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fix(tui): pause/resume stdin subscription around external editor

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io.stdin is a single-subscription stream — calling listen() a second time
after cancel() throws 'Stream has already been listened to'. Use
keySub.pause() before launching the editor and keySub.resume() after
it exits instead.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
This commit is contained in:
Chris Hendrickson 2026-04-25 14:22:09 -04:00
parent 5c3d00e2a4
commit eeed3fdba0
1 changed files with 3 additions and 9 deletions
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12
packages/kanban/lib/src/commands/tui_command.dart
View file

@ -302,9 +302,7 @@ class TuiCommand extends DewCommand {
}
// Key stream — raw bytes converted to Key values without blocking.
// Declared as var so it can be cancelled and re-created around external editor.
StreamSubscription<List<int>> keySub;
keySub = io.stdin.listen((bytes) {
final keySub = io.stdin.listen((bytes) {
for (final key in _parseKeys(bytes)) {
if (!events.isClosed) events.add(_TuiKey(key));
}
@ -649,7 +647,7 @@ class TuiCommand extends DewCommand {
'${io.Directory.systemTemp.path}/dew_edit_${es.ticket.id}.md',
);
await tmpFile.writeAsString(es.body);
await keySub.cancel();
keySub.pause();
console.rawMode = false;
console.showCursor();
console.clearScreen();
@ -661,13 +659,9 @@ class TuiCommand extends DewCommand {
await proc.exitCode;
es.body = await tmpFile.readAsString();
await tmpFile.delete();
keySub = io.stdin.listen((bytes) {
for (final key in _parseKeys(bytes)) {
if (!events.isClosed) events.add(_TuiKey(key));
}
});
console.rawMode = true;
console.hideCursor();
keySub.resume();
default:
break;
}