The sort toggle ordered rows by counts, recency, and path; the row's own
last segment — the bold name a reader scans for — had no order of its
own, so same-named files in different directories never grouped. Name
leads on the displayed last segment (either separator style, via the
shared leafNameOf) and the full path breaks ties between rows that share
a name.
The Preferences picker, the host Config union, the shared
DefaultFileSort vocabulary, and both dictionaries carry the fourth
option; glyphOf now reuses the same leaf helper instead of its own split.
bowenliang123
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