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-rw-r--r--lisp/emacs-lisp/autoload.el4
1 files changed, 3 insertions, 1 deletions
diff --git a/lisp/emacs-lisp/autoload.el b/lisp/emacs-lisp/autoload.el
index 90e6aec4e75..ca46f317677 100644
--- a/lisp/emacs-lisp/autoload.el
+++ b/lisp/emacs-lisp/autoload.el
@@ -547,7 +547,9 @@ Don't try to split prefixes that are already longer than that.")
;; "cc-helper" and "c-mode", you'll get "c" in the root prefixes.
(dolist (pair (prog1 prefixes (setq prefixes nil)))
(let ((s (car pair)))
- (if (or (> (length s) 2) ;Long enough!
+ (if (or (and (> (length s) 2) ; Long enough!
+ ;; But don't use "def" from deffoo-pkg-thing.
+ (not (string= "def" s)))
(string-match ".[[:punct:]]\\'" s) ;A real (tho short) prefix?
(radix-tree-lookup (cdr pair) "")) ;Nothing to expand!
(push pair prefixes) ;Keep it as is.