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authorBozhidar Batsov <bozhidar@toptal.com>2026-04-26 07:13:42 +0100
committerBozhidar Batsov <bozhidar@toptal.com>2026-04-26 07:13:42 +0100
commit67981d6d93b957edf3359d94f6216837427834bc (patch)
treea425158198f405ee313de72377bf698559406f53 /projectile.el
parent183023602f1002f39d6e5c82ca44a317d6b517fe (diff)
Skip cache for projectile-root-local (#1211)
projectile-root-local reads the buffer-local projectile-project-root variable rather than inspecting its DIR argument, so caching its result by (FUNC . DIR) was wrong: two buffers visiting the same directory but with different file-local overrides would share the first buffer's cached answer. Skip the cache for this function specifically - it's a single variable read, no FS work to amortize. Adds a regression test that visits two buffers with different file-local roots from the same default-directory and confirms each sees its own override.
Diffstat (limited to 'projectile.el')
-rw-r--r--projectile.el21
1 files changed, 13 insertions, 8 deletions
diff --git a/projectile.el b/projectile.el
index bcd8302..0530925 100644
--- a/projectile.el
+++ b/projectile.el
@@ -1478,16 +1478,21 @@ If DIR is not supplied it's set to the current directory by default."
(unless (or is-local is-connected)
'none))
;; if the file is local or we're connected to it via TRAMP, run
- ;; through the project root functions until we find a project dir
+ ;; through the project root functions until we find a project dir.
+ ;; `projectile-root-local' reads a buffer-local variable rather
+ ;; than inspecting DIR, so its result must not be cached - two
+ ;; buffers in the same directory can legitimately disagree.
(seq-some
(lambda (func)
- (let* ((cache-key (cons func dir))
- (cache-value (gethash cache-key projectile-project-root-cache)))
- (if (and cache-value (file-exists-p cache-value))
- cache-value
- (let ((value (funcall func (file-truename dir))))
- (puthash cache-key value projectile-project-root-cache)
- value))))
+ (if (eq func 'projectile-root-local)
+ (funcall func dir)
+ (let* ((cache-key (cons func dir))
+ (cache-value (gethash cache-key projectile-project-root-cache)))
+ (if (and cache-value (file-exists-p cache-value))
+ cache-value
+ (let ((value (funcall func (file-truename dir))))
+ (puthash cache-key value projectile-project-root-cache)
+ value)))))
projectile-project-root-functions)
;; if we get here, we have failed to find a root by all
;; conventional means, and we assume the failure isn't transient