Recognize parameters whose value is optional in `DocParser` by jahirulwp · Pull Request #6410 · wp-cli/wp-cli

jahirulwp · 2026-09-22T16:04:28Z

DocParser::get_param_desc() and DocParser::get_param_args() looked for --<key>=, so a parameter declared as [--<key>[=<value>]] never matched: the character after the name is [, not =.

The YAML block of such a parameter was therefore never read, which silently dropped its default, options, deprecated and sensitive entries even though wp help printed them, and left --prompt and the parameter-error output without a description.

Match both spellings through a single shared pattern.

Summary by CodeRabbit

New Features
- Command parameters can now accept optional values, such as --volume or --volume=loud.
- Optional-value parameters support documented defaults and allowed options.
- Bare flags remain supported when no value is provided.
Bug Fixes
- Improved parameter matching prevents similarly named options from being confused.
- Invalid option values now produce a clear error and a failing command status.
- Deprecated parameters with optional values are recognized consistently.

`DocParser::get_param_desc()` and `DocParser::get_param_args()` looked for `--<key>=`, so a parameter declared as `[--<key>[=<value>]]` never matched: the character after the name is `[`, not `=`. The YAML block of such a parameter was therefore never read, which silently dropped its `default`, `options`, `deprecated` and `sensitive` entries even though `wp help` printed them, and left `--prompt` and the parameter-error output without a description. Match both spellings through a single shared pattern.

github-actions · 2026-09-22T16:04:39Z

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coderabbitai · 2026-09-22T16:04:44Z

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📝 Walkthrough

Walkthrough

DocParser now matches optional-value parameter syntax. Tests and validation scenarios cover defaults, accepted values, bare flags, invalid values, prefix isolation, and deprecated arguments.

Changes

Optional value parsing

Layer / File(s)	Summary
Optional-value parameter matching `php/WP_CLI/DocParser.php`	`get_param_desc` and `get_param_args` use a shared regex helper that matches optional-value synopsis forms.
Parser and command validation `tests/DocParserTest.php`, `features/validation.feature`	Tests cover argument parsing, prefix isolation, and deprecated optional values. The validation scenario covers defaults, accepted values, bare flags, and invalid values.

Priority: ⬇️ Low

Estimated code review effort: 3 (Moderate) | ~20 minutes

Change: Bug fix

Suggested reviewers: swissspidy

Merge Risk: 🔵 Low · up to 39336

The new validation scenario does not follow the repository’s Behat command dependency rule. Adjust the test setup before merging.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 42.86% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 7 functions across 2 files. (1 skipped: 1…	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the main change: adding support for parameters with optional values in DocParser.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

Full details: Docstring Coverage

Explanation

Docstring coverage is 42.86% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 7 functions across 2 files. (1 skipped: 1 unsupported.)

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Actionable comments posted: 1

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Inline comments:
In `@features/validation.feature`:
- Line 462: Update the Behat scenario in features/validation.feature to invoke a
WP-CLI command declared in composer.json instead of the fixture-defined rock-on
command; preserve the scenario’s validation intent while using the
Composer-installed command.

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📥 Commits

Reviewing files that changed from the base of the PR and between 0060c9b and 39336c8.

📒 Files selected for processing (3)

features/validation.feature
php/WP_CLI/DocParser.php
tests/DocParserTest.php

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swissspidy

Thank you!

Looks like we haven't used this particular format in our own commands, which is why this was never encountered. Looks like a reasonable thing to support.

codecov · 2026-09-22T16:49:00Z

Codecov Report

✅ All modified and coverable lines are covered by tests.

📢 Thoughts on this report? Let us know!

WP-CLI now validates `options` for optional-value flags such as `[--porcelain[=<field>]]` itself (wp-cli/wp-cli#6410), so the command-level check is unreachable. Update the scenario to expect the framework's error message. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_013PyGcB6bxx6zExR9LLHv99

swissspidy · 2026-09-23T06:14:16Z

Looks like we had one case after all: wp-cli/media-command#261

jahirulwp requested a review from a team as a code owner September 22, 2026 16:04

github-actions Bot added bug parameter:prompt scope:framework labels Sep 22, 2026

coderabbitai Bot reviewed Sep 22, 2026

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Comment thread features/validation.feature

swissspidy approved these changes Sep 22, 2026

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swissspidy merged commit b2d17ed into wp-cli:main Sep 22, 2026
65 checks passed

swissspidy added this to the 3.0.0 milestone Sep 22, 2026

swissspidy mentioned this pull request Sep 23, 2026

Make invalid --porcelain test compatible with core option validation wp-cli/media-command#261

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Recognize parameters whose value is optional in `DocParser` - #6410

Recognize parameters whose value is optional in `DocParser`#6410
swissspidy merged 1 commit into
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jahirulwp:fix/docparser-optional-value-params

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