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annotate contrib/mq.el @ 4429:3b0f73edee57

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mq.el: add mq-signoff, to sign off on a patch
author Bryan O'Sullivan <bos@serpentine.com>
date Tue, 08 May 2007 11:54:39 -0700
parents fa51e66117b4
children ea7b982b6c08
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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 (defcustom mq-edit-finish-hook nil
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40 "Hook run before a patch description is finished up with."
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41 :type 'sexp
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42 :group 'mercurial)
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43
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44 (defcustom mq-signoff-address nil
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45 "Address with which to sign off on a patch."
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46 :type 'string
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47 :group 'mercurial)
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48
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49
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50 ;;; Internal variables.
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51
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52 (defvar mq-mode nil
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53 "Is this file managed by MQ?")
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54 (make-variable-buffer-local 'mq-mode)
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55 (put 'mq-mode 'permanent-local t)
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56
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57 (defvar mq-patch-history nil)
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58
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59 (defvar mq-top-patch '(nil))
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60
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61 (defvar mq-prev-buffer nil)
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62 (make-variable-buffer-local 'mq-prev-buffer)
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63 (put 'mq-prev-buffer 'permanent-local t)
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64
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65
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66 ;;; Global keymap.
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67
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68 (defvar mq-global-map (make-sparse-keymap))
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69 (fset 'mq-global-map mq-global-map)
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70 (global-set-key mq-global-prefix 'mq-global-map)
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71 (define-key mq-global-map "." 'mq-push)
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72 (define-key mq-global-map ">" 'mq-push-all)
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73 (define-key mq-global-map "," 'mq-pop)
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74 (define-key mq-global-map "<" 'mq-pop-all)
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75 (define-key mq-global-map "=" 'mq-diff)
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76 (define-key mq-global-map "r" 'mq-refresh)
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77 (define-key mq-global-map "e" 'mq-refresh-edit)
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78 (define-key mq-global-map "i" 'mq-new)
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79 (define-key mq-global-map "n" 'mq-next)
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80 (define-key mq-global-map "o" 'mq-signoff)
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81 (define-key mq-global-map "p" 'mq-previous)
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82 (define-key mq-global-map "s" 'mq-edit-series)
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83 (define-key mq-global-map "t" 'mq-top)
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84
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85 (add-minor-mode 'mq-mode 'mq-mode)
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86
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87
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88 ;;; Refresh edit mode keymap.
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89
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90 (defvar mq-edit-mode-map (make-sparse-keymap))
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91 (define-key mq-edit-mode-map "\C-c\C-c" 'mq-edit-finish)
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92 (define-key mq-edit-mode-map "\C-c\C-k" 'mq-edit-kill)
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93 (define-key mq-edit-mode-map "\C-c\C-s" 'mq-signoff)
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94
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95
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96 ;;; Helper functions.
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97
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98 (defun mq-read-patch-name (&optional source prompt force)
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99 "Read a patch name to use with a command.
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100 May return nil, meaning \"use the default\"."
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101 (let ((patches (split-string
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102 (hg-chomp (hg-run0 (or source "qseries"))) "\n")))
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103 (when force
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104 (completing-read (format "Patch%s: " (or prompt ""))
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105 (map 'list 'cons patches patches)
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106 nil
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107 nil
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108 nil
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109 'mq-patch-history))))
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110
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111 (defun mq-refresh-buffers (root)
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112 (save-excursion
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113 (dolist (buf (hg-buffers-visiting-repo root))
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114 (when (not (verify-visited-file-modtime buf))
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115 (set-buffer buf)
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116 (let ((ctx (hg-buffer-context)))
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117 (message "Refreshing %s..." (buffer-name))
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118 (revert-buffer t t t)
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119 (hg-restore-context ctx)
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120 (message "Refreshing %s...done" (buffer-name))))))
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121 (hg-update-mode-lines root)
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122 (mq-update-mode-lines root))
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123
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124 (defun mq-last-line ()
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125 (goto-char (point-max))
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126 (beginning-of-line)
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127 (when (looking-at "^$")
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128 (forward-line -1))
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129 (let ((bol (point)))
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130 (end-of-line)
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131 (let ((line (buffer-substring bol (point))))
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132 (when (> (length line) 0)
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133 line))))
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134
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135 (defun mq-push (&optional patch)
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136 "Push patches until PATCH is reached.
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137 If PATCH is nil, push at most one patch."
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138 (interactive (list (mq-read-patch-name "qunapplied" " to push"
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139 current-prefix-arg)))
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140 (let ((root (hg-root))
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141 (prev-buf (current-buffer))
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142 last-line ok)
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143 (unless root
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144 (error "Cannot push outside a repository!"))
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145 (hg-sync-buffers root)
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146 (let ((buf-name (format "MQ: Push %s" (or patch "next patch"))))
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147 (kill-buffer (get-buffer-create buf-name))
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148 (split-window-vertically)
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149 (other-window 1)
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150 (switch-to-buffer (get-buffer-create buf-name))
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151 (cd root)
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152 (message "Pushing...")
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153 (setq ok (= 0 (apply 'call-process (hg-binary) nil t t "qpush"
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154 (if patch (list patch))))
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155 last-line (mq-last-line))
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156 (let ((lines (count-lines (point-min) (point-max))))
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157 (if (or (<= lines 1)
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158 (and (equal lines 2) (string-match "Now at:" last-line)))
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159 (progn
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160 (kill-buffer (current-buffer))
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161 (delete-window))
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162 (hg-view-mode prev-buf))))
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163 (mq-refresh-buffers root)
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164 (sit-for 0)
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165 (when last-line
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166 (if ok
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167 (message "Pushing... %s" last-line)
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168 (error "Pushing... %s" last-line)))))
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169
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170 (defun mq-push-all ()
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171 "Push patches until all are applied."
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172 (interactive)
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173 (mq-push "-a"))
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174
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175 (defun mq-pop (&optional patch)
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176 "Pop patches until PATCH is reached.
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177 If PATCH is nil, pop at most one patch."
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178 (interactive (list (mq-read-patch-name "qapplied" " to pop to"
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179 current-prefix-arg)))
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180 (let ((root (hg-root))
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181 last-line ok)
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182 (unless root
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183 (error "Cannot pop outside a repository!"))
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184 (hg-sync-buffers root)
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185 (set-buffer (generate-new-buffer "qpop"))
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186 (cd root)
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187 (message "Popping...")
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188 (setq ok (= 0 (apply 'call-process (hg-binary) nil t t "qpop"
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189 (if patch (list patch))))
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190 last-line (mq-last-line))
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191 (kill-buffer (current-buffer))
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192 (mq-refresh-buffers root)
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193 (sit-for 0)
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194 (when last-line
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195 (if ok
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196 (message "Popping... %s" last-line)
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197 (error "Popping... %s" last-line)))))
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198
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199 (defun mq-pop-all ()
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200 "Push patches until none are applied."
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201 (interactive)
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202 (mq-pop "-a"))
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203
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204 (defun mq-refresh-internal (root &rest args)
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205 (hg-sync-buffers root)
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206 (let ((patch (mq-patch-info "qtop")))
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207 (message "Refreshing %s..." patch)
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208 (let ((ret (apply 'hg-run "qrefresh" args)))
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209 (if (equal (car ret) 0)
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210 (message "Refreshing %s... done." patch)
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211 (error "Refreshing %s... %s" patch (hg-chomp (cdr ret)))))))
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212
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213 (defun mq-refresh (&optional git)
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214 "Refresh the topmost applied patch.
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215 With a prefix argument, generate a git-compatible patch."
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216 (interactive "P")
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217 (let ((root (hg-root)))
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218 (unless root
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219 (error "Cannot refresh outside of a repository!"))
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220 (apply 'mq-refresh-internal root (if git '("--git")))))
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221
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222 (defun mq-patch-info (cmd &optional msg)
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223 (let* ((ret (hg-run cmd))
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224 (info (hg-chomp (cdr ret))))
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225 (if (equal (car ret) 0)
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226 (if msg
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227 (message "%s patch: %s" msg info)
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228 info)
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229 (error "%s" info))))
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230
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231 (defun mq-top ()
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232 "Print the name of the topmost applied patch."
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233 (interactive)
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234 (mq-patch-info "qtop" "Top"))
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235
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236 (defun mq-next ()
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237 "Print the name of the next patch to be pushed."
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238 (interactive)
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239 (mq-patch-info "qnext" "Next"))
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240
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241 (defun mq-previous ()
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242 "Print the name of the first patch below the topmost applied patch.
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243 This would become the active patch if popped to."
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244 (interactive)
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245 (mq-patch-info "qprev" "Previous"))
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246
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247 (defun mq-edit-finish ()
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248 "Finish editing the description of this patch, and refresh the patch."
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249 (interactive)
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250 (unless (equal (mq-patch-info "qtop") mq-top)
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251 (error "Topmost patch has changed!"))
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252 (hg-sync-buffers hg-root)
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253 (run-hooks 'mq-edit-finish-hook)
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254 (mq-refresh-internal hg-root "-m" (buffer-substring (point-min) (point-max)))
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255 (let ((buf mq-prev-buffer))
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256 (kill-buffer nil)
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257 (switch-to-buffer buf)))
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258
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259 (defun mq-edit-kill ()
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260 "Kill the edit currently being prepared."
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261 (interactive)
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262 (when (or (not (buffer-modified-p)) (y-or-n-p "Really kill this edit? "))
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263 (let ((buf mq-prev-buffer))
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264 (kill-buffer nil)
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265 (switch-to-buffer buf))))
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266
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267 (defun mq-get-top (root)
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268 (let ((entry (assoc root mq-top-patch)))
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269 (if entry
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270 (cdr entry))))
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271
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272 (defun mq-set-top (root patch)
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273 (let ((entry (assoc root mq-top-patch)))
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274 (if entry
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275 (if patch
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276 (setcdr entry patch)
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277 (setq mq-top-patch (delq entry mq-top-patch)))
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278 (setq mq-top-patch (cons (cons root patch) mq-top-patch)))))
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279
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280 (defun mq-update-mode-lines (root)
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281 (let ((cwd default-directory))
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282 (cd root)
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283 (condition-case nil
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284 (mq-set-top root (mq-patch-info "qtop"))
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285 (error (mq-set-top root nil)))
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286 (cd cwd))
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287 (let ((patch (mq-get-top root)))
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288 (save-excursion
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289 (dolist (buf (hg-buffers-visiting-repo root))
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290 (set-buffer buf)
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291 (if mq-mode
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292 (setq mq-mode (or (and patch (concat " MQ:" patch)) " MQ")))))))
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293
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294 (defun mq-mode (&optional arg)
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295 "Minor mode for Mercurial repositories with an MQ patch queue"
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296 (interactive "i")
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297 (cond ((hg-root)
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298 (setq mq-mode (if (null arg) (not mq-mode)
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299 arg))
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300 (mq-update-mode-lines (hg-root))))
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301 (run-hooks 'mq-mode-hook))
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302
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303 (defun mq-edit-mode ()
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304 "Mode for editing the description of a patch.
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305
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306 Key bindings
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307 ------------
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308 \\[mq-edit-finish] use this description
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309 \\[mq-edit-kill] abandon this description"
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310 (interactive)
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311 (use-local-map mq-edit-mode-map)
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312 (set-syntax-table text-mode-syntax-table)
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313 (setq local-abbrev-table text-mode-abbrev-table
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314 major-mode 'mq-edit-mode
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315 mode-name "MQ-Edit")
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316 (set-buffer-modified-p nil)
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317 (setq buffer-undo-list nil)
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318 (run-hooks 'text-mode-hook 'mq-edit-mode-hook))
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319
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320 (defun mq-refresh-edit ()
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321 "Refresh the topmost applied patch, editing the patch description."
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322 (interactive)
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323 (while mq-prev-buffer
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324 (set-buffer mq-prev-buffer))
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325 (let ((root (hg-root))
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326 (prev-buffer (current-buffer))
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327 (patch (mq-patch-info "qtop")))
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328 (hg-sync-buffers root)
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329 (let ((buf-name (format "*MQ: Edit description of %s*" patch)))
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330 (switch-to-buffer (get-buffer-create buf-name))
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331 (when (= (point-min) (point-max))
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332 (set (make-local-variable 'hg-root) root)
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333 (set (make-local-variable 'mq-top) patch)
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334 (setq mq-prev-buffer prev-buffer)
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335 (insert (hg-run0 "qheader"))
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336 (goto-char (point-min)))
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diff changeset
337 (mq-edit-mode)
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338 (cd root)))
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339 (message "Type `C-c C-c' to finish editing and refresh the patch."))
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340
4422
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diff changeset
341 (defun mq-new (name)
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342 "Create a new empty patch named NAME.
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343 The patch is applied on top of the current topmost patch.
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344 With a prefix argument, forcibly create the patch even if the working
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diff changeset
345 directory is modified."
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346 (interactive (list (mq-read-patch-name "qseries" " to create" t)))
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347 (message "Creating patch...")
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348 (let ((ret (if current-prefix-arg
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349 (hg-run "qnew" "-f" name)
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350 (hg-run "qnew" name))))
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diff changeset
351 (if (equal (car ret) 0)
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diff changeset
352 (progn
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353 (hg-update-mode-lines (buffer-file-name))
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diff changeset
354 (message "Creating patch... done."))
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diff changeset
355 (error "Creating patch... %s" (hg-chomp (cdr ret))))))
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356
4423
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diff changeset
357 (defun mq-edit-series ()
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diff changeset
358 "Edit the MQ series file directly."
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diff changeset
359 (interactive)
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diff changeset
360 (let ((root (hg-root)))
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diff changeset
361 (unless root
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diff changeset
362 (error "Not in an MQ repository!"))
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diff changeset
363 (find-file (concat root ".hg/patches/series"))))
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diff changeset
364
4425
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diff changeset
365 (defun mq-diff (&optional git)
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diff changeset
366 "Display a diff of the topmost applied patch.
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diff changeset
367 With a prefix argument, display a git-compatible diff."
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diff changeset
368 (interactive "P")
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diff changeset
369 (hg-view-output ((format "MQ: Diff of %s" (mq-patch-info "qtop")))
4425
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diff changeset
370 (if git
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diff changeset
371 (call-process (hg-binary) nil t nil "qdiff" "--git")
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diff changeset
372 (call-process (hg-binary) nil t nil "qdiff"))
4424
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diff changeset
373 (diff-mode)
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diff changeset
374 (font-lock-fontify-buffer)))
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diff changeset
375
4429
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diff changeset
376 (defun mq-signoff ()
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diff changeset
377 "Sign off on the current patch, in the style used by the Linux kernel.
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diff changeset
378 If the variable mq-signoff-address is non-nil, it will be used, otherwise
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diff changeset
379 the value of the ui.username item from your hgrc will be used."
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380 (interactive)
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381 (let ((was-editing (eq major-mode 'mq-edit-mode))
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382 signed)
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383 (unless was-editing
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384 (mq-refresh-edit))
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385 (save-excursion
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386 (let* ((user (or mq-signoff-address
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387 (hg-run0 "debugconfig" "ui.username")))
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388 (signoff (concat "Signed-off-by: " user)))
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389 (if (search-forward signoff nil t)
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390 (message "You have already signed off on this patch.")
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391 (goto-char (point-max))
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392 (let ((case-fold-search t))
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393 (if (re-search-backward "^Signed-off-by: " nil t)
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394 (forward-line 1)
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395 (insert "\n")))
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396 (insert signoff)
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397 (message "%s" signoff)
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398 (setq signed t))))
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399 (unless was-editing
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400 (if signed
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401 (mq-edit-finish)
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402 (mq-edit-kill)))))
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403
2993
425413d9ef59 Emacs: add mq.el, early support for Mercurial Queues.
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404
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405 (provide 'mq)
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406
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407
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408 ;;; Local Variables:
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409 ;;; prompt-to-byte-compile: nil
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410 ;;; end: