fix: v0.10.3 no tmux right-click menus; close split panes

Right-clicking a pane opened tmux's menu, whose Split entries left a stray
pane next to Claude (and whose Kill entries could end it). Unbind the
right-click menus; add --unsplit and a palette entry that closes extra
panes and keeps Claude's. Closes #52

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WHRLCCdXYm41Qx5kNhehaP

README.md

@@ -71,7 +71,9 @@ The tmux server runs in its own unit, so every Claude process lives in **that**
 | Ctrl-b 0 / 1 | Claude window / shell window |
 | Ctrl-b s | Switch session (the URL follows) |
 | Ctrl-b d | Detach (the session keeps running) |
-| Shift+drag | Native browser selection (plain drag goes to tmux copy-mode, which copies via OSC 52) |
+| Drag | Selects text; it stays highlighted and is copied when you let go. Double-click selects a word, triple-click a line. Clicks on the tmux status line still go to tmux. |
+| Ctrl+C | Copies the selection when there is one; otherwise interrupts as usual |
+| Palette → Close split panes | Removes extra tmux panes (a stray `^b %` split) and keeps Claude. tmux's right-click menus are off. |
 | Ctrl+Shift+C / V | Copy selection / paste |
 | Ctrl+Shift+P | Command palette (also the ⌕ button) |
 | Ctrl+Shift+E | Files pane (Esc: back, then close) |

bin/devdesk

@@ -15,7 +15,7 @@
 #
 # The web UI calls `devdesk attach --list | --repo NAME | --alerts | --investigate SESSION UID |
 # --upload SESSION FILE BYTES | --new NAME [PROJECT] [--worktree] | --rename OLD NEW | --end NAME |
-# --last-reply NAME | --existing NAME`
+# --last-reply NAME | --unsplit NAME | --existing NAME`
 # through ttyd; those print JSON.
 set -euo pipefail
 
@@ -182,6 +182,25 @@ dd_worktree_end() {
     fi
 }
 
+# --unsplit NAME (devdesk#52): close the extra panes a split left in the session's
+# windows. Each window keeps one pane: Claude's in the claude window, else the
+# first. Prints {ok, closed}.
+cmd_unsplit() {
+    [ $# -eq 1 ] || dd_die "usage: devdesk attach --unsplit NAME"
+    dd_valid_name "$1" || dd_die "invalid session name: $1"
+    { dd_server_up && dd_tmux has-session -t "=$1" 2>/dev/null; } || dd_die "session '$1' isn't running"
+    local win keep pane closed=0
+    while read -r win; do
+        keep=$(dd_tmux list-panes -t "=$1:$win" -F '#{pane_id} #{pane_start_command}' | awk '/devdesk-claude-run/ { print $1; exit }')
+        [ -n "$keep" ] || keep=$(dd_tmux list-panes -t "=$1:$win" -F '#{pane_id}' | head -n 1)
+        while read -r pane; do
+            [ "$pane" = "$keep" ] && continue
+            dd_tmux kill-pane -t "$pane" && closed=$((closed + 1))
+        done < <(dd_tmux list-panes -t "=$1:$win" -F '#{pane_id}')
+    done < <(dd_tmux list-windows -t "=$1" -F '#{window_index}')
+    jq -cMn --argjson c "$closed" '{ok: true, closed: $c}'
+}
+
 cmd_rename() {
     [ $# -eq 2 ] || dd_die "usage: devdesk rename OLD NEW"
     local old=$1 new=$2 running=0
@@ -366,7 +385,7 @@ cmd_attach() {
         dd_linger
         return
         ;;
-    --peek | --search | --last-reply)
+    --peek | --search | --last-reply | --unsplit)
         local action=${1#--}
         shift
         "cmd_${action//-/_}" "$@"

debian/changelog

@@ -1,3 +1,22 @@
+devdesk (0.10.3) bookworm; urgency=medium
+
+  * No tmux right-click menus (#52). A stray click on one split a pane, or
+    could kill Claude's window. "Close split panes (keeps Claude)" in the
+    command palette, backed by `--unsplit`, removes a split that happened
+    anyway.
+
+ -- Jared Vititoe <jjvititoe1@gmail.com>  Tue, 13 Oct 2026 09:00:00 -0400
+
+devdesk (0.10.2) bookworm; urgency=medium
+
+  * Selecting text in the terminal works like a normal terminal (#51). A
+    drag is a browser selection that stays highlighted and is copied when
+    you let go, with a short toast. Ctrl+C copies the selection and
+    interrupts only when nothing is selected. The wheel still scrolls tmux
+    history, and the tmux status line still takes clicks.
+
+ -- Jared Vititoe <jjvititoe1@gmail.com>  Mon, 12 Oct 2026 16:36:00 -0400
+
 devdesk (0.10.1) bookworm; urgency=medium
 
   * Everything in 0.10.0, which was never published: its CI test for the

share/tmux.conf

@@ -8,7 +8,13 @@ set -s set-clipboard on                # tmux copy-mode -> OSC 52 -> browser cli
 set -s default-terminal "tmux-256color"
 set -s terminal-features[90] "xterm-256color:RGB"  # fixed index: re-sourcing must not append
 set -g history-limit 50000
-set -g mouse on                        # wheel scrolls history; Shift+drag selects natively
+set -g mouse on                        # wheel scrolls history; a drag selects in the browser (devdesk#51)
+# No right-click menus (devdesk#52): one stray click on them splits a pane or
+# kills a window (Claude's). Splits and kills stay on the keyboard (^b % ^b x).
+unbind -n MouseDown3Pane
+unbind -n M-MouseDown3Pane
+unbind -n MouseDown3Status
+unbind -n MouseDown3StatusLeft
 set -g allow-passthrough off       # output may not bypass tmux (title/clipboard spoofing)
 set -g renumber-windows on
 

tests/attach.bats

@@ -1181,3 +1181,17 @@ JSONL
     [ "$(posts)" -eq 1 ]
     [ "$(cat "$DEVDESK_STATE_DIR/usage-warned")" = 2000018000 ]
 }
+
+@test "unsplit closes extra panes and keeps Claude's (#52)" {
+    start_server
+    devdesk new alpha
+    tmux -S "$DEVDESK_SOCKET" split-window -h -t =alpha:claude
+    tmux -S "$DEVDESK_SOCKET" split-window -v -t =alpha:shell
+    run devdesk attach --unsplit alpha
+    [ "$status" -eq 0 ]
+    [ "$(jq -r .closed <<<"$output")" = 2 ]
+    [ "$(tmux -S "$DEVDESK_SOCKET" list-panes -t =alpha:claude -F '#{pane_start_command}')" = "$REPO/libexec/devdesk-claude-run" ]
+    [ "$(tmux -S "$DEVDESK_SOCKET" list-panes -t =alpha:shell | wc -l)" = 1 ]
+    run devdesk attach --unsplit alpha
+    [ "$(jq -r .closed <<<"$output")" = 0 ]
+}

web/index.template.html

@@ -176,7 +176,7 @@
     <span class="lt-footer-sep">│</span>
     <span class="lt-footer-hint"><span class="lt-footer-key">^b d</span>detach</span>
     <span class="lt-footer-sep">│</span>
-    <span class="lt-footer-hint"><span class="lt-footer-key">⇧drag</span>select</span>
+    <span class="lt-footer-hint"><span class="lt-footer-key">drag</span>copy</span>
     <span class="lt-footer-sep">│</span>
     <span class="lt-footer-hint"><span class="lt-footer-key">drop / paste</span>attach files</span>
     <span class="lt-footer-sep">│</span>

web/src/main.js

@@ -750,6 +750,16 @@ async function compact(session) {
   return undefined;
 }
 
+// A stray split (devdesk#52): close every extra pane, keeping Claude's.
+async function unsplit(session) {
+  try {
+    const result = await sessionAction('unsplit', session);
+    toast.success(result?.closed ? `Closed ${result.closed} pane${result.closed === 1 ? '' : 's'}` : 'No split panes');
+  } catch (error) {
+    toast.error(error.message);
+  }
+}
+
 async function copyLink() {
   const url = new URL(window.location.href);
   url.search = state.session ? `?arg=${encodeURIComponent(state.session)}` : '';
@@ -801,6 +811,7 @@ function buildCommands() {
     add({ id: 'win-shell', group: 'Terminal', icon: '1', label: 'Shell window', kbd: '^b 1', run: () => sendKeys('\x021') });
     add({ id: 'scroll', group: 'Terminal', icon: '⇞', label: 'Scroll back (tmux copy mode, q to leave)', kbd: '^b [', keywords: 'history scrollback', run: () => sendKeys('\x02[') });
     add({ id: 'detach', group: 'Terminal', icon: '⏏', label: 'Detach (the session keeps running)', kbd: '^b d', run: () => sendKeys('\x02d') });
+    add({ id: 'unsplit', group: 'Terminal', icon: '▣', label: 'Close split panes (keeps Claude)', keywords: 'pane split remove side by side layout', run: () => unsplit(state.session) });
   }
 
   if (state.session) {
@@ -876,6 +887,8 @@ const KEY_HELP = [
     ['Ctrl+⇧ E', 'Files: browse, preview, diff, edit (Esc closes)'],
     ['Ctrl+P', 'Files: go to file'],
     ['Ctrl+S', 'Files: save the open file'],
+    ['Drag', 'Select text; it is copied when you let go'],
+    ['Ctrl+C', 'Copy the selection (interrupts only when nothing is selected)'],
     ['Ctrl+⇧ C / V', 'Copy selection / paste'],
     ['⇧ drag', 'Select text in the browser'],
     ['Drop or paste a file', 'Upload it and attach it for Claude'],
@@ -1199,6 +1212,7 @@ async function boot() {
     fontSize,
     theme: getTheme(),
     onShiftEnter: () => state.conn?.sendInput('\n'),
+    onCopied: (text) => toast.success(`Copied ${text.length.toLocaleString()} character${text.length === 1 ? '' : 's'}`, 1500),
   }));
   onThemeChange((theme) => {
     term.options.theme = THEMES[theme];

web/src/term.js

@@ -90,7 +90,7 @@ export async function loadFonts(size) {
   }
 }
 
-export function createTerminal(container, { fontSize, theme = 'dark', onShiftEnter }) {
+export function createTerminal(container, { fontSize, theme = 'dark', onShiftEnter, onCopied }) {
   const term = new Terminal({
     fontFamily: FONT_FAMILY,
     fontSize,
@@ -113,16 +113,28 @@ export function createTerminal(container, { fontSize, theme = 'dark', onShiftEnt
     window.open(uri, '_blank', 'noopener');
   }));
 
+  const copySelection = () => {
+    const text = term.getSelection();
+    navigator.clipboard?.writeText(text).then(() => onCopied?.(text), () => {});
+  };
+
   term.attachCustomKeyEventHandler((event) => {
     // Shift+Enter: newline in Claude's prompt (Ctrl+J), not submit.
     if (event.key === 'Enter' && event.shiftKey && !event.ctrlKey && !event.altKey && !event.metaKey) {
       if (event.type === 'keydown') onShiftEnter();
       return false;
     }
+    // Ctrl+C with text selected copies it instead of interrupting (devdesk#51).
+    if (event.type === 'keydown' && event.ctrlKey && !event.shiftKey && !event.altKey && !event.metaKey
+        && event.code === 'KeyC' && term.hasSelection()) {
+      copySelection();
+      term.clearSelection();
+      return false;
+    }
     // Ctrl+Shift+C / Ctrl+Shift+V: browser clipboard, like desktop terminals.
     if (event.type === 'keydown' && event.ctrlKey && event.shiftKey && !event.altKey) {
       if (event.code === 'KeyC' && term.hasSelection()) {
-        navigator.clipboard?.writeText(term.getSelection()).catch(() => {});
+        copySelection();
         return false;
       }
       if (event.code === 'KeyV') {
@@ -135,6 +147,35 @@ export function createTerminal(container, { fontSize, theme = 'dark', onShiftEnt
 
   term.open(container);
 
+  // devdesk#51: tmux runs with the mouse on (wheel scrolls its history), so a
+  // drag would select inside tmux, which copies and then drops the highlight on
+  // release. A left-button drag in the terminal is made a browser selection
+  // instead (what Shift+drag does): it stays highlighted and is copied on
+  // release. Clicks on tmux's status line (the window tabs) still go to tmux.
+  const screen = () => container.querySelector('.xterm-screen');
+  container.addEventListener('mousedown', (event) => {
+    if (event.button !== 0 || event.shiftKey || event.ddForced || term.modes.mouseTrackingMode === 'none') return;
+    const rect = screen()?.getBoundingClientRect();
+    if (!rect) return;
+    const row = Math.floor(((event.clientY - rect.top) / rect.height) * term.rows);
+    if (row >= term.rows - 1) return; // status line
+    event.preventDefault();
+    event.stopImmediatePropagation();
+    const forced = new MouseEvent('mousedown', {
+      bubbles: true, cancelable: true, view: window, detail: event.detail, button: 0, buttons: event.buttons,
+      clientX: event.clientX, clientY: event.clientY, screenX: event.screenX, screenY: event.screenY,
+      shiftKey: true, ctrlKey: event.ctrlKey, altKey: event.altKey, metaKey: event.metaKey,
+    });
+    forced.ddForced = true;
+    event.target.dispatchEvent(forced);
+  }, true);
+  // Copy when the drag (or double/triple click) ends with something selected.
+  container.addEventListener('mouseup', () => {
+    setTimeout(() => {
+      if (term.hasSelection() && term.getSelection().trim()) copySelection();
+    }, 0);
+  });
+
   // Touch devices: the DOM renderer is more reliable at high DPR than WebGL.
   if (window.matchMedia?.('(pointer: coarse)').matches) return { term, fit };
   try {