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ddidderr f2252bb165 feat: port GTK version fallbacks, helpgen, bench modes, CLI leftovers

- apprt-gtk: Ghostty's runtime+build-time version gating (at_least)
  with cargo features adw_1_3/adw_1_4/adw_1_5/gtk_4_16 (default on) and
  the fallbacks for older libraries: MessageDialog (adw < 1.5),
  clipboard dialog without SwitchRow, pre-Banner debug warning and
  child-exited widgets, the old about dialog, GTK 4.16 CSS error source
  bytes. The minimum stays GTK 4.14 / libadwaita 1.5 (Ghostty's floor).
  The root build links with -z lazy so version-gated symbols don't keep
  older libraries from loading.
- ghostty-helpgen (port of helpgen.zig) generates CLI action help and
  keybinding action docs from doc comments at build time, replacing the
  checked-in help/*.txt; +help and +list-actions --docs stay
  byte-identical to Ghostty 1.3.1.
- ghostty-bench: libc wcwidth mode and separate simd/table and
  uucode/table code paths like Zig.
- ghostty-cli: Windows branches of edit-config, list-colors,
  list-keybinds and boo; ssh-cache DiskCache flock locking (no-op on
  Windows, as in Zig) with an exclusivity test.

Test Plan:
- cargo test --workspace
- diff <(cargo run -q -- +list-actions --docs) \
  <(ghostty +list-actions --docs)

2026-10-12 06:38:33 +02:00

2.1 KiB

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compat-GC: helpgen (ZIG/src/helpgen.zig)

Zig generates help strings at build time from doc comments (helpgen.zig, exposed as help_strings). The Rust port does the same instead of keeping checked-in tables.

Design

New crate crates/ghostty-helpgen (no dependencies), used as a [build-dependencies] of ghostty-cli and ghostty-input.
- doc_lines: port of extractDocComments/findCommonPrefix (strip ///, remove the common leading-space prefix of non-blank lines, keep blank lines and code fences verbatim).
- run_fn_doc: doc comment of a module's run function (Zig genActions).
- enum_variant_docs: /// docs per variant of an enum (Zig genKeybindActions).
- *_match: emit Rust match self { ... } bodies with escaped literals.
ghostty-cli/build.rs reads the variants of enum Action in src/ghostty.rs, maps ListFonts -> src/list_fonts.rs, extracts the doc of pub fn run, writes $OUT_DIR/action_help.rs; Action::help_text include!s it. A missing doc comment fails the build (as in Zig). The former src/help/*.txt files are deleted.
ghostty-input/build.rs extracts the docs of every variant of enum Action in src/binding/action.rs (now /// instead of //), writes $OUT_DIR/keybind_action_docs.rs, included by ActionKey::docs (docs = lines joined by \n plus one trailing \n, as before; help_string strips one).
Config help already derives from field docs through config_struct! (ghostty-config/src/macros.rs), so no generation was needed there.
A line-based scanner is used rather than syn: it mirrors Zig's token based approach (doc run + following item) and avoids a heavy build dep.

Verification

Outputs of +help, +list-actions [--docs] and every +<action> --help were captured before and after: byte identical. Differences vs /usr/bin/ghostty exist only for +version --help and +new-window --help (unchanged from the baseline).

Tests

ghostty-helpgen unit tests (marker stripping, common prefix, blank lines, code fences, ////, run-doc and enum-variant extraction, escaping).

2.1 KiB Raw Blame History

compat-GC: helpgen (ZIG/src/helpgen.zig)

Design

Verification

Tests

2.1 KiB

Raw Blame History