The terminal's only ingestion API was write(String), so both byte
consumers decoded per chunk — a multi-byte rune split across PTY
reads (or a tail window starting mid-character, which FileTailFollower
does by construction) rendered as U+FFFD garbage. writeBytes feeds a
per-instance chunked Utf8Decoder that carries partial-rune state
across calls; the terminal pane and the Bash live-tail follower now
use it, and write(String) stays for tests and programmatic writes.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Raise the declared minimums in pubspec.yaml to what our deps already
require: Flutter >=3.35.0 / Dart >=3.9.0 (was 3.19.0 / 3.5.0). alchemist
0.12 needs Flutter 3.32; Dart 3.9 first ships in Flutter 3.35, so 3.35 is
the binding floor. Pin the exact build toolchain in .fvmrc (Flutter
3.44.1).
Moving to the Dart 3.9 language level switches `dart format` to the new
"tall" style and enables two new lints. This commit is the resulting
mechanical churn, isolated from any behaviour change:
- whole-tree `dart format` reformat (tall style)
- `dart fix` for unnecessary_underscores + use_null_aware_elements
No runtime behaviour change; `make test` green.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Adds test/terminal/terminal_test.dart — 54 unit tests covering the
`Terminal` class as a pure-Dart orchestrator: construction +
TerminalState defaults, the Observable mixin, write/writeChar,
keyInput / charInput / textInput / paste (with bracketed-paste +
ctrl/alt encodings, including macOS reservation), mouseInput
gating, resize (clamping + onResize callback + alt-buffer
scrollback clear), buffer switching (use{Alt,Main}Buffer +
clearAltBuffer), every SBC handler (bell / backspace / lineFeed /
CR / SO / SI / unknown), tab-stop manipulation (tab jump +
saturation, clearTabStopUnderCursor, clearAllTabStops, setTapStop),
every ANSI escape handler (save/restore cursor, index, nextLine,
reverseIndex, designateCharset), CSI cursor + erase + line/char
insert/delete + scroll + repeatPreviousCharacter (incl. no-op when
no preceding char), device-attribute and status reports, every
mode setter mirroring into its getter, every SGR set/unset attr +
colour setter, OSC handlers (setTitle / setIconName / unknownOSC),
and all the documented no-op fallbacks (unknownSBC, unkownEscape,
unknownCSI, setUnknownMode, setUnknownDecMode, setColumnMode,
unsupportedStyle).
Also fixes a real production bug surfaced while writing tests:
`BufferLine.eraseRange(0, 0, ...)` panicked with a `RangeError`
because the right-side wide-char guard read `_data[-1]` via
`getWidth(end - 1)` when `end == 0`. The left guard already had a
`start > 0` check; the right guard was missing the symmetric
`end > 0`. Real trigger path: `Terminal.eraseDisplayAbove`
(`ESC[1J`) with the cursor at column 0 — common after `ESC[H\x1b[1J`
home-then-erase-above sequences that many TUIs emit on redraw.
Regression test added in line_test.dart.
Coverage delta:
- terminal.dart: 0/283 → 291/291 (file grew by 8 LF for the
fix's comment lines).
- base/observable.dart: 0/7 → 7/7 (covered transitively via
Terminal's listener tests).
- Total project: 56.40% → 59.82%; coverage_floor bumped 56 → 59.
Co-Authored-By: Claude <noreply@anthropic.com>
jpmschweitzerandClaude Fable 5