Coalesce idle-timer flushes in projectile-cache-current-fileHEADmaster

Each call to `projectile-cache-current-file' under persistent caching
scheduled a fresh 30-second idle timer that closed over a snapshot of
the file list at scheduling time.  Opening N files in a session
queued N timers; once Emacs went idle they all fired and serialized
the cache N times, with the earlier ones writing stale (shorter)
lists.

Maintain a per-project pending timer in
`projectile--pending-cache-flush-timers' instead, cancelling and
rescheduling on each new file.  The fired callback re-reads the
current in-memory cache, so the disk write reflects the final state
rather than whichever snapshot the last timer captured.

0 files changed, 0 insertions, 0 deletions