feat: support icon matching by filename prefix - #1228
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Add a new "prefix" section to the icon theme. A configured prefix is matched when a file name starts with it, falling back only after an exact name match and before an extension match. The longest matching prefix wins; ties are broken lexicographically. The default fancy theme now maps the "log" prefix to the existing log icon so that rotated log files like log.lsd.0 get the same icon as *.log files. Includes unit and integration tests. 🤖 Generated with [Claude Code](https://claude.com/claude-code)
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Closes #726
This PR adds support for matching icons by filename prefix in the icon theme.
A new
prefixsection can be added to an icon theme YAML file. When looking up an icon for a regular file, lsd now checks, in order:name)prefix)extension)The longest matching prefix wins; if several prefixes have the same length, the lexicographically first one is used so the result is deterministic.
The default fancy theme maps the
logprefix to the existing log icon, so rotated log files likelog.lsd.0orlog.2024-01-01are shown with the log icon instead of the generic file icon.Example custom theme snippet
Tests
log.lsd.0renders the log icon (\u{f18d}).🤖 Generated with Claude Code