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Render trailing spaces and tabs in diff additions, deletions, and context lines with a red background by default, similar to git's diff.wsErrorHighlight = all (old,new,context). See git-diff(1). The style is configurable with the diff_whitespace styleset option. Changelog-added: Trailing whitespace in diff addition, deletion and context lines are now highlighted with a red background by default, similar to git's `diff.wsErrorHighlight` option set to `all`. Configurable with `[viewer].diff_whitespace` styleset option. Signed-off-by: Fredrik Foss-Indrehus <fredrik@ffoss.net> Acked-by: Robin Jarry <robin@jarry.cc>