[obenland]

Fixes https://meta.trac.wordpress.org/ticket/5123

A pipe inside a Markdown table cell has to be escaped as \|. GitHub Flavored Markdown removes that backslash anywhere in the cell, including inside code spans, so GitHub shows string|null. Jetpack’s parser only drops it outside code spans, so imported handbook pages show the backslash. The packages-env page currently has five such cells, for example the type of core, phpVersion and mariadbVersion reads string\|null.

After the Markdown transform, the importer now replaces \| with | inside <td> and <th> elements. Code outside tables and fenced code blocks keep their backslashes, as in GFM.

Testing

1. Before: https://developer.wordpress.org/block-editor/reference-guides/packages/packages-env/#wp-env-json shows string\|null in the Type column, and .<path>\|~<path> and /<path>\|<letter>:\<path> in the source type table.
2. With the patch applied, re-import that page (or run the Block Editor handbook import).
3. The same cells read string|null, .<path>|~<path> and /<path>|<letter>:\<path> (the backslash before <path> stays, as on GitHub).
4. Check a code span with \| outside a table, and a fenced code block containing \|: both keep the backslash.

Running the Jetpack parser on the current packages/env/README.md before and after this change differs in exactly those five cells.

🤖 Generated with Claude Code

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• wordpress.org/public_html/wp-content/plugins/wporg-markdown/inc/class-importer.php

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[obenland]

@propsbot add noisysocks