[5.6][swift-stdlib-tool] Fix finding sibling directories #41262
Merged
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When used without passing
--source-libraries
, this tool fetches itscurrent path and uses that to find the directories of the swift
libraries near it.
Since #39216 it was searching the
nearby directories recursively, and only for files, instead of just
looking at 1 level, only for directories. Because of this it would never
discover
path/to/lib/swift-5.0/...
because it was only looking forfiles.
This fixes this issue with a new function, and renames the previous
function to be more explicit for the other use case that does want that
behavior.
(cherry picked from commit d1eabf1)