branch: externals/corfu
commit c1870977f6a9107cef59c482446fca60991dfd4b
Author: Daniel Mendler <m...@daniel-mendler.de>
Commit: Daniel Mendler <m...@daniel-mendler.de>
Workaround for bug#50470: Fix misbehaving Capfs
- Ensure that Capfs do not manipulate the buffer
- Redirect illegal calls to completion-in-region
---
corfu.el | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/corfu.el b/corfu.el
index a36d119..0b5cc91 100644
--- a/corfu.el
+++ b/corfu.el
@@ -1153,7 +1153,19 @@ there hasn't been any input, then quit."
(defun corfu--capf-wrapper (fun)
"Wrapper for `completion-at-point' FUN.
Determines if the capf is applicable at the current position."
- (pcase (funcall fun)
+ (pcase
+ ;; bug#50470: Fix Capfs which illegally modify the buffer
+ ;; or which illegally call `completion-in-region'
+ (catch 'corfu--illegal-completion-in-region
+ (condition-case nil
+ (let ((buffer-read-only t)
+ (inhibit-read-only nil)
+ (completion-in-region-function
+ (lambda (beg end coll pred)
+ (throw 'corfu--illegal-completion-in-region
+ (list beg end coll :predicate pred)))))
+ (funcall fun))
+ (buffer-read-only nil)))
((and res `(,beg ,end ,table . ,plist))
(and (integer-or-marker-p beg) ;; Valid capf result
(<= beg (point) end) ;; Sanity checking
