xterm2 5.4.0-dev.1

Maintained Flutter terminal emulator package with fast rendering and broad VT/xterm compatibility.

5.4.0-dev.1 - 2026-10-12

• Move the terminal model (state machine, buffers, escape-sequence parsing and input encoding) into the new pure-Dart xterm2_core package, so it can run without Flutter, for example in a server that tracks terminal screens. The xterm2 API is unchanged: package:xterm2/core.dart and package:xterm2/xterm.dart export the same types.
• Require Dart 3.6 or newer (Flutter 3.27 or newer).

5.3.0 - 2026-07-28

• Render bounded search matches with a distinct active result.
• Auto-scroll scrollback while extending a selection beyond the viewport.
• Add Shift+Home/End/PageUp/PageDown scrollback navigation.
• Track primary OSC 133/633 prompts across scrollback and reflow.
• Navigate semantic prompts with native platform shortcuts.
• Correct modified arrow-key sequences across main and alternate screens.
• Encode modified F1–F4 keys with xterm-compatible CSI sequences.
• Preserve Shift+wheel scrollback while applications report mouse input.
• Report horizontal wheel gestures and simulate them in alternate screens.
• Keep application scrolling active when Flutter replaces its scroll position.
• Preserve active and saved cursor positions through resize reflow.
• Leave double- and triple-click handling to applications using mouse tracking.
• Complete application mouse drags with release events without host selection.
• Report mouse buttons immediately without gesture-recognizer delays.
• Report back and forward mouse buttons through extended mouse protocols.
• Ignore unsupported highlight tracking without disrupting active mouse input.
• Respond to legacy DECID terminal identification requests.
• Report the current xterm2 version to terminal applications.
• Preserve complete semicolon-rich OSC titles, paths, and cursor names.
• Render the British national replacement character set.
• Render text decorations consistently across blank cells.
• Ignore orphaned zero-width marks instead of altering existing cells.
• Preserve combining marks after changing grapheme-cluster mode.
• Let wide symbol glyphs use adjacent blank cells instead of clipping.
• Keep IME composition text on the active row near the right edge.
• Preserve Ctrl+A and Ctrl+V input with standard terminal clipboard shortcuts.
• Preserve AltGr-composed text on Windows and Linux keyboards.
• Encode modified Enter keys distinctly for modern interactive CLIs.
• Preserve distinct Ctrl+Shift letter chords with fixterms encoding.
• Add standard Ctrl+Insert copy and Shift+Insert paste shortcuts.
• Correct Ctrl+Alt+Backspace and DEC backarrow modifier handling.
• Encode modified Escape keys distinctly for interactive applications.
• Preserve legacy Ctrl+number-row control chords.
• Bound streaming clipboard capture memory and recover after overflow.
• Reduce allocation overhead for non-ASCII terminal output.
• Avoid duplicate Unicode width lookups while processing terminal output.
• Preserve supplementary Unicode glyphs split across output chunks.
• Reduce memory overhead when sanitizing unsafe paste payloads.
• Release consumed terminal input buffers without waiting for more output.
• Ignore unsupported control bytes instead of rendering them as glyphs.
• Harden hyperlink hit testing during concurrent resize and reflow.
• Update hovered OSC 8 links immediately when the platform modifier changes.

5.2.0 - 2026-07-25

• Harden resize behavior for synchronized output, tab stops, and size reports.
• Reduce parser, allocation, and cell-copy overhead during dense TUI output.
• Allocate scrollback cell metadata lazily to reduce idle memory use.
• Match modern terminal handling for Alt-modified text input.
• Expose complete OSC 3008 hierarchical context metadata.
• Add bounded Unicode-aware scrollback search across soft wraps.

5.1.0 - 2026-07-19

• Add Unicode 17 width handling and broader emoji grapheme support.
• Add Kitty keyboard modifiers and expanded VT/xterm protocol compatibility.
• Improve OSC 8 hyperlinks, selection isolation, clear behavior, and inline TUI scrolling.
• Expand procedural rendering for box drawing, blocks, mosaics, branch graphs, and legacy symbols.
• Improve glyph fallback, wide-character rendering, contrast, and decoration accuracy.
• Reduce parser, resize, repaint, and paragraph-cache overhead under sustained output.
• Harden resize reflow and buffer editing across wrapped and wide lines.

5.0.0 - 2026-07-11

• Rename package to xterm2 for the maintained fork.
• Support DEC synchronized updates with Alacritty-compatible timeout recovery.
• Report terminal view focus changes for DEC focus tracking mode.
• Render application-selected DECSCUSR cursor shapes.
• Animate blinking cursors with Alacritty-compatible interval and timeout.
• Bound OSC payload memory and safely discard oversized fragmented sequences.
• Bound CSI payload and parameter memory across fragmented sequences.
• Expose authoritative current-directory updates from OSC 7.
• Parse, render, hit-test, and activate bounded OSC 8 hyperlinks.
• Render common block and box-drawing glyphs procedurally without font seams.
• Reuse cell paints to reduce per-frame rendering allocations.
• Keep the full viewport available when maxLines is smaller than its height.
• Improve terminal glyph rendering, prompt symbols, OSC hyperlinks, cursor visibility, and scroll behavior.

4.0.0 - 2024-02-27

• Update for Flutter 3.19 #190. Thanks @domesticmouse.
• Fix designate charset logic #186. Thanks @djnalluri.

3.6.1-pre - 2023-04-28

• Add Termianl.onPrivateOSC callback
• Copy shortcut on Windows default to Ctrl+Shift+V (#173)

3.6.0-pre - 2023-04-27

• Basic ZMODEM support

3.5.0 - 2023-04-20

• Support customizing word separators for selection #160. Thanks @itzhoujun.
• Fix incorrect tab stop handling #161. Thanks @itzhoujun.
• Added support for Ctrl+Home, Ctrl+End etc #169. Thanks @nuc134r.

3.4.1 - 2023-01-27

• Fix Flutter 3.7 incompatibilities #151, thanks @jpnurmi.

3.4.0 2022-11-4

• Mouse input is enabled by default.
• Support scrolling in alternate buffer.
• Fix deleteLines behavior.
• Fix eraseDisplayFromCursor removes characters before the cursor.

3.3.0 - 2022-10-30

• Sync ShortcutManager's shortcuts in didUpdateWidget #140, thanks @jpnurmi.
• fix: terminal font size not respecting system level font scale #138, thanks @LucasAschenbach.
• Fix selection color #135, thanks @jpnurmi.
• fix: dispose controllers of TerminalView #132, thanks @tauu.
• feat: add hardwareKeyboardOnly flag to TerminalView #131, thanks @tauu.
• feat: initial mouse support #130, thanks @tauu.
• feat: limited window manipulation support #129, thanks @tauu.
• fix: workaround to draw underlined spaces #128, thanks @tauu.
• feat: block selection #127, thanks @tauu.
• feat: enable changing the inputHandler of a terminal #126, thanks @tauu.
• fix: export TerminalTargetPlatform #125, thanks @tauu.
• fix: only dispose the FocusNodes which TerminalView creates #124, thanks @tauu.
• feat: expose readOnly flag of CustomTextEdit in TerminalView #123, thanks @tauu.
• fix: supports numpad enter key #137.
• feat: expose reflowEnabled flag #104.
• docs: add virtual keyboard example #141.

3.2.7 2022-9-13

• Fix lint issues.

3.2.6 2022-9-13

• First stable release of xterm.dart v3.

3.2.6-alpha 2022-9-13

• Fix new line width in reflow.

3.2.5-alpha 2022-9-12

• Fix intent related issue.

3.2.4-alpha 2022-9-12

• Use flutter native shortcut intents.

3.2.3-alpha 2022-9-12

• Export shortcut related classes.

3.2.2-alpha 2022-9-12

• Implement default keyboard shortcuts.

3.2.1-alpha 2022-9-12

• Disable optional line scroll mode that is under development.

3.2.0-alpha 2022-9-12

• Enhanced selection handing.
• More tests.

3.1.0-alpha 2022-9-4

• Update dependencies & merge into master

3.0.6-alpha 2022-4-4

• Export TerminalViewState
• Added onTap callback to TerminalView

3.0.5-alpha 2022-4-4

• Avoid resize when RenderBox.size is zero.
• Added charInput and textInputmethod.
• Added requestKeyboard, closeKeyboard and hasInputConnectionmethod.
• Export KeyboardVisibilty

3.0.4-alpha 2022-4-1

• Improved text editing
• Added composing state painting
• Adapt to MediaQuery.padding

3.0.3-alpha 2022-3-28

• Improved scroll handing
• Improved resize handing
• Fix focus repaint
• Fix OSC title update

3.0.2-alpha 2022-3-28

• Re-design KeyboardVisibilty

3.0.1-alpha 2022-3-27

• Add KeyboardVisibilty

3.0.0-alpha 2022-3-26

• Initial release of v3.

2.6.0 - 2021-12-28

• Add scrollBehavior field to the TerminalView class #55.
• Feature: Search #60. Thanks @devmil.
• Fixes for occasional unintended multi character input #61. Thanks @devmil.
• Fixes ALT + L for a Mac (German Layout) #62. Thanks @devmil.
• Fixes example build problem of flutter-windows for new version of flutter #63. Thanks @linhanyu.
• Fixes inverse color text (when background == 0) #66. Thanks @devmil.
• Fixes assert of scrollController.position #67. Thanks @linhanyu.
• Change interface of ssh.dart example to satisfied new dartssh #69. Thanks @linhanyu.
• add configuration options for keyboard #74. Thanks @jda258.
• Adds check if the TerminalIsolate has already been started #77. Thanks @devmil.

2.5.0-pre 2021-8-4

• Support select word / whole row via double tap #40. Thanks @devmil.
• Adds "selectAll" to TerminalUiInteraction #43. Thanks @devmil.
• Fixes sgr processing #44,#45. Thanks @devmil.
• Adds blinking Cursor support #46. Thanks @devmil.
• Fixes Zoom adaptions on non active buffer #47. Thanks @devmil.
• Adds Padding option to TerminalView #48. Thanks @devmil.
• Removes no longer supported LogicalKeyboardKey #49. Thanks @devmil.
• Adds the composing state #50. Thanks @devmil.
• Fix scroll problem in mobile device #51. Thanks @linhanyu.

2.4.0-pre 2021-6-13

• Update the signature of TerminalBackend.resize() to also receive dimensions in pixels(#39). Thanks @michaellee8.

2.3.1-pre 2021-6-1

• Export theme/terminal_style.dart

2.3.0-pre 2021-6-1

• Add import 'package:xterm/isolate.dart';

2.2.1-pre 2021-6-1

• Make BufferLine work on web.

2.2.0-pre 2021-4-12

2.1.0-pre 2021-3-20

• Better support for resizing and scrolling.
• Reflow support (in progress #13), thanks @devmil.

2.0.0 2021-3-7

• Clean up for release

2.0.0-pre 2021-3-7

• Migrate to nnbd

1.3.0 2021-2-24

• Performance improvement.

1.2.0 2021-2-15

• Pass TerminalView's autofocus to the InputListener that it creates. #10, thanks @timburks

1.2.0-pre 2021-1-20

• add the ability to use fonts from the google_fonts package #9

1.1.1+1 2020-10-4

• Update readme

1.1.1 2020-10-4

• Add brightWhite to TerminalTheme

1.1.0 2020-9-29

• Fix web support.

1.0.2 2020-9-29

• Update link.

1.0.1 2020-9-29

• Disable debug print.

1.0.0 2020-9-28

• Update readme.

1.0.0-dev 2020-9-28

• Major issues are fixed.

0.1.0 2020-8-9

• Bug fixes

0.0.4 2020-8-1

• Revert version constrain

0.0.3 2020-8-1

• Update version constrain

0.0.2 2020-8-1

• Update readme

0.0.1 2020-8-1

• First version