mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-11-24 07:20:37 +00:00
92 lines
3.4 KiB
EmacsLisp
92 lines
3.4 KiB
EmacsLisp
;;; mb-depth.el --- Indicate minibuffer-depth in prompt -*- lexical-binding: t -*-
|
|
;;
|
|
;; Copyright (C) 2006-2023 Free Software Foundation, Inc.
|
|
;;
|
|
;; Author: Miles Bader <miles@gnu.org>
|
|
;; Keywords: convenience
|
|
|
|
;; This file is part of GNU Emacs.
|
|
|
|
;; GNU Emacs is free software: you can redistribute it and/or modify
|
|
;; it under the terms of the GNU General Public License as published by
|
|
;; the Free Software Foundation, either version 3 of the License, or
|
|
;; (at your option) any later version.
|
|
|
|
;; GNU Emacs is distributed in the hope that it will be useful,
|
|
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
;; GNU General Public License for more details.
|
|
|
|
;; You should have received a copy of the GNU General Public License
|
|
;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
|
|
|
|
;;; Commentary:
|
|
;;
|
|
;; Defines the minor mode `minibuffer-depth-indicate-mode'.
|
|
;;
|
|
;; When active, any recursive use of the minibuffer will show
|
|
;; the recursion depth in the minibuffer prompt. This is only
|
|
;; useful if `enable-recursive-minibuffers' is non-nil.
|
|
|
|
;;; Code:
|
|
|
|
(defcustom minibuffer-depth-indicator-function nil
|
|
"If non-nil, a function to produce the minibuffer depth indicator.
|
|
The function will be called with one argument, the minibuffer depth,
|
|
and must return a string to display as indication of the minibuffer
|
|
depth.
|
|
If nil, display the depth as a number inside brackets, [NN], with
|
|
the `minibuffer-depth-indicator' face."
|
|
:version "28.1"
|
|
:type '(choice (const :tag "Default indicator display, [NN]" nil)
|
|
(function))
|
|
:group 'minibuffer)
|
|
|
|
(defface minibuffer-depth-indicator '((t :inherit highlight))
|
|
"Face to use for minibuffer depth indicator."
|
|
:group 'minibuffer
|
|
:version "28.1")
|
|
|
|
;; An overlay covering the prompt. This is a buffer-local variable in
|
|
;; each affected minibuffer.
|
|
;;
|
|
(defvar minibuffer-depth-overlay)
|
|
(make-variable-buffer-local 'minibuffer-depth-overlay)
|
|
|
|
;; This function goes on minibuffer-setup-hook
|
|
(defun minibuffer-depth-setup ()
|
|
"Set up a minibuffer for `minibuffer-depth-indicate-mode'.
|
|
The prompt should already have been inserted."
|
|
(let ((depth (minibuffer-depth)))
|
|
(when (> depth 1)
|
|
(let ((pos (point-min)))
|
|
(setq minibuffer-depth-overlay (make-overlay pos (1+ pos))))
|
|
(overlay-put minibuffer-depth-overlay 'before-string
|
|
(if minibuffer-depth-indicator-function
|
|
(funcall minibuffer-depth-indicator-function depth)
|
|
(concat (propertize (format "[%d]" depth)
|
|
'face
|
|
'minibuffer-depth-indicator)
|
|
" ")))
|
|
(overlay-put minibuffer-depth-overlay 'evaporate t))))
|
|
|
|
;;;###autoload
|
|
(define-minor-mode minibuffer-depth-indicate-mode
|
|
"Toggle Minibuffer Depth Indication mode.
|
|
|
|
Minibuffer Depth Indication mode is a global minor mode. When
|
|
enabled, any recursive use of the minibuffer will show the
|
|
recursion depth in the minibuffer prompt. This is only useful if
|
|
`enable-recursive-minibuffers' is non-nil."
|
|
:global t
|
|
:group 'minibuffer
|
|
(if minibuffer-depth-indicate-mode
|
|
;; Enable the mode
|
|
(add-hook 'minibuffer-setup-hook 'minibuffer-depth-setup)
|
|
;; Disable the mode
|
|
(remove-hook 'minibuffer-setup-hook 'minibuffer-depth-setup)))
|
|
|
|
(provide 'mb-depth)
|
|
|
|
;;; mb-depth.el ends here
|