From d8c1ac6c35f84000aedff67d60cd420360183019 Mon Sep 17 00:00:00 2001 From: Spencer Baugh Date: Thu, 16 Nov 2023 11:34:08 -0500 Subject: [PATCH] Return t from completion-emacs22-try-completion only for completions The emacs22 completion style ignores the text after point when computing completions. However, it still needs to take into account the entire string it's given, to avoid returning incorrect values. Previously, completion-emacs22-try-completion would return t if the text before point was an exact completion. But this is effectively saying that the entire input string was an exact completion, which may not be correct. This would cause completing-read with REQUIRE-MATCH=t to return a non-completion. Now, completion-emacs22-try-completion only returns t if the entire input string is an exact completion. * lisp/minibuffer.el (completion-emacs22-try-completion): Return t only if the entire input string is an exact completion. (Bug#67210) --- lisp/minibuffer.el | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/lisp/minibuffer.el b/lisp/minibuffer.el index 9ca3ecdf542..7af7a359674 100644 --- a/lisp/minibuffer.el +++ b/lisp/minibuffer.el @@ -3531,8 +3531,13 @@ Like `internal-complete-buffer', but removes BUFFER from the completion list." (defun completion-emacs22-try-completion (string table pred point) (let ((suffix (substring string point)) (completion (try-completion (substring string 0 point) table pred))) - (if (not (stringp completion)) - completion + (cond + ((eq completion t) + (if (equal "" suffix) + t + (cons string point))) + ((not (stringp completion)) completion) + (t ;; Merge a trailing / in completion with a / after point. ;; We used to only do it for word completion, but it seems to make ;; sense for all completions. @@ -3546,7 +3551,7 @@ Like `internal-complete-buffer', but removes BUFFER from the completion list." (eq ?/ (aref suffix 0))) ;; This leaves point after the / . (setq suffix (substring suffix 1))) - (cons (concat completion suffix) (length completion))))) + (cons (concat completion suffix) (length completion)))))) (defun completion-emacs22-all-completions (string table pred point) (let ((beforepoint (substring string 0 point))) -- 2.39.2