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Reject comments after implicit boolean config keys - #2239
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🟢 Approval recommended
The reviewed changes and regression coverage address the stated parsing issue.
Pull request overview
Fixes parsing and round-tripping of implicit boolean keys followed by # or ; comments.
Changes:
- Stops option matching at comment markers.
- Adds regression coverage for parsing, boolean access, and write-back.
File summaries
| File | Summary |
|---|---|
test/test_config.py |
Adds comment-handling regression tests. |
git/config.py |
Updates assignment and valueless-key regex handling. |
Review details
- Files reviewed: 2/2 changed files
- Comments generated: 0
- Review effort level: Lite
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Actually these have to be rejected, just like in Git. |
Note that this is just a fixup, on a huge hack which is the native git-config parsing. Let's just hope this holds up until v4. <!-- agent --> GitConfigParser accepted entries such as "enabled # comment" and "enabled ; comment" even though Git rejects them. The comment became part of the option name, and an equals sign or colon inside the comment could make the entry look like an assignment. Silently stripping the comment would also accept configuration that Git considers invalid. Exclude both comment markers from the shared option-name expression and require a full-line match for valueless options. The assignment pattern cannot cross a comment marker, and the valueless fallback cannot accept just the valid-looking prefix. Such lines now raise the existing ParsingError during reading or an attempted edit. Ordinary bare keys retain their implicit true value and round-trip behavior. Add six regression cases covering both markers, spaces, tabs, adjacent comments, and assignment delimiters inside comments. Compare rejection with git config, check both getboolean and an unrelated edit raise ParsingError, and verify that the failed edit leaves the original bytes untouched. All six cases failed before full-line matching was added. Git reference: checkout 1630431f326e15fcde608827b5ff38422528eb59, config.c:get_value. Without an assignment, that parser requires the line to end after the key and optional whitespace. Runtime comparisons used Git 2.50.1 (Apple Git-155), which rejected all six inputs with exit status 128. Validation on Python 3.12.14: 42 configuration tests and six regression subtests passed, with two existing skips. Ruff lint and formatting and git diff --check passed. Assisted-by: GPT 6.0 Co-authored-by: GPT 6.0 <codex@openai.com>
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🟡 Changes recommended
The parser and regression tests do not implement or verify the intended comment-handling behavior.
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Review details
- Files reviewed: 2/2 changed files
- Comments generated: 2
- Review effort level: Lite
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Everything below this line was generated by
Codex GPT-6.Created by Codex on behalf of Byron. Byron will review before this is ready to merge.
Git rejects bare config keys followed by
#or;comments. GitPython previously accepted those lines with the comment in the option name, and an=or:inside the comment could make the line look like an assignment.Exclude comment markers from the shared option-name expression and require a full-line match for valueless options. Reading or editing these entries now raises
ParsingError. Ordinary bare keys retain their implicit true value.Validation
ParsingError, and a failed edit leaves the original file untouched. All six cases failed before full-line matching was added.git diff --checkpassed.vxuttnt, commit2d4f068(fix: reject comments after implicit boolean config keys).codex review --commit 2d4f0683341cb77e75a8656484d3c09a441f9d22attempt could not complete because the Codex CLI refresh token has expired.Git reference
Inspected Git checkout
1630431f326e15fcde608827b5ff38422528eb59, particularlyconfig.c:get_value. Without an assignment, Git requires the line to end after the key and optional whitespace. Git 2.50.1 (Apple Git-155) rejects all six regression inputs with exit status 128.Reported issue
The compatibility requirement was clarified to match Git's rejection of these entries. Original report:
Follow-up to PR 2238:
This matches the valueless-option regex against the unprocessed line, so a valid Git entry such as
enabled # comment(orenabled ; comment) is stored with the comment text in the option name instead of asenabled. A write-back then emits that text as part of the key, andgetboolean("flag", "enabled")still cannot find the option; strip the unquoted comment before extracting the name and add a regression for it.