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60370d40 | 1 | ;;; em-prompt.el --- command prompts |
affbf647 | 2 | |
faadfb0a | 3 | ;; Copyright (C) 1999, 2000 Free Software Foundation |
affbf647 | 4 | |
7de5b421 GM |
5 | ;; Author: John Wiegley <johnw@gnu.org> |
6 | ||
affbf647 GM |
7 | ;; This file is part of GNU Emacs. |
8 | ||
9 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
10 | ;; it under the terms of the GNU General Public License as published by | |
11 | ;; the Free Software Foundation; either version 2, or (at your option) | |
12 | ;; any later version. | |
13 | ||
14 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
15 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | ;; GNU General Public License for more details. | |
18 | ||
19 | ;; You should have received a copy of the GNU General Public License | |
20 | ;; along with GNU Emacs; see the file COPYING. If not, write to the | |
21 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
22 | ;; Boston, MA 02111-1307, USA. | |
23 | ||
24 | (provide 'em-prompt) | |
25 | ||
26 | (eval-when-compile (require 'esh-maint)) | |
27 | ||
28 | (defgroup eshell-prompt nil | |
29 | "This module provides command prompts, and navigation between them, | |
30 | as is common with most shells." | |
31 | :tag "Command prompts" | |
32 | :group 'eshell-module) | |
33 | ||
34 | ;;; Commentary: | |
35 | ||
36 | ;; Most of the prompt navigation commands of `comint-mode' are | |
37 | ;; supported, such as C-c C-n, C-c C-p, etc. | |
38 | ||
39 | ;;; User Variables: | |
40 | ||
41 | (defcustom eshell-prompt-load-hook '(eshell-prompt-initialize) | |
42 | "*A list of functions to call when loading `eshell-prompt'." | |
43 | :type 'hook | |
44 | :group 'eshell-prompt) | |
45 | ||
46 | (defcustom eshell-prompt-function | |
47 | (function | |
48 | (lambda () | |
49 | (concat (eshell/pwd) | |
50 | (if (= (user-uid) 0) " # " " $ ")))) | |
51 | "*A function that returns the Eshell prompt string. | |
52 | Make sure to update `eshell-prompt-regexp' so that it will match your | |
53 | prompt." | |
54 | :type 'function | |
55 | :group 'eshell-prompt) | |
56 | ||
57 | (defcustom eshell-prompt-regexp "^[^#$\n]* [#$] " | |
58 | "*A regexp which fully matches your eshell prompt. | |
59 | This setting is important, since it affects how eshell will interpret | |
60 | the lines that are passed to it. | |
61 | If this variable is changed, all Eshell buffers must be exited and | |
62 | re-entered for it to take effect." | |
63 | :type 'regexp | |
64 | :group 'eshell-prompt) | |
65 | ||
66 | (defcustom eshell-highlight-prompt t | |
67 | "*If non-nil, Eshell should highlight the prompt." | |
68 | :type 'boolean | |
69 | :group 'eshell-prompt) | |
70 | ||
71 | (defface eshell-prompt-face | |
72 | '((((class color) (background light)) (:foreground "Red" :bold t)) | |
73 | (((class color) (background dark)) (:foreground "Pink" :bold t)) | |
74 | (t (:bold t))) | |
75 | "*The face used to highlight prompt strings. | |
76 | For highlighting other kinds of strings -- similar to shell mode's | |
77 | behavior -- simply use an output filer which changes text properties." | |
78 | :group 'eshell-prompt) | |
79 | ||
80 | (defcustom eshell-before-prompt-hook nil | |
81 | "*A list of functions to call before outputting the prompt." | |
82 | :type 'hook | |
83 | :options '(eshell-begin-on-new-line) | |
84 | :group 'eshell-prompt) | |
85 | ||
86 | (defcustom eshell-after-prompt-hook nil | |
87 | "*A list of functions to call after outputting the prompt. | |
88 | Note that if `eshell-scroll-show-maximum-output' is non-nil, then | |
89 | setting `eshell-show-maximum-output' here won't do much. It depends | |
90 | on whether the user wants the resizing to happen while output is | |
91 | arriving, or after." | |
92 | :type 'hook | |
93 | :options '(eshell-show-maximum-output) | |
94 | :group 'eshell-prompt) | |
95 | ||
96 | ;;; Functions: | |
97 | ||
98 | (defun eshell-prompt-initialize () | |
99 | "Initialize the prompting code." | |
100 | (unless eshell-non-interactive-p | |
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101 | (add-hook 'eshell-post-command-hook 'eshell-emit-prompt nil t) |
102 | ||
103 | (make-local-variable 'eshell-prompt-regexp) | |
104 | (if eshell-prompt-regexp | |
105 | (set (make-local-variable 'paragraph-start) eshell-prompt-regexp)) | |
106 | ||
107 | (set (make-local-variable 'eshell-skip-prompt-function) | |
108 | 'eshell-skip-prompt) | |
109 | ||
110 | (define-key eshell-command-map [(control ?n)] 'eshell-next-prompt) | |
111 | (define-key eshell-command-map [(control ?p)] 'eshell-previous-prompt))) | |
112 | ||
113 | (defun eshell-emit-prompt () | |
114 | "Emit a prompt if eshell is being used interactively." | |
115 | (run-hooks 'eshell-before-prompt-hook) | |
116 | (if (not eshell-prompt-function) | |
117 | (set-marker eshell-last-output-end (point)) | |
118 | (let ((prompt (funcall eshell-prompt-function))) | |
119 | (and eshell-highlight-prompt | |
120 | (add-text-properties 0 (length prompt) | |
121 | '(read-only t | |
122 | face eshell-prompt-face | |
123 | rear-nonsticky (face read-only)) | |
124 | prompt)) | |
125 | (eshell-interactive-print prompt))) | |
126 | (run-hooks 'eshell-after-prompt-hook)) | |
127 | ||
128 | (defun eshell-backward-matching-input (regexp arg) | |
129 | "Search backward through buffer for match for REGEXP. | |
130 | Matches are searched for on lines that match `eshell-prompt-regexp'. | |
131 | With prefix argument N, search for Nth previous match. | |
132 | If N is negative, find the next or Nth next match." | |
133 | (interactive (eshell-regexp-arg "Backward input matching (regexp): ")) | |
134 | (let* ((re (concat eshell-prompt-regexp ".*" regexp)) | |
135 | (pos (save-excursion (end-of-line (if (> arg 0) 0 1)) | |
136 | (if (re-search-backward re nil t arg) | |
137 | (point))))) | |
138 | (if (null pos) | |
139 | (progn (message "Not found") | |
140 | (ding)) | |
141 | (goto-char pos) | |
142 | (eshell-bol)))) | |
143 | ||
144 | (defun eshell-forward-matching-input (regexp arg) | |
145 | "Search forward through buffer for match for REGEXP. | |
146 | Matches are searched for on lines that match `eshell-prompt-regexp'. | |
147 | With prefix argument N, search for Nth following match. | |
148 | If N is negative, find the previous or Nth previous match." | |
149 | (interactive (eshell-regexp-arg "Forward input matching (regexp): ")) | |
150 | (eshell-backward-matching-input regexp (- arg))) | |
151 | ||
152 | (defun eshell-next-prompt (n) | |
153 | "Move to end of Nth next prompt in the buffer. | |
154 | See `eshell-prompt-regexp'." | |
155 | (interactive "p") | |
156 | (forward-paragraph n) | |
157 | (eshell-skip-prompt)) | |
158 | ||
159 | (defun eshell-previous-prompt (n) | |
160 | "Move to end of Nth previous prompt in the buffer. | |
161 | See `eshell-prompt-regexp'." | |
162 | (interactive "p") | |
163 | (eshell-next-prompt (- (1+ n)))) | |
164 | ||
165 | (defun eshell-skip-prompt () | |
166 | "Skip past the text matching regexp `eshell-prompt-regexp'. | |
167 | If this takes us past the end of the current line, don't skip at all." | |
168 | (let ((eol (line-end-position))) | |
169 | (if (and (looking-at eshell-prompt-regexp) | |
170 | (<= (match-end 0) eol)) | |
171 | (goto-char (match-end 0))))) | |
172 | ||
173 | ;;; Code: | |
174 | ||
ab5796a9 | 175 | ;;; arch-tag: 01c1574b-ce70-4e89-bc38-e6619f61e208 |
affbf647 | 176 | ;;; em-prompt.el ends here |