assert_eq!(res, vec![(act.into(), ctx.clone())]);
+
+        let res = cmds.input_cmd("room tag set low-priority", ctx.clone()).unwrap();
+        let act = RoomAction::Set(RoomField::Tag(TagName::LowPriority), "".into());
+        assert_eq!(res, vec![(act.into(), ctx.clone())]);
+
+        let res = cmds.input_cmd("room tag set low", ctx.clone()).unwrap();
+        let act = RoomAction::Set(RoomField::Tag(TagName::LowPriority), "".into());
+        assert_eq!(res, vec![(act.into(), ctx.clone())]);
+
+        let res = cmds.input_cmd("room tag set servernotice", ctx.clone()).unwrap();
+        let act = RoomAction::Set(RoomField::Tag(TagName::ServerNotice), "".into());
+        assert_eq!(res, vec![(act.into(), ctx.clone())]);
+
+        let res = cmds.input_cmd("room tag set server_notice", ctx.clone()).unwrap();
+        let act = RoomAction::Set(RoomField::Tag(TagName::ServerNotice), "".into());
+        assert_eq!(res, vec![(act.into(), ctx.clone())]);
+
+        let res = cmds.input_cmd("room tag set server_notice", ctx.clone()).unwrap();
+        let act = RoomAction::Set(RoomField::Tag(TagName::ServerNotice), "".into());
+        assert_eq!(res, vec![(act.into(), ctx.clone())]);
+
+        let res = cmds.input_cmd("room tag set u.custom-tag", ctx.clone()).unwrap();
+        let act = RoomAction::Set(
+            RoomField::Tag(TagName::User("u.custom-tag".parse().unwrap())),
+            "".into(),
+        );
+        assert_eq!(res, vec![(act.into(), ctx.clone())]);
+
+        let res = cmds.input_cmd("room tag set u.irc", ctx.clone()).unwrap();
+        let act =
+            RoomAction::Set(RoomField::Tag(TagName::User("u.irc".parse().unwrap())), "".into());
+        assert_eq!(res, vec![(act.into(), ctx.clone())]);
+
+        let res = cmds.input_cmd("room tag", ctx.clone());
         assert_eq!(res, Err(CommandError::InvalidArgument));
 
-        let res = cmds.input_cmd("set room.name", ctx.clone());
+        let res = cmds.input_cmd("room tag set", ctx.clone());
         assert_eq!(res, Err(CommandError::InvalidArgument));
 
-        let res = cmds.input_cmd("set room.topic", ctx.clone());
+        let res = cmds.input_cmd("room tag set unknown", ctx.clone());
+        assert_eq!(res, Err(CommandError::Error("Invalid user tag name: unknown".into())));
+
+        let res = cmds.input_cmd("room tag set needs-leading-u-dot", ctx.clone());
+        assert_eq!(
+            res,
+            Err(CommandError::Error("Invalid user tag name: needs-leading-u-dot".into()))
+        );
+    }
+
+    #[test]
+    fn test_cmd_room_tag_unset() {
+        let mut cmds = setup_commands();
+        let ctx = ProgramContext::default();
+
+        let res = cmds.input_cmd("room tag unset favourite", ctx.clone()).unwrap();
+        let act = RoomAction::Unset(RoomField::Tag(TagName::Favorite));
+        assert_eq!(res, vec![(act.into(), ctx.clone())]);
+
+        let res = cmds.input_cmd("room tag unset favorite", ctx.clone()).unwrap();
+        let act = RoomAction::Unset(RoomField::Tag(TagName::Favorite));
+        assert_eq!(res, vec![(act.into(), ctx.clone())]);
+
+        let res = cmds.input_cmd("room tag unset fav", ctx.clone()).unwrap();
+        let act = RoomAction::Unset(RoomField::Tag(TagName::Favorite));
+        assert_eq!(res, vec![(act.into(), ctx.clone())]);
+
+        let res = cmds.input_cmd("room tag unset low_priority", ctx.clone()).unwrap();
+        let act = RoomAction::Unset(RoomField::Tag(TagName::LowPriority));
+        assert_eq!(res, vec![(act.into(), ctx.clone())]);
+
+        let res = cmds.input_cmd("room tag unset low-priority", ctx.clone()).unwrap();
+        let act = RoomAction::Unset(RoomField::Tag(TagName::LowPriority));
+        assert_eq!(res, vec![(act.into(), ctx.clone())]);
+
+        let res = cmds.input_cmd("room tag unset low", ctx.clone()).unwrap();
+        let act = RoomAction::Unset(RoomField::Tag(TagName::LowPriority));
+        assert_eq!(res, vec![(act.into(), ctx.clone())]);
+
+        let res = cmds.input_cmd("room tag unset servernotice", ctx.clone()).unwrap();
+        let act = RoomAction::Unset(RoomField::Tag(TagName::ServerNotice));
+        assert_eq!(res, vec![(act.into(), ctx.clone())]);
+
+        let res = cmds.input_cmd("room tag unset server_notice", ctx.clone()).unwrap();
+        let act = RoomAction::Unset(RoomField::Tag(TagName::ServerNotice));
+        assert_eq!(res, vec![(act.into(), ctx.clone())]);
+
+        let res = cmds.input_cmd("room tag unset server_notice", ctx.clone()).unwrap();
+        let act = RoomAction::Unset(RoomField::Tag(TagName::ServerNotice));
+        assert_eq!(res, vec![(act.into(), ctx.clone())]);
+
+        let res = cmds.input_cmd("room tag unset u.custom-tag", ctx.clone()).unwrap();
+        let act = RoomAction::Unset(RoomField::Tag(TagName::User("u.custom-tag".parse().unwrap())));
+        assert_eq!(res, vec![(act.into(), ctx.clone())]);
+
+        let res = cmds.input_cmd("room tag unset u.irc", ctx.clone()).unwrap();
+        let act = RoomAction::Unset(RoomField::Tag(TagName::User("u.irc".parse().unwrap())));
+        assert_eq!(res, vec![(act.into(), ctx.clone())]);
+
+        let res = cmds.input_cmd("room tag", ctx.clone());
         assert_eq!(res, Err(CommandError::InvalidArgument));
 
-        let res = cmds.input_cmd("set room.topic A B C", ctx.clone());
+        let res = cmds.input_cmd("room tag set", ctx.clone());
         assert_eq!(res, Err(CommandError::InvalidArgument));
+
+        let res = cmds.input_cmd("room tag unset unknown", ctx.clone());
+        assert_eq!(res, Err(CommandError::Error("Invalid user tag name: unknown".into())));
+
+        let res = cmds.input_cmd("room tag unset needs-leading-u-dot", ctx.clone());
+        assert_eq!(
+            res,
+            Err(CommandError::Error("Invalid user tag name: needs-leading-u-dot".into()))
+        );
     }
 
     #[test]

src/config.rs

@@ -1,3 +1,4 @@
+use std::borrow::Cow;
 use std::collections::hash_map::DefaultHasher;
 use std::collections::HashMap;
 use std::fmt;
@@ -52,10 +53,6 @@ pub fn user_style_from_color(color: Color) -> Style {
     Style::default().fg(color).add_modifier(StyleModifier::BOLD)
 }
 
-pub fn user_style(user: &str) -> Style {
-    user_style_from_color(user_color(user))
-}
-
 fn is_profile_char(c: char) -> bool {
     c.is_ascii_alphanumeric() || c == '.' || c == '-'
 }
@@ -181,32 +178,54 @@ fn merge_users(a: Option<UserOverrides>, b: Option<UserOverrides>) -> Option<Use
 
 #[derive(Clone)]
 pub struct TunableValues {
-    pub typing_notice: bool,
+    pub reaction_display: bool,
+    pub reaction_shortcode_display: bool,
+    pub read_receipt_send: bool,
+    pub read_receipt_display: bool,
+    pub typing_notice_send: bool,
     pub typing_notice_display: bool,
     pub users: UserOverrides,
+    pub default_room: Option<String>,
 }
 
 #[derive(Clone, Default, Deserialize)]
 pub struct Tunables {
-    pub typing_notice: Option<bool>,
+    pub reaction_display: Option<bool>,
+    pub reaction_shortcode_display: Option<bool>,
+    pub read_receipt_send: Option<bool>,
+    pub read_receipt_display: Option<bool>,
+    pub typing_notice_send: Option<bool>,
     pub typing_notice_display: Option<bool>,
     pub users: Option<UserOverrides>,
+    pub default_room: Option<String>,
 }
 
 impl Tunables {
     fn merge(self, other: Self) -> Self {
         Tunables {
-            typing_notice: self.typing_notice.or(other.typing_notice),
+            reaction_display: self.reaction_display.or(other.reaction_display),
+            reaction_shortcode_display: self
+                .reaction_shortcode_display
+                .or(other.reaction_shortcode_display),
+            read_receipt_send: self.read_receipt_send.or(other.read_receipt_send),
+            read_receipt_display: self.read_receipt_display.or(other.read_receipt_display),
+            typing_notice_send: self.typing_notice_send.or(other.typing_notice_send),
             typing_notice_display: self.typing_notice_display.or(other.typing_notice_display),
             users: merge_users(self.users, other.users),
+            default_room: self.default_room.or(other.default_room),
         }
     }
 
     fn values(self) -> TunableValues {
         TunableValues {
-            typing_notice: self.typing_notice.unwrap_or(true),
-            typing_notice_display: self.typing_notice.unwrap_or(true),
+            reaction_display: self.reaction_display.unwrap_or(true),
+            reaction_shortcode_display: self.reaction_shortcode_display.unwrap_or(false),
+            read_receipt_send: self.read_receipt_send.unwrap_or(true),
+            read_receipt_display: self.read_receipt_display.unwrap_or(true),
+            typing_notice_send: self.typing_notice_send.unwrap_or(true),
+            typing_notice_display: self.typing_notice_display.unwrap_or(true),
             users: self.users.unwrap_or_default(),
+            default_room: self.default_room,
         }
     }
 }
@@ -374,24 +393,41 @@ impl ApplicationSettings {
         Ok(settings)
     }
 
+    pub fn get_user_char_span<'a>(&self, user_id: &'a UserId) -> Span<'a> {
+        let (color, c) = self
+            .tunables
+            .users
+            .get(user_id)
+            .map(|user| {
+                (
+                    user.color.as_ref().map(|c| c.0),
+                    user.name.as_ref().and_then(|s| s.chars().next()),
+                )
+            })
+            .unwrap_or_default();
+
+        let color = color.unwrap_or_else(|| user_color(user_id.as_str()));
+        let style = user_style_from_color(color);
+
+        let c = c.unwrap_or_else(|| user_id.localpart().chars().next().unwrap_or(' '));
+
+        Span::styled(String::from(c), style)
+    }
+
     pub fn get_user_span<'a>(&self, user_id: &'a UserId) -> Span<'a> {
-        if let Some(user) = self.tunables.users.get(user_id) {
-            let color = if let Some(UserColor(c)) = user.color {
-                c
-            } else {
-                user_color(user_id.as_str())
-            };
+        let (color, name) = self
+            .tunables
+            .users
+            .get(user_id)
+            .map(|user| (user.color.as_ref().map(|c| c.0), user.name.clone().map(Cow::Owned)))
+            .unwrap_or_default();
 
-            let style = user_style_from_color(color);
+        let user_id = user_id.as_str();
+        let color = color.unwrap_or_else(|| user_color(user_id));
+        let style = user_style_from_color(color);
+        let name = name.unwrap_or(Cow::Borrowed(user_id));
 
-            if let Some(name) = &user.name {
-                Span::styled(name.clone(), style)
-            } else {
-                Span::styled(user_id.as_str(), style)
-            }
-        } else {
-            Span::styled(user_id.as_str(), user_style(user_id.as_str()))
-        }
+        Span::styled(name, style)
     }
 }
 
@@ -461,22 +497,22 @@ mod tests {
     #[test]
     fn test_parse_tunables() {
         let res: Tunables = serde_json::from_str("{}").unwrap();
-        assert_eq!(res.typing_notice, None);
+        assert_eq!(res.typing_notice_send, None);
         assert_eq!(res.typing_notice_display, None);
         assert_eq!(res.users, None);
 
-        let res: Tunables = serde_json::from_str("{\"typing_notice\": true}").unwrap();
-        assert_eq!(res.typing_notice, Some(true));
+        let res: Tunables = serde_json::from_str("{\"typing_notice_send\": true}").unwrap();
+        assert_eq!(res.typing_notice_send, Some(true));
         assert_eq!(res.typing_notice_display, None);
         assert_eq!(res.users, None);
 
-        let res: Tunables = serde_json::from_str("{\"typing_notice\": false}").unwrap();
-        assert_eq!(res.typing_notice, Some(false));
+        let res: Tunables = serde_json::from_str("{\"typing_notice_send\": false}").unwrap();
+        assert_eq!(res.typing_notice_send, Some(false));
         assert_eq!(res.typing_notice_display, None);
         assert_eq!(res.users, None);
 
         let res: Tunables = serde_json::from_str("{\"users\": {}}").unwrap();
-        assert_eq!(res.typing_notice, None);
+        assert_eq!(res.typing_notice_send, None);
         assert_eq!(res.typing_notice_display, None);
         assert_eq!(res.users, Some(HashMap::new()));
 
@@ -484,7 +520,7 @@ mod tests {
             "{\"users\": {\"@a:b.c\": {\"color\": \"black\", \"name\": \"Tim\"}}}",
         )
         .unwrap();
-        assert_eq!(res.typing_notice, None);
+        assert_eq!(res.typing_notice_send, None);
         assert_eq!(res.typing_notice_display, None);
         let users = vec![(user_id!("@a:b.c").to_owned(), UserDisplayTunables {
             color: Some(UserColor(Color::Black)),

src/keybindings.rs

@@ -7,7 +7,9 @@ use modalkit::{
     input::key::TerminalKey,
 };
 
-use crate::base::{IambAction, Keybindings};
+use crate::base::{IambAction, IambInfo, Keybindings};
+
+type IambStep = InputStep<IambInfo>;
 
 /// Find the boundaries for a Matrix username, room alias, or room ID.
 ///
@@ -44,19 +46,27 @@ pub fn setup_keybindings() -> Keybindings {
         (EdgeRepeat::Once, ctrl_w.clone()),
         (EdgeRepeat::Once, ctrl_z),
     ];
-    let zoom = InputStep::new().actions(vec![WindowAction::ZoomToggle.into()]);
+    let zoom = IambStep::new()
+        .actions(vec![WindowAction::ZoomToggle.into()])
+        .goto(VimMode::Normal);
 
     ism.add_mapping(VimMode::Normal, &cwz, &zoom);
+    ism.add_mapping(VimMode::Visual, &cwz, &zoom);
     ism.add_mapping(VimMode::Normal, &cwcz, &zoom);
+    ism.add_mapping(VimMode::Visual, &cwcz, &zoom);
 
     let cwm = vec![
         (EdgeRepeat::Once, ctrl_w.clone()),
         (EdgeRepeat::Once, key_m_lc),
     ];
     let cwcm = vec![(EdgeRepeat::Once, ctrl_w), (EdgeRepeat::Once, ctrl_m)];
-    let stoggle = InputStep::new().actions(vec![IambAction::ToggleScrollbackFocus.into()]);
+    let stoggle = IambStep::new()
+        .actions(vec![IambAction::ToggleScrollbackFocus.into()])
+        .goto(VimMode::Normal);
     ism.add_mapping(VimMode::Normal, &cwm, &stoggle);
+    ism.add_mapping(VimMode::Visual, &cwm, &stoggle);
     ism.add_mapping(VimMode::Normal, &cwcm, &stoggle);
+    ism.add_mapping(VimMode::Visual, &cwcm, &stoggle);
 
     return ism;
 }

src/main.rs

@@ -23,7 +23,7 @@ use matrix_sdk::ruma::OwnedUserId;
 use modalkit::crossterm::{
     self,
     cursor::Show as CursorShow,
-    event::{poll, read, Event},
+    event::{poll, read, DisableBracketedPaste, EnableBracketedPaste, Event},
     execute,
     terminal::{EnterAlternateScreen, LeaveAlternateScreen, SetTitle},
 };
@@ -42,6 +42,7 @@ mod commands;
 mod config;
 mod keybindings;
 mod message;
+mod util;
 mod windows;
 mod worker;
 
@@ -76,6 +77,8 @@ use modalkit::{
             EditError,
             EditInfo,
             Editable,
+            EditorAction,
+            InsertTextAction,
             Jumpable,
             Promptable,
             Scrollable,
@@ -84,7 +87,7 @@ use modalkit::{
             WindowAction,
             WindowContainer,
         },
-        base::{OpenTarget, RepeatType},
+        base::{MoveDir1D, OpenTarget, RepeatType},
         context::Resolve,
         key::KeyManager,
         store::Store,
@@ -99,6 +102,14 @@ use modalkit::{
     },
 };
 
+const MIN_MSG_LOAD: u32 = 50;
+
+fn msg_load_req(area: Rect) -> u32 {
+    let n = area.height as u32;
+
+    n.max(MIN_MSG_LOAD)
+}
+
 struct Application {
     store: AsyncProgramStore,
     worker: Requester,
@@ -117,6 +128,7 @@ impl Application {
         let mut stdout = stdout();
         crossterm::terminal::enable_raw_mode()?;
         crossterm::execute!(stdout, EnterAlternateScreen)?;
+        crossterm::execute!(stdout, EnableBracketedPaste)?;
 
         let title = format!("iamb ({})", settings.profile.user_id);
         crossterm::execute!(stdout, SetTitle(title))?;
@@ -129,7 +141,14 @@ impl Application {
         let cmds = crate::commands::setup_commands();
 
         let mut locked = store.lock().await;
-        let win = IambWindow::open(IambId::Welcome, locked.deref_mut()).unwrap();
+
+        let win = settings
+            .tunables
+            .default_room
+            .and_then(|room| IambWindow::find(room, locked.deref_mut()).ok())
+            .or_else(|| IambWindow::open(IambId::Welcome, locked.deref_mut()).ok())
+            .unwrap();
+
         let cmd = CommandBarState::new(IambBufferId::Command, locked.deref_mut());
         let screen = ScreenState::new(win, cmd);
 
@@ -176,7 +195,7 @@ impl Application {
                 f.set_cursor(cx, cy);
             }
 
-            store.application.load_older(area.height as u32);
+            store.application.load_older(msg_load_req(area));
         })?;
 
         Ok(())
@@ -186,7 +205,8 @@ impl Application {
         loop {
             self.redraw(false, self.store.clone().lock().await.deref_mut())?;
 
-            if !poll(Duration::from_millis(500))? {
+            if !poll(Duration::from_secs(1))? {
+                // Redraw in case there's new messages to show.
                 continue;
             }
 
@@ -201,8 +221,21 @@ impl Application {
                 Event::Resize(_, _) => {
                     // We'll redraw for the new size next time step() is called.
                 },
-                Event::Paste(_) => {
-                    // Do nothing for now.
+                Event::Paste(s) => {
+                    let act = InsertTextAction::Transcribe(s, MoveDir1D::Previous, 1.into());
+                    let act = EditorAction::from(act);
+                    let ctx = ProgramContext::default();
+                    let mut store = self.store.lock().await;
+
+                    match self.screen.editor_command(&act, &ctx, store.deref_mut()) {
+                        Ok(None) => {},
+                        Ok(Some(info)) => {
+                            self.screen.push_info(info);
+                        },
+                        Err(e) => {
+                            self.screen.push_error(e);
+                        },
+                    }
                 },
             }
         }
@@ -422,13 +455,13 @@ async fn login(worker: Requester, settings: &ApplicationSettings) -> IambResult<
         match worker.login(LoginStyle::Password(password)) {
             Ok(info) => {
                 if let Some(msg) = info {
-                    println!("{}", msg);
+                    println!("{msg}");
                 }
 
                 break;
             },
             Err(err) => {
-                println!("Failed to login: {}", err);
+                println!("Failed to login: {err}");
                 continue;
             },
         }
@@ -438,7 +471,7 @@ async fn login(worker: Requester, settings: &ApplicationSettings) -> IambResult<
 }
 
 fn print_exit<T: Display, N>(v: T) -> N {
-    println!("{}", v);
+    println!("{v}");
     process::exit(2);
 }
 
@@ -456,6 +489,7 @@ async fn run(settings: ApplicationSettings) -> IambResult<()> {
     let orig_hook = std::panic::take_hook();
     std::panic::set_hook(Box::new(move |panic_info| {
         let _ = crossterm::terminal::disable_raw_mode();
+        let _ = crossterm::execute!(stdout(), DisableBracketedPaste);
         let _ = crossterm::execute!(stdout(), LeaveAlternateScreen);
         let _ = crossterm::execute!(stdout(), CursorShow);
         orig_hook(panic_info);
@@ -498,7 +532,7 @@ fn main() -> IambResult<()> {
         .thread_name_fn(|| {
             static ATOMIC_ID: AtomicUsize = AtomicUsize::new(0);
             let id = ATOMIC_ID.fetch_add(1, Ordering::SeqCst);
-            format!("iamb-worker-{}", id)
+            format!("iamb-worker-{id}")
         })
         .build()
         .unwrap();

src/message/html.rs

@@ -0,0 +1,942 @@
+//! # Rendering for formatted bodies
+//!
+//! This module contains the code for rendering messages that contained an
+//! "org.matrix.custom.html"-formatted body.
+//!
+//! The Matrix specification recommends limiting rendered tags and attributes to a safe subset of
+//! HTML. You can read more in section 11.2.1.1, "m.room.message msgtypes":
+//!
+//!   https://spec.matrix.org/unstable/client-server-api/#mroommessage-msgtypes
+//!
+//! This isn't as important for iamb, since it isn't a browser environment, but we do still map
+//! input onto an enum of the safe list of tags to keep it easy to understand and process.
+use std::ops::Deref;
+
+use css_color_parser::Color as CssColor;
+use markup5ever_rcdom::{Handle, NodeData, RcDom};
+use unicode_segmentation::UnicodeSegmentation;
+
+use html5ever::{
+    driver::{parse_fragment, ParseOpts},
+    interface::{Attribute, QualName},
+    local_name,
+    namespace_url,
+    ns,
+    tendril::{StrTendril, TendrilSink},
+};
+
+use modalkit::tui::{
+    layout::Alignment,
+    style::{Color, Modifier as StyleModifier, Style},
+    symbols::line,
+    text::{Span, Spans, Text},
+};
+
+use crate::{
+    message::printer::TextPrinter,
+    util::{join_cell_text, space_text},
+};
+
+struct BulletIterator {
+    style: ListStyle,
+    pos: usize,
+    len: usize,
+}
+
+impl BulletIterator {
+    fn width(&self) -> usize {
+        match self.style {
+            ListStyle::Unordered => 2,
+            ListStyle::Ordered => self.len.to_string().len() + 2,
+        }
+    }
+}
+
+impl Iterator for BulletIterator {
+    type Item = String;
+
+    fn next(&mut self) -> Option<Self::Item> {
+        if self.pos == self.len {
+            return None;
+        }
+
+        self.pos += 1;
+
+        let bullet = match self.style {
+            ListStyle::Unordered => "- ".to_string(),
+            ListStyle::Ordered => {
+                let w = self.len.to_string().len();
+                format!("{: >w$}. ", self.pos, w = w)
+            },
+        };
+
+        return Some(bullet);
+    }
+}
+
+#[derive(Clone, Copy, Debug)]
+pub enum ListStyle {
+    Ordered,
+    Unordered,
+}
+
+impl ListStyle {
+    fn bullets(&self, len: usize) -> BulletIterator {
+        BulletIterator { style: *self, pos: 0, len }
+    }
+}
+
+pub type StyleTreeChildren = Vec<StyleTreeNode>;
+
+pub enum CellType {
+    Data,
+    Header,
+}
+
+pub struct TableRow {
+    cells: Vec<(CellType, StyleTreeNode)>,
+}
+
+impl TableRow {
+    fn columns(&self) -> usize {
+        self.cells.len()
+    }
+}
+
+pub struct TableSection {
+    rows: Vec<TableRow>,
+}
+
+impl TableSection {
+    fn columns(&self) -> usize {
+        self.rows.iter().map(TableRow::columns).max().unwrap_or(0)
+    }
+}
+
+pub struct Table {
+    caption: Option<Box<StyleTreeNode>>,
+    sections: Vec<TableSection>,
+}
+
+impl Table {
+    fn columns(&self) -> usize {
+        self.sections.iter().map(TableSection::columns).max().unwrap_or(0)
+    }
+
+    fn to_text(&self, width: usize, style: Style) -> Text {
+        let mut text = Text::default();
+        let columns = self.columns();
+        let cell_total = width.saturating_sub(columns).saturating_sub(1);
+        let cell_min = cell_total / columns;
+        let mut cell_slop = cell_total - cell_min * columns;
+        let cell_widths = (0..columns)
+            .into_iter()
+            .map(|_| {
+                let slopped = cell_slop.min(1);
+                cell_slop -= slopped;
+                cell_min + slopped
+            })
+            .collect::<Vec<_>>();
+
+        let mut nrows = 0;
+
+        if let Some(caption) = &self.caption {
+            let subw = width.saturating_sub(6);
+            let mut printer = TextPrinter::new(subw, style, true).align(Alignment::Center);
+            caption.print(&mut printer, style);
+
+            for mut line in printer.finish().lines {
+                line.0.insert(0, Span::styled("   ", style));
+                line.0.push(Span::styled("   ", style));
+                text.lines.push(line);
+            }
+        }
+
+        for section in self.sections.iter() {
+            for row in section.rows.iter() {
+                let mut ruler = String::new();
+
+                for (i, w) in cell_widths.iter().enumerate() {
+                    let cross = match (nrows, i) {
+                        (0, 0) => line::TOP_LEFT,
+                        (0, _) => line::HORIZONTAL_DOWN,
+                        (_, 0) => line::VERTICAL_RIGHT,
+                        (_, _) => line::CROSS,
+                    };
+
+                    ruler.push_str(cross);
+
+                    for _ in 0..*w {
+                        ruler.push_str(line::HORIZONTAL);
+                    }
+                }
+
+                if nrows == 0 {
+                    ruler.push_str(line::TOP_RIGHT);
+                } else {
+                    ruler.push_str(line::VERTICAL_LEFT);
+                }
+
+                text.lines.push(Spans(vec![Span::styled(ruler, style)]));
+
+                let cells = cell_widths
+                    .iter()
+                    .enumerate()
+                    .map(|(i, w)| {
+                        let text = if let Some((kind, cell)) = row.cells.get(i) {
+                            let style = match kind {
+                                CellType::Header => style.add_modifier(StyleModifier::BOLD),
+                                CellType::Data => style,
+                            };
+
+                            cell.to_text(*w, style)
+                        } else {
+                            space_text(*w, style)
+                        };
+
+                        (text, *w)
+                    })
+                    .collect();
+
+                let joined = join_cell_text(cells, Span::styled(line::VERTICAL, style), style);
+                text.lines.extend(joined.lines);
+
+                nrows += 1;
+            }
+        }
+
+        if nrows > 0 {
+            let mut ruler = String::new();
+
+            for (i, w) in cell_widths.iter().enumerate() {
+                let cross = if i == 0 {
+                    line::BOTTOM_LEFT
+                } else {
+                    line::HORIZONTAL_UP
+                };
+
+                ruler.push_str(cross);
+
+                for _ in 0..*w {
+                    ruler.push_str(line::HORIZONTAL);
+                }
+            }
+
+            ruler.push_str(line::BOTTOM_RIGHT);
+            text.lines.push(Spans(vec![Span::styled(ruler, style)]));
+        }
+
+        text
+    }
+}
+
+pub enum StyleTreeNode {
+    Blockquote(Box<StyleTreeNode>),
+    Break,
+    Code(Box<StyleTreeNode>, Option<String>),
+    Header(Box<StyleTreeNode>, usize),
+    Image(Option<String>),
+    List(StyleTreeChildren, ListStyle),
+    Paragraph(Box<StyleTreeNode>),
+    Reply(Box<StyleTreeNode>),
+    Ruler,
+    Style(Box<StyleTreeNode>, Style),
+    Table(Table),
+    Text(String),
+    Sequence(StyleTreeChildren),
+}
+
+impl StyleTreeNode {
+    pub fn to_text(&self, width: usize, style: Style) -> Text {
+        let mut printer = TextPrinter::new(width, style, true);
+        self.print(&mut printer, style);
+        printer.finish()
+    }
+
+    pub fn print<'a>(&'a self, printer: &mut TextPrinter<'a>, style: Style) {
+        let width = printer.width();
+
+        match self {
+            StyleTreeNode::Blockquote(child) => {
+                let mut subp = printer.sub(4);
+                child.print(&mut subp, style);
+
+                for mut line in subp.finish() {
+                    line.0.insert(0, Span::styled("    ", style));
+                    printer.push_line(line);
+                }
+            },
+            StyleTreeNode::Code(child, _) => {
+                child.print(printer, style);
+            },
+            StyleTreeNode::Header(child, level) => {
+                let style = style.add_modifier(StyleModifier::BOLD);
+                let mut hashes = "#".repeat(*level);
+                hashes.push(' ');
+
+                printer.push_str(hashes, style);
+                child.print(printer, style);
+            },
+            StyleTreeNode::Image(None) => {},
+            StyleTreeNode::Image(Some(alt)) => {
+                printer.commit();
+                printer.push_str("Image Alt: ", Style::default());
+                printer.push_str(alt, Style::default());
+                printer.commit();
+            },
+            StyleTreeNode::List(children, lt) => {
+                let mut bullets = lt.bullets(children.len());
+                let liw = bullets.width();
+
+                for child in children {
+                    let mut subp = printer.sub(liw);
+                    let mut bullet = bullets.next();
+                    child.print(&mut subp, style);
+
+                    for mut line in subp.finish() {
+                        let leading = if let Some(bullet) = bullet.take() {
+                            Span::styled(bullet, style)
+                        } else {
+                            Span::styled(" ".repeat(liw), style)
+                        };
+
+                        line.0.insert(0, leading);
+                        printer.push_line(line);
+                    }
+                }
+            },
+            StyleTreeNode::Paragraph(child) => {
+                printer.push_break();
+                child.print(printer, style);
+                printer.commit();
+            },
+            StyleTreeNode::Reply(child) => {
+                if printer.hide_reply() {
+                    return;
+                }
+
+                printer.push_break();
+                child.print(printer, style);
+                printer.commit();
+            },
+            StyleTreeNode::Ruler => {
+                printer.push_str(line::HORIZONTAL.repeat(width), style);
+            },
+            StyleTreeNode::Table(table) => {
+                let text = table.to_text(width, style);
+                printer.push_text(text);
+            },
+            StyleTreeNode::Break => {
+                printer.push_break();
+            },
+            StyleTreeNode::Text(s) => {
+                printer.push_str(s.as_str(), style);
+            },
+
+            StyleTreeNode::Style(child, patch) => child.print(printer, style.patch(*patch)),
+            StyleTreeNode::Sequence(children) => {
+                for child in children {
+                    child.print(printer, style);
+                }
+            },
+        }
+    }
+}
+
+pub struct StyleTree {
+    children: StyleTreeChildren,
+}
+
+impl StyleTree {
+    pub fn to_text(&self, width: usize, style: Style, hide_reply: bool) -> Text<'_> {
+        let mut printer = TextPrinter::new(width, style, hide_reply);
+
+        for child in self.children.iter() {
+            child.print(&mut printer, style);
+        }
+
+        printer.finish()
+    }
+}
+
+fn c2c(handles: &[Handle]) -> Vec<StyleTreeNode> {
+    handles.iter().flat_map(h2t).collect()
+}
+
+fn c2t(handles: &[Handle]) -> Box<StyleTreeNode> {
+    let node = StyleTreeNode::Sequence(c2c(handles));
+
+    Box::new(node)
+}
+
+fn get_node(hdl: &Handle, want: &str) -> Option<StyleTreeNode> {
+    let node = hdl.deref();
+
+    if let NodeData::Element { name, .. } = &node.data {
+        if name.local.as_ref() != want {
+            return None;
+        }
+
+        let c = c2c(&node.children.borrow());
+        return Some(StyleTreeNode::Sequence(c));
+    } else {
+        return None;
+    }
+}
+
+fn li2t(hdl: &Handle) -> Option<StyleTreeNode> {
+    get_node(hdl, "li")
+}
+
+fn table_cell(hdl: &Handle) -> Option<(CellType, StyleTreeNode)> {
+    if let Some(node) = get_node(hdl, "th") {
+        return Some((CellType::Header, node));
+    }
+
+    Some((CellType::Data, get_node(hdl, "td")?))
+}
+
+fn table_row(hdl: &Handle) -> Option<TableRow> {
+    let node = hdl.deref();
+
+    if let NodeData::Element { name, .. } = &node.data {
+        if name.local.as_ref() != "tr" {
+            return None;
+        }
+
+        let cells = table_cells(&node.children.borrow());
+        return Some(TableRow { cells });
+    } else {
+        return None;
+    }
+}
+
+fn table_section(hdl: &Handle) -> Option<TableSection> {
+    let node = hdl.deref();
+
+    if let NodeData::Element { name, .. } = &node.data {
+        match name.local.as_ref() {
+            "thead" | "tbody" => {
+                let rows = table_rows(&node.children.borrow());
+
+                Some(TableSection { rows })
+            },
+            _ => None,
+        }
+    } else {
+        return None;
+    }
+}
+
+fn table_cells(handles: &[Handle]) -> Vec<(CellType, StyleTreeNode)> {
+    handles.iter().filter_map(table_cell).collect()
+}
+
+fn table_rows(handles: &[Handle]) -> Vec<TableRow> {
+    handles.iter().filter_map(table_row).collect()
+}
+
+fn table_sections(handles: &[Handle]) -> Vec<TableSection> {
+    handles.iter().filter_map(table_section).collect()
+}
+
+fn lic2t(handles: &[Handle]) -> StyleTreeChildren {
+    handles.iter().filter_map(li2t).collect()
+}
+
+fn attrs_to_alt(attrs: &[Attribute]) -> Option<String> {
+    for attr in attrs {
+        if attr.name.local.as_ref() != "alt" {
+            continue;
+        }
+
+        return Some(attr.value.to_string());
+    }
+
+    return None;
+}
+
+fn attrs_to_language(attrs: &[Attribute]) -> Option<String> {
+    for attr in attrs {
+        if attr.name.local.as_ref() != "class" {
+            continue;
+        }
+
+        for class in attr.value.as_ref().unicode_words() {
+            if class.len() > 9 && class.starts_with("language-") {
+                return Some(class[9..].to_string());
+            }
+        }
+    }
+
+    return None;
+}
+
+fn attrs_to_style(attrs: &[Attribute]) -> Style {
+    let mut style = Style::default();
+
+    for attr in attrs {
+        match attr.name.local.as_ref() {
+            "data-mx-bg-color" => {
+                if let Ok(rgb) = attr.value.as_ref().parse::<CssColor>() {
+                    let color = Color::Rgb(rgb.r, rgb.g, rgb.b);
+                    style = style.bg(color);
+                }
+            },
+            "data-mx-color" | "color" => {
+                if let Ok(rgb) = attr.value.as_ref().parse::<CssColor>() {
+                    let color = Color::Rgb(rgb.r, rgb.g, rgb.b);
+                    style = style.fg(color);
+                }
+            },
+            _ => continue,
+        }
+    }
+
+    return style;
+}
+
+fn h2t(hdl: &Handle) -> StyleTreeChildren {
+    let node = hdl.deref();
+
+    let tree = match &node.data {
+        NodeData::Document => *c2t(node.children.borrow().as_slice()),
+        NodeData::Text { contents } => StyleTreeNode::Text(contents.borrow().to_string()),
+        NodeData::Element { name, attrs, .. } => {
+            match name.local.as_ref() {
+                // Message that this one replies to.
+                "mx-reply" => StyleTreeNode::Reply(c2t(&node.children.borrow())),
+
+                // Style change
+                "b" | "strong" => {
+                    let c = c2t(&node.children.borrow());
+                    let s = Style::default().add_modifier(StyleModifier::BOLD);
+
+                    StyleTreeNode::Style(c, s)
+                },
+                "font" => {
+                    let c = c2t(&node.children.borrow());
+                    let s = attrs_to_style(&attrs.borrow());
+
+                    StyleTreeNode::Style(c, s)
+                },
+                "em" | "i" => {
+                    let c = c2t(&node.children.borrow());
+                    let s = Style::default().add_modifier(StyleModifier::ITALIC);
+
+                    StyleTreeNode::Style(c, s)
+                },
+                "span" => {
+                    let c = c2t(&node.children.borrow());
+                    let s = attrs_to_style(&attrs.borrow());
+
+                    StyleTreeNode::Style(c, s)
+                },
+                "del" | "strike" => {
+                    let c = c2t(&node.children.borrow());
+                    let s = Style::default().add_modifier(StyleModifier::CROSSED_OUT);
+
+                    StyleTreeNode::Style(c, s)
+                },
+                "u" => {
+                    let c = c2t(&node.children.borrow());
+                    let s = Style::default().add_modifier(StyleModifier::UNDERLINED);
+
+                    StyleTreeNode::Style(c, s)
+                },
+
+                // Lists
+                "ol" => StyleTreeNode::List(lic2t(&node.children.borrow()), ListStyle::Ordered),
+                "ul" => StyleTreeNode::List(lic2t(&node.children.borrow()), ListStyle::Unordered),
+
+                // Headers
+                "h1" => StyleTreeNode::Header(c2t(&node.children.borrow()), 1),
+                "h2" => StyleTreeNode::Header(c2t(&node.children.borrow()), 2),
+                "h3" => StyleTreeNode::Header(c2t(&node.children.borrow()), 3),
+                "h4" => StyleTreeNode::Header(c2t(&node.children.borrow()), 4),
+                "h5" => StyleTreeNode::Header(c2t(&node.children.borrow()), 5),
+                "h6" => StyleTreeNode::Header(c2t(&node.children.borrow()), 6),
+
+                // Table
+                "table" => {
+                    let sections = table_sections(&node.children.borrow());
+                    let caption = node
+                        .children
+                        .borrow()
+                        .iter()
+                        .find_map(|hdl| get_node(hdl, "caption"))
+                        .map(Box::new);
+                    let table = Table { caption, sections };
+
+                    StyleTreeNode::Table(table)
+                },
+
+                // Code blocks.
+                "code" => {
+                    let c = c2t(&node.children.borrow());
+                    let l = attrs_to_language(&attrs.borrow());
+
+                    StyleTreeNode::Code(c, l)
+                },
+
+                // Other text blocks.
+                "blockquote" => StyleTreeNode::Blockquote(c2t(&node.children.borrow())),
+                "div" | "p" => StyleTreeNode::Paragraph(c2t(&node.children.borrow())),
+
+                // No children.
+                "hr" => StyleTreeNode::Ruler,
+                "br" => StyleTreeNode::Break,
+
+                "img" => StyleTreeNode::Image(attrs_to_alt(&attrs.borrow())),
+
+                // These don't render in any special way.
+                "a" | "details" | "html" | "pre" | "summary" | "sub" | "sup" => {
+                    *c2t(&node.children.borrow())
+                },
+
+                _ => return vec![],
+            }
+        },
+
+        // These don't render as anything.
+        NodeData::Doctype { .. } => return vec![],
+        NodeData::Comment { .. } => return vec![],
+        NodeData::ProcessingInstruction { .. } => return vec![],
+    };
+
+    vec![tree]
+}
+
+fn dom_to_style_tree(dom: RcDom) -> StyleTree {
+    StyleTree { children: h2t(&dom.document) }
+}
+
+pub fn parse_matrix_html(s: &str) -> StyleTree {
+    let dom = parse_fragment(
+        RcDom::default(),
+        ParseOpts::default(),
+        QualName::new(None, ns!(), local_name!("div")),
+        vec![],
+    )
+    .one(StrTendril::from(s));
+
+    dom_to_style_tree(dom)
+}
+
+#[cfg(test)]
+pub mod tests {
+    use super::*;
+    use crate::util::space_span;
+
+    #[test]
+    fn test_header() {
+        let bold = Style::default().add_modifier(StyleModifier::BOLD);
+
+        let s = "<h1>Header 1</h1>";
+        let tree = parse_matrix_html(s);
+        let text = tree.to_text(20, Style::default(), false);
+        assert_eq!(text.lines, vec![Spans(vec![
+            Span::styled("# ", bold),
+            Span::styled("Header 1", bold),
+            space_span(10, Style::default())
+        ])]);
+
+        let s = "<h2>Header 2</h2>";
+        let tree = parse_matrix_html(s);
+        let text = tree.to_text(20, Style::default(), false);
+        assert_eq!(text.lines, vec![Spans(vec![
+            Span::styled("## ", bold),
+            Span::styled("Header 2", bold),
+            space_span(9, Style::default())
+        ])]);
+
+        let s = "<h3>Header 3</h3>";
+        let tree = parse_matrix_html(s);
+        let text = tree.to_text(20, Style::default(), false);
+        assert_eq!(text.lines, vec![Spans(vec![
+            Span::styled("### ", bold),
+            Span::styled("Header 3", bold),
+            space_span(8, Style::default())
+        ])]);
+
+        let s = "<h4>Header 4</h4>";
+        let tree = parse_matrix_html(s);
+        let text = tree.to_text(20, Style::default(), false);
+        assert_eq!(text.lines, vec![Spans(vec![
+            Span::styled("#### ", bold),
+            Span::styled("Header 4", bold),
+            space_span(7, Style::default())
+        ])]);
+
+        let s = "<h5>Header 5</h5>";
+        let tree = parse_matrix_html(s);
+        let text = tree.to_text(20, Style::default(), false);
+        assert_eq!(text.lines, vec![Spans(vec![
+            Span::styled("##### ", bold),
+            Span::styled("Header 5", bold),
+            space_span(6, Style::default())
+        ])]);
+
+        let s = "<h6>Header 6</h6>";
+        let tree = parse_matrix_html(s);
+        let text = tree.to_text(20, Style::default(), false);
+        assert_eq!(text.lines, vec![Spans(vec![
+            Span::styled("###### ", bold),
+            Span::styled("Header 6", bold),
+            space_span(5, Style::default())
+        ])]);
+    }
+
+    #[test]
+    fn test_style() {
+        let def = Style::default();
+        let bold = def.add_modifier(StyleModifier::BOLD);
+        let italic = def.add_modifier(StyleModifier::ITALIC);
+        let strike = def.add_modifier(StyleModifier::CROSSED_OUT);
+        let underl = def.add_modifier(StyleModifier::UNDERLINED);
+        let red = def.fg(Color::Rgb(0xff, 0x00, 0x00));
+
+        let s = "<b>Bold!</b>";
+        let tree = parse_matrix_html(s);
+        let text = tree.to_text(20, Style::default(), false);
+        assert_eq!(text.lines, vec![Spans(vec![
+            Span::styled("Bold!", bold),
+            space_span(15, def)
+        ])]);
+
+        let s = "<strong>Bold!</strong>";
+        let tree = parse_matrix_html(s);
+        let text = tree.to_text(20, Style::default(), false);
+        assert_eq!(text.lines, vec![Spans(vec![
+            Span::styled("Bold!", bold),
+            space_span(15, def)
+        ])]);
+
+        let s = "<i>Italic!</i>";
+        let tree = parse_matrix_html(s);
+        let text = tree.to_text(20, Style::default(), false);
+        assert_eq!(text.lines, vec![Spans(vec![
+            Span::styled("Italic!", italic),
+            space_span(13, def)
+        ])]);
+
+        let s = "<em>Italic!</em>";
+        let tree = parse_matrix_html(s);
+        let text = tree.to_text(20, Style::default(), false);
+        assert_eq!(text.lines, vec![Spans(vec![
+            Span::styled("Italic!", italic),
+            space_span(13, def)
+        ])]);
+
+        let s = "<del>Strikethrough!</del>";
+        let tree = parse_matrix_html(s);
+        let text = tree.to_text(20, Style::default(), false);
+        assert_eq!(text.lines, vec![Spans(vec![
+            Span::styled("Strikethrough!", strike),
+            space_span(6, def)
+        ])]);
+
+        let s = "<strike>Strikethrough!</strike>";
+        let tree = parse_matrix_html(s);
+        let text = tree.to_text(20, Style::default(), false);
+        assert_eq!(text.lines, vec![Spans(vec![
+            Span::styled("Strikethrough!", strike),
+            space_span(6, def)
+        ])]);
+
+        let s = "<u>Underline!</u>";
+        let tree = parse_matrix_html(s);
+        let text = tree.to_text(20, Style::default(), false);
+        assert_eq!(text.lines, vec![Spans(vec![
+            Span::styled("Underline!", underl),
+            space_span(10, def)
+        ])]);
+
+        let s = "<font color=\"#ff0000\">Red!</u>";
+        let tree = parse_matrix_html(s);
+        let text = tree.to_text(20, Style::default(), false);
+        assert_eq!(text.lines, vec![Spans(vec![Span::styled("Red!", red), space_span(16, def)])]);
+
+        let s = "<font color=\"red\">Red!</u>";
+        let tree = parse_matrix_html(s);
+        let text = tree.to_text(20, Style::default(), false);
+        assert_eq!(text.lines, vec![Spans(vec![Span::styled("Red!", red), space_span(16, def)])]);
+    }
+
+    #[test]
+    fn test_paragraph() {
+        let s = "<p>Hello world!</p><p>Content</p><p>Goodbye world!</p>";
+        let tree = parse_matrix_html(s);
+        let text = tree.to_text(10, Style::default(), false);
+        assert_eq!(text.lines.len(), 7);
+        assert_eq!(text.lines[0], Spans(vec![Span::raw("Hello worl")]));
+        assert_eq!(text.lines[1], Spans(vec![Span::raw("d!"), Span::raw("        ")]));
+        assert_eq!(text.lines[2], Spans(vec![Span::raw("          ")]));
+        assert_eq!(text.lines[3], Spans(vec![Span::raw("Content"), Span::raw("   ")]));
+        assert_eq!(text.lines[4], Spans(vec![Span::raw("          ")]));
+        assert_eq!(text.lines[5], Spans(vec![Span::raw("Goodbye wo")]));
+        assert_eq!(text.lines[6], Spans(vec![Span::raw("rld!"), Span::raw("      ")]));
+    }
+
+    #[test]
+    fn test_blockquote() {
+        let s = "<blockquote>Hello world!</blockquote>";
+        let tree = parse_matrix_html(s);
+        let text = tree.to_text(10, Style::default(), false);
+        assert_eq!(text.lines.len(), 2);
+        assert_eq!(text.lines[0], Spans(vec![Span::raw("    "), Span::raw("Hello ")]));
+        assert_eq!(text.lines[1], Spans(vec![Span::raw("    "), Span::raw("world!")]));
+    }
+
+    #[test]
+    fn test_list_unordered() {
+        let s = "<ul><li>List Item 1</li><li>List Item 2</li><li>List Item 3</li></ul>";
+        let tree = parse_matrix_html(s);
+        let text = tree.to_text(8, Style::default(), false);
+        assert_eq!(text.lines.len(), 6);
+        assert_eq!(text.lines[0], Spans(vec![Span::raw("- "), Span::raw("List I")]));
+        assert_eq!(text.lines[1], Spans(vec![Span::raw("  "), Span::raw("tem 1"), Span::raw(" ")]));
+        assert_eq!(text.lines[2], Spans(vec![Span::raw("- "), Span::raw("List I")]));
+        assert_eq!(text.lines[3], Spans(vec![Span::raw("  "), Span::raw("tem 2"), Span::raw(" ")]));
+        assert_eq!(text.lines[4], Spans(vec![Span::raw("- "), Span::raw("List I")]));
+        assert_eq!(text.lines[5], Spans(vec![Span::raw("  "), Span::raw("tem 3"), Span::raw(" ")]));
+    }
+
+    #[test]
+    fn test_list_ordered() {
+        let s = "<ol><li>List Item 1</li><li>List Item 2</li><li>List Item 3</li></ol>";
+        let tree = parse_matrix_html(s);
+        let text = tree.to_text(9, Style::default(), false);
+        assert_eq!(text.lines.len(), 6);
+        assert_eq!(text.lines[0], Spans(vec![Span::raw("1. "), Span::raw("List I")]));
+        assert_eq!(
+            text.lines[1],
+            Spans(vec![Span::raw("   "), Span::raw("tem 1"), Span::raw(" ")])
+        );
+        assert_eq!(text.lines[2], Spans(vec![Span::raw("2. "), Span::raw("List I")]));
+        assert_eq!(
+            text.lines[3],
+            Spans(vec![Span::raw("   "), Span::raw("tem 2"), Span::raw(" ")])
+        );
+        assert_eq!(text.lines[4], Spans(vec![Span::raw("3. "), Span::raw("List I")]));
+        assert_eq!(
+            text.lines[5],
+            Spans(vec![Span::raw("   "), Span::raw("tem 3"), Span::raw(" ")])
+        );
+    }
+
+    #[test]
+    fn test_table() {
+        let s = "<table>\
+                 <thead>\
+                 <tr><th>Column 1</th><th>Column 2</th><th>Column 3</th></tr>
+                 </thead>\
+                 <tbody>\
+                 <tr><td>a</td><td>b</td><td>c</td></tr>\
+                 <tr><td>a</td><td>b</td><td>c</td></tr>\
+                 <tr><td>a</td><td>b</td><td>c</td></tr>\
+                 </tbody></table>";
+        let tree = parse_matrix_html(s);
+        let text = tree.to_text(15, Style::default(), false);
+        let bold = Style::default().add_modifier(StyleModifier::BOLD);
+        assert_eq!(text.lines.len(), 11);
+
+        // Table header
+        assert_eq!(text.lines[0].0, vec![Span::raw("┌────┬────┬───┐")]);
+        assert_eq!(text.lines[1].0, vec![
+            Span::raw("│"),
+            Span::styled("Colu", bold),
+            Span::raw("│"),
+            Span::styled("Colu", bold),
+            Span::raw("│"),
+            Span::styled("Col", bold),
+            Span::raw("│")
+        ]);
+        assert_eq!(text.lines[2].0, vec![
+            Span::raw("│"),
+            Span::styled("mn 1", bold),
+            Span::raw("│"),
+            Span::styled("mn 2", bold),
+            Span::raw("│"),
+            Span::styled("umn", bold),
+            Span::raw("│")
+        ]);
+        assert_eq!(text.lines[3].0, vec![
+            Span::raw("│"),
+            Span::raw("    "),
+            Span::raw("│"),
+            Span::raw("    "),
+            Span::raw("│"),
+            Span::styled(" 3", bold),
+            Span::styled(" ", bold),
+            Span::raw("│")
+        ]);
+
+        // First row
+        assert_eq!(text.lines[4].0, vec![Span::raw("├────┼────┼───┤")]);
+        assert_eq!(text.lines[5].0, vec![
+            Span::raw("│"),
+            Span::raw("a"),
+            Span::raw("   "),
+            Span::raw("│"),
+            Span::raw("b"),
+            Span::raw("   "),
+            Span::raw("│"),
+            Span::raw("c"),
+            Span::raw("  "),
+            Span::raw("│")
+        ]);
+
+        // Second row
+        assert_eq!(text.lines[6].0, vec![Span::raw("├────┼────┼───┤")]);
+        assert_eq!(text.lines[7].0, vec![
+            Span::raw("│"),
+            Span::raw("a"),
+            Span::raw("   "),
+            Span::raw("│"),
+            Span::raw("b"),
+            Span::raw("   "),
+            Span::raw("│"),
+            Span::raw("c"),
+            Span::raw("  "),
+            Span::raw("│")
+        ]);
+
+        // Third row
+        assert_eq!(text.lines[8].0, vec![Span::raw("├────┼────┼───┤")]);
+        assert_eq!(text.lines[9].0, vec![
+            Span::raw("│"),
+            Span::raw("a"),
+            Span::raw("   "),
+            Span::raw("│"),
+            Span::raw("b"),
+            Span::raw("   "),
+            Span::raw("│"),
+            Span::raw("c"),
+            Span::raw("  "),
+            Span::raw("│")
+        ]);
+
+        // Bottom ruler
+        assert_eq!(text.lines[10].0, vec![Span::raw("└────┴────┴───┘")]);
+    }
+
+    #[test]
+    fn test_matrix_reply() {
+        let s = "<mx-reply>This was replied to</mx-reply>This is the reply";
+
+        let tree = parse_matrix_html(s);
+        let text = tree.to_text(10, Style::default(), false);
+        assert_eq!(text.lines.len(), 4);
+        assert_eq!(text.lines[0], Spans(vec![Span::raw("This was r")]));
+        assert_eq!(text.lines[1], Spans(vec![Span::raw("eplied to"), Span::raw(" ")]));
+        assert_eq!(text.lines[2], Spans(vec![Span::raw("This is th")]));
+        assert_eq!(text.lines[3], Spans(vec![Span::raw("e reply"), Span::raw("   ")]));
+
+        let tree = parse_matrix_html(s);
+        let text = tree.to_text(10, Style::default(), true);
+        assert_eq!(text.lines.len(), 2);
+        assert_eq!(text.lines[0], Spans(vec![Span::raw("This is th")]));
+        assert_eq!(text.lines[1], Spans(vec![Span::raw("e reply"), Span::raw("   ")]));
+    }
+}

src/message/mod.rs

@@ -4,26 +4,30 @@ use std::collections::hash_map::DefaultHasher;
 use std::collections::BTreeMap;
 use std::convert::TryFrom;
 use std::hash::{Hash, Hasher};
-use std::str::Lines;
+use std::slice::Iter;
 
-use chrono::{DateTime, NaiveDateTime, Utc};
-use unicode_segmentation::UnicodeSegmentation;
+use chrono::{DateTime, Local as LocalTz, NaiveDateTime, TimeZone};
 use unicode_width::UnicodeWidthStr;
 
 use matrix_sdk::ruma::{
     events::{
         room::{
             message::{
+                FormattedBody,
+                MessageFormat,
                 MessageType,
                 OriginalRoomMessageEvent,
                 RedactedRoomMessageEvent,
+                Relation,
                 RoomMessageEvent,
                 RoomMessageEventContent,
             },
             redaction::SyncRoomRedactionEvent,
         },
+        AnyMessageLikeEvent,
         Redact,
     },
+    EventId,
     MilliSecondsSinceUnixEpoch,
     OwnedEventId,
     OwnedUserId,
@@ -33,6 +37,7 @@ use matrix_sdk::ruma::{
 
 use modalkit::tui::{
     style::{Modifier as StyleModifier, Style},
+    symbols::line::THICK_VERTICAL,
     text::{Span, Spans, Text},
 };
 
@@ -41,84 +46,53 @@ use modalkit::editing::{base::ViewportContext, cursor::Cursor};
 use crate::{
     base::{IambResult, RoomInfo},
     config::ApplicationSettings,
+    message::html::{parse_matrix_html, StyleTree},
+    util::{space_span, wrapped_text},
 };
 
-pub type MessageFetchResult = IambResult<(Option<String>, Vec<RoomMessageEvent>)>;
+mod html;
+mod printer;
+
+pub type MessageFetchResult = IambResult<(Option<String>, Vec<AnyMessageLikeEvent>)>;
 pub type MessageKey = (MessageTimeStamp, OwnedEventId);
 pub type Messages = BTreeMap<MessageKey, Message>;
 
+const fn span_static(s: &'static str) -> Span<'static> {
+    Span {
+        content: Cow::Borrowed(s),
+        style: Style {
+            fg: None,
+            bg: None,
+            add_modifier: StyleModifier::empty(),
+            sub_modifier: StyleModifier::empty(),
+        },
+    }
+}
+
+const BOLD_STYLE: Style = Style {
+    fg: None,
+    bg: None,
+    add_modifier: StyleModifier::BOLD,
+    sub_modifier: StyleModifier::empty(),
+};
+
 const USER_GUTTER: usize = 30;
 const TIME_GUTTER: usize = 12;
+const READ_GUTTER: usize = 5;
 const MIN_MSG_LEN: usize = 30;
 
 const USER_GUTTER_EMPTY: &str = "                              ";
-const USER_GUTTER_EMPTY_SPAN: Span<'static> = Span {
-    content: Cow::Borrowed(USER_GUTTER_EMPTY),
-    style: Style {
-        fg: None,
-        bg: None,
-        add_modifier: StyleModifier::empty(),
-        sub_modifier: StyleModifier::empty(),
-    },
-};
+const USER_GUTTER_EMPTY_SPAN: Span<'static> = span_static(USER_GUTTER_EMPTY);
 
-struct WrappedLinesIterator<'a> {
-    iter: Lines<'a>,
-    curr: Option<&'a str>,
-    width: usize,
-}
+const TIME_GUTTER_EMPTY: &str = "            ";
+const TIME_GUTTER_EMPTY_SPAN: Span<'static> = span_static(TIME_GUTTER_EMPTY);
 
-impl<'a> WrappedLinesIterator<'a> {
-    fn new(input: &'a str, width: usize) -> Self {
-        WrappedLinesIterator { iter: input.lines(), curr: None, width }
-    }
-}
+#[inline]
+fn millis_to_datetime(ms: UInt) -> DateTime<LocalTz> {
+    let time = i64::from(ms) / 1000;
+    let time = NaiveDateTime::from_timestamp_opt(time, 0).unwrap_or_default();
 
-impl<'a> Iterator for WrappedLinesIterator<'a> {
-    type Item = (&'a str, usize);
-
-    fn next(&mut self) -> Option<Self::Item> {
-        if self.curr.is_none() {
-            self.curr = self.iter.next();
-        }
-
-        if let Some(s) = self.curr.take() {
-            let width = UnicodeWidthStr::width(s);
-
-            if width <= self.width {
-                return Some((s, width));
-            } else {
-                // Find where to split the line.
-                let mut width = 0;
-                let mut idx = 0;
-
-                for (i, g) in UnicodeSegmentation::grapheme_indices(s, true) {
-                    let gw = UnicodeWidthStr::width(g);
-                    idx = i;
-
-                    if width + gw > self.width {
-                        break;
-                    }
-
-                    width += gw;
-                }
-
-                self.curr = Some(&s[idx..]);
-
-                return Some((&s[..idx], width));
-            }
-        } else {
-            return None;
-        }
-    }
-}
-
-fn wrap(input: &str, width: usize) -> WrappedLinesIterator<'_> {
-    WrappedLinesIterator::new(input, width)
-}
-
-fn space(width: usize) -> String {
-    " ".repeat(width)
+    LocalTz.from_utc_datetime(&time)
 }
 
 #[derive(thiserror::Error, Debug)]
@@ -137,14 +111,31 @@ pub enum MessageTimeStamp {
 }
 
 impl MessageTimeStamp {
-    fn show(&self) -> Option<Span> {
+    fn as_datetime(&self) -> DateTime<LocalTz> {
         match self {
-            MessageTimeStamp::OriginServer(ts) => {
-                let time = i64::from(*ts) / 1000;
-                let time = NaiveDateTime::from_timestamp_opt(time, 0)?;
-                let time = DateTime::<Utc>::from_utc(time, Utc);
-                let time = time.format("%T");
-                let time = format!("  [{}]", time);
+            MessageTimeStamp::OriginServer(ms) => millis_to_datetime(*ms),
+            MessageTimeStamp::LocalEcho => LocalTz::now(),
+        }
+    }
+
+    fn same_day(&self, other: &Self) -> bool {
+        let dt1 = self.as_datetime();
+        let dt2 = other.as_datetime();
+
+        dt1.date_naive() == dt2.date_naive()
+    }
+
+    fn show_date(&self) -> Option<Span> {
+        let time = self.as_datetime().format("%A, %B %d %Y").to_string();
+
+        Span::styled(time, BOLD_STYLE).into()
+    }
+
+    fn show_time(&self) -> Option<Span> {
+        match self {
+            MessageTimeStamp::OriginServer(ms) => {
+                let time = millis_to_datetime(*ms).format("%T");
+                let time = format!("  [{time}]");
 
                 Span::raw(time).into()
             },
@@ -181,6 +172,12 @@ impl PartialOrd for MessageTimeStamp {
     }
 }
 
+impl From<UInt> for MessageTimeStamp {
+    fn from(millis: UInt) -> Self {
+        MessageTimeStamp::OriginServer(millis)
+    }
+}
+
 impl From<MilliSecondsSinceUnixEpoch> for MessageTimeStamp {
     fn from(millis: MilliSecondsSinceUnixEpoch) -> Self {
         MessageTimeStamp::OriginServer(millis.0)
@@ -210,7 +207,7 @@ impl TryFrom<usize> for MessageTimeStamp {
             let n = u64::try_from(u)?;
             let n = UInt::try_from(n).map_err(TimeStampIntError::UIntError)?;
 
-            Ok(MessageTimeStamp::OriginServer(n))
+            Ok(MessageTimeStamp::from(n))
         }
     }
 }
@@ -323,13 +320,21 @@ impl PartialOrd for MessageCursor {
 pub enum MessageEvent {
     Original(Box<OriginalRoomMessageEvent>),
     Redacted(Box<RedactedRoomMessageEvent>),
-    Local(Box<RoomMessageEventContent>),
+    Local(OwnedEventId, Box<RoomMessageEventContent>),
 }
 
 impl MessageEvent {
-    pub fn show(&self) -> Cow<'_, str> {
+    pub fn event_id(&self) -> &EventId {
         match self {
-            MessageEvent::Original(ev) => show_room_content(&ev.content),
+            MessageEvent::Original(ev) => ev.event_id.as_ref(),
+            MessageEvent::Redacted(ev) => ev.event_id.as_ref(),
+            MessageEvent::Local(event_id, _) => event_id.as_ref(),
+        }
+    }
+
+    pub fn body(&self) -> Cow<'_, str> {
+        match self {
+            MessageEvent::Original(ev) => body_cow_content(&ev.content),
             MessageEvent::Redacted(ev) => {
                 let reason = ev
                     .unsigned
@@ -339,19 +344,37 @@ impl MessageEvent {
                     .and_then(|r| r.content.reason.as_ref());
 
                 if let Some(r) = reason {
-                    Cow::Owned(format!("[Redacted: {:?}]", r))
+                    Cow::Owned(format!("[Redacted: {r:?}]"))
                 } else {
                     Cow::Borrowed("[Redacted]")
                 }
             },
-            MessageEvent::Local(content) => show_room_content(content),
+            MessageEvent::Local(_, content) => body_cow_content(content),
+        }
+    }
+
+    pub fn html(&self) -> Option<StyleTree> {
+        let content = match self {
+            MessageEvent::Original(ev) => &ev.content,
+            MessageEvent::Redacted(_) => return None,
+            MessageEvent::Local(_, content) => content,
+        };
+
+        if let MessageType::Text(content) = &content.msgtype {
+            if let Some(FormattedBody { format: MessageFormat::Html, body }) = &content.formatted {
+                Some(parse_matrix_html(body.as_str()))
+            } else {
+                None
+            }
+        } else {
+            None
         }
     }
 
     pub fn redact(&mut self, redaction: SyncRoomRedactionEvent, version: &RoomVersionId) {
         match self {
             MessageEvent::Redacted(_) => return,
-            MessageEvent::Local(_) => return,
+            MessageEvent::Local(_, _) => return,
             MessageEvent::Original(ev) => {
                 let redacted = ev.clone().redact(redaction, version);
                 *self = MessageEvent::Redacted(Box::new(redacted));
@@ -360,18 +383,14 @@ impl MessageEvent {
     }
 }
 
-fn show_room_content(content: &RoomMessageEventContent) -> Cow<'_, str> {
+fn body_cow_content(content: &RoomMessageEventContent) -> Cow<'_, str> {
     let s = match &content.msgtype {
-        MessageType::Text(content) => content.body.as_ref(),
+        MessageType::Text(content) => content.body.as_str(),
+        MessageType::VerificationRequest(_) => "[Verification Request]",
         MessageType::Emote(content) => content.body.as_ref(),
         MessageType::Notice(content) => content.body.as_str(),
         MessageType::ServerNotice(content) => content.body.as_str(),
 
-        MessageType::VerificationRequest(_) => {
-            // XXX: implement
-
-            return Cow::Owned("[verification request]".into());
-        },
         MessageType::Audio(content) => {
             return Cow::Owned(format!("[Attached Audio: {}]", content.body));
         },
@@ -392,37 +411,156 @@ fn show_room_content(content: &RoomMessageEventContent) -> Cow<'_, str> {
     Cow::Borrowed(s)
 }
 
-#[derive(Clone)]
+enum MessageColumns {
+    /// Four columns: sender, message, timestamp, read receipts.
+    Four,
+
+    /// Three columns: sender, message, timestamp.
+    Three,
+
+    /// Two columns: sender, message.
+    Two,
+
+    /// One column: message with sender on line before the message.
+    One,
+}
+
+struct MessageFormatter<'a> {
+    settings: &'a ApplicationSettings,
+
+    /// How many columns to print.
+    cols: MessageColumns,
+
+    /// The full, original width.
+    orig: usize,
+
+    /// The width that the message contents need to fill.
+    fill: usize,
+
+    /// The formatted Span for the message sender.
+    user: Option<Span<'a>>,
+
+    /// The time the message was sent.
+    time: Option<Span<'a>>,
+
+    /// The date the message was sent.
+    date: Option<Span<'a>>,
+
+    /// Iterator over the users who have read up to this message.
+    read: Iter<'a, OwnedUserId>,
+}
+
+impl<'a> MessageFormatter<'a> {
+    fn width(&self) -> usize {
+        self.fill
+    }
+
+    #[inline]
+    fn push_spans(&mut self, spans: Spans<'a>, style: Style, text: &mut Text<'a>) {
+        if let Some(date) = self.date.take() {
+            let len = date.content.as_ref().len();
+            let padding = self.orig.saturating_sub(len);
+            let leading = space_span(padding / 2, Style::default());
+            let trailing = space_span(padding.saturating_sub(padding / 2), Style::default());
+
+            text.lines.push(Spans(vec![leading, date, trailing]));
+        }
+
+        match self.cols {
+            MessageColumns::Four => {
+                let settings = self.settings;
+                let user = self.user.take().unwrap_or(USER_GUTTER_EMPTY_SPAN);
+                let time = self.time.take().unwrap_or(TIME_GUTTER_EMPTY_SPAN);
+
+                let mut line = vec![user];
+                line.extend(spans.0);
+                line.push(time);
+
+                // Show read receipts.
+                let user_char =
+                    |user: &'a OwnedUserId| -> Span<'a> { settings.get_user_char_span(user) };
+
+                let a = self.read.next().map(user_char).unwrap_or_else(|| Span::raw(" "));
+                let b = self.read.next().map(user_char).unwrap_or_else(|| Span::raw(" "));
+                let c = self.read.next().map(user_char).unwrap_or_else(|| Span::raw(" "));
+
+                line.push(Span::raw(" "));
+                line.push(c);
+                line.push(b);
+                line.push(a);
+                line.push(Span::raw(" "));
+
+                text.lines.push(Spans(line))
+            },
+            MessageColumns::Three => {
+                let user = self.user.take().unwrap_or(USER_GUTTER_EMPTY_SPAN);
+                let time = self.time.take().unwrap_or_else(|| Span::from(""));
+
+                let mut line = vec![user];
+                line.extend(spans.0);
+                line.push(time);
+
+                text.lines.push(Spans(line))
+            },
+            MessageColumns::Two => {
+                let user = self.user.take().unwrap_or(USER_GUTTER_EMPTY_SPAN);
+                let mut line = vec![user];
+                line.extend(spans.0);
+
+                text.lines.push(Spans(line));
+            },
+            MessageColumns::One => {
+                if let Some(user) = self.user.take() {
+                    text.lines.push(Spans(vec![user]));
+                }
+
+                let leading = space_span(2, style);
+                let mut line = vec![leading];
+                line.extend(spans.0);
+
+                text.lines.push(Spans(line));
+            },
+        }
+    }
+
+    fn push_text(&mut self, append: Text<'a>, style: Style, text: &mut Text<'a>) {
+        for line in append.lines.into_iter() {
+            self.push_spans(line, style, text);
+        }
+    }
+}
+
 pub struct Message {
     pub event: MessageEvent,
     pub sender: OwnedUserId,
     pub timestamp: MessageTimeStamp,
     pub downloaded: bool,
+    pub html: Option<StyleTree>,
 }
 
 impl Message {
     pub fn new(event: MessageEvent, sender: OwnedUserId, timestamp: MessageTimeStamp) -> Self {
-        Message { event, sender, timestamp, downloaded: false }
+        let html = event.html();
+        let downloaded = false;
+
+        Message { event, sender, timestamp, downloaded, html }
     }
 
-    pub fn show(
-        &self,
-        prev: Option<&Message>,
-        selected: bool,
-        vwctx: &ViewportContext<MessageCursor>,
-        settings: &ApplicationSettings,
-    ) -> Text {
-        let width = vwctx.get_width();
-        let mut msg = self.event.show();
+    pub fn reply_to(&self) -> Option<OwnedEventId> {
+        let content = match &self.event {
+            MessageEvent::Local(_, content) => content,
+            MessageEvent::Original(ev) => &ev.content,
+            MessageEvent::Redacted(_) => return None,
+        };
 
-        if self.downloaded {
-            msg.to_mut().push_str(" \u{2705}");
+        if let Some(Relation::Reply { in_reply_to }) = &content.relates_to {
+            Some(in_reply_to.event_id.clone())
+        } else {
+            None
         }
+    }
 
-        let msg = msg.as_ref();
-
-        let mut lines = vec![];
-
+    fn get_render_style(&self, selected: bool) -> Style {
         let mut style = Style::default();
 
         if selected {
@@ -433,54 +571,174 @@ impl Message {
             style = style.add_modifier(StyleModifier::ITALIC);
         }
 
-        if USER_GUTTER + TIME_GUTTER + MIN_MSG_LEN <= width {
-            let lw = width - USER_GUTTER - TIME_GUTTER;
+        return style;
+    }
 
-            for (i, (line, w)) in wrap(msg, lw).enumerate() {
-                let line = Span::styled(line.to_string(), style);
-                let trailing = Span::styled(space(lw.saturating_sub(w)), style);
+    fn get_render_format<'a>(
+        &'a self,
+        prev: Option<&Message>,
+        width: usize,
+        info: &'a RoomInfo,
+        settings: &'a ApplicationSettings,
+    ) -> MessageFormatter<'a> {
+        let orig = width;
+        let date = match &prev {
+            Some(prev) if prev.timestamp.same_day(&self.timestamp) => None,
+            _ => self.timestamp.show_date(),
+        };
 
-                if i == 0 {
-                    let user = self.show_sender(prev, true, settings);
+        if USER_GUTTER + TIME_GUTTER + READ_GUTTER + MIN_MSG_LEN <= width &&
+            settings.tunables.read_receipt_display
+        {
+            let cols = MessageColumns::Four;
+            let fill = width - USER_GUTTER - TIME_GUTTER - READ_GUTTER;
+            let user = self.show_sender(prev, true, settings);
+            let time = self.timestamp.show_time();
+            let read = match info.receipts.get(self.event.event_id()) {
+                Some(read) => read.iter(),
+                None => [].iter(),
+            };
 
-                    if let Some(time) = self.timestamp.show() {
-                        lines.push(Spans(vec![user, line, trailing, time]))
+            MessageFormatter { settings, cols, orig, fill, user, date, time, read }
+        } else if USER_GUTTER + TIME_GUTTER + MIN_MSG_LEN <= width {
+            let cols = MessageColumns::Three;
+            let fill = width - USER_GUTTER - TIME_GUTTER;
+            let user = self.show_sender(prev, true, settings);
+            let time = self.timestamp.show_time();
+            let read = [].iter();
+
+            MessageFormatter { settings, cols, orig, fill, user, date, time, read }
+        } else if USER_GUTTER + MIN_MSG_LEN <= width {
+            let cols = MessageColumns::Two;
+            let fill = width - USER_GUTTER;
+            let user = self.show_sender(prev, true, settings);
+            let time = None;
+            let read = [].iter();
+
+            MessageFormatter { settings, cols, orig, fill, user, date, time, read }
+        } else {
+            let cols = MessageColumns::One;
+            let fill = width.saturating_sub(2);
+            let user = self.show_sender(prev, false, settings);
+            let time = None;
+            let read = [].iter();
+
+            MessageFormatter { settings, cols, orig, fill, user, date, time, read }
+        }
+    }
+
+    pub fn show<'a>(
+        &'a self,
+        prev: Option<&Message>,
+        selected: bool,
+        vwctx: &ViewportContext<MessageCursor>,
+        info: &'a RoomInfo,
+        settings: &'a ApplicationSettings,
+    ) -> Text<'a> {
+        let width = vwctx.get_width();
+
+        let style = self.get_render_style(selected);
+        let mut fmt = self.get_render_format(prev, width, info, settings);
+        let mut text = Text { lines: vec![] };
+        let width = fmt.width();
+
+        // Show the message that this one replied to, if any.
+        let reply = self.reply_to().and_then(|e| info.get_event(&e));
+
+        if let Some(r) = &reply {
+            let w = width.saturating_sub(2);
+            let mut replied = r.show_msg(w, style, true);
+            let mut sender = r.sender_span(settings);
+            let sender_width = UnicodeWidthStr::width(sender.content.as_ref());
+            let trailing = w.saturating_sub(sender_width + 1);
+
+            sender.style = sender.style.patch(style);
+
+            fmt.push_spans(
+                Spans(vec![
+                    Span::styled(" ", style),
+                    Span::styled(THICK_VERTICAL, style),
+                    sender,
+                    Span::styled(":", style),
+                    space_span(trailing, style),
+                ]),
+                style,
+                &mut text,
+            );
+
+            for line in replied.lines.iter_mut() {
+                line.0.insert(0, Span::styled(THICK_VERTICAL, style));
+                line.0.insert(0, Span::styled(" ", style));
+            }
+
+            fmt.push_text(replied, style, &mut text);
+        }
+
+        // Now show the message contents, and the inlined reply if we couldn't find it above.
+        let msg = self.show_msg(width, style, reply.is_some());
+        fmt.push_text(msg, style, &mut text);
+
+        if text.lines.is_empty() {
+            // If there was nothing in the body, just show an empty message.
+            fmt.push_spans(space_span(width, style).into(), style, &mut text);
+        }
+
+        if settings.tunables.reaction_display {
+            let mut emojis = printer::TextPrinter::new(width, style, false);
+            let mut reactions = 0;
+
+            for (key, count) in info.get_reactions(self.event.event_id()).into_iter() {
+                if reactions != 0 {
+                    emojis.push_str(" ", style);
+                }
+
+                let name = if settings.tunables.reaction_shortcode_display {
+                    if let Some(emoji) = emojis::get(key) {
+                        if let Some(short) = emoji.shortcode() {
+                            short
+                        } else {
+                            // No ASCII shortcode name to show.
+                            continue;
+                        }
+                    } else if key.chars().all(|c| c.is_ascii_alphanumeric()) {
+                        key
                     } else {
-                        lines.push(Spans(vec![user, line, trailing]))
+                        // Not an Emoji or a printable ASCII string.
+                        continue;
                     }
                 } else {
-                    let space = USER_GUTTER_EMPTY_SPAN;
-
-                    lines.push(Spans(vec![space, line, trailing]))
-                }
-            }
-        } else if USER_GUTTER + MIN_MSG_LEN <= width {
-            let lw = width - USER_GUTTER;
-
-            for (i, (line, w)) in wrap(msg, lw).enumerate() {
-                let line = Span::styled(line.to_string(), style);
-                let trailing = Span::styled(space(lw.saturating_sub(w)), style);
-
-                let prefix = if i == 0 {
-                    self.show_sender(prev, true, settings)
-                } else {
-                    USER_GUTTER_EMPTY_SPAN
+                    key
                 };
 
-                lines.push(Spans(vec![prefix, line, trailing]))
+                emojis.push_str(format!("[{name} {count}]"), style);
+
+                reactions += 1;
             }
-        } else {
-            lines.push(Spans::from(self.show_sender(prev, false, settings)));
 
-            for (line, _) in wrap(msg, width.saturating_sub(2)) {
-                let line = format!("  {}", line);
-                let line = Span::styled(line, style);
-
-                lines.push(Spans(vec![line]))
+            if reactions > 0 {
+                fmt.push_text(emojis.finish(), style, &mut text);
             }
         }
 
-        return Text { lines };
+        return text;
+    }
+
+    pub fn show_msg(&self, width: usize, style: Style, hide_reply: bool) -> Text {
+        if let Some(html) = &self.html {
+            html.to_text(width, style, hide_reply)
+        } else {
+            let mut msg = self.event.body();
+
+            if self.downloaded {
+                msg.to_mut().push_str(" \u{2705}");
+            }
+
+            wrapped_text(msg, width, style)
+        }
+    }
+
+    fn sender_span(&self, settings: &ApplicationSettings) -> Span {
+        settings.get_user_span(self.sender.as_ref())
     }
 
     fn show_sender(
@@ -488,14 +746,14 @@ impl Message {
         prev: Option<&Message>,
         align_right: bool,
         settings: &ApplicationSettings,
-    ) -> Span {
-        let user = if matches!(prev, Some(prev) if self.sender == prev.sender) {
-            USER_GUTTER_EMPTY_SPAN
-        } else {
-            settings.get_user_span(self.sender.as_ref())
-        };
+    ) -> Option<Span> {
+        if let Some(prev) = prev {
+            if self.sender == prev.sender && self.timestamp.same_day(&prev.timestamp) {
+                return None;
+            }
+        }
 
-        let Span { content, style } = user;
+        let Span { content, style } = self.sender_span(settings);
         let stop = content.len().min(28);
         let s = &content[..stop];
 
@@ -505,7 +763,7 @@ impl Message {
             format!("{: <width$}  ", s, width = 28)
         };
 
-        Span::styled(sender, style)
+        Span::styled(sender, style).into()
     }
 }
 
@@ -540,7 +798,7 @@ impl From<RoomMessageEvent> for Message {
 
 impl ToString for Message {
     fn to_string(&self) -> String {
-        self.event.show().into_owned()
+        self.event.body().into_owned()
     }
 }
 
@@ -549,47 +807,6 @@ pub mod tests {
     use super::*;
     use crate::tests::*;
 
-    #[test]
-    fn test_wrapped_lines_ascii() {
-        let s = "hello world!\nabcdefghijklmnopqrstuvwxyz\ngoodbye";
-
-        let mut iter = wrap(s, 100);
-        assert_eq!(iter.next(), Some(("hello world!", 12)));
-        assert_eq!(iter.next(), Some(("abcdefghijklmnopqrstuvwxyz", 26)));
-        assert_eq!(iter.next(), Some(("goodbye", 7)));
-        assert_eq!(iter.next(), None);
-
-        let mut iter = wrap(s, 5);
-        assert_eq!(iter.next(), Some(("hello", 5)));
-        assert_eq!(iter.next(), Some((" worl", 5)));
-        assert_eq!(iter.next(), Some(("d!", 2)));
-        assert_eq!(iter.next(), Some(("abcde", 5)));
-        assert_eq!(iter.next(), Some(("fghij", 5)));
-        assert_eq!(iter.next(), Some(("klmno", 5)));
-        assert_eq!(iter.next(), Some(("pqrst", 5)));
-        assert_eq!(iter.next(), Some(("uvwxy", 5)));
-        assert_eq!(iter.next(), Some(("z", 1)));
-        assert_eq!(iter.next(), Some(("goodb", 5)));
-        assert_eq!(iter.next(), Some(("ye", 2)));
-        assert_eq!(iter.next(), None);
-    }
-
-    #[test]
-    fn test_wrapped_lines_unicode() {
-        let s = "ＣＨＩＣＫＥＮ";
-
-        let mut iter = wrap(s, 14);
-        assert_eq!(iter.next(), Some((s, 14)));
-        assert_eq!(iter.next(), None);
-
-        let mut iter = wrap(s, 5);
-        assert_eq!(iter.next(), Some(("ＣＨ", 4)));
-        assert_eq!(iter.next(), Some(("ＩＣ", 4)));
-        assert_eq!(iter.next(), Some(("ＫＥ", 4)));
-        assert_eq!(iter.next(), Some(("Ｎ", 2)));
-        assert_eq!(iter.next(), None);
-    }
-
     #[test]
     fn test_mc_cmp() {
         let mc1 = MessageCursor::from(MSG1_KEY.clone());

src/message/printer.rs

@@ -0,0 +1,157 @@
+use std::borrow::Cow;
+
+use modalkit::tui::layout::Alignment;
+use modalkit::tui::style::Style;
+use modalkit::tui::text::{Span, Spans, Text};
+use unicode_width::UnicodeWidthStr;
+
+use crate::util::{space_span, take_width};
+
+pub struct TextPrinter<'a> {
+    text: Text<'a>,
+    width: usize,
+    base_style: Style,
+    hide_reply: bool,
+
+    alignment: Alignment,
+    curr_spans: Vec<Span<'a>>,
+    curr_width: usize,
+}
+
+impl<'a> TextPrinter<'a> {
+    pub fn new(width: usize, base_style: Style, hide_reply: bool) -> Self {
+        TextPrinter {
+            text: Text::default(),
+            width,
+            base_style,
+            hide_reply,
+
+            alignment: Alignment::Left,
+            curr_spans: vec![],
+            curr_width: 0,
+        }
+    }
+
+    pub fn align(mut self, alignment: Alignment) -> Self {
+        self.alignment = alignment;
+        self
+    }
+
+    pub fn hide_reply(&self) -> bool {
+        self.hide_reply
+    }
+
+    pub fn width(&self) -> usize {
+        self.width
+    }
+
+    pub fn sub(&self, indent: usize) -> Self {
+        TextPrinter {
+            text: Text::default(),
+            width: self.width.saturating_sub(indent),
+            base_style: self.base_style,
+            hide_reply: self.hide_reply,
+
+            alignment: self.alignment,
+            curr_spans: vec![],
+            curr_width: 0,
+        }
+    }
+
+    fn remaining(&self) -> usize {
+        self.width - self.curr_width
+    }
+
+    pub fn commit(&mut self) {
+        if self.curr_width > 0 {
+            self.push_break();
+        }
+    }
+
+    fn push(&mut self) {
+        self.curr_width = 0;
+        self.text.lines.push(Spans(std::mem::take(&mut self.curr_spans)));
+    }
+
+    pub fn push_break(&mut self) {
+        if self.curr_width == 0 && self.text.lines.is_empty() {
+            // Disallow leading breaks.
+            return;
+        }
+
+        let remaining = self.remaining();
+
+        if remaining > 0 {
+            match self.alignment {
+                Alignment::Left => {
+                    let tspan = space_span(remaining, self.base_style);
+                    self.curr_spans.push(tspan);
+                },
+                Alignment::Center => {
+                    let trailing = remaining / 2;
+                    let leading = remaining - trailing;
+
+                    let tspan = space_span(trailing, self.base_style);
+                    let lspan = space_span(leading, self.base_style);
+
+                    self.curr_spans.push(tspan);
+                    self.curr_spans.insert(0, lspan);
+                },
+                Alignment::Right => {
+                    let lspan = space_span(remaining, self.base_style);
+                    self.curr_spans.insert(0, lspan);
+                },
+            }
+        }
+
+        self.push();
+    }
+
+    pub fn push_str<T>(&mut self, s: T, style: Style)
+    where
+        T: Into<Cow<'a, str>>,
+    {
+        let style = self.base_style.patch(style);
+        let mut cow = s.into();
+
+        loop {
+            let sw = UnicodeWidthStr::width(cow.as_ref());
+
+            if self.curr_width + sw <= self.width {
+                // The text fits within the current line.
+                self.curr_spans.push(Span::styled(cow, style));
+                self.curr_width += sw;
+                break;
+            }
+
+            // Take a leading portion of the text that fits in the line.
+            let ((s0, w), s1) = take_width(cow, self.remaining());
+            cow = s1;
+
+            self.curr_spans.push(Span::styled(s0, style));
+            self.curr_width += w;
+
+            self.commit();
+        }
+
+        if self.curr_width == self.width {
+            // If the last bit fills the full line, start a new one.
+            self.push();
+        }
+    }
+
+    pub fn push_line(&mut self, spans: Spans<'a>) {
+        self.commit();
+        self.text.lines.push(spans);
+    }
+
+    pub fn push_text(&mut self, text: Text<'a>) {
+        self.commit();
+        self.text.lines.extend(text.lines);
+    }
+
+    pub fn finish(mut self) -> Text<'a> {
+        self.commit();
+        self.text
+    }
+}

src/tests.rs

@@ -15,13 +15,15 @@ use matrix_sdk::ruma::{
 };
 
 use lazy_static::lazy_static;
-use modalkit::tui::style::Color;
+use modalkit::tui::style::{Color, Style};
 use tokio::sync::mpsc::unbounded_channel;
 use url::Url;
 
 use crate::{
-    base::{ChatStore, ProgramStore, RoomFetchStatus, RoomInfo},
+    base::{ChatStore, EventLocation, ProgramStore, RoomFetchStatus, RoomInfo},
     config::{
+        user_color,
+        user_style_from_color,
         ApplicationSettings,
         DirectoryValues,
         ProfileConfig,
@@ -60,6 +62,10 @@ lazy_static! {
     pub static ref MSG5_KEY: MessageKey = (OriginServer(UInt::new(8).unwrap()), MSG5_EVID.clone());
 }
 
+pub fn user_style(user: &str) -> Style {
+    user_style_from_color(user_color(user))
+}
+
 pub fn mock_room1_message(
     content: RoomMessageEventContent,
     sender: OwnedUserId,
@@ -82,7 +88,7 @@ pub fn mock_room1_message(
 
 pub fn mock_message1() -> Message {
     let content = RoomMessageEventContent::text_plain("writhe");
-    let content = MessageEvent::Local(content.into());
+    let content = MessageEvent::Local(MSG1_EVID.clone(), content.into());
 
     Message::new(content, TEST_USER1.clone(), MSG1_KEY.0)
 }
@@ -111,6 +117,18 @@ pub fn mock_message5() -> Message {
     mock_room1_message(content, TEST_USER2.clone(), MSG4_KEY.clone())
 }
 
+pub fn mock_keys() -> HashMap<OwnedEventId, EventLocation> {
+    let mut keys = HashMap::new();
+
+    keys.insert(MSG1_EVID.clone(), EventLocation::Message(MSG1_KEY.clone()));
+    keys.insert(MSG2_EVID.clone(), EventLocation::Message(MSG2_KEY.clone()));
+    keys.insert(MSG3_EVID.clone(), EventLocation::Message(MSG3_KEY.clone()));
+    keys.insert(MSG4_EVID.clone(), EventLocation::Message(MSG4_KEY.clone()));
+    keys.insert(MSG5_EVID.clone(), EventLocation::Message(MSG5_KEY.clone()));
+
+    keys
+}
+
 pub fn mock_messages() -> Messages {
     let mut messages = BTreeMap::new();
 
@@ -126,7 +144,15 @@ pub fn mock_messages() -> Messages {
 pub fn mock_room() -> RoomInfo {
     RoomInfo {
         name: Some("Watercooler Discussion".into()),
+        tags: None,
+
+        keys: mock_keys(),
         messages: mock_messages(),
+
+        receipts: HashMap::new(),
+        read_till: None,
+        reactions: HashMap::new(),
+
         fetch_id: RoomFetchStatus::NotStarted,
         fetch_last: None,
         users_typing: None,
@@ -143,7 +169,12 @@ pub fn mock_dirs() -> DirectoryValues {
 
 pub fn mock_tunables() -> TunableValues {
     TunableValues {
-        typing_notice: true,
+        default_room: None,
+        reaction_display: true,
+        reaction_shortcode_display: false,
+        read_receipt_send: true,
+        read_receipt_display: true,
+        typing_notice_send: true,
         typing_notice_display: true,
         users: vec![(TEST_USER5.clone(), UserDisplayTunables {
             color: Some(UserColor(Color::Black)),

src/util.rs

@@ -0,0 +1,191 @@
+use std::borrow::Cow;
+
+use unicode_segmentation::UnicodeSegmentation;
+use unicode_width::UnicodeWidthStr;
+
+use modalkit::tui::style::Style;
+use modalkit::tui::text::{Span, Spans, Text};
+
+pub fn split_cow(cow: Cow<'_, str>, idx: usize) -> (Cow<'_, str>, Cow<'_, str>) {
+    match cow {
+        Cow::Borrowed(s) => {
+            let s1 = Cow::Borrowed(&s[idx..]);
+            let s0 = Cow::Borrowed(&s[..idx]);
+
+            (s0, s1)
+        },
+        Cow::Owned(mut s) => {
+            let s1 = Cow::Owned(s.split_off(idx));
+            let s0 = Cow::Owned(s);
+
+            (s0, s1)
+        },
+    }
+}
+
+pub fn take_width(s: Cow<'_, str>, width: usize) -> ((Cow<'_, str>, usize), Cow<'_, str>) {
+    // Find where to split the line.
+    let mut idx = 0;
+    let mut w = 0;
+
+    for (i, g) in UnicodeSegmentation::grapheme_indices(s.as_ref(), true) {
+        let gw = UnicodeWidthStr::width(g);
+        idx = i;
+
+        if w + gw > width {
+            break;
+        }
+
+        w += gw;
+    }
+
+    let (s0, s1) = split_cow(s, idx);
+
+    ((s0, w), s1)
+}
+
+pub struct WrappedLinesIterator<'a> {
+    iter: std::vec::IntoIter<Cow<'a, str>>,
+    curr: Option<Cow<'a, str>>,
+    width: usize,
+}
+
+impl<'a> WrappedLinesIterator<'a> {
+    fn new<T>(input: T, width: usize) -> Self
+    where
+        T: Into<Cow<'a, str>>,
+    {
+        let width = width.max(2);
+
+        let cows: Vec<Cow<'a, str>> = match input.into() {
+            Cow::Borrowed(s) => s.lines().map(Cow::Borrowed).collect(),
+            Cow::Owned(s) => s.lines().map(ToOwned::to_owned).map(Cow::Owned).collect(),
+        };
+
+        WrappedLinesIterator { iter: cows.into_iter(), curr: None, width }
+    }
+}
+
+impl<'a> Iterator for WrappedLinesIterator<'a> {
+    type Item = (Cow<'a, str>, usize);
+
+    fn next(&mut self) -> Option<Self::Item> {
+        if self.curr.is_none() {
+            self.curr = self.iter.next();
+        }
+
+        if let Some(s) = self.curr.take() {
+            let width = UnicodeWidthStr::width(s.as_ref());
+
+            if width <= self.width {
+                return Some((s, width));
+            } else {
+                let (prefix, s1) = take_width(s, self.width);
+                self.curr = Some(s1);
+                return Some(prefix);
+            }
+        } else {
+            return None;
+        }
+    }
+}
+
+pub fn wrap<'a, T>(input: T, width: usize) -> WrappedLinesIterator<'a>
+where
+    T: Into<Cow<'a, str>>,
+{
+    WrappedLinesIterator::new(input, width)
+}
+
+pub fn wrapped_text<'a, T>(s: T, width: usize, style: Style) -> Text<'a>
+where
+    T: Into<Cow<'a, str>>,
+{
+    let mut text = Text::default();
+
+    for (line, w) in wrap(s, width) {
+        let space = space_span(width.saturating_sub(w), style);
+        let spans = Spans(vec![Span::styled(line, style), space]);
+
+        text.lines.push(spans);
+    }
+
+    return text;
+}
+
+pub fn space(width: usize) -> String {
+    " ".repeat(width)
+}
+
+pub fn space_span(width: usize, style: Style) -> Span<'static> {
+    Span::styled(space(width), style)
+}
+
+pub fn space_text(width: usize, style: Style) -> Text<'static> {
+    space_span(width, style).into()
+}
+
+pub fn join_cell_text<'a>(texts: Vec<(Text<'a>, usize)>, join: Span<'a>, style: Style) -> Text<'a> {
+    let height = texts.iter().map(|t| t.0.height()).max().unwrap_or(0);
+    let mut text = Text { lines: vec![Spans(vec![join.clone()]); height] };
+
+    for (mut t, w) in texts.into_iter() {
+        for i in 0..height {
+            if let Some(spans) = t.lines.get_mut(i) {
+                text.lines[i].0.append(&mut spans.0);
+            } else {
+                text.lines[i].0.push(space_span(w, style));
+            }
+
+            text.lines[i].0.push(join.clone());
+        }
+    }
+
+    text
+}
+
+#[cfg(test)]
+pub mod tests {
+    use super::*;
+
+    #[test]
+    fn test_wrapped_lines_ascii() {
+        let s = "hello world!\nabcdefghijklmnopqrstuvwxyz\ngoodbye";
+
+        let mut iter = wrap(s, 100);
+        assert_eq!(iter.next(), Some((Cow::Borrowed("hello world!"), 12)));
+        assert_eq!(iter.next(), Some((Cow::Borrowed("abcdefghijklmnopqrstuvwxyz"), 26)));
+        assert_eq!(iter.next(), Some((Cow::Borrowed("goodbye"), 7)));
+        assert_eq!(iter.next(), None);
+
+        let mut iter = wrap(s, 5);
+        assert_eq!(iter.next(), Some((Cow::Borrowed("hello"), 5)));
+        assert_eq!(iter.next(), Some((Cow::Borrowed(" worl"), 5)));
+        assert_eq!(iter.next(), Some((Cow::Borrowed("d!"), 2)));
+        assert_eq!(iter.next(), Some((Cow::Borrowed("abcde"), 5)));
+        assert_eq!(iter.next(), Some((Cow::Borrowed("fghij"), 5)));
+        assert_eq!(iter.next(), Some((Cow::Borrowed("klmno"), 5)));
+        assert_eq!(iter.next(), Some((Cow::Borrowed("pqrst"), 5)));
+        assert_eq!(iter.next(), Some((Cow::Borrowed("uvwxy"), 5)));
+        assert_eq!(iter.next(), Some((Cow::Borrowed("z"), 1)));
+        assert_eq!(iter.next(), Some((Cow::Borrowed("goodb"), 5)));
+        assert_eq!(iter.next(), Some((Cow::Borrowed("ye"), 2)));
+        assert_eq!(iter.next(), None);
+    }
+
+    #[test]
+    fn test_wrapped_lines_unicode() {
+        let s = "ＣＨＩＣＫＥＮ";
+
+        let mut iter = wrap(s, 14);
+        assert_eq!(iter.next(), Some((Cow::Borrowed(s), 14)));
+        assert_eq!(iter.next(), None);
+
+        let mut iter = wrap(s, 5);
+        assert_eq!(iter.next(), Some((Cow::Borrowed("ＣＨ"), 4)));
+        assert_eq!(iter.next(), Some((Cow::Borrowed("ＩＣ"), 4)));
+        assert_eq!(iter.next(), Some((Cow::Borrowed("ＫＥ"), 4)));
+        assert_eq!(iter.next(), Some((Cow::Borrowed("Ｎ"), 2)));
+        assert_eq!(iter.next(), None);
+    }
+}

src/windows/mod.rs

@@ -4,7 +4,12 @@ use std::collections::hash_map::Entry;
 use matrix_sdk::{
     encryption::verification::{format_emojis, SasVerification},
     room::{Room as MatrixRoom, RoomMember},
-    ruma::{events::room::member::MembershipState, OwnedRoomId, RoomId},
+    ruma::{
+        events::room::member::MembershipState,
+        events::tag::{TagName, Tags},
+        OwnedRoomId,
+        RoomId,
+    },
     DisplayName,
 };
 
@@ -119,6 +124,57 @@ fn room_cmp(a: &MatrixRoom, b: &MatrixRoom) -> Ordering {
     ord.then_with(|| a.room_id().cmp(b.room_id()))
 }
 
+fn tag_cmp(a: &Option<Tags>, b: &Option<Tags>) -> Ordering {
+    let (fava, lowa) = a
+        .as_ref()
+        .map(|tags| {
+            (tags.contains_key(&TagName::Favorite), tags.contains_key(&TagName::LowPriority))
+        })
+        .unwrap_or((false, false));
+
+    let (favb, lowb) = b
+        .as_ref()
+        .map(|tags| {
+            (tags.contains_key(&TagName::Favorite), tags.contains_key(&TagName::LowPriority))
+        })
+        .unwrap_or((false, false));
+
+    // If a has Favorite and b doesn't, it should sort earlier in room list.
+    let cmpf = favb.cmp(&fava);
+
+    // If a has LowPriority and b doesn't, it should sort later in room list.
+    let cmpl = lowa.cmp(&lowb);
+
+    cmpl.then(cmpf)
+}
+
+fn append_tags<'a>(tags: &'a Tags, spans: &mut Vec<Span<'a>>, style: Style) {
+    if tags.is_empty() {
+        return;
+    }
+
+    spans.push(Span::styled(" (", style));
+
+    for (i, tag) in tags.keys().enumerate() {
+        if i > 0 {
+            spans.push(Span::styled(", ", style));
+        }
+
+        match tag {
+            TagName::Favorite => spans.push(Span::styled("Favorite", style)),
+            TagName::LowPriority => spans.push(Span::styled("Low Priority", style)),
+            TagName::ServerNotice => spans.push(Span::styled("Server Notice", style)),
+            TagName::User(tag) => {
+                spans.push(Span::styled("User Tag: ", style));
+                spans.push(Span::styled(tag.as_ref(), style));
+            },
+            tag => spans.push(Span::styled(format!("{tag:?}"), style)),
+        }
+    }
+
+    spans.push(Span::styled(")", style));
+}
+
 #[inline]
 fn room_prompt(
     room_id: &RoomId,
@@ -321,8 +377,13 @@ impl WindowOps<IambInfo> for IambWindow {
             IambWindow::Room(state) => state.draw(area, buf, focused, store),
             IambWindow::DirectList(state) => {
                 let dms = store.application.worker.direct_messages();
-                let items = dms.into_iter().map(|(id, name)| DirectItem::new(id, name, store));
-                state.set(items.collect());
+                let mut items = dms
+                    .into_iter()
+                    .map(|(id, name, tags)| DirectItem::new(id, name, tags, store))
+                    .collect::<Vec<_>>();
+                items.sort();
+
+                state.set(items);
 
                 List::new(store)
                     .empty_message("No direct messages yet!")
@@ -346,7 +407,7 @@ impl WindowOps<IambInfo> for IambWindow {
                 let joined = store.application.worker.active_rooms();
                 let mut items = joined
                     .into_iter()
-                    .map(|(room, name)| RoomItem::new(room, name, store))
+                    .map(|(room, name, tags)| RoomItem::new(room, name, tags, store))
                     .collect::<Vec<_>>();
                 items.sort();
 
@@ -471,8 +532,8 @@ impl Window<IambInfo> for IambWindow {
     fn open(id: IambId, store: &mut ProgramStore) -> IambResult<Self> {
         match id {
             IambId::Room(room_id) => {
-                let (room, name) = store.application.worker.get_room(room_id)?;
-                let room = RoomState::new(room, name, store);
+                let (room, name, tags) = store.application.worker.get_room(room_id)?;
+                let room = RoomState::new(room, name, tags, store);
 
                 return Ok(room.into());
             },
@@ -519,8 +580,8 @@ impl Window<IambInfo> for IambWindow {
                 let room_id = worker.join_room(v.key().to_string())?;
                 v.insert(room_id.clone());
 
-                let (room, name) = store.application.worker.get_room(room_id)?;
-                let room = RoomState::new(room, name, store);
+                let (room, name, tags) = store.application.worker.get_room(room_id)?;
+                let room = RoomState::new(room, name, tags, store);
 
                 Ok(room.into())
             },
@@ -533,7 +594,7 @@ impl Window<IambInfo> for IambWindow {
     }
 
     fn posn(index: usize, _: &mut ProgramStore) -> IambResult<Self> {
-        let msg = format!("Cannot find indexed buffer (index = {})", index);
+        let msg = format!("Cannot find indexed buffer (index = {index})");
         let err = UIError::Unimplemented(msg);
 
         Err(err)
@@ -547,16 +608,24 @@ impl Window<IambInfo> for IambWindow {
 #[derive(Clone)]
 pub struct RoomItem {
     room: MatrixRoom,
+    tags: Option<Tags>,
     name: String,
 }
 
 impl RoomItem {
-    fn new(room: MatrixRoom, name: DisplayName, store: &mut ProgramStore) -> Self {
+    fn new(
+        room: MatrixRoom,
+        name: DisplayName,
+        tags: Option<Tags>,
+        store: &mut ProgramStore,
+    ) -> Self {
         let name = name.to_string();
 
-        store.application.set_room_name(room.room_id(), name.as_str());
+        let info = store.application.get_room_info(room.room_id().to_owned());
+        info.name = name.clone().into();
+        info.tags = tags.clone();
 
-        RoomItem { room, name }
+        RoomItem { room, tags, name }
     }
 }
 
@@ -570,7 +639,7 @@ impl Eq for RoomItem {}
 
 impl Ord for RoomItem {
     fn cmp(&self, other: &Self) -> Ordering {
-        room_cmp(&self.room, &other.room)
+        tag_cmp(&self.tags, &other.tags).then_with(|| room_cmp(&self.room, &other.room))
     }
 }
 
@@ -588,7 +657,16 @@ impl ToString for RoomItem {
 
 impl ListItem<IambInfo> for RoomItem {
     fn show(&self, selected: bool, _: &ViewportContext<ListCursor>, _: &mut ProgramStore) -> Text {
-        selected_text(self.name.as_str(), selected)
+        if let Some(tags) = &self.tags {
+            let style = selected_style(selected);
+            let mut spans = vec![Span::styled(self.name.as_str(), style)];
+
+            append_tags(tags, &mut spans, style);
+
+            Text::from(Spans(spans))
+        } else {
+            selected_text(self.name.as_str(), selected)
+        }
     }
 
     fn get_word(&self) -> Option<String> {
@@ -610,16 +688,22 @@ impl Promptable<ProgramContext, ProgramStore, IambInfo> for RoomItem {
 #[derive(Clone)]
 pub struct DirectItem {
     room: MatrixRoom,
+    tags: Option<Tags>,
     name: String,
 }
 
 impl DirectItem {
-    fn new(room: MatrixRoom, name: DisplayName, store: &mut ProgramStore) -> Self {
+    fn new(
+        room: MatrixRoom,
+        name: DisplayName,
+        tags: Option<Tags>,
+        store: &mut ProgramStore,
+    ) -> Self {
         let name = name.to_string();
 
         store.application.set_room_name(room.room_id(), name.as_str());
 
-        DirectItem { room, name }
+        DirectItem { room, tags, name }
     }
 }
 
@@ -631,7 +715,16 @@ impl ToString for DirectItem {
 
 impl ListItem<IambInfo> for DirectItem {
     fn show(&self, selected: bool, _: &ViewportContext<ListCursor>, _: &mut ProgramStore) -> Text {
-        selected_text(self.name.as_str(), selected)
+        if let Some(tags) = &self.tags {
+            let style = selected_style(selected);
+            let mut spans = vec![Span::styled(self.name.as_str(), style)];
+
+            append_tags(tags, &mut spans, style);
+
+            Text::from(Spans(spans))
+        } else {
+            selected_text(self.name.as_str(), selected)
+        }
     }
 
     fn get_word(&self) -> Option<String> {
@@ -639,6 +732,26 @@ impl ListItem<IambInfo> for DirectItem {
     }
 }
 
+impl PartialEq for DirectItem {
+    fn eq(&self, other: &Self) -> bool {
+        self.room.room_id() == other.room.room_id()
+    }
+}
+
+impl Eq for DirectItem {}
+
+impl Ord for DirectItem {
+    fn cmp(&self, other: &Self) -> Ordering {
+        tag_cmp(&self.tags, &other.tags).then_with(|| room_cmp(&self.room, &other.room))
+    }
+}
+
+impl PartialOrd for DirectItem {
+    fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
+        self.cmp(other).into()
+    }
+}
+
 impl Promptable<ProgramContext, ProgramStore, IambInfo> for DirectItem {
     fn prompt(
         &mut self,
@@ -739,7 +852,7 @@ impl VerifyItem {
             let device = self.sasv1.other_device();
 
             if let Some(display_name) = device.display_name() {
-                format!("Device verification with {} ({})", display_name, state)
+                format!("Device verification with {display_name} ({state})")
             } else {
                 format!("Device verification with device {} ({})", device.device_id(), state)
             }
@@ -845,7 +958,7 @@ impl ListItem<IambInfo> for VerifyItem {
             lines.push(Spans::from(""));
 
             for line in format_emojis(emoji).lines() {
-                lines.push(Spans::from(format!("    {}", line)));
+                lines.push(Spans::from(format!("    {line}")));
             }
 
             lines.push(Spans::from(""));

src/windows/room/chat.rs

@@ -1,19 +1,26 @@
 use std::borrow::Cow;
 use std::ffi::OsStr;
 use std::fs;
+use std::ops::Deref;
 use std::path::{Path, PathBuf};
 
+use tokio;
+
 use matrix_sdk::{
     attachment::AttachmentConfig,
     media::{MediaFormat, MediaRequest},
-    room::Room as MatrixRoom,
+    room::{Joined, Room as MatrixRoom},
     ruma::{
+        events::reaction::{ReactionEventContent, Relation as Reaction},
         events::room::message::{
             MessageType,
             OriginalRoomMessageEvent,
+            Relation,
+            Replacement,
             RoomMessageEventContent,
             TextMessageEventContent,
         },
+        EventId,
         OwnedRoomId,
         RoomId,
     },
@@ -52,6 +59,7 @@ use modalkit::editing::{
 };
 
 use crate::base::{
+    DownloadFlags,
     IambAction,
     IambBufferId,
     IambError,
@@ -67,6 +75,7 @@ use crate::base::{
 };
 
 use crate::message::{Message, MessageEvent, MessageKey, MessageTimeStamp};
+use crate::worker::Requester;
 
 use super::scrollback::{Scrollback, ScrollbackState};
 
@@ -82,6 +91,7 @@ pub struct ChatState {
     focus: RoomFocus,
 
     reply_to: Option<MessageKey>,
+    editing: Option<MessageKey>,
 }
 
 impl ChatState {
@@ -104,9 +114,14 @@ impl ChatState {
             focus: RoomFocus::MessageBar,
 
             reply_to: None,
+            editing: None,
         }
     }
 
+    fn get_joined(&self, worker: &Requester) -> Result<Joined, IambError> {
+        worker.client.get_joined_room(self.id()).ok_or(IambError::NotJoined)
+    }
+
     fn get_reply_to<'a>(&self, info: &'a RoomInfo) -> Option<&'a OriginalRoomMessageEvent> {
         let key = self.reply_to.as_ref()?;
         let msg = info.messages.get(key)?;
@@ -120,6 +135,7 @@ impl ChatState {
 
     fn reset(&mut self) -> EditRope {
         self.reply_to = None;
+        self.editing = None;
         self.tbox.reset()
     }
 
@@ -140,15 +156,19 @@ impl ChatState {
         let settings = &store.application.settings;
         let info = store.application.rooms.entry(self.room_id.clone()).or_default();
 
-        let msg = self.scrollback.get_mut(info).ok_or(IambError::NoSelectedMessage)?;
+        let msg = self
+            .scrollback
+            .get_mut(&mut info.messages)
+            .ok_or(IambError::NoSelectedMessage)?;
 
         match act {
             MessageAction::Cancel => {
                 self.reply_to = None;
+                self.editing = None;
 
                 Ok(None)
             },
-            MessageAction::Download(filename, force) => {
+            MessageAction::Download(filename, flags) => {
                 if let MessageEvent::Original(ev) = &msg.event {
                     let media = client.media();
 
@@ -195,9 +215,18 @@ impl ChatState {
                         },
                     };
 
-                    if !force && filename.exists() {
+                    if !filename.exists() || flags.contains(DownloadFlags::FORCE) {
+                        let req = MediaRequest { source, format: MediaFormat::File };
+
+                        let bytes =
+                            media.get_media_content(&req, true).await.map_err(IambError::from)?;
+
+                        fs::write(filename.as_path(), bytes.as_slice())?;
+
+                        msg.downloaded = true;
+                    } else if !flags.contains(DownloadFlags::OPEN) {
                         let msg = format!(
-                            "The file {} already exists; use :download! to overwrite it.",
+                            "The file {} already exists; add ! to end of command to overwrite it.",
                             filename.display()
                         );
                         let err = UIError::Failure(msg);
@@ -205,40 +234,88 @@ impl ChatState {
                         return Err(err);
                     }
 
-                    let req = MediaRequest { source, format: MediaFormat::File };
+                    let info = if flags.contains(DownloadFlags::OPEN) {
+                        // open::that may not return until the spawned program closes.
+                        let target = filename.clone().into_os_string();
+                        tokio::task::spawn_blocking(move || open::that(target));
 
-                    let bytes =
-                        media.get_media_content(&req, true).await.map_err(IambError::from)?;
-
-                    fs::write(filename.as_path(), bytes.as_slice())?;
-
-                    msg.downloaded = true;
-
-                    let info = InfoMessage::from(format!(
-                        "Attachment downloaded to {}",
-                        filename.display()
-                    ));
+                        InfoMessage::from(format!(
+                            "Attachment downloaded to {} and opened",
+                            filename.display()
+                        ))
+                    } else {
+                        InfoMessage::from(format!(
+                            "Attachment downloaded to {}",
+                            filename.display()
+                        ))
+                    };
 
                     return Ok(info.into());
                 }
 
                 Err(IambError::NoAttachment.into())
             },
-            MessageAction::Redact(reason) => {
-                let room = store
-                    .application
-                    .worker
-                    .client
-                    .get_joined_room(self.id())
-                    .ok_or(IambError::NotJoined)?;
+            MessageAction::Edit => {
+                if msg.sender != settings.profile.user_id {
+                    let msg = "Cannot edit messages sent by someone else";
+                    let err = UIError::Failure(msg.into());
 
+                    return Err(err);
+                }
+
+                let ev = match &msg.event {
+                    MessageEvent::Original(ev) => &ev.content,
+                    MessageEvent::Local(_, ev) => ev.deref(),
+                    _ => {
+                        let msg = "Cannot edit a redacted message";
+                        let err = UIError::Failure(msg.into());
+
+                        return Err(err);
+                    },
+                };
+
+                let text = match &ev.msgtype {
+                    MessageType::Text(msg) => msg.body.as_str(),
+                    _ => {
+                        let msg = "Cannot edit a non-text message";
+                        let err = UIError::Failure(msg.into());
+
+                        return Err(err);
+                    },
+                };
+
+                self.tbox.set_text(text);
+                self.editing = self.scrollback.get_key(info);
+                self.focus = RoomFocus::MessageBar;
+
+                Ok(None)
+            },
+            MessageAction::React(emoji) => {
+                let room = self.get_joined(&store.application.worker)?;
                 let event_id = match &msg.event {
                     MessageEvent::Original(ev) => ev.event_id.clone(),
-                    MessageEvent::Local(_) => {
-                        self.scrollback.get_key(info).ok_or(IambError::NoSelectedMessage)?.1
-                    },
+                    MessageEvent::Local(event_id, _) => event_id.clone(),
                     MessageEvent::Redacted(_) => {
-                        let msg = "";
+                        let msg = "Cannot react to a redacted message";
+                        let err = UIError::Failure(msg.into());
+
+                        return Err(err);
+                    },
+                };
+
+                let reaction = Reaction::new(event_id, emoji);
+                let msg = ReactionEventContent::new(reaction);
+                let _ = room.send(msg, None).await.map_err(IambError::from)?;
+
+                Ok(None)
+            },
+            MessageAction::Redact(reason) => {
+                let room = self.get_joined(&store.application.worker)?;
+                let event_id = match &msg.event {
+                    MessageEvent::Original(ev) => ev.event_id.clone(),
+                    MessageEvent::Local(event_id, _) => event_id.clone(),
+                    MessageEvent::Redacted(_) => {
+                        let msg = "Cannot redact already redacted message";
                         let err = UIError::Failure(msg.into());
 
                         return Err(err);
@@ -255,6 +332,46 @@ impl ChatState {
                 self.reply_to = self.scrollback.get_key(info);
                 self.focus = RoomFocus::MessageBar;
 
+                Ok(None)
+            },
+            MessageAction::Unreact(emoji) => {
+                let room = self.get_joined(&store.application.worker)?;
+                let event_id: &EventId = match &msg.event {
+                    MessageEvent::Original(ev) => ev.event_id.as_ref(),
+                    MessageEvent::Local(event_id, _) => event_id.as_ref(),
+                    MessageEvent::Redacted(_) => {
+                        let msg = "Cannot unreact to a redacted message";
+                        let err = UIError::Failure(msg.into());
+
+                        return Err(err);
+                    },
+                };
+
+                let reactions = match info.reactions.get(event_id) {
+                    Some(r) => r,
+                    None => return Ok(None),
+                };
+
+                let reactions = reactions.iter().filter_map(|(event_id, (reaction, user_id))| {
+                    if user_id != &settings.profile.user_id {
+                        return None;
+                    }
+
+                    if let Some(emoji) = &emoji {
+                        if emoji == reaction {
+                            return Some(event_id);
+                        } else {
+                            return None;
+                        }
+                    } else {
+                        return Some(event_id);
+                    }
+                });
+
+                for reaction in reactions {
+                    let _ = room.redact(reaction, None, None).await.map_err(IambError::from)?;
+                }
+
                 Ok(None)
             },
         }
@@ -273,6 +390,7 @@ impl ChatState {
             .get_joined_room(self.id())
             .ok_or(IambError::NotJoined)?;
         let info = store.application.rooms.entry(self.id().to_owned()).or_default();
+        let mut show_echo = true;
 
         let (event_id, msg) = match act {
             SendAction::Submit => {
@@ -282,12 +400,19 @@ impl ChatState {
                     return Ok(None);
                 }
 
-                let msg = TextMessageEventContent::plain(msg);
+                let msg = TextMessageEventContent::markdown(msg);
                 let msg = MessageType::Text(msg);
 
                 let mut msg = RoomMessageEventContent::new(msg);
 
-                if let Some(m) = self.get_reply_to(info) {
+                if let Some((_, event_id)) = &self.editing {
+                    msg.relates_to = Some(Relation::Replacement(Replacement::new(
+                        event_id.clone(),
+                        Box::new(msg.clone()),
+                    )));
+
+                    show_echo = false;
+                } else if let Some(m) = self.get_reply_to(info) {
                     // XXX: Switch to RoomMessageEventContent::reply() once it's stable?
                     msg = msg.make_reply_to(m);
                 }
@@ -319,7 +444,7 @@ impl ChatState {
                     .map_err(IambError::from)?;
 
                 // Mock up the local echo message for the scrollback.
-                let msg = TextMessageEventContent::plain(format!("[Attached File: {}]", name));
+                let msg = TextMessageEventContent::plain(format!("[Attached File: {name}]"));
                 let msg = MessageType::Text(msg);
                 let msg = RoomMessageEventContent::new(msg);
 
@@ -327,11 +452,13 @@ impl ChatState {
             },
         };
 
-        let user = store.application.settings.profile.user_id.clone();
-        let key = (MessageTimeStamp::LocalEcho, event_id);
-        let msg = MessageEvent::Local(msg.into());
-        let msg = Message::new(msg, user, MessageTimeStamp::LocalEcho);
-        info.messages.insert(key, msg);
+        if show_echo {
+            let user = store.application.settings.profile.user_id.clone();
+            let key = (MessageTimeStamp::LocalEcho, event_id.clone());
+            let msg = MessageEvent::Local(event_id, msg.into());
+            let msg = Message::new(msg, user, MessageTimeStamp::LocalEcho);
+            info.messages.insert(key, msg);
+        }
 
         // Jump to the end of the scrollback to show the message.
         self.scrollback.goto_latest();
@@ -364,7 +491,7 @@ impl ChatState {
             return;
         }
 
-        if !store.application.settings.tunables.typing_notice {
+        if !store.application.settings.tunables.typing_notice_send {
             return;
         }
 
@@ -413,6 +540,7 @@ impl WindowOps<IambInfo> for ChatState {
             focus: self.focus,
 
             reply_to: None,
+            editing: None,
         }
     }
 
@@ -601,14 +729,20 @@ impl<'a> StatefulWidget for Chat<'a> {
         let scrollback = Scrollback::new(self.store).focus(scrollback_focused);
         scrollback.render(scrollarea, buf, &mut state.scrollback);
 
-        let desc_spans = state.reply_to.as_ref().and_then(|k| {
-            let room = self.store.application.rooms.get(state.id())?;
-            let msg = room.messages.get(k)?;
-            let user = self.store.application.settings.get_user_span(msg.sender.as_ref());
-            let spans = Spans(vec![Span::from("Replying to "), user]);
+        let desc_spans = match (&state.editing, &state.reply_to) {
+            (None, None) => None,
+            (Some(_), _) => Some(Spans::from("Editing message")),
+            (_, Some(_)) => {
+                state.reply_to.as_ref().and_then(|k| {
+                    let room = self.store.application.rooms.get(state.id())?;
+                    let msg = room.messages.get(k)?;
+                    let user = self.store.application.settings.get_user_span(msg.sender.as_ref());
+                    let spans = Spans(vec![Span::from("Replying to "), user]);
 
-            spans.into()
-        });
+                    spans.into()
+                })
+            },
+        };
 
         if let Some(desc_spans) = desc_spans {
             Paragraph::new(desc_spans).render(descarea, buf);

src/windows/room/mod.rs

@@ -1,6 +1,12 @@
 use matrix_sdk::{
     room::{Invited, Room as MatrixRoom},
-    ruma::RoomId,
+    ruma::{
+        events::{
+            room::{name::RoomNameEventContent, topic::RoomTopicEventContent},
+            tag::{TagInfo, Tags},
+        },
+        RoomId,
+    },
     DisplayName,
 };
 
@@ -23,6 +29,7 @@ use modalkit::{
         PromptAction,
         Promptable,
         Scrollable,
+        UIError,
     },
     editing::base::{
         Axis,
@@ -48,6 +55,7 @@ use crate::base::{
     ProgramContext,
     ProgramStore,
     RoomAction,
+    RoomField,
     SendAction,
 };
 
@@ -85,10 +93,16 @@ impl From<SpaceState> for RoomState {
 }
 
 impl RoomState {
-    pub fn new(room: MatrixRoom, name: DisplayName, store: &mut ProgramStore) -> Self {
+    pub fn new(
+        room: MatrixRoom,
+        name: DisplayName,
+        tags: Option<Tags>,
+        store: &mut ProgramStore,
+    ) -> Self {
         let room_id = room.room_id().to_owned();
         let info = store.application.get_room_info(room_id);
         info.name = name.to_string().into();
+        info.tags = tags;
 
         if room.is_space() {
             SpaceState::new(room).into()
@@ -118,10 +132,7 @@ impl RoomState {
             None => format!("{:?}", store.application.get_room_title(self.id())),
         };
 
-        let mut invited = vec![Span::from(format!(
-            "You have been invited to join {}",
-            name
-        ))];
+        let mut invited = vec![Span::from(format!("You have been invited to join {name}"))];
 
         if let Ok(Some(inviter)) = &inviter {
             invited.push(Span::from(" by "));
@@ -207,8 +218,50 @@ impl RoomState {
 
                 Ok(vec![(act, cmd.context.take())])
             },
-            RoomAction::Set(field) => {
-                store.application.worker.set_room(self.id().to_owned(), field)?;
+            RoomAction::Set(field, value) => {
+                let room = store
+                    .application
+                    .get_joined_room(self.id())
+                    .ok_or(UIError::Application(IambError::NotJoined))?;
+
+                match field {
+                    RoomField::Name => {
+                        let ev = RoomNameEventContent::new(value.into());
+                        let _ = room.send_state_event(ev).await.map_err(IambError::from)?;
+                    },
+                    RoomField::Tag(tag) => {
+                        let mut info = TagInfo::new();
+                        info.order = Some(1.0);
+
+                        let _ = room.set_tag(tag, info).await.map_err(IambError::from)?;
+                    },
+                    RoomField::Topic => {
+                        let ev = RoomTopicEventContent::new(value);
+                        let _ = room.send_state_event(ev).await.map_err(IambError::from)?;
+                    },
+                }
+
+                Ok(vec![])
+            },
+            RoomAction::Unset(field) => {
+                let room = store
+                    .application
+                    .get_joined_room(self.id())
+                    .ok_or(UIError::Application(IambError::NotJoined))?;
+
+                match field {
+                    RoomField::Name => {
+                        let ev = RoomNameEventContent::new(None);
+                        let _ = room.send_state_event(ev).await.map_err(IambError::from)?;
+                    },
+                    RoomField::Tag(tag) => {
+                        let _ = room.remove_tag(tag).await.map_err(IambError::from)?;
+                    },
+                    RoomField::Topic => {
+                        let ev = RoomTopicEventContent::new("".into());
+                        let _ = room.send_state_event(ev).await.map_err(IambError::from)?;
+                    },
+                }
 
                 Ok(vec![])
             },

src/windows/room/scrollback.rs

@@ -62,7 +62,7 @@ use modalkit::editing::{
 use crate::{
     base::{IambBufferId, IambInfo, ProgramContext, ProgramStore, RoomFocus, RoomInfo},
     config::ApplicationSettings,
-    message::{Message, MessageCursor, MessageKey},
+    message::{Message, MessageCursor, MessageKey, Messages},
 };
 
 fn nth_key_before(pos: MessageKey, n: usize, info: &RoomInfo) -> MessageKey {
@@ -103,6 +103,10 @@ fn nth_after(pos: MessageKey, n: usize, info: &RoomInfo) -> MessageCursor {
     nth_key_after(pos, n, info).into()
 }
 
+fn prevmsg<'a>(key: &MessageKey, info: &'a RoomInfo) -> Option<&'a Message> {
+    info.messages.range(..key).next_back().map(|(_, v)| v)
+}
+
 pub struct ScrollbackState {
     /// The room identifier.
     room_id: OwnedRoomId,
@@ -160,11 +164,11 @@ impl ScrollbackState {
             .or_else(|| info.messages.last_key_value().map(|kv| kv.0.clone()))
     }
 
-    pub fn get_mut<'a>(&mut self, info: &'a mut RoomInfo) -> Option<&'a mut Message> {
+    pub fn get_mut<'a>(&mut self, messages: &'a mut Messages) -> Option<&'a mut Message> {
         if let Some(k) = &self.cursor.timestamp {
-            info.messages.get_mut(k)
+            messages.get_mut(k)
         } else {
-            info.messages.last_entry().map(|o| o.into_mut())
+            messages.last_entry().map(|o| o.into_mut())
         }
     }
 
@@ -214,7 +218,8 @@ impl ScrollbackState {
 
                 for (key, item) in info.messages.range(..=&idx).rev() {
                     let sel = selidx == key;
-                    let len = item.show(None, sel, &self.viewctx, settings).lines.len();
+                    let prev = prevmsg(key, info);
+                    let len = item.show(prev, sel, &self.viewctx, info, settings).lines.len();
 
                     if key == &idx {
                         lines += len / 2;
@@ -236,7 +241,8 @@ impl ScrollbackState {
 
                 for (key, item) in info.messages.range(..=&idx).rev() {
                     let sel = key == selidx;
-                    let len = item.show(None, sel, &self.viewctx, settings).lines.len();
+                    let prev = prevmsg(key, info);
+                    let len = item.show(prev, sel, &self.viewctx, info, settings).lines.len();
 
                     lines += len;
 
@@ -269,6 +275,7 @@ impl ScrollbackState {
         let mut lines = 0;
 
         let cursor_key = self.cursor.timestamp.as_ref().unwrap_or(last_key);
+        let mut prev = prevmsg(cursor_key, info);
 
         for (idx, item) in info.messages.range(corner_key.clone()..) {
             if idx == cursor_key {
@@ -276,13 +283,15 @@ impl ScrollbackState {
                 break;
             }
 
-            lines += item.show(None, false, &self.viewctx, settings).height().max(1);
+            lines += item.show(prev, false, &self.viewctx, info, settings).height().max(1);
 
             if lines >= self.viewctx.get_height() {
                 // We've reached the end of the viewport; move cursor into it.
                 self.cursor = idx.clone().into();
                 break;
             }
+
+            prev = Some(item);
         }
     }
 
@@ -431,7 +440,7 @@ impl ScrollbackState {
                 continue;
             }
 
-            if needle.is_match(msg.event.show().as_ref()) {
+            if needle.is_match(msg.event.body().as_ref()) {
                 mc = MessageCursor::from(key.clone()).into();
                 count -= 1;
             }
@@ -455,7 +464,7 @@ impl ScrollbackState {
                 break;
             }
 
-            if needle.is_match(msg.event.show().as_ref()) {
+            if needle.is_match(msg.event.body().as_ref()) {
                 mc = MessageCursor::from(key.clone()).into();
                 count -= 1;
             }
@@ -582,7 +591,7 @@ impl EditorActions<ProgramContext, ProgramStore, IambInfo> for ScrollbackState {
                         let needle = match ctx.get_search_regex() {
                             Some(re) => re,
                             None => {
-                                let lsearch = store.registers.get(&Register::LastSearch);
+                                let lsearch = store.registers.get(&Register::LastSearch)?;
                                 let lsearch = lsearch.value.to_string();
 
                                 Regex::new(lsearch.as_ref())?
@@ -606,7 +615,7 @@ impl EditorActions<ProgramContext, ProgramStore, IambInfo> for ScrollbackState {
                     },
 
                     _ => {
-                        let msg = format!("Unknown editing target: {:?}", motion);
+                        let msg = format!("Unknown editing target: {motion:?}");
                         let err = EditError::Unimplemented(msg);
 
                         return Err(err);
@@ -668,7 +677,7 @@ impl EditorActions<ProgramContext, ProgramStore, IambInfo> for ScrollbackState {
                         let needle = match ctx.get_search_regex() {
                             Some(re) => re,
                             None => {
-                                let lsearch = store.registers.get(&Register::LastSearch);
+                                let lsearch = store.registers.get(&Register::LastSearch)?;
                                 let lsearch = lsearch.value.to_string();
 
                                 Regex::new(lsearch.as_ref())?
@@ -693,7 +702,7 @@ impl EditorActions<ProgramContext, ProgramStore, IambInfo> for ScrollbackState {
                     },
 
                     _ => {
-                        let msg = format!("Unknown motion: {:?}", motion);
+                        let msg = format!("Unknown motion: {motion:?}");
                         let err = EditError::Unimplemented(msg);
 
                         return Err(err);
@@ -704,7 +713,7 @@ impl EditorActions<ProgramContext, ProgramStore, IambInfo> for ScrollbackState {
                     let mut yanked = EditRope::from("");
 
                     for (_, msg) in self.messages(range, info) {
-                        yanked += EditRope::from(msg.event.show().into_owned());
+                        yanked += EditRope::from(msg.event.body());
                         yanked += EditRope::from('\n');
                     }
 
@@ -716,7 +725,7 @@ impl EditorActions<ProgramContext, ProgramStore, IambInfo> for ScrollbackState {
                         flags |= RegisterPutFlags::APPEND;
                     }
 
-                    store.registers.put(&register, cell, flags);
+                    store.registers.put(&register, cell, flags)?;
                 }
 
                 return Ok(None);
@@ -724,7 +733,7 @@ impl EditorActions<ProgramContext, ProgramStore, IambInfo> for ScrollbackState {
 
             // Everything else is a modifying action.
             EditAction::ChangeCase(_) => Err(EditError::ReadOnly),
-            EditAction::ChangeNumber(_) => Err(EditError::ReadOnly),
+            EditAction::ChangeNumber(_, _) => Err(EditError::ReadOnly),
             EditAction::Delete => Err(EditError::ReadOnly),
             EditAction::Format => Err(EditError::ReadOnly),
             EditAction::Indent(_) => Err(EditError::ReadOnly),
@@ -781,7 +790,7 @@ impl EditorActions<ProgramContext, ProgramStore, IambInfo> for ScrollbackState {
             HistoryAction::Checkpoint => Ok(None),
             HistoryAction::Undo(_) => Err(EditError::Failure("Nothing to undo".into())),
             HistoryAction::Redo(_) => Err(EditError::Failure("Nothing to redo".into())),
-            _ => Err(EditError::Unimplemented(format!("Unknown action: {:?}", act))),
+            _ => Err(EditError::Unimplemented(format!("Unknown action: {act:?}"))),
         }
     }
 
@@ -838,7 +847,7 @@ impl EditorActions<ProgramContext, ProgramStore, IambInfo> for ScrollbackState {
 
                 Ok(None)
             },
-            _ => Err(EditError::Unimplemented(format!("Unknown action: {:?}", act))),
+            _ => Err(EditError::Unimplemented(format!("Unknown action: {act:?}"))),
         }
     }
 }
@@ -865,7 +874,7 @@ impl Editable<ProgramContext, ProgramStore, IambInfo> for ScrollbackState {
                 Err(err)
             },
 
-            _ => Err(EditError::Unimplemented(format!("Unknown action: {:?}", act))),
+            _ => Err(EditError::Unimplemented(format!("Unknown action: {act:?}"))),
         }
     }
 }
@@ -964,7 +973,7 @@ impl Promptable<ProgramContext, ProgramStore, IambInfo> for ScrollbackState {
                 return Err(err);
             },
             _ => {
-                let msg = format!("Messages scrollback doesn't support {:?}", act);
+                let msg = format!("Messages scrollback doesn't support {act:?}");
                 let err = EditError::Unimplemented(msg);
 
                 return Err(err);
@@ -1009,7 +1018,8 @@ impl ScrollActions<ProgramContext, ProgramStore, IambInfo> for ScrollbackState {
 
                 for (key, item) in info.messages.range(..=&corner_key).rev() {
                     let sel = key == cursor_key;
-                    let txt = item.show(None, sel, &self.viewctx, settings);
+                    let prev = prevmsg(key, info);
+                    let txt = item.show(prev, sel, &self.viewctx, info, settings);
                     let len = txt.height().max(1);
                     let max = len.saturating_sub(1);
 
@@ -1033,12 +1043,16 @@ impl ScrollActions<ProgramContext, ProgramStore, IambInfo> for ScrollbackState {
                 }
             },
             MoveDir2D::Down => {
+                let mut prev = prevmsg(&corner_key, info);
+
                 for (key, item) in info.messages.range(&corner_key..) {
                     let sel = key == cursor_key;
-                    let txt = item.show(None, sel, &self.viewctx, settings);
+                    let txt = item.show(prev, sel, &self.viewctx, info, settings);
                     let len = txt.height().max(1);
                     let max = len.saturating_sub(1);
 
+                    prev = Some(item);
+
                     if key != &corner_key {
                         corner.text_row = 0;
                     }
@@ -1214,11 +1228,11 @@ impl<'a> StatefulWidget for Scrollback<'a> {
         let full = std::mem::take(&mut state.show_full_on_redraw) || cursor.timestamp.is_none();
         let mut lines = vec![];
         let mut sawit = false;
-        let mut prev = None;
+        let mut prev = prevmsg(&corner_key, info);
 
         for (key, item) in info.messages.range(&corner_key..) {
             let sel = key == cursor_key;
-            let txt = item.show(prev, foc && sel, &state.viewctx, settings);
+            let txt = item.show(prev, foc && sel, &state.viewctx, info, settings);
 
             prev = Some(item);
 
@@ -1260,7 +1274,13 @@ impl<'a> StatefulWidget for Scrollback<'a> {
             y += 1;
         }
 
-        let first_key = info.messages.first_key_value().map(|f| f.0.clone());
+        if settings.tunables.read_receipt_send && state.cursor.timestamp.is_none() {
+            // If the cursor is at the last message, then update the read marker.
+            info.read_till = info.messages.last_key_value().map(|(k, _)| k.1.clone());
+        }
+
+        // Check whether we should load older messages for this room.
+        let first_key = info.messages.first_key_value().map(|(k, _)| k.clone());
         if first_key == state.viewctx.corner.timestamp {
             // If the top of the screen is the older message, load more.
             self.store.application.mark_for_load(state.room_id.clone());
@@ -1367,10 +1387,11 @@ mod tests {
         assert_eq!(scrollback.viewctx.dimensions, (0, 0));
         assert_eq!(scrollback.viewctx.corner, MessageCursor::latest());
 
-        // Set a terminal width of 60, and height of 3, rendering in scrollback as:
+        // Set a terminal width of 60, and height of 4, rendering in scrollback as:
         //
         //       |------------------------------------------------------------|
-        // MSG2: |           @user2:example.com  helium                       |
+        // MSG2: |                Wednesday, December 31 1969                 |
+        //       |           @user2:example.com  helium                       |
         // MSG3: |           @user2:example.com  this                         |
         //       |                               is                           |
         //       |                               a                            |
@@ -1378,14 +1399,15 @@ mod tests {
         //       |                               message                      |
         // MSG4: |           @user1:example.com  help                         |
         // MSG5: |           @user2:example.com  character                    |
-        // MSG1: |           @user1:example.com  writhe                       |
+        // MSG1: |                   XXXday, Month NN 20XX                    |
+        //       |           @user1:example.com  writhe                       |
         //       |------------------------------------------------------------|
-        let area = Rect::new(0, 0, 60, 3);
+        let area = Rect::new(0, 0, 60, 4);
         let mut buffer = Buffer::empty(area);
         scrollback.draw(area, &mut buffer, true, &mut store);
 
         assert_eq!(scrollback.cursor, MessageCursor::latest());
-        assert_eq!(scrollback.viewctx.dimensions, (60, 3));
+        assert_eq!(scrollback.viewctx.dimensions, (60, 4));
         assert_eq!(scrollback.viewctx.corner, MessageCursor::new(MSG4_KEY.clone(), 0));
 
         // Scroll up a line at a time until we hit the first message.
@@ -1414,6 +1436,11 @@ mod tests {
             .unwrap();
         assert_eq!(scrollback.viewctx.corner, MessageCursor::new(MSG3_KEY.clone(), 0));
 
+        scrollback
+            .dirscroll(prev, ScrollSize::Cell, &1.into(), &ctx, &mut store)
+            .unwrap();
+        assert_eq!(scrollback.viewctx.corner, MessageCursor::new(MSG2_KEY.clone(), 1));
+
         scrollback
             .dirscroll(prev, ScrollSize::Cell, &1.into(), &ctx, &mut store)
             .unwrap();
@@ -1426,6 +1453,11 @@ mod tests {
         assert_eq!(scrollback.viewctx.corner, MessageCursor::new(MSG2_KEY.clone(), 0));
 
         // Now scroll back down one line at a time.
+        scrollback
+            .dirscroll(next, ScrollSize::Cell, &1.into(), &ctx, &mut store)
+            .unwrap();
+        assert_eq!(scrollback.viewctx.corner, MessageCursor::new(MSG2_KEY.clone(), 1));
+
         scrollback
             .dirscroll(next, ScrollSize::Cell, &1.into(), &ctx, &mut store)
             .unwrap();
@@ -1466,19 +1498,24 @@ mod tests {
             .unwrap();
         assert_eq!(scrollback.viewctx.corner, MessageCursor::new(MSG1_KEY.clone(), 0));
 
+        scrollback
+            .dirscroll(next, ScrollSize::Cell, &1.into(), &ctx, &mut store)
+            .unwrap();
+        assert_eq!(scrollback.viewctx.corner, MessageCursor::new(MSG1_KEY.clone(), 1));
+
         // Cannot scroll down any further.
         scrollback
             .dirscroll(next, ScrollSize::Cell, &1.into(), &ctx, &mut store)
             .unwrap();
-        assert_eq!(scrollback.viewctx.corner, MessageCursor::new(MSG1_KEY.clone(), 0));
+        assert_eq!(scrollback.viewctx.corner, MessageCursor::new(MSG1_KEY.clone(), 1));
 
-        // Scroll up two Pages (six lines).
+        // Scroll up two Pages (eight lines).
         scrollback
             .dirscroll(prev, ScrollSize::Page, &2.into(), &ctx, &mut store)
             .unwrap();
-        assert_eq!(scrollback.viewctx.corner, MessageCursor::new(MSG3_KEY.clone(), 1));
+        assert_eq!(scrollback.viewctx.corner, MessageCursor::new(MSG3_KEY.clone(), 0));
 
-        // Scroll down two HalfPages (three lines).
+        // Scroll down two HalfPages (four lines).
         scrollback
             .dirscroll(next, ScrollSize::HalfPage, &2.into(), &ctx, &mut store)
             .unwrap();
@@ -1497,7 +1534,8 @@ mod tests {
         // Set a terminal width of 60, and height of 3, rendering in scrollback as:
         //
         //       |------------------------------------------------------------|
-        // MSG2: |           @user2:example.com  helium                       |
+        // MSG2: |                Wednesday, December 31 1969                 |
+        //       |           @user2:example.com  helium                       |
         // MSG3: |           @user2:example.com  this                         |
         //       |                               is                           |
         //       |                               a                            |
@@ -1505,7 +1543,8 @@ mod tests {
         //       |                               message                      |
         // MSG4: |           @user1:example.com  help                         |
         // MSG5: |           @user2:example.com  character                    |
-        // MSG1: |           @user1:example.com  writhe                       |
+        // MSG1: |                   XXXday, Month NN 20XX                    |
+        //       |           @user1:example.com  writhe                       |
         //       |------------------------------------------------------------|
         let area = Rect::new(0, 0, 60, 3);
         let mut buffer = Buffer::empty(area);

src/windows/room/space.rs

@@ -104,10 +104,10 @@ impl<'a> StatefulWidget for Space<'a> {
         let items = members
             .into_iter()
             .filter_map(|id| {
-                let (room, name) = self.store.application.worker.get_room(id.clone()).ok()?;
+                let (room, name, tags) = self.store.application.worker.get_room(id.clone()).ok()?;
 
                 if id != state.room_id {
-                    Some(RoomItem::new(room, name, self.store))
+                    Some(RoomItem::new(room, name, tags, self.store))
                 } else {
                     None
                 }

src/worker.rs

@@ -32,14 +32,14 @@ use matrix_sdk::{
                 start::{OriginalSyncKeyVerificationStartEvent, ToDeviceKeyVerificationStartEvent},
                 VerificationMethod,
             },
+            reaction::ReactionEventContent,
             room::{
                 message::{MessageType, RoomMessageEventContent},
                 name::RoomNameEventContent,
                 redaction::{OriginalSyncRoomRedactionEvent, SyncRoomRedactionEvent},
-                topic::RoomTopicEventContent,
             },
+            tag::Tags,
             typing::SyncTypingEvent,
-            AnyMessageLikeEvent,
             AnyTimelineEvent,
             SyncMessageLikeEvent,
             SyncStateEvent,
@@ -57,8 +57,8 @@ use matrix_sdk::{
 use modalkit::editing::action::{EditInfo, InfoMessage, UIError};
 
 use crate::{
-    base::{AsyncProgramStore, IambError, IambResult, SetRoomField, VerifyAction},
-    message::{Message, MessageFetchResult, MessageTimeStamp},
+    base::{AsyncProgramStore, EventLocation, IambError, IambResult, Receipts, VerifyAction},
+    message::MessageFetchResult,
     ApplicationSettings,
 };
 
@@ -99,19 +99,43 @@ fn oneshot<T>() -> (ClientReply<T>, ClientResponse<T>) {
     return (reply, response);
 }
 
+async fn update_receipts(client: &Client) -> Vec<(OwnedRoomId, Receipts)> {
+    let mut rooms = vec![];
+
+    for room in client.joined_rooms() {
+        if let Ok(users) = room.active_members_no_sync().await {
+            let mut receipts = Receipts::new();
+
+            for member in users {
+                let res = room.user_read_receipt(member.user_id()).await;
+
+                if let Ok(Some((event_id, _))) = res {
+                    let user_id = member.user_id().to_owned();
+                    receipts.entry(event_id).or_default().push(user_id);
+                }
+            }
+
+            rooms.push((room.room_id().to_owned(), receipts));
+        }
+    }
+
+    return rooms;
+}
+
+pub type FetchedRoom = (MatrixRoom, DisplayName, Option<Tags>);
+
 pub enum WorkerTask {
-    ActiveRooms(ClientReply<Vec<(MatrixRoom, DisplayName)>>),
-    DirectMessages(ClientReply<Vec<(MatrixRoom, DisplayName)>>),
+    ActiveRooms(ClientReply<Vec<FetchedRoom>>),
+    DirectMessages(ClientReply<Vec<FetchedRoom>>),
     Init(AsyncProgramStore, ClientReply<()>),
     LoadOlder(OwnedRoomId, Option<String>, u32, ClientReply<MessageFetchResult>),
     Login(LoginStyle, ClientReply<IambResult<EditInfo>>),
     GetInviter(Invited, ClientReply<IambResult<Option<RoomMember>>>),
-    GetRoom(OwnedRoomId, ClientReply<IambResult<(MatrixRoom, DisplayName)>>),
+    GetRoom(OwnedRoomId, ClientReply<IambResult<FetchedRoom>>),
     JoinRoom(String, ClientReply<IambResult<OwnedRoomId>>),
     Members(OwnedRoomId, ClientReply<IambResult<Vec<RoomMember>>>),
     SpaceMembers(OwnedRoomId, ClientReply<IambResult<Vec<OwnedRoomId>>>),
     Spaces(ClientReply<Vec<(MatrixRoom, DisplayName)>>),
-    SetRoom(OwnedRoomId, SetRoomField, ClientReply<IambResult<()>>),
     TypingNotice(OwnedRoomId),
     Verify(VerifyAction, SasVerification, ClientReply<IambResult<EditInfo>>),
     VerifyRequest(OwnedUserId, ClientReply<IambResult<EditInfo>>),
@@ -178,13 +202,6 @@ impl Debug for WorkerTask {
             WorkerTask::Spaces(_) => {
                 f.debug_tuple("WorkerTask::Spaces").field(&format_args!("_")).finish()
             },
-            WorkerTask::SetRoom(room_id, field, _) => {
-                f.debug_tuple("WorkerTask::SetRoom")
-                    .field(room_id)
-                    .field(field)
-                    .field(&format_args!("_"))
-                    .finish()
-            },
             WorkerTask::TypingNotice(room_id) => {
                 f.debug_tuple("WorkerTask::TypingNotice").field(room_id).finish()
             },
@@ -243,7 +260,7 @@ impl Requester {
         return response.recv();
     }
 
-    pub fn direct_messages(&self) -> Vec<(MatrixRoom, DisplayName)> {
+    pub fn direct_messages(&self) -> Vec<FetchedRoom> {
         let (reply, response) = oneshot();
 
         self.tx.send(WorkerTask::DirectMessages(reply)).unwrap();
@@ -259,7 +276,7 @@ impl Requester {
         return response.recv();
     }
 
-    pub fn get_room(&self, room_id: OwnedRoomId) -> IambResult<(MatrixRoom, DisplayName)> {
+    pub fn get_room(&self, room_id: OwnedRoomId) -> IambResult<FetchedRoom> {
         let (reply, response) = oneshot();
 
         self.tx.send(WorkerTask::GetRoom(room_id, reply)).unwrap();
@@ -275,7 +292,7 @@ impl Requester {
         return response.recv();
     }
 
-    pub fn active_rooms(&self) -> Vec<(MatrixRoom, DisplayName)> {
+    pub fn active_rooms(&self) -> Vec<FetchedRoom> {
         let (reply, response) = oneshot();
 
         self.tx.send(WorkerTask::ActiveRooms(reply)).unwrap();
@@ -299,14 +316,6 @@ impl Requester {
         return response.recv();
     }
 
-    pub fn set_room(&self, room_id: OwnedRoomId, ev: SetRoomField) -> IambResult<()> {
-        let (reply, response) = oneshot();
-
-        self.tx.send(WorkerTask::SetRoom(room_id, ev, reply)).unwrap();
-
-        return response.recv();
-    }
-
     pub fn spaces(&self) -> Vec<(MatrixRoom, DisplayName)> {
         let (reply, response) = oneshot();
 
@@ -341,6 +350,7 @@ pub struct ClientWorker {
     settings: ApplicationSettings,
     client: Client,
     sync_handle: Option<JoinHandle<()>>,
+    rcpt_handle: Option<JoinHandle<()>>,
 }
 
 impl ClientWorker {
@@ -379,9 +389,10 @@ impl ClientWorker {
             settings,
             client: client.clone(),
             sync_handle: None,
+            rcpt_handle: None,
         };
 
-        let _ = tokio::spawn(async move {
+        tokio::spawn(async move {
             worker.work(rx).await;
         });
 
@@ -403,6 +414,10 @@ impl ClientWorker {
         if let Some(handle) = self.sync_handle.take() {
             handle.abort();
         }
+
+        if let Some(handle) = self.rcpt_handle.take() {
+            handle.abort();
+        }
     }
 
     async fn run(&mut self, task: WorkerTask) {
@@ -444,10 +459,6 @@ impl ClientWorker {
                 assert!(self.initialized);
                 reply.send(self.members(room_id).await);
             },
-            WorkerTask::SetRoom(room_id, field, reply) => {
-                assert!(self.initialized);
-                reply.send(self.set_room(room_id, field).await);
-            },
             WorkerTask::SpaceMembers(space, reply) => {
                 assert!(self.initialized);
                 reply.send(self.space_members(space).await);
@@ -472,7 +483,7 @@ impl ClientWorker {
     }
 
     async fn init(&mut self, store: AsyncProgramStore) {
-        self.client.add_event_handler_context(store);
+        self.client.add_event_handler_context(store.clone());
 
         let _ = self.client.add_event_handler(
             |ev: SyncTypingEvent, room: MatrixRoom, store: Ctx<AsyncProgramStore>| {
@@ -536,15 +547,21 @@ impl ClientWorker {
                     let mut locked = store.lock().await;
                     let mut info = locked.application.get_room_info(room_id.to_owned());
                     info.name = room_name;
+                    info.insert(ev.into_full_event(room_id.to_owned()));
+                }
+            },
+        );
 
-                    let event_id = ev.event_id().to_owned();
-                    let key = (ev.origin_server_ts().into(), event_id.clone());
-                    let msg = Message::from(ev.into_full_event(room_id.to_owned()));
-                    info.messages.insert(key, msg);
+        let _ = self.client.add_event_handler(
+            |ev: SyncMessageLikeEvent<ReactionEventContent>,
+             room: MatrixRoom,
+             store: Ctx<AsyncProgramStore>| {
+                async move {
+                    let room_id = room.room_id();
 
-                    // Remove the echo.
-                    let key = (MessageTimeStamp::LocalEcho, event_id);
-                    let _ = info.messages.remove(&key);
+                    let mut locked = store.lock().await;
+                    let info = locked.application.get_room_info(room_id.to_owned());
+                    info.insert_reaction(ev.into_full_event(room_id.to_owned()));
                 }
             },
         );
@@ -561,17 +578,21 @@ impl ClientWorker {
                     let mut locked = store.lock().await;
                     let info = locked.application.get_room_info(room_id.to_owned());
 
-                    // XXX: need to store a mapping of EventId -> MessageKey somewhere
-                    // to avoid having to iterate over the messages here.
-                    for ((_, id), msg) in info.messages.iter_mut().rev() {
-                        if id != &ev.redacts {
-                            continue;
-                        }
+                    match info.keys.get(&ev.redacts) {
+                        None => return,
+                        Some(EventLocation::Message(key)) => {
+                            if let Some(msg) = info.messages.get_mut(key) {
+                                let ev = SyncRoomRedactionEvent::Original(ev);
+                                msg.event.redact(ev, room_version);
+                            }
+                        },
+                        Some(EventLocation::Reaction(event_id)) => {
+                            if let Some(reactions) = info.reactions.get_mut(event_id) {
+                                reactions.remove(&ev.redacts);
+                            }
 
-                        let ev = SyncRoomRedactionEvent::Original(ev);
-                        msg.event.redact(ev, room_version);
-
-                        break;
+                            info.keys.remove(&ev.redacts);
+                        },
                     }
                 }
             },
@@ -689,6 +710,21 @@ impl ClientWorker {
             },
         );
 
+        let client = self.client.clone();
+
+        self.rcpt_handle = tokio::spawn(async move {
+            // Update the displayed read receipts ever 5 seconds.
+            let mut interval = tokio::time::interval(Duration::from_secs(5));
+
+            loop {
+                interval.tick().await;
+
+                let receipts = update_receipts(&client).await;
+                store.lock().await.application.set_receipts(receipts).await;
+            }
+        })
+        .into();
+
         self.initialized = true;
     }
 
@@ -731,10 +767,10 @@ impl ClientWorker {
         Ok(Some(InfoMessage::from("Successfully logged in!")))
     }
 
-    async fn direct_message(&mut self, user: OwnedUserId) -> IambResult<(MatrixRoom, DisplayName)> {
-        for (room, name) in self.direct_messages().await {
+    async fn direct_message(&mut self, user: OwnedUserId) -> IambResult<FetchedRoom> {
+        for (room, name, tags) in self.direct_messages().await {
             if room.get_member(user.as_ref()).await.map_err(IambError::from)?.is_some() {
-                return Ok((room, name));
+                return Ok((room, name, tags));
             }
         }
 
@@ -754,7 +790,7 @@ impl ClientWorker {
                     "Failed to create direct message room"
                 );
 
-                let msg = format!("Could not open a room with {}", user);
+                let msg = format!("Could not open a room with {user}");
                 let err = UIError::Failure(msg);
 
                 Err(err)
@@ -768,11 +804,12 @@ impl ClientWorker {
         Ok(details.inviter)
     }
 
-    async fn get_room(&mut self, room_id: OwnedRoomId) -> IambResult<(MatrixRoom, DisplayName)> {
+    async fn get_room(&mut self, room_id: OwnedRoomId) -> IambResult<FetchedRoom> {
         if let Some(room) = self.client.get_room(&room_id) {
             let name = room.display_name().await.map_err(IambError::from)?;
+            let tags = room.tags().await.map_err(IambError::from)?;
 
-            Ok((room, name))
+            Ok((room, name, tags))
         } else {
             Err(IambError::UnknownRoom(room_id).into())
         }
@@ -801,7 +838,7 @@ impl ClientWorker {
         }
     }
 
-    async fn direct_messages(&self) -> Vec<(MatrixRoom, DisplayName)> {
+    async fn direct_messages(&self) -> Vec<FetchedRoom> {
         let mut rooms = vec![];
 
         for room in self.client.invited_rooms().into_iter() {
@@ -810,8 +847,9 @@ impl ClientWorker {
             }
 
             let name = room.display_name().await.unwrap_or(DisplayName::Empty);
+            let tags = room.tags().await.unwrap_or_default();
 
-            rooms.push((room.into(), name));
+            rooms.push((room.into(), name, tags));
         }
 
         for room in self.client.joined_rooms().into_iter() {
@@ -820,14 +858,15 @@ impl ClientWorker {
             }
 
             let name = room.display_name().await.unwrap_or(DisplayName::Empty);
+            let tags = room.tags().await.unwrap_or_default();
 
-            rooms.push((room.into(), name));
+            rooms.push((room.into(), name, tags));
         }
 
         return rooms;
     }
 
-    async fn active_rooms(&self) -> Vec<(MatrixRoom, DisplayName)> {
+    async fn active_rooms(&self) -> Vec<FetchedRoom> {
         let mut rooms = vec![];
 
         for room in self.client.invited_rooms().into_iter() {
@@ -836,8 +875,9 @@ impl ClientWorker {
             }
 
             let name = room.display_name().await.unwrap_or(DisplayName::Empty);
+            let tags = room.tags().await.unwrap_or_default();
 
-            rooms.push((room.into(), name));
+            rooms.push((room.into(), name, tags));
         }
 
         for room in self.client.joined_rooms().into_iter() {
@@ -846,8 +886,9 @@ impl ClientWorker {
             }
 
             let name = room.display_name().await.unwrap_or(DisplayName::Empty);
+            let tags = room.tags().await.unwrap_or_default();
 
-            rooms.push((room.into(), name));
+            rooms.push((room.into(), name, tags));
         }
 
         return rooms;
@@ -870,13 +911,7 @@ impl ClientWorker {
 
             let msgs = chunk.into_iter().filter_map(|ev| {
                 match ev.event.deserialize() {
-                    Ok(AnyTimelineEvent::MessageLike(msg)) => {
-                        if let AnyMessageLikeEvent::RoomMessage(msg) = msg {
-                            Some(msg)
-                        } else {
-                            None
-                        }
-                    },
+                    Ok(AnyTimelineEvent::MessageLike(msg)) => Some(msg),
                     Ok(AnyTimelineEvent::State(_)) => None,
                     Err(_) => None,
                 }
@@ -896,27 +931,6 @@ impl ClientWorker {
         }
     }
 
-    async fn set_room(&mut self, room_id: OwnedRoomId, field: SetRoomField) -> IambResult<()> {
-        let room = if let Some(r) = self.client.get_joined_room(&room_id) {
-            r
-        } else {
-            return Err(IambError::UnknownRoom(room_id).into());
-        };
-
-        match field {
-            SetRoomField::Name(name) => {
-                let ev = RoomNameEventContent::new(name.into());
-                let _ = room.send_state_event(ev).await.map_err(IambError::from)?;
-            },
-            SetRoomField::Topic(topic) => {
-                let ev = RoomTopicEventContent::new(topic);
-                let _ = room.send_state_event(ev).await.map_err(IambError::from)?;
-            },
-        }
-
-        Ok(())
-    }
-
     async fn space_members(&mut self, space: OwnedRoomId) -> IambResult<Vec<OwnedRoomId>> {
         let mut req = SpaceHierarchyRequest::new(&space);
         req.limit = Some(1000u32.into());
@@ -1015,12 +1029,12 @@ impl ClientWorker {
                 let methods = vec![VerificationMethod::SasV1];
                 let request = identity.request_verification_with_methods(methods);
                 let _req = request.await.map_err(IambError::from)?;
-                let info = format!("Sent verification request to {}", user_id);
+                let info = format!("Sent verification request to {user_id}");
 
                 Ok(InfoMessage::from(info).into())
             },
             None => {
-                let msg = format!("Could not find identity information for {}", user_id);
+                let msg = format!("Could not find identity information for {user_id}");
                 let err = UIError::Failure(msg);
 
                 Err(err)