Resolves RV14 (docs/rewrite/notes/review-rv14-codex.md, final-Z17.md):
- +show-face --cp parses as u21 (new U21 field type): out-of-range
values give an invalid-value diagnostic and exit 1 instead of a panic;
--string accepts raw bytes and fails with error.InvalidUtf8 after the
codepoint lookup like Zig.
- CLI actions write through ZigWriter, a model of Zig 0.15's buffered
File.writer (fixed buffer, drain on overflow, explicit flush), so
stdout/stderr interleave in Zig's flush order (+show-face, help,
version, validate-config, show-config, list-*, ssh-cache, crash-report,
edit-config, new-window).
- Zig 0.15.2 std.fs.path.isAbsolute port (Windows: \theme and /theme are
absolute) replaces Path::is_absolute at every Zig isAbsolute site.
- io_uring is available iff a 256-entry ring can be created, like
libxev; the reactor falls back to IORING_OP_TIMEOUT without EXT_ARG.
- Windows basename (`λ:theme`) verified against 0.15.2 (test added).
Test Plan:
- cargo test --workspace --no-fail-fast
- diff +show-face outputs (pipe) against /usr/bin/ghostty
ddidderr
f76179f49a