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annotate contrib/mq.el @ 5468:24eb1bf8dd83

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mq.el: define keymaps as convensions
author NIIMI Satoshi <sa2c@sa2c.net>
date Thu, 11 Oct 2007 06:13:17 +0900
parents 87860c62e003
children
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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 (eval-when-compile (require 'cl))
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22 (require 'mercurial)
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23
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24
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25 (defcustom mq-mode-hook nil
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26 "Hook run when a buffer enters mq-mode."
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27 :type 'sexp
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28 :group 'mercurial)
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29
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30 (defcustom mq-global-prefix "\C-cq"
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31 "The global prefix for Mercurial Queues keymap bindings."
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32 :type 'sexp
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33 :group 'mercurial)
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34
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35 (defcustom mq-edit-mode-hook nil
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36 "Hook run after a buffer is populated to edit a patch description."
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37 :type 'sexp
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38 :group 'mercurial)
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39
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40 (defcustom mq-edit-finish-hook nil
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41 "Hook run before a patch description is finished up with."
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42 :type 'sexp
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43 :group 'mercurial)
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44
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45 (defcustom mq-signoff-address nil
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46 "Address with which to sign off on a patch."
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47 :type 'string
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48 :group 'mercurial)
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49
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50
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51 ;;; Internal variables.
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52
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53 (defvar mq-mode nil
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54 "Is this file managed by MQ?")
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55 (make-variable-buffer-local 'mq-mode)
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56 (put 'mq-mode 'permanent-local t)
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57
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58 (defvar mq-patch-history nil)
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59
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60 (defvar mq-top-patch '(nil))
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61
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62 (defvar mq-prev-buffer nil)
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63 (make-variable-buffer-local 'mq-prev-buffer)
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64 (put 'mq-prev-buffer 'permanent-local t)
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65
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66 (defvar mq-top nil)
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67 (make-variable-buffer-local 'mq-top)
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68 (put 'mq-top 'permanent-local t)
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69
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70 ;;; Global keymap.
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71
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72 (defvar mq-global-map
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73 (let ((map (make-sparse-keymap)))
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74 (define-key map "." 'mq-push)
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75 (define-key map ">" 'mq-push-all)
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76 (define-key map "," 'mq-pop)
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77 (define-key map "<" 'mq-pop-all)
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78 (define-key map "=" 'mq-diff)
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79 (define-key map "r" 'mq-refresh)
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80 (define-key map "e" 'mq-refresh-edit)
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81 (define-key map "i" 'mq-new)
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82 (define-key map "n" 'mq-next)
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83 (define-key map "o" 'mq-signoff)
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84 (define-key map "p" 'mq-previous)
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85 (define-key map "s" 'mq-edit-series)
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86 (define-key map "t" 'mq-top)
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87 map))
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88
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89 (global-set-key mq-global-prefix mq-global-map)
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90
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91 (add-minor-mode 'mq-mode 'mq-mode)
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92
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93
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94 ;;; Refresh edit mode keymap.
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95
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96 (defvar mq-edit-mode-map
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97 (let ((map (make-sparse-keymap)))
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98 (define-key map "\C-c\C-c" 'mq-edit-finish)
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99 (define-key map "\C-c\C-k" 'mq-edit-kill)
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100 (define-key map "\C-c\C-s" 'mq-signoff)
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101 map))
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102
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103
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104 ;;; Helper functions.
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105
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106 (defun mq-read-patch-name (&optional source prompt force)
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107 "Read a patch name to use with a command.
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108 May return nil, meaning \"use the default\"."
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109 (let ((patches (split-string
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110 (hg-chomp (hg-run0 (or source "qseries"))) "\n")))
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111 (when force
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112 (completing-read (format "Patch%s: " (or prompt ""))
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113 (mapcar (lambda (x) (cons x x)) patches)
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114 nil
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115 nil
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116 nil
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117 'mq-patch-history))))
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118
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119 (defun mq-refresh-buffers (root)
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120 (save-excursion
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121 (dolist (buf (hg-buffers-visiting-repo root))
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122 (when (not (verify-visited-file-modtime buf))
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123 (set-buffer buf)
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124 (let ((ctx (hg-buffer-context)))
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125 (message "Refreshing %s..." (buffer-name))
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126 (revert-buffer t t t)
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127 (hg-restore-context ctx)
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128 (message "Refreshing %s...done" (buffer-name))))))
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129 (hg-update-mode-lines root)
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130 (mq-update-mode-lines root))
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131
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132 (defun mq-last-line ()
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133 (goto-char (point-max))
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134 (beginning-of-line)
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135 (when (looking-at "^$")
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136 (forward-line -1))
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137 (let ((bol (point)))
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138 (end-of-line)
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139 (let ((line (buffer-substring bol (point))))
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140 (when (> (length line) 0)
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141 line))))
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142
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143 (defun mq-push (&optional patch)
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144 "Push patches until PATCH is reached.
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145 If PATCH is nil, push at most one patch."
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146 (interactive (list (mq-read-patch-name "qunapplied" " to push"
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147 current-prefix-arg)))
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148 (let ((root (hg-root))
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149 (prev-buf (current-buffer))
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150 last-line ok)
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151 (unless root
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152 (error "Cannot push outside a repository!"))
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153 (hg-sync-buffers root)
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154 (let ((buf-name (format "MQ: Push %s" (or patch "next patch"))))
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155 (kill-buffer (get-buffer-create buf-name))
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156 (split-window-vertically)
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157 (other-window 1)
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158 (switch-to-buffer (get-buffer-create buf-name))
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159 (cd root)
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160 (message "Pushing...")
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161 (setq ok (= 0 (apply 'call-process (hg-binary) nil t t "qpush"
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162 (if patch (list patch))))
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163 last-line (mq-last-line))
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164 (let ((lines (count-lines (point-min) (point-max))))
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165 (if (or (<= lines 1)
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166 (and (equal lines 2) (string-match "Now at:" last-line)))
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167 (progn
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168 (kill-buffer (current-buffer))
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169 (delete-window))
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170 (hg-view-mode prev-buf))))
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171 (mq-refresh-buffers root)
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172 (sit-for 0)
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173 (when last-line
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174 (if ok
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175 (message "Pushing... %s" last-line)
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176 (error "Pushing... %s" last-line)))))
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177
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178 (defun mq-push-all ()
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179 "Push patches until all are applied."
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180 (interactive)
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181 (mq-push "-a"))
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182
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183 (defun mq-pop (&optional patch)
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184 "Pop patches until PATCH is reached.
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185 If PATCH is nil, pop at most one patch."
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186 (interactive (list (mq-read-patch-name "qapplied" " to pop to"
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187 current-prefix-arg)))
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188 (let ((root (hg-root))
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189 last-line ok)
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190 (unless root
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191 (error "Cannot pop outside a repository!"))
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192 (hg-sync-buffers root)
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193 (set-buffer (generate-new-buffer "qpop"))
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194 (cd root)
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195 (message "Popping...")
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196 (setq ok (= 0 (apply 'call-process (hg-binary) nil t t "qpop"
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197 (if patch (list patch))))
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198 last-line (mq-last-line))
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199 (kill-buffer (current-buffer))
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200 (mq-refresh-buffers root)
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201 (sit-for 0)
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202 (when last-line
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203 (if ok
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204 (message "Popping... %s" last-line)
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205 (error "Popping... %s" last-line)))))
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206
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207 (defun mq-pop-all ()
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208 "Push patches until none are applied."
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209 (interactive)
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210 (mq-pop "-a"))
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211
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212 (defun mq-refresh-internal (root &rest args)
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213 (hg-sync-buffers root)
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214 (let ((patch (mq-patch-info "qtop")))
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215 (message "Refreshing %s..." patch)
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216 (let ((ret (apply 'hg-run "qrefresh" args)))
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217 (if (equal (car ret) 0)
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218 (message "Refreshing %s... done." patch)
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219 (error "Refreshing %s... %s" patch (hg-chomp (cdr ret)))))))
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220
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221 (defun mq-refresh (&optional git)
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222 "Refresh the topmost applied patch.
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223 With a prefix argument, generate a git-compatible patch."
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224 (interactive "P")
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225 (let ((root (hg-root)))
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226 (unless root
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227 (error "Cannot refresh outside of a repository!"))
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228 (apply 'mq-refresh-internal root (if git '("--git")))))
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229
2995
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230 (defun mq-patch-info (cmd &optional msg)
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231 (let* ((ret (hg-run cmd))
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232 (info (hg-chomp (cdr ret))))
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233 (if (equal (car ret) 0)
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234 (if msg
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235 (message "%s patch: %s" msg info)
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236 info)
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237 (error "%s" info))))
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238
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239 (defun mq-top ()
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240 "Print the name of the topmost applied patch."
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241 (interactive)
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242 (mq-patch-info "qtop" "Top"))
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243
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244 (defun mq-next ()
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245 "Print the name of the next patch to be pushed."
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246 (interactive)
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247 (mq-patch-info "qnext" "Next"))
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248
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249 (defun mq-previous ()
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250 "Print the name of the first patch below the topmost applied patch.
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251 This would become the active patch if popped to."
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252 (interactive)
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253 (mq-patch-info "qprev" "Previous"))
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254
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255 (defun mq-edit-finish ()
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256 "Finish editing the description of this patch, and refresh the patch."
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257 (interactive)
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258 (unless (equal (mq-patch-info "qtop") mq-top)
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259 (error "Topmost patch has changed!"))
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260 (hg-sync-buffers hg-root)
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261 (run-hooks 'mq-edit-finish-hook)
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262 (mq-refresh-internal hg-root "-m" (buffer-substring (point-min) (point-max)))
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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-edit-kill ()
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268 "Kill the edit currently being prepared."
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269 (interactive)
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270 (when (or (not (buffer-modified-p)) (y-or-n-p "Really kill this edit? "))
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271 (let ((buf mq-prev-buffer))
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272 (kill-buffer nil)
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273 (switch-to-buffer buf))))
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274
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275 (defun mq-get-top (root)
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276 (let ((entry (assoc root mq-top-patch)))
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277 (if entry
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278 (cdr entry))))
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279
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280 (defun mq-set-top (root patch)
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281 (let ((entry (assoc root mq-top-patch)))
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282 (if entry
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283 (if patch
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284 (setcdr entry patch)
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285 (setq mq-top-patch (delq entry mq-top-patch)))
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286 (setq mq-top-patch (cons (cons root patch) mq-top-patch)))))
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287
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288 (defun mq-update-mode-lines (root)
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289 (let ((cwd default-directory))
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290 (cd root)
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291 (condition-case nil
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292 (mq-set-top root (mq-patch-info "qtop"))
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293 (error (mq-set-top root nil)))
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294 (cd cwd))
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295 (let ((patch (mq-get-top root)))
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296 (save-excursion
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297 (dolist (buf (hg-buffers-visiting-repo root))
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298 (set-buffer buf)
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299 (if mq-mode
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300 (setq mq-mode (or (and patch (concat " MQ:" patch)) " MQ")))))))
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301
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302 (defun mq-mode (&optional arg)
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303 "Minor mode for Mercurial repositories with an MQ patch queue"
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304 (interactive "i")
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305 (cond ((hg-root)
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306 (setq mq-mode (if (null arg) (not mq-mode)
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307 arg))
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308 (mq-update-mode-lines (hg-root))))
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309 (run-hooks 'mq-mode-hook))
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310
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311 (defun mq-edit-mode ()
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312 "Mode for editing the description of a patch.
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313
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314 Key bindings
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315 ------------
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316 \\[mq-edit-finish] use this description
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317 \\[mq-edit-kill] abandon this description"
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318 (interactive)
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319 (use-local-map mq-edit-mode-map)
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320 (set-syntax-table text-mode-syntax-table)
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321 (setq local-abbrev-table text-mode-abbrev-table
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322 major-mode 'mq-edit-mode
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323 mode-name "MQ-Edit")
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324 (set-buffer-modified-p nil)
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325 (setq buffer-undo-list nil)
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326 (run-hooks 'text-mode-hook 'mq-edit-mode-hook))
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327
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328 (defun mq-refresh-edit ()
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329 "Refresh the topmost applied patch, editing the patch description."
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330 (interactive)
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331 (while mq-prev-buffer
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332 (set-buffer mq-prev-buffer))
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333 (let ((root (hg-root))
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334 (prev-buffer (current-buffer))
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335 (patch (mq-patch-info "qtop")))
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336 (hg-sync-buffers root)
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337 (let ((buf-name (format "*MQ: Edit description of %s*" patch)))
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338 (switch-to-buffer (get-buffer-create buf-name))
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339 (when (= (point-min) (point-max))
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340 (set (make-local-variable 'hg-root) root)
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341 (set (make-local-variable 'mq-top) patch)
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342 (setq mq-prev-buffer prev-buffer)
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343 (insert (hg-run0 "qheader"))
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344 (goto-char (point-min)))
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345 (mq-edit-mode)
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346 (cd root)))
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347 (message "Type `C-c C-c' to finish editing and refresh the patch."))
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348
4422
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349 (defun mq-new (name)
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350 "Create a new empty patch named NAME.
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351 The patch is applied on top of the current topmost patch.
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352 With a prefix argument, forcibly create the patch even if the working
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diff changeset
353 directory is modified."
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354 (interactive (list (mq-read-patch-name "qseries" " to create" t)))
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355 (message "Creating patch...")
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356 (let ((ret (if current-prefix-arg
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357 (hg-run "qnew" "-f" name)
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358 (hg-run "qnew" name))))
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diff changeset
359 (if (equal (car ret) 0)
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diff changeset
360 (progn
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361 (hg-update-mode-lines (buffer-file-name))
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diff changeset
362 (message "Creating patch... done."))
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diff changeset
363 (error "Creating patch... %s" (hg-chomp (cdr ret))))))
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diff changeset
364
4423
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diff changeset
365 (defun mq-edit-series ()
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366 "Edit the MQ series file directly."
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diff changeset
367 (interactive)
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diff changeset
368 (let ((root (hg-root)))
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diff changeset
369 (unless root
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diff changeset
370 (error "Not in an MQ repository!"))
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diff changeset
371 (find-file (concat root ".hg/patches/series"))))
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diff changeset
372
4425
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diff changeset
373 (defun mq-diff (&optional git)
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diff changeset
374 "Display a diff of the topmost applied patch.
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diff changeset
375 With a prefix argument, display a git-compatible diff."
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diff changeset
376 (interactive "P")
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diff changeset
377 (hg-view-output ((format "MQ: Diff of %s" (mq-patch-info "qtop")))
4425
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diff changeset
378 (if git
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diff changeset
379 (call-process (hg-binary) nil t nil "qdiff" "--git")
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diff changeset
380 (call-process (hg-binary) nil t nil "qdiff"))
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diff changeset
381 (diff-mode)
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diff changeset
382 (font-lock-fontify-buffer)))
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diff changeset
383
4429
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384 (defun mq-signoff ()
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385 "Sign off on the current patch, in the style used by the Linux kernel.
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386 If the variable mq-signoff-address is non-nil, it will be used, otherwise
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387 the value of the ui.username item from your hgrc will be used."
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388 (interactive)
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389 (let ((was-editing (eq major-mode 'mq-edit-mode))
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390 signed)
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391 (unless was-editing
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392 (mq-refresh-edit))
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393 (save-excursion
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394 (let* ((user (or mq-signoff-address
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395 (hg-run0 "debugconfig" "ui.username")))
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396 (signoff (concat "Signed-off-by: " user)))
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397 (if (search-forward signoff nil t)
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398 (message "You have already signed off on this patch.")
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399 (goto-char (point-max))
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400 (let ((case-fold-search t))
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401 (if (re-search-backward "^Signed-off-by: " nil t)
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402 (forward-line 1)
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403 (insert "\n")))
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404 (insert signoff)
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405 (message "%s" signoff)
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406 (setq signed t))))
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407 (unless was-editing
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408 (if signed
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409 (mq-edit-finish)
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410 (mq-edit-kill)))))
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411
2993
425413d9ef59 Emacs: add mq.el, early support for Mercurial Queues.
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412
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413 (provide 'mq)
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414
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415
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416 ;;; Local Variables:
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417 ;;; prompt-to-byte-compile: nil
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418 ;;; end: