mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-12-30 11:09:23 +00:00
78 lines
2.9 KiB
EmacsLisp
78 lines
2.9 KiB
EmacsLisp
;;; mb-depth.el --- Indicate minibuffer-depth in prompt
|
|
;;
|
|
;; Copyright (C) 2006-2015 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 <http://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:
|
|
|
|
(defvar minibuffer-depth-indicator-function nil
|
|
"If non-nil, function to set up the minibuffer depth indicator.
|
|
It is called with one argument, the minibuffer depth,
|
|
and must return a string.")
|
|
|
|
;; 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."
|
|
(when (> (minibuffer-depth) 1)
|
|
(setq minibuffer-depth-overlay (make-overlay (point-min) (1+ (point-min))))
|
|
(overlay-put minibuffer-depth-overlay 'before-string
|
|
(if minibuffer-depth-indicator-function
|
|
(funcall minibuffer-depth-indicator-function (minibuffer-depth))
|
|
(propertize (format "[%d]" (minibuffer-depth)) 'face 'highlight)))
|
|
(overlay-put minibuffer-depth-overlay 'evaporate t)))
|
|
|
|
;;;###autoload
|
|
(define-minor-mode minibuffer-depth-indicate-mode
|
|
"Toggle Minibuffer Depth Indication mode.
|
|
With a prefix argument ARG, enable Minibuffer Depth Indication
|
|
mode if ARG is positive, and disable it otherwise. If called
|
|
from Lisp, enable the mode if ARG is omitted or nil.
|
|
|
|
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
|