-CSS classes
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-
- span.q - quoted text in email messages
-
-For diff highlighting, we try to match class names with those
-used by cgit: https://git.zx2c4.com/cgit/
-
- span.add - diff post-image lines
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- span.del - diff pre-image lines
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- span.head - diff header (metainformation)
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- span.hunk - diff hunk-header
-