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Resolves PATH through file-truename before applying home-directory and
read/write checks across the path-handling tools (git_status, git_log,
git_diff, move_to_trash, read_text_file, update_text_file,
write_text_file, list_directory_files, read_buffer, web_fetch).
Without the resolve step, a symlink under HOME pointing outside HOME
would pass the prefix check but the tool would act on the real target
-- a symlink-escape.
move_to_trash also tightens the trash-bin construction (treats empty
file extensions correctly) and switches the "critical directories"
list to truename-resolved canonical forms so a symlinked ~/.config
can't be trashed via an aliased path.
update_text_file fixes an off-by-one in the line-count derivation
when the source content is empty.
Each source change pairs with tests in tests/test-gptel-tools-*.el
and tests/test-update-text-file.el covering the realpath escape
paths, the empty-extension trash case, and the empty-content line-
count edge. Combined coverage is now 100% across all ten gptel-tools
source files: 516 / 516 executable lines, 217 tests.
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Three read-only git context tools so gptel can see what's changed
without me pasting `git status` / `git log` / `git diff` output into
every chat turn. Builds the first batch from the ADOPT bucket in
`docs/design/gptel-tools-shortlist.org`.
Shape per tool:
- `gptel-tools/git_status.el` — `git status --short --branch` for a
directory inside a git working tree under HOME. Returns the
porcelain output, or a "Clean working tree" marker when only the
branch line is present.
- `gptel-tools/git_log.el` — `git log --oneline -nN` with an optional
`--since` filter. N defaults to 20, capped at 100; nil / non-
integer / out-of-range N falls back to the default.
- `gptel-tools/git_diff.el` — `git diff [REF1 [REF2]] [-- FILE]`.
Output capped at ~500KB so a runaway diff can't blow up context;
truncation is reported inline.
Validation is uniform: path must resolve under HOME, must be a
directory, must be inside a git working tree (verified via
`git rev-parse --is-inside-work-tree`). Color is disabled via
`-c color.ui=false` at the git level (`git status` doesn't accept
`--no-color` directly).
Tests run against real temp git repos created via `process-file`,
not mocked — there's nothing in gptel-tools/git_*.el that's
process-mockable in a meaningful way, and a real `git init` + a
couple of commits is cheaper than building a fake. 31 tests total:
7 for git_status, 11 for git_log, 13 for git_diff.
Wired into `cj/gptel-local-tool-features` so gptel exposes the
three tools on next restart.
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