diff --git a/lisp/minibuffer.el b/lisp/minibuffer.el index 36b8d80841..5685f078ad 100644 --- a/lisp/minibuffer.el +++ b/lisp/minibuffer.el @@ -2227,6 +2312,8 @@ minibuffer-completion-help (let* ((last (last completions)) (base-size (or (cdr last) 0)) (prefix (unless (zerop base-size) (substring string 0 base-size))) + (base-prefix (buffer-substring (minibuffer--completion-prompt-end) (+ start base-size))) + (base-suffix (buffer-substring (point) (point-max))) (all-md (completion--metadata (buffer-substring-no-properties start (point)) base-size md @@ -2320,11 +2407,18 @@ minibuffer-completion-help ;; completion-all-completions does not give us the ;; necessary information. end)) + (setq-local completion-base-affixes (list base-prefix base-suffix)) (setq-local completion-list-insert-choice-function (let ((ctable minibuffer-completion-table) (cpred minibuffer-completion-predicate) (cprops completion-extra-properties)) (lambda (start end choice) + (if (and (stringp start) (stringp end)) + (progn + (delete-minibuffer-contents) + (insert start choice) + ;; Keep point after completion before suffix + (save-excursion (insert end))) (unless (or (zerop (length prefix)) (equal prefix (buffer-substring-no-properties @@ -2333,7 +2427,7 @@ minibuffer-completion-help start))) (message "*Completions* out of date")) ;; FIXME: Use `md' to do quoting&terminator here. - (completion--replace start end choice) + (completion--replace start end choice)) (let* ((minibuffer-completion-table ctable) (minibuffer-completion-predicate cpred) (completion-extra-properties cprops) diff --git a/lisp/simple.el b/lisp/simple.el index accc119e2b..52cf54c563 100644 --- a/lisp/simple.el +++ b/lisp/simple.el @@ -9071,6 +9075,19 @@ completion-base-position where the completion should be inserted and END (if non-nil) is the end of the text to replace. If END is nil, point is used instead.") +(defvar completion-base-affixes nil + "Base context of the text corresponding to the shown completions. +This variable is used in the *Completions* buffers. +Its value is a list of the form (PREFIX SUFFIX) where PREFIX is the text +before the place where completion should be inserted and SUFFIX is the text +after the completion.") + +(defcustom completion-use-base-affixes nil + "Non-nil means to restore original prefix and suffix in the minibuffer." + :type 'boolean + :version "29.1" + :group 'completion) + (defvar completion-list-insert-choice-function #'completion--replace "Function to use to insert the text chosen in *Completions*. Called with three arguments (BEG END TEXT), it should replace the text @@ -9151,6 +9168,7 @@ next-completion (with-current-buffer (window-buffer (posn-window (event-start event))) (let ((buffer completion-reference-buffer) (base-position completion-base-position) + (base-affixes completion-base-affixes) (insert-function completion-list-insert-choice-function) (choice (save-excursion @@ -9184,7 +9203,8 @@ choose-completion (with-current-buffer buffer (choose-completion-string choice buffer - (or base-position + (or (and completion-use-base-affixes base-affixes) + base-position ;; If all else fails, just guess. (list (choose-completion-guess-base-position choice))) insert-function))))) @@ -9344,9 +9372,11 @@ completion-setup-function (buffer-substring (minibuffer-prompt-end) (point))))))) (with-current-buffer standard-output (let ((base-position completion-base-position) + (base-affixes completion-base-affixes) (insert-fun completion-list-insert-choice-function)) (completion-list-mode) (setq-local completion-base-position base-position) + (setq-local completion-base-affixes base-affixes) (setq-local completion-list-insert-choice-function insert-fun)) (setq-local completion-reference-buffer mainbuf) (if base-dir (setq default-directory base-dir))