Fix markdown table parser consuming lines without pipes as table rows - #1626
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The TableRow rule in the PEG grammar allowed rows with zero pipe characters (TableItem2*). This caused lines like `<br>` immediately following a table to be parsed as single-cell table rows, producing spurious `<td><br></td>` in the rendered HTML. Change TableItem2* to TableItem2+ so that rows not starting with `|` must contain at least one `|` to be recognized as table rows.
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st0012
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February 26, 2026 11:35
Change TableAlign2* to TableAlign2+ in the TableLine rule for consistency with the TableRow fix. A separator line without any pipe character would conflict with horizontal rule parsing anyway.
Verify that a separator line with no pipe character does not form a valid table, matching the TableLine rule change.
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The TableRow rule in the PEG grammar allowed rows with zero pipe characters (
TableItem2*). This caused lines like<br>immediately following a table to be parsed as single-cell table rows, producing spurious<td><br></td>in the rendered HTML.Change
TableItem2*toTableItem2+so that rows not starting with|must contain at least one|to be recognized as table rows.