Allow multiple values for field filter options in wp plugin list and wp theme list

[Copilot]

wp plugin list --name=plugin1,plugin2 was documented as possible via [-<field>=<value>] but --name=plugin1 --name=plugin2 (repeating args) silently reduced to the last value. Same issue affected --status when passed multiple times. Additionally, wp theme list --status=active,parent (comma-separated) returned an empty table instead of filtering by both statuses.

Changes

• CommandWithUpgrade::_list: Handle array $field_filter values — when WP-CLI collects repeated args into an array (e.g. --name=a --name=b), the filter now correctly matches against all provided values instead of failing silently.
• Plugin_Command / Theme_Command: Declare --status as repeating ([--status=<status>...]) to opt-in to WP-CLI's multi-value arg handling (see Add support for multiple flag values via repeated flags using ellipsis syntax wp-cli#6198), preventing the framework from collapsing --status=active --status=inactive to just inactive.
• features/theme.feature: Added explicit test coverage for comma-separated --status=active,inactive in wp theme list, confirming the WP-CLI framework's comma-split validation and _list filtering both work correctly.

Usage

# Comma-separated (already worked for --name; now explicitly tested for --status)
wp plugin list --name=akismet,wordpress-importer
wp theme list --status=active,inactive
wp theme list --status=active,parent

# Repeating args (now works)
wp plugin list --name=akismet --name=wordpress-importer
wp plugin list --status=active --status=inactive
wp theme list --name=twentytwelve --name=twentyeleven
wp theme list --status=active --status=inactive

Original prompt

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This section details on the original issue you should resolve

<issue_title>Allow multiple values for --field options in wp plugin list</issue_title>
<issue_description>It's not possible to use multiple values in the --field option to customize wp plugin list.

For example, it would be helpful to be able to do the example command below:

wp plugin list --name=example-plugin1,example-plugin-2

This should only show the info for the plugins in the list, not all of the plugins.</issue_description>

<agent_instructions>This is now possible by passing the arg multiple times (opt-in), see wp-cli/wp-cli#6198 for details</agent_instructions>

Comments on the Issue (you are @copilot in this section)

@schlessera Correct, this is not possible. The main issue with a mechanism like that is the actual "user interface". If you use a comma for separating values, for example, you cannot have a comma in a value you're looking for anymore.

I wonder if the comma is actually useful in any of the fields here...?</comment_new>
<comment_new>@danielbachhuber
Related #224</comment_new>
<comment_new>@swissspidy
Related:

• Add support for multiple flag values via repeated flags using ellipsis syntax wp-cli#6198</comment_new>

• Fixes Allow multiple values for --field options in wp plugin list #159

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