🐛 fix(render): handle formatter subclasses and wrap preformatted blocks#297
Merged
gaborbernat merged 1 commit intotox-dev:mainfrom Mar 19, 2026
Merged
🐛 fix(render): handle formatter subclasses and wrap preformatted blocks#297gaborbernat merged 1 commit intotox-dev:mainfrom
gaborbernat merged 1 commit intotox-dev:mainfrom
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The `RawDescriptionHelpFormatter` check used exact equality, so parsers with a custom formatter inheriting from it (e.g. combining `ArgumentDefaultsHelpFormatter` with `RawDescriptionHelpFormatter`) would lose all newline formatting in epilog/description text. Preformatted blocks (usage, epilog, description) also lacked text wrapping in HTML, causing long lines to overflow their container with a horizontal scrollbar instead of wrapping naturally.
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Parsers using a custom formatter that inherits from
RawDescriptionHelpFormatter(e.g. combining it withArgumentDefaultsHelpFormatter) had their epilog and description rendered as a single collapsed paragraph. The formatter check used exact equality (==) instead ofissubclass, so any subclass silently fell through to the plain-text path.Preformatted blocks (usage, epilog, description) also rendered with
white-space: prein HTML, causing long lines to overflow their container with a horizontal scrollbar. 🔧 A small injected CSS file now appliespre-wrapto these blocks so text wraps naturally while preserving newlines and indentation.