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annotate contrib/mq.el @ 2996:06696f9c30c0

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mq.el: Add comment to mq-edit-finish.
author Bryan O'Sullivan <bos@serpentine.com>
date Tue, 22 Aug 2006 17:01:24 -0700
parents e2bad806ccc3
children b7fe334ff4fb
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 ;;; mq.el --- Emacs support for Mercurial Queues
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2
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3 ;; Copyright (C) 2006 Bryan O'Sullivan
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4
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5 ;; Author: Bryan O'Sullivan <bos@serpentine.com>
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6
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7 ;; mq.el is free software; you can redistribute it and/or modify it
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8 ;; under the terms of version 2 of the GNU General Public License as
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9 ;; published by the Free Software Foundation.
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10
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11 ;; mq.el is distributed in the hope that it will be useful, but
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12 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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13 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 ;; General Public License for more details.
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15
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16 ;; You should have received a copy of the GNU General Public License
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17 ;; along with mq.el, GNU Emacs, or XEmacs; see the file COPYING (`C-h
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18 ;; C-l'). If not, write to the Free Software Foundation, Inc., 59
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19 ;; Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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20
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21 (require 'mercurial)
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22
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23
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24 (defcustom mq-mode-hook nil
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25 "Hook run when a buffer enters mq-mode."
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26 :type 'sexp
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27 :group 'mercurial)
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28
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29 (defcustom mq-global-prefix "\C-cq"
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30 "The global prefix for Mercurial Queues keymap bindings."
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31 :type 'sexp
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32 :group 'mercurial)
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33
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34 (defcustom mq-edit-mode-hook nil
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35 "Hook run after a buffer is populated to edit a patch description."
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36 :type 'sexp
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37 :group 'mercurial)
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38
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39
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40 ;;; Internal variables.
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41
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42 (defvar mq-patch-history nil)
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43
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44 (defvar mq-prev-buffer nil)
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45 (make-variable-buffer-local 'mq-prev-buffer)
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46 (put 'mq-prev-buffer 'permanent-local t)
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47
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48
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49 ;;; Global keymap.
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50
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51 (defvar mq-global-map (make-sparse-keymap))
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52 (fset 'mq-global-map mq-global-map)
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53 (global-set-key mq-global-prefix 'mq-global-map)
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54 (define-key mq-global-map "." 'mq-push)
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55 (define-key mq-global-map ">" 'mq-push-all)
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56 (define-key mq-global-map "," 'mq-pop)
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57 (define-key mq-global-map "<" 'mq-pop-all)
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58 (define-key mq-global-map "r" 'mq-refresh)
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59 (define-key mq-global-map "e" 'mq-refresh-edit)
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60 (define-key mq-global-map "n" 'mq-next)
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61 (define-key mq-global-map "p" 'mq-previous)
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62 (define-key mq-global-map "t" 'mq-top)
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63
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64
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65 ;;; Refresh edit mode keymap.
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66
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67 (defvar mq-edit-mode-map (make-sparse-keymap))
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68 (define-key mq-edit-mode-map "\C-c\C-c" 'mq-edit-finish)
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69 (define-key mq-edit-mode-map "\C-c\C-k" 'mq-edit-kill)
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70
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71
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72 ;;; Helper functions.
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73
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74 (defun mq-read-patch-name (&optional source prompt)
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75 "Read a patch name to use with a command.
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76 May return nil, meaning \"use the default\"."
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77 (let ((patches (split-string
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78 (hg-chomp (hg-run0 (or source "qseries"))) "\n")))
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79 (when current-prefix-arg
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80 (completing-read (format "Patch%s: " (or prompt ""))
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81 (map 'list 'cons patches patches)
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82 nil
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83 nil
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84 nil
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85 'mq-patch-history))))
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86
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87 (defun mq-refresh-buffers (root)
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88 (save-excursion
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89 (dolist (buf (hg-buffers-visiting-repo root))
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90 (when (not (verify-visited-file-modtime buf))
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91 (set-buffer buf)
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92 (let ((ctx (hg-buffer-context)))
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93 (message "Refreshing %s..." (buffer-name))
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94 (revert-buffer t t t)
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95 (hg-restore-context ctx)
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96 (message "Refreshing %s...done" (buffer-name))))))
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97 (hg-update-mode-lines root))
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98
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99 (defun mq-last-line ()
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100 (goto-char (point-max))
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101 (beginning-of-line)
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102 (when (looking-at "^$")
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103 (forward-line -1))
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104 (let ((bol (point)))
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105 (end-of-line)
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106 (let ((line (buffer-substring bol (point))))
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107 (when (> (length line) 0)
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108 line))))
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109
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110 (defun mq-push (&optional patch)
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111 "Push patches until PATCH is reached.
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112 If PATCH is nil, push at most one patch."
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113 (interactive (list (mq-read-patch-name "qunapplied" " to push")))
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114 (let ((root (hg-root))
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115 (prev-buf (current-buffer))
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116 last-line ok)
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117 (unless root
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118 (error "Cannot push outside a repository!"))
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119 (hg-sync-buffers root)
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120 (let ((buf-name (format "MQ: Push %s" (or patch "next patch"))))
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121 (kill-buffer (get-buffer-create buf-name))
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122 (split-window-vertically)
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123 (other-window 1)
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124 (switch-to-buffer (get-buffer-create buf-name))
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125 (cd root)
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126 (message "Pushing...")
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127 (setq ok (= 0 (apply 'call-process (hg-binary) nil t t "qpush"
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128 (if patch (list patch))))
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129 last-line (mq-last-line))
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130 (let ((lines (count-lines (point-min) (point-max))))
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131 (if (and (equal lines 2) (string-match "Now at:" last-line))
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132 (progn
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133 (kill-buffer (current-buffer))
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134 (delete-window))
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135 (hg-view-mode prev-buf))))
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136 (mq-refresh-buffers root)
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137 (sit-for 0)
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138 (when last-line
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139 (if ok
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140 (message "Pushing... %s" last-line)
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141 (error "Pushing... %s" last-line)))))
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142
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143 (defun mq-push-all ()
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144 "Push patches until all are applied."
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145 (interactive)
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146 (mq-push "-a"))
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147
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148 (defun mq-pop (&optional patch)
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149 "Pop patches until PATCH is reached.
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150 If PATCH is nil, pop at most one patch."
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151 (interactive (list (mq-read-patch-name "qapplied" " to pop to")))
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152 (let ((root (hg-root))
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153 last-line ok)
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154 (unless root
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155 (error "Cannot pop outside a repository!"))
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156 (hg-sync-buffers root)
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157 (set-buffer (generate-new-buffer "qpop"))
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158 (cd root)
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159 (message "Popping...")
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160 (setq ok (= 0 (apply 'call-process (hg-binary) nil t t "qpop"
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161 (if patch (list patch))))
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162 last-line (mq-last-line))
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163 (kill-buffer (current-buffer))
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164 (mq-refresh-buffers root)
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165 (sit-for 0)
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166 (when last-line
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167 (if ok
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168 (message "Popping... %s" last-line)
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169 (error "Popping... %s" last-line)))))
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170
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171 (defun mq-pop-all ()
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172 "Push patches until none are applied."
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173 (interactive)
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174 (mq-pop "-a"))
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175
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176 (defun mq-refresh-internal (root &rest args)
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177 (hg-sync-buffers root)
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178 (let ((patch (mq-patch-info "qtop")))
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179 (message "Refreshing %s..." patch)
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180 (let ((ret (apply 'hg-run "qrefresh" args)))
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181 (if (equal (car ret) 0)
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182 (message "Refreshing %s... done." patch)
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183 (error "Refreshing %s... %s" patch (hg-chomp (cdr ret)))))))
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184
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185 (defun mq-refresh ()
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186 "Refresh the topmost applied patch."
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187 (interactive)
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188 (let ((root (hg-root)))
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189 (unless root
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190 (error "Cannot refresh outside of a repository!"))
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191 (mq-refresh-internal root)))
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192
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193 (defun mq-patch-info (cmd &optional msg)
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194 (let* ((ret (hg-run cmd))
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195 (info (hg-chomp (cdr ret))))
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196 (if (equal (car ret) 0)
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197 (if msg
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198 (message "%s patch: %s" msg info)
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199 info)
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200 (error "%s" info))))
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201
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202 (defun mq-top ()
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203 "Print the name of the topmost applied patch."
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204 (interactive)
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205 (mq-patch-info "qtop" "Top"))
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206
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207 (defun mq-next ()
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208 "Print the name of the next patch to be pushed."
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209 (interactive)
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210 (mq-patch-info "qnext" "Next"))
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211
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212 (defun mq-previous ()
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213 "Print the name of the first patch below the topmost applied patch.
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214 This would become the active patch if popped to."
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215 (interactive)
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216 (mq-patch-info "qprev" "Previous"))
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217
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218 (defun mq-edit-finish ()
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219 "Finish editing the description of this patch, and refresh the patch."
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220 (interactive)
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221 (unless (equal (mq-patch-info "qtop") mq-top)
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222 (error "Topmost patch has changed!"))
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223 (hg-sync-buffers hg-root)
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224 (mq-refresh-internal hg-root "-m" (buffer-substring (point-min) (point-max)))
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225 (let ((buf mq-prev-buffer))
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226 (kill-buffer nil)
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227 (switch-to-buffer buf)))
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228
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229 (defun mq-edit-kill ()
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230 "Kill the edit currently being prepared."
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231 (interactive)
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232 (when (or (not (buffer-modified-p)) (y-or-n-p "Really kill this edit? "))
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233 (let ((buf mq-prev-buffer))
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234 (kill-buffer nil)
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235 (switch-to-buffer buf))))
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236
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237 (defun mq-edit-mode ()
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238 "Mode for editing the description of a patch.
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239
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240 Key bindings
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241 ------------
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242 \\[mq-edit-finish] use this description
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243 \\[mq-edit-kill] abandon this description"
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244 (interactive)
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245 (use-local-map mq-edit-mode-map)
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246 (set-syntax-table text-mode-syntax-table)
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247 (setq local-abbrev-table text-mode-abbrev-table
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248 major-mode 'mq-edit-mode
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249 mode-name "MQ-Edit")
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250 (set-buffer-modified-p nil)
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251 (setq buffer-undo-list nil)
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252 (run-hooks 'text-mode-hook 'mq-edit-mode-hook))
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253
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254 (defun mq-refresh-edit ()
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255 "Refresh the topmost applied patch, editing the patch description."
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256 (interactive)
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257 (while mq-prev-buffer
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258 (set-buffer mq-prev-buffer))
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259 (let ((root (hg-root))
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260 (prev-buffer (current-buffer))
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261 (patch (mq-patch-info "qtop")))
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262 (hg-sync-buffers root)
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263 (let ((buf-name (format "*MQ: Edit description of %s*" patch)))
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264 (switch-to-buffer (get-buffer-create buf-name))
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265 (when (= (point-min) (point-max))
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266 (set (make-local-variable 'hg-root) root)
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267 (set (make-local-variable 'mq-top) patch)
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268 (setq mq-prev-buffer prev-buffer)
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269 (insert (hg-run0 "qheader"))
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270 (goto-char (point-min)))
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271 (mq-edit-mode)
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272 (cd root)))
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273 (message "Type `C-c C-c' to finish editing and refresh the patch."))
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274
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275
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276 (provide 'mq)
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277
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278
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279 ;;; Local Variables:
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280 ;;; prompt-to-byte-compile: nil
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281 ;;; end: