mdw@git.distorted.org.uk Git - stgit/blob - contrib/stgit.el

   1 ;; stgit.el: An emacs mode for StGit
   2 ;;
   3 ;; Copyright (C) 2007 David Kågedal <davidk@lysator.liu.se>
   4 ;;
   5 ;; To install: put this file on the load-path and place the following
   6 ;; in your .emacs file:
   7 ;;
   8 ;;    (require 'stgit)
   9 ;;
  10 ;; To start: `M-x stgit'
  11
  12 (when (< emacs-major-version 22)
  13   (error "Emacs older than 22 is not supported by stgit.el"))
  14
  15 (require 'git nil t)
  16 (require 'cl)
  17 (require 'ewoc)
  18 (require 'easymenu)
  19
  20 (defun stgit (dir)
  21   "Manage StGit patches for the tree in DIR.
  22
  23 See `stgit-mode' for commands available."
  24   (interactive "DDirectory: \n")
  25   (switch-to-stgit-buffer (git-get-top-dir dir))
  26   (stgit-reload))
  27
  28 (defun stgit-assert-mode ()
  29   "Signal an error if not in an StGit buffer."
  30   (assert (derived-mode-p 'stgit-mode) nil "Not an StGit buffer"))
  31
  32 (unless (fboundp 'git-get-top-dir)
  33   (defun git-get-top-dir (dir)
  34     "Retrieve the top-level directory of a git tree."
  35     (let ((cdup (with-output-to-string
  36                   (with-current-buffer standard-output
  37                     (cd dir)
  38                     (unless (eq 0 (call-process "git" nil t nil
  39                                                 "rev-parse" "--show-cdup"))
  40                       (error "Cannot find top-level git tree for %s" dir))))))
  41       (expand-file-name (concat (file-name-as-directory dir)
  42                                 (car (split-string cdup "\n")))))))
  43
  44 (defun stgit-refresh-git-status (&optional dir)
  45   "If it exists, refresh the `git-status' buffer belonging to
  46 directory DIR or `default-directory'"
  47   (when (and (fboundp 'git-find-status-buffer)
  48              (fboundp 'git-refresh-status))
  49     (let* ((top-dir (git-get-top-dir (or dir default-directory)))
  50            (git-status-buffer (and top-dir (git-find-status-buffer top-dir))))
  51       (when git-status-buffer
  52         (with-current-buffer git-status-buffer
  53           (git-refresh-status))))))
  54
  55 (defun stgit-find-buffer (dir)
  56   "Return the buffer displaying StGit patches for DIR, or nil if none."
  57   (setq dir (file-name-as-directory dir))
  58   (let ((buffers (buffer-list)))
  59     (while (and buffers
  60                 (not (with-current-buffer (car buffers)
  61                        (and (eq major-mode 'stgit-mode)
  62                             (string= default-directory dir)))))
  63       (setq buffers (cdr buffers)))
  64     (and buffers (car buffers))))
  65
  66 (defun switch-to-stgit-buffer (dir)
  67   "Switch to a (possibly new) buffer displaying StGit patches for DIR."
  68   (setq dir (file-name-as-directory dir))
  69   (let ((buffer (stgit-find-buffer dir)))
  70     (switch-to-buffer (or buffer
  71                           (create-stgit-buffer dir)))))
  72
  73 (defstruct (stgit-patch)
  74   status name desc empty files-ewoc)
  75
  76 (defun stgit-patch-pp (patch)
  77   (let* ((status (stgit-patch-status patch))
  78          (start (point))
  79          (name (stgit-patch-name patch))
  80          (face (cdr (assq status stgit-patch-status-face-alist))))
  81     (insert (case status
  82               ('applied "+")
  83               ('top ">")
  84               ('unapplied "-")
  85               (t " "))
  86             (if (memq name stgit-marked-patches)
  87                 "*" " "))
  88     (if (memq status '(index work))
  89         (insert (propertize (if (eq status 'index) "Index" "Work tree")
  90                             'face face))
  91       (insert (format "%-30s"
  92                       (propertize (symbol-name name)
  93                                   'face face
  94                                   'syntax-table (string-to-syntax "w")))
  95               "  "
  96               (if (stgit-patch-empty patch) "(empty) " "")
  97               (propertize (or (stgit-patch-desc patch) "")
  98                           'face 'stgit-description-face)))
  99     (insert "\n")
 100     (put-text-property start (point) 'entry-type 'patch)
 101     (when (memq name stgit-expanded-patches)
 102       (stgit-insert-patch-files patch))
 103     (put-text-property start (point) 'patch-data patch)))
 104
 105 (defun create-stgit-buffer (dir)
 106   "Create a buffer for showing StGit patches.
 107 Argument DIR is the repository path."
 108   (let ((buf (create-file-buffer (concat dir "*stgit*")))
 109         (inhibit-read-only t))
 110     (with-current-buffer buf
 111       (setq default-directory dir)
 112       (stgit-mode)
 113       (set (make-local-variable 'stgit-ewoc)
 114            (ewoc-create #'stgit-patch-pp "Branch:\n\n" "--\n" t))
 115       (setq buffer-read-only t))
 116     buf))
 117
 118 (defmacro stgit-capture-output (name &rest body)
 119   "Capture StGit output and, if there was any output, show it in a window
 120 at the end.
 121 Returns nil if there was no output."
 122   (declare (debug ([&or stringp null] body))
 123            (indent 1))
 124   `(let ((output-buf (get-buffer-create ,(or name "*StGit output*")))
 125          (stgit-dir default-directory)
 126          (inhibit-read-only t))
 127      (with-current-buffer output-buf
 128        (erase-buffer)
 129        (setq default-directory stgit-dir)
 130        (setq buffer-read-only t))
 131      (let ((standard-output output-buf))
 132        ,@body)
 133      (with-current-buffer output-buf
 134        (set-buffer-modified-p nil)
 135        (setq buffer-read-only t)
 136        (if (< (point-min) (point-max))
 137            (display-buffer output-buf t)))))
 138
 139 (defun stgit-make-run-args (args)
 140   "Return a copy of ARGS with its elements converted to strings."
 141   (mapcar (lambda (x)
 142             ;; don't use (format "%s" ...) to limit type errors
 143             (cond ((stringp x) x)
 144                   ((integerp x) (number-to-string x))
 145                   ((symbolp x) (symbol-name x))
 146                   (t
 147                    (error "Bad element in stgit-make-run-args args: %S" x))))
 148           args))
 149
 150 (defun stgit-run-silent (&rest args)
 151   (setq args (stgit-make-run-args args))
 152   (apply 'call-process "stg" nil standard-output nil args))
 153
 154 (defun stgit-run (&rest args)
 155   (setq args (stgit-make-run-args args))
 156   (let ((msgcmd (mapconcat #'identity args " ")))
 157     (message "Running stg %s..." msgcmd)
 158     (apply 'call-process "stg" nil standard-output nil args)
 159     (message "Running stg %s...done" msgcmd)))
 160
 161 (defun stgit-run-git (&rest args)
 162   (setq args (stgit-make-run-args args))
 163   (let ((msgcmd (mapconcat #'identity args " ")))
 164     (message "Running git %s..." msgcmd)
 165     (apply 'call-process "git" nil standard-output nil args)
 166     (message "Running git %s...done" msgcmd)))
 167
 168 (defun stgit-run-git-silent (&rest args)
 169   (setq args (stgit-make-run-args args))
 170   (apply 'call-process "git" nil standard-output nil args))
 171
 172 (defun stgit-index-empty-p ()
 173   "Returns non-nil if the index contains no changes from HEAD."
 174   (zerop (stgit-run-git-silent "diff-index" "--cached" "--quiet" "HEAD")))
 175
 176 (defun stgit-work-tree-empty-p ()
 177   "Returns non-nil if the work tree contains no changes from index."
 178   (zerop (stgit-run-git-silent "diff-files" "--quiet")))
 179
 180 (defvar stgit-index-node)
 181 (defvar stgit-worktree-node)
 182
 183 (defun stgit-refresh-index ()
 184   (when stgit-index-node
 185     (ewoc-invalidate (car stgit-index-node) (cdr stgit-index-node))))
 186
 187 (defun stgit-refresh-worktree ()
 188   (when stgit-worktree-node
 189     (ewoc-invalidate (car stgit-worktree-node) (cdr stgit-worktree-node))))
 190
 191 (defun stgit-run-series-insert-index (ewoc)
 192   (setq index-node    (cons ewoc (ewoc-enter-last ewoc
 193                                                   (make-stgit-patch
 194                                                    :status 'index
 195                                                    :name :index
 196                                                    :desc nil
 197                                                    :empty nil)))
 198         worktree-node (cons ewoc (ewoc-enter-last ewoc
 199                                                   (make-stgit-patch
 200                                                    :status 'work
 201                                                    :name :work
 202                                                    :desc nil
 203                                                    :empty nil)))))
 204
 205 (defun stgit-run-series (ewoc)
 206   (setq stgit-index-node nil
 207         stgit-worktree-node nil)
 208   (let ((inserted-index (not stgit-show-worktree))
 209         index-node
 210         worktree-node
 211         all-patchsyms)
 212     (with-temp-buffer
 213       (let* ((standard-output (current-buffer))
 214              (exit-status (stgit-run-silent "series"
 215                                             "--description" "--empty")))
 216         (goto-char (point-min))
 217         (if (not (zerop exit-status))
 218             (cond ((looking-at "stg series: \\(.*\\)")
 219                    (setq inserted-index t)
 220                    (ewoc-set-hf ewoc (car (ewoc-get-hf ewoc))
 221                                 (substitute-command-keys
 222                                  "-- not initialized; run \\[stgit-init]")))
 223                   ((looking-at ".*")
 224                    (error "Error running stg: %s"
 225                           (match-string 0))))
 226           (while (not (eobp))
 227             (unless (looking-at
 228                      "\\([0 ]\\)\\([>+-]\\)\\( \\)\\([^ ]+\\) *[|#] \\(.*\\)")
 229               (error "Syntax error in output from stg series"))
 230             (let* ((state-str (match-string 2))
 231                    (state (cond ((string= state-str ">") 'top)
 232                                 ((string= state-str "+") 'applied)
 233                                 ((string= state-str "-") 'unapplied)))
 234                    (name (intern (match-string 4)))
 235                    (desc (match-string 5))
 236                    (empty (string= (match-string 1) "0")))
 237               (unless inserted-index
 238                 (when (or (eq stgit-show-worktree-mode 'top)
 239                           (and (eq stgit-show-worktree-mode 'center)
 240                                (eq state 'unapplied)))
 241                   (setq inserted-index t)
 242                   (stgit-run-series-insert-index ewoc)))
 243               (setq all-patchsyms (cons name all-patchsyms))
 244               (ewoc-enter-last ewoc
 245                                (make-stgit-patch
 246                                 :status state
 247                                 :name   name
 248                                 :desc   desc
 249                                 :empty  empty)))
 250             (forward-line 1))))
 251       (unless inserted-index
 252         (stgit-run-series-insert-index ewoc)))
 253     (setq stgit-index-node    index-node
 254           stgit-worktree-node worktree-node
 255           stgit-marked-patches (intersection stgit-marked-patches
 256                                              all-patchsyms))))
 257
 258 (defun stgit-reload ()
 259   "Update the contents of the StGit buffer."
 260   (interactive)
 261   (stgit-assert-mode)
 262   (let ((inhibit-read-only t)
 263         (curline (line-number-at-pos))
 264         (curpatch (stgit-patch-name-at-point))
 265         (curfile (stgit-patched-file-at-point)))
 266     (ewoc-filter stgit-ewoc #'(lambda (x) nil))
 267     (ewoc-set-hf stgit-ewoc
 268                  (concat "Branch: "
 269                          (propertize
 270                           (substring (with-output-to-string
 271                                        (stgit-run-silent "branch"))
 272                                      0 -1)
 273                           'face 'stgit-branch-name-face)
 274                          "\n\n")
 275                  (if stgit-show-worktree
 276                      "--"
 277                    (propertize
 278                     (substitute-command-keys "--\n\"\\[stgit-toggle-worktree]\"\
 279  shows the working tree\n")
 280                     'face 'stgit-description-face)))
 281     (stgit-run-series stgit-ewoc)
 282     (if curpatch
 283         (stgit-goto-patch curpatch (and curfile (stgit-file-file curfile)))
 284       (goto-line curline)))
 285   (stgit-refresh-git-status))
 286
 287 (defun stgit-set-default (symbol value)
 288   "Set default value of SYMBOL to VALUE using `set-default' and
 289 reload all StGit buffers."
 290   (set-default symbol value)
 291   (dolist (buf (buffer-list))
 292     (with-current-buffer buf
 293       (when (eq major-mode 'stgit-mode)
 294         (stgit-reload)))))
 295
 296 (defgroup stgit nil
 297   "A user interface for the StGit patch maintenance tool."
 298   :group 'tools
 299   :link '(function-link stgit)
 300   :link '(url-link "http://www.procode.org/stgit/"))
 301
 302 (defcustom stgit-abbreviate-copies-and-renames t
 303   "If non-nil, abbreviate copies and renames as \"dir/{old -> new}/file\"
 304 instead of \"dir/old/file -> dir/new/file\"."
 305   :type 'boolean
 306   :group 'stgit
 307   :set 'stgit-set-default)
 308
 309 (defcustom stgit-default-show-worktree t
 310   "Set to non-nil to by default show the working tree in a new stgit buffer.
 311
 312 Use \\<stgit-mode-map>\\[stgit-toggle-worktree] to toggle the this setting in an already-started StGit buffer."
 313   :type 'boolean
 314   :group 'stgit
 315   :link '(variable-link stgit-show-worktree))
 316
 317 (defcustom stgit-find-copies-harder nil
 318   "Try harder to find copied files when listing patches.
 319
 320 When not nil, runs git diff-tree with the --find-copies-harder
 321 flag, which reduces performance."
 322   :type 'boolean
 323   :group 'stgit
 324   :set 'stgit-set-default)
 325
 326 (defcustom stgit-show-worktree-mode 'center
 327   "This variable controls where the \"Index\" and \"Work tree\"
 328 will be shown on in the buffer.
 329
 330 It can be set to 'top (above all patches), 'center (show between
 331 applied and unapplied patches), and 'bottom (below all patches)."
 332   :type '(radio (const :tag "above all patches (top)" top)
 333                 (const :tag "between applied and unapplied patches (center)"
 334                        center)
 335                 (const :tag "below all patches (bottom)" bottom))
 336   :group 'stgit
 337   :link '(variable-link stgit-show-worktree)
 338   :set 'stgit-set-default)
 339
 340 (defface stgit-branch-name-face
 341   '((t :inherit bold))
 342   "The face used for the StGit branch name"
 343   :group 'stgit)
 344
 345 (defface stgit-top-patch-face
 346   '((((background dark)) (:weight bold :foreground "yellow"))
 347     (((background light)) (:weight bold :foreground "purple"))
 348     (t (:weight bold)))
 349   "The face used for the top patch names"
 350   :group 'stgit)
 351
 352 (defface stgit-applied-patch-face
 353   '((((background dark)) (:foreground "light yellow"))
 354     (((background light)) (:foreground "purple"))
 355     (t ()))
 356   "The face used for applied patch names"
 357   :group 'stgit)
 358
 359 (defface stgit-unapplied-patch-face
 360   '((((background dark)) (:foreground "gray80"))
 361     (((background light)) (:foreground "orchid"))
 362     (t ()))
 363   "The face used for unapplied patch names"
 364   :group 'stgit)
 365
 366 (defface stgit-description-face
 367   '((((background dark)) (:foreground "tan"))
 368     (((background light)) (:foreground "dark red")))
 369   "The face used for StGit descriptions"
 370   :group 'stgit)
 371
 372 (defface stgit-index-work-tree-title-face
 373   '((((supports :slant italic)) :slant italic)
 374     (t :inherit bold))
 375   "StGit mode face used for the \"Index\" and \"Work tree\" titles"
 376   :group 'stgit)
 377
 378 (defface stgit-unmerged-file-face
 379   '((((class color) (background light)) (:foreground "red" :bold t))
 380     (((class color) (background dark)) (:foreground "red" :bold t)))
 381   "StGit mode face used for unmerged file status"
 382   :group 'stgit)
 383
 384 (defface stgit-unknown-file-face
 385   '((((class color) (background light)) (:foreground "goldenrod" :bold t))
 386     (((class color) (background dark)) (:foreground "goldenrod" :bold t)))
 387   "StGit mode face used for unknown file status"
 388   :group 'stgit)
 389
 390 (defface stgit-ignored-file-face
 391   '((((class color) (background light)) (:foreground "grey60"))
 392     (((class color) (background dark)) (:foreground "grey40")))
 393   "StGit mode face used for ignored files")
 394
 395 (defface stgit-file-permission-face
 396   '((((class color) (background light)) (:foreground "green" :bold t))
 397     (((class color) (background dark)) (:foreground "green" :bold t)))
 398   "StGit mode face used for permission changes."
 399   :group 'stgit)
 400
 401 (defface stgit-modified-file-face
 402   '((((class color) (background light)) (:foreground "purple"))
 403     (((class color) (background dark)) (:foreground "salmon")))
 404   "StGit mode face used for modified file status"
 405   :group 'stgit)
 406
 407 (defconst stgit-file-status-code-strings
 408   (mapcar (lambda (arg)
 409             (cons (car arg)
 410                   (propertize (cadr arg) 'face (car (cddr arg)))))
 411           '((add         "Added"       stgit-modified-file-face)
 412             (copy        "Copied"      stgit-modified-file-face)
 413             (delete      "Deleted"     stgit-modified-file-face)
 414             (modify      "Modified"    stgit-modified-file-face)
 415             (rename      "Renamed"     stgit-modified-file-face)
 416             (mode-change "Mode change" stgit-modified-file-face)
 417             (unmerged    "Unmerged"    stgit-unmerged-file-face)
 418             (unknown     "Unknown"     stgit-unknown-file-face)
 419             (ignore      "Ignored"     stgit-ignored-file-face)))
 420   "Alist of code symbols to description strings")
 421
 422 (defconst stgit-patch-status-face-alist
 423   '((applied   . stgit-applied-patch-face)
 424     (top       . stgit-top-patch-face)
 425     (unapplied . stgit-unapplied-patch-face)
 426     (index     . stgit-index-work-tree-title-face)
 427     (work      . stgit-index-work-tree-title-face))
 428   "Alist of face to use for a given patch status")
 429
 430 (defun stgit-file-status-code-as-string (file)
 431   "Return stgit status code for FILE as a string"
 432   (let* ((code (assq (stgit-file-status file)
 433                      stgit-file-status-code-strings))
 434          (score (stgit-file-cr-score file)))
 435     (when code
 436       (format "%-11s  "
 437               (if (and score (/= score 100))
 438                   (format "%s %s" (cdr code)
 439                           (propertize (format "%d%%" score)
 440                                       'face 'stgit-description-face))
 441                 (cdr code))))))
 442
 443 (defun stgit-file-status-code (str &optional score)
 444   "Return stgit status code from git status string"
 445   (let ((code (assoc str '(("A" . add)
 446                            ("C" . copy)
 447                            ("D" . delete)
 448                            ("I" . ignore)
 449                            ("M" . modify)
 450                            ("R" . rename)
 451                            ("T" . mode-change)
 452                            ("U" . unmerged)
 453                            ("X" . unknown)))))
 454     (setq code (if code (cdr code) 'unknown))
 455     (when (stringp score)
 456       (if (> (length score) 0)
 457           (setq score (string-to-number score))
 458         (setq score nil)))
 459     (if score (cons code score) code)))
 460
 461 (defconst stgit-file-type-strings
 462   '((#o100 . "file")
 463     (#o120 . "symlink")
 464     (#o160 . "subproject"))
 465   "Alist of names of file types")
 466
 467 (defun stgit-file-type-string (type)
 468   "Return string describing file type TYPE (the high bits of file permission).
 469 Cf. `stgit-file-type-strings' and `stgit-file-type-change-string'."
 470   (let ((type-str (assoc type stgit-file-type-strings)))
 471     (or (and type-str (cdr type-str))
 472         (format "unknown type %o" type))))
 473
 474 (defun stgit-file-type-change-string (old-perm new-perm)
 475   "Return string describing file type change from OLD-PERM to NEW-PERM.
 476 Cf. `stgit-file-type-string'."
 477   (let ((old-type (lsh old-perm -9))
 478         (new-type (lsh new-perm -9)))
 479     (cond ((= old-type new-type) "")
 480           ((zerop new-type) "")
 481           ((zerop old-type)
 482            (if (= new-type #o100)
 483                ""
 484              (format "   (%s)" (stgit-file-type-string new-type))))
 485           (t (format "   (%s -> %s)"
 486                      (stgit-file-type-string old-type)
 487                      (stgit-file-type-string new-type))))))
 488
 489 (defun stgit-file-mode-change-string (old-perm new-perm)
 490   "Return string describing file mode change from OLD-PERM to NEW-PERM.
 491 Cf. `stgit-file-type-change-string'."
 492   (setq old-perm (logand old-perm #o777)
 493         new-perm (logand new-perm #o777))
 494   (if (or (= old-perm new-perm)
 495           (zerop old-perm)
 496           (zerop new-perm))
 497       ""
 498     (let* ((modified       (logxor old-perm new-perm))
 499            (not-x-modified (logand (logxor old-perm new-perm) #o666)))
 500       (cond ((zerop modified) "")
 501             ((and (zerop not-x-modified)
 502                   (or (and (eq #o111 (logand old-perm #o111))
 503                            (propertize "-x" 'face 'stgit-file-permission-face))
 504                       (and (eq #o111 (logand new-perm #o111))
 505                            (propertize "+x" 'face
 506                                        'stgit-file-permission-face)))))
 507             (t (concat (propertize (format "%o" old-perm)
 508                                    'face 'stgit-file-permission-face)
 509                        (propertize " -> "
 510                                    'face 'stgit-description-face)
 511                        (propertize (format "%o" new-perm)
 512                                    'face 'stgit-file-permission-face)))))))
 513
 514 (defstruct (stgit-file)
 515   old-perm new-perm copy-or-rename cr-score cr-from cr-to status file)
 516
 517 (defun stgit-describe-copy-or-rename (file)
 518   (let ((arrow (concat " " (propertize "->" 'face 'stgit-description-face) " "))
 519         from to common-head common-tail)
 520
 521     (when stgit-abbreviate-copies-and-renames
 522       (setq from (split-string (stgit-file-cr-from file) "/")
 523             to   (split-string (stgit-file-cr-to   file) "/"))
 524
 525       (while (and from to (cdr from) (cdr to)
 526                   (string-equal (car from) (car to)))
 527         (setq common-head (cons (car from) common-head)
 528               from        (cdr from)
 529               to          (cdr to)))
 530       (setq common-head (nreverse common-head)
 531             from        (nreverse from)
 532             to          (nreverse to))
 533       (while (and from to (cdr from) (cdr to)
 534                   (string-equal (car from) (car to)))
 535         (setq common-tail (cons (car from) common-tail)
 536               from        (cdr from)
 537               to          (cdr to)))
 538       (setq from (nreverse from)
 539             to   (nreverse to)))
 540
 541     (if (or common-head common-tail)
 542         (concat (if common-head
 543                     (mapconcat #'identity common-head "/")
 544                   "")
 545                 (if common-head "/" "")
 546                 (propertize "{" 'face 'stgit-description-face)
 547                 (mapconcat #'identity from "/")
 548                 arrow
 549                 (mapconcat #'identity to "/")
 550                 (propertize "}" 'face 'stgit-description-face)
 551                 (if common-tail "/" "")
 552                 (if common-tail
 553                     (mapconcat #'identity common-tail "/")
 554                   ""))
 555       (concat (stgit-file-cr-from file) arrow (stgit-file-cr-to file)))))
 556
 557 (defun stgit-file-pp (file)
 558   (let ((status (stgit-file-status file))
 559         (name (if (stgit-file-copy-or-rename file)
 560                   (stgit-describe-copy-or-rename file)
 561                 (stgit-file-file file)))
 562         (mode-change (stgit-file-mode-change-string
 563                       (stgit-file-old-perm file)
 564                       (stgit-file-new-perm file)))
 565         (start (point)))
 566     (insert (format "    %-12s%s%s%s%s\n"
 567                     (stgit-file-status-code-as-string file)
 568                     mode-change
 569                     (if (zerop (length mode-change)) "" " ")
 570                     name
 571                     (propertize (stgit-file-type-change-string
 572                                  (stgit-file-old-perm file)
 573                                  (stgit-file-new-perm file))
 574                                 'face 'stgit-description-face)))
 575     (add-text-properties start (point)
 576                          (list 'entry-type 'file
 577                                'file-data file))))
 578
 579 (defun stgit-find-copies-harder-diff-arg ()
 580   "Return the flag to use with `git-diff' depending on the
 581 `stgit-find-copies-harder' flag."
 582   (if stgit-find-copies-harder "--find-copies-harder" "-C"))
 583
 584 (defun stgit-insert-ls-files (args file-flag)
 585   (let ((start (point)))
 586     (apply 'stgit-run-git
 587            (append '("ls-files" "--exclude-standard" "-z") args))
 588     (goto-char start)
 589     (while (looking-at "\\([^\0]*\\)\0")
 590       (let ((name-len (- (match-end 0) (match-beginning 0))))
 591         (insert ":0 0 0000000000000000000000000000000000000000 0000000000000000000000000000000000000000 " file-flag "\0")
 592         (forward-char name-len)))))
 593
 594 (defun stgit-insert-patch-files (patch)
 595   "Expand (show modification of) the patch PATCH after the line
 596 at point."
 597   (let* ((patchsym (stgit-patch-name patch))
 598          (end      (point-marker))
 599          (args     (list "-z" (stgit-find-copies-harder-diff-arg)))
 600          (ewoc     (ewoc-create #'stgit-file-pp nil nil t)))
 601     (set-marker-insertion-type end t)
 602     (setf (stgit-patch-files-ewoc patch) ewoc)
 603     (with-temp-buffer
 604       (let ((standard-output (current-buffer)))
 605         (apply 'stgit-run-git
 606                (cond ((eq patchsym :work)
 607                       `("diff-files" "-0" ,@args))
 608                      ((eq patchsym :index)
 609                       `("diff-index" ,@args "--cached" "HEAD"))
 610                      (t
 611                       `("diff-tree" ,@args "-r" ,(stgit-id patchsym)))))
 612
 613         (when (and (eq patchsym :work))
 614           (when stgit-show-ignored
 615             (stgit-insert-ls-files '("--ignored" "--others") "I"))
 616           (when stgit-show-unknown
 617             (stgit-insert-ls-files '("--others") "X"))
 618           (sort-regexp-fields nil ":[^\0]*\0\\([^\0]*\\)\0" "\\1"
 619                               (point-min) (point-max)))
 620
 621         (goto-char (point-min))
 622         (unless (or (eobp) (memq patchsym '(:work :index)))
 623           (forward-char 41))
 624         (while (looking-at ":\\([0-7]+\\) \\([0-7]+\\) [0-9A-Fa-f]\\{40\\} [0-9A-Fa-f]\\{40\\} ")
 625           (let ((old-perm (string-to-number (match-string 1) 8))
 626                 (new-perm (string-to-number (match-string 2) 8)))
 627             (goto-char (match-end 0))
 628             (let ((file
 629                    (cond ((looking-at
 630                            "\\([CR]\\)\\([0-9]*\\)\0\\([^\0]*\\)\0\\([^\0]*\\)\0")
 631                           (let* ((patch-status (stgit-patch-status patch))
 632                                  (file-subexp  (if (eq patch-status 'unapplied)
 633                                                    3
 634                                                  4))
 635                                  (file         (match-string file-subexp)))
 636                             (make-stgit-file
 637                              :old-perm       old-perm
 638                              :new-perm       new-perm
 639                              :copy-or-rename t
 640                              :cr-score       (string-to-number (match-string 2))
 641                              :cr-from        (match-string 3)
 642                              :cr-to          (match-string 4)
 643                              :status         (stgit-file-status-code
 644                                               (match-string 1))
 645                              :file           file)))
 646                          ((looking-at "\\([ABD-QS-Z]\\)\0\\([^\0]*\\)\0")
 647                           (make-stgit-file
 648                            :old-perm       old-perm
 649                            :new-perm       new-perm
 650                            :copy-or-rename nil
 651                            :cr-score       nil
 652                            :cr-from        nil
 653                            :cr-to          nil
 654                            :status         (stgit-file-status-code
 655                                             (match-string 1))
 656                            :file           (match-string 2))))))
 657               (goto-char (match-end 0))
 658               (ewoc-enter-last ewoc file))))
 659
 660         (unless (ewoc-nth ewoc 0)
 661           (ewoc-set-hf ewoc ""
 662                        (concat "    "
 663                                (propertize "<no files>"
 664                                            'face 'stgit-description-face)
 665                                "\n")))))
 666     (goto-char end)))
 667
 668 (defun stgit-find-file (&optional other-window)
 669   (let* ((file (or (stgit-patched-file-at-point)
 670                    (error "No file at point")))
 671          (filename (expand-file-name (stgit-file-file file))))
 672     (unless (file-exists-p filename)
 673       (error "File does not exist"))
 674     (funcall (if other-window 'find-file-other-window 'find-file)
 675              filename)
 676     (when (eq (stgit-file-status file) 'unmerged)
 677       (smerge-mode 1))))
 678
 679 (defun stgit-expand (&optional patches collapse)
 680   "Show the contents of marked patches, or the patch at point.
 681
 682 See also `stgit-collapse'.
 683
 684 Non-interactively, operate on PATCHES, and collapse instead of
 685 expand if COLLAPSE is not nil."
 686   (interactive (list (stgit-patches-marked-or-at-point t)))
 687   (stgit-assert-mode)
 688   (let ((patches-diff (funcall (if collapse #'intersection #'set-difference)
 689                                patches stgit-expanded-patches)))
 690     (setq stgit-expanded-patches
 691           (if collapse
 692               (set-difference stgit-expanded-patches patches-diff)
 693             (append stgit-expanded-patches patches-diff)))
 694     (ewoc-map #'(lambda (patch)
 695                   (memq (stgit-patch-name patch) patches-diff))
 696               stgit-ewoc))
 697   (move-to-column (stgit-goal-column)))
 698
 699 (defun stgit-collapse (&optional patches)
 700   "Hide the contents of marked patches, or the patch at point.
 701
 702 See also `stgit-expand'."
 703   (interactive (list (stgit-patches-marked-or-at-point t)))
 704   (stgit-assert-mode)
 705   (stgit-expand patches t))
 706
 707 (defun stgit-select-patch ()
 708   (let ((patchname (stgit-patch-name-at-point)))
 709     (stgit-expand (list patchname)
 710                   (memq patchname stgit-expanded-patches))))
 711
 712 (defun stgit-select ()
 713   "With point on a patch, toggle showing files in the patch.
 714
 715 With point on a file, open the associated file. Opens the target
 716 file for (applied) copies and renames."
 717   (interactive)
 718   (stgit-assert-mode)
 719   (case (get-text-property (point) 'entry-type)
 720     ('patch
 721      (stgit-select-patch))
 722     ('file
 723      (stgit-find-file))
 724     (t
 725      (error "No patch or file on line"))))
 726
 727 (defun stgit-find-file-other-window ()
 728   "Open file at point in other window"
 729   (interactive)
 730   (stgit-assert-mode)
 731   (stgit-find-file t))
 732
 733 (defun stgit-find-file-merge ()
 734   "Open file at point and merge it using `smerge-ediff'."
 735   (interactive)
 736   (stgit-assert-mode)
 737   (stgit-find-file t)
 738   (smerge-ediff))
 739
 740 (defun stgit-quit ()
 741   "Hide the stgit buffer."
 742   (interactive)
 743   (stgit-assert-mode)
 744   (bury-buffer))
 745
 746 (defun stgit-git-status ()
 747   "Show status using `git-status'."
 748   (interactive)
 749   (stgit-assert-mode)
 750   (unless (fboundp 'git-status)
 751     (error "The stgit-git-status command requires git-status"))
 752   (let ((dir default-directory))
 753     (save-selected-window
 754       (pop-to-buffer nil)
 755       (git-status dir))))
 756
 757 (defun stgit-goal-column ()
 758   "Return goal column for the current line"
 759   (case (get-text-property (point) 'entry-type)
 760     ('patch 2)
 761     ('file 4)
 762     (t 0)))
 763
 764 (defun stgit-next-line (&optional arg)
 765   "Move cursor vertically down ARG lines"
 766   (interactive "p")
 767   (stgit-assert-mode)
 768   (next-line arg)
 769   (move-to-column (stgit-goal-column)))
 770
 771 (defun stgit-previous-line (&optional arg)
 772   "Move cursor vertically up ARG lines"
 773   (interactive "p")
 774   (stgit-assert-mode)
 775   (previous-line arg)
 776   (move-to-column (stgit-goal-column)))
 777
 778 (defun stgit-next-patch (&optional arg)
 779   "Move cursor down ARG patches."
 780   (interactive "p")
 781   (stgit-assert-mode)
 782   (ewoc-goto-next stgit-ewoc (or arg 1))
 783   (move-to-column goal-column))
 784
 785 (defun stgit-previous-patch (&optional arg)
 786   "Move cursor up ARG patches."
 787   (interactive "p")
 788   (stgit-assert-mode)
 789   (ewoc-goto-prev stgit-ewoc (or arg 1))
 790   (move-to-column goal-column))
 791
 792 (defvar stgit-mode-hook nil
 793   "Run after `stgit-mode' is setup.")
 794
 795 (defvar stgit-mode-map nil
 796   "Keymap for StGit major mode.")
 797
 798 (unless stgit-mode-map
 799   (let ((diff-map   (make-sparse-keymap))
 800         (toggle-map (make-sparse-keymap)))
 801     (suppress-keymap diff-map)
 802     (mapc (lambda (arg) (define-key diff-map (car arg) (cdr arg)))
 803           '(("b" .        stgit-diff-base)
 804             ("c" .        stgit-diff-combined)
 805             ("m" .        stgit-find-file-merge)
 806             ("o" .        stgit-diff-ours)
 807             ("t" .        stgit-diff-theirs)))
 808     (suppress-keymap toggle-map)
 809     (mapc (lambda (arg) (define-key toggle-map (car arg) (cdr arg)))
 810           '(("t" .        stgit-toggle-worktree)
 811             ("i" .        stgit-toggle-ignored)
 812             ("u" .        stgit-toggle-unknown)))
 813     (setq stgit-mode-map (make-keymap))
 814     (suppress-keymap stgit-mode-map)
 815     (mapc (lambda (arg) (define-key stgit-mode-map (car arg) (cdr arg)))
 816           `((" " .        stgit-mark-down)
 817             ("m" .        stgit-mark-down)
 818             ("\d" .       stgit-unmark-up)
 819             ("u" .        stgit-unmark-down)
 820             ("?" .        stgit-help)
 821             ("h" .        stgit-help)
 822             ("\C-p" .     stgit-previous-line)
 823             ("\C-n" .     stgit-next-line)
 824             ([up] .       stgit-previous-line)
 825             ([down] .     stgit-next-line)
 826             ("p" .        stgit-previous-patch)
 827             ("n" .        stgit-next-patch)
 828             ("\M-{" .     stgit-previous-patch)
 829             ("\M-}" .     stgit-next-patch)
 830             ("s" .        stgit-git-status)
 831             ("g" .        stgit-reload-or-repair)
 832             ("r" .        stgit-refresh)
 833             ("\C-c\C-r" . stgit-rename)
 834             ("e" .        stgit-edit)
 835             ("M" .        stgit-move-patches)
 836             ("S" .        stgit-squash)
 837             ("N" .        stgit-new)
 838             ("c" .        stgit-new-and-refresh)
 839             ("\C-c\C-c" . stgit-commit)
 840             ("\C-c\C-u" . stgit-uncommit)
 841             ("U" .        stgit-revert)
 842             ("R" .        stgit-resolve-file)
 843             ("\r" .       stgit-select)
 844             ("+" .        stgit-expand)
 845             ("-" .        stgit-collapse)
 846             ("o" .        stgit-find-file-other-window)
 847             ("i" .        stgit-toggle-index)
 848             (">" .        stgit-push-next)
 849             ("<" .        stgit-pop-next)
 850             ("P" .        stgit-push-or-pop)
 851             ("G" .        stgit-goto)
 852             ("=" .        stgit-diff)
 853             ("D" .        stgit-delete)
 854             ([?\C-/] .    stgit-undo)
 855             ("\C-_" .     stgit-undo)
 856             ([?\C-c ?\C-/] . stgit-redo)
 857             ("\C-c\C-_" . stgit-redo)
 858             ("B" .        stgit-branch)
 859             ("\C-c\C-b" . stgit-rebase)
 860             ("t" .        ,toggle-map)
 861             ("d" .        ,diff-map)
 862             ("q" .        stgit-quit))))
 863
 864   (let ((at-unmerged-file '(let ((file (stgit-patched-file-at-point)))
 865                              (and file (eq (stgit-file-status file)
 866                                            'unmerged))))
 867         (patch-collapsed-p '(lambda (p) (not (memq p stgit-expanded-patches)))))
 868     (easy-menu-define stgit-menu stgit-mode-map
 869       "StGit Menu"
 870       `("StGit"
 871         ["Reload" stgit-reload-or-repair
 872          :help "Reload StGit status from disk"]
 873         ["Repair" stgit-repair
 874          :keys "\\[universal-argument] \\[stgit-reload-or-repair]"
 875          :help "Repair StGit metadata"]
 876         "-"
 877         ["Undo" stgit-undo t]
 878         ["Redo" stgit-redo t]
 879         "-"
 880         ["Git status" stgit-git-status :active (fboundp 'git-status)]
 881         "-"
 882         ["New patch" stgit-new-and-refresh
 883          :help "Create a new patch from changes in index or work tree"
 884          :active (not (and (stgit-index-empty-p) (stgit-work-tree-empty-p)))]
 885         ["New empty patch" stgit-new
 886          :help "Create a new, empty patch"]
 887         ["(Un)mark patch" stgit-toggle-mark
 888          :label (if (memq (stgit-patch-name-at-point nil t)
 889                           stgit-marked-patches)
 890                     "Unmark patch" "Mark patch")
 891          :active (stgit-patch-name-at-point nil t)]
 892         ["Expand/collapse patch"
 893          (let ((patches (stgit-patches-marked-or-at-point)))
 894            (if (member-if ,patch-collapsed-p patches)
 895                (stgit-expand patches)
 896              (stgit-collapse patches)))
 897          :label (if (member-if ,patch-collapsed-p
 898                                (stgit-patches-marked-or-at-point))
 899                     "Expand patches"
 900                   "Collapse patches")
 901          :active (stgit-patches-marked-or-at-point)]
 902         ["Edit patch" stgit-edit
 903          :help "Edit patch comment"
 904          :active (stgit-patch-name-at-point nil t)]
 905         ["Rename patch" stgit-rename :active (stgit-patch-name-at-point nil t)]
 906         ["Push/pop patch" stgit-push-or-pop
 907          :label (if (subsetp (stgit-patches-marked-or-at-point nil t)
 908                              (stgit-applied-patchsyms t))
 909                     "Pop patches" "Push patches")]
 910         ["Delete patches" stgit-delete
 911          :active (stgit-patches-marked-or-at-point nil t)]
 912         "-"
 913         ["Move patches" stgit-move-patches
 914          :active stgit-marked-patches
 915          :help "Move marked patch(es) to point"]
 916         ["Squash patches" stgit-squash
 917          :active (> (length stgit-marked-patches) 1)
 918          :help "Merge marked patches into one"]
 919         "-"
 920         ["Refresh top patch" stgit-refresh
 921          :active (not (and (stgit-index-empty-p) (stgit-work-tree-empty-p)))
 922          :help "Refresh the top patch with changes in index or work tree"]
 923         ["Refresh this patch" (stgit-refresh t)
 924          :keys "\\[universal-argument] \\[stgit-refresh]"
 925          :help "Refresh marked patch with changes in index or work tree"
 926          :active (and (not (and (stgit-index-empty-p)
 927                                 (stgit-work-tree-empty-p)))
 928                       (stgit-patch-name-at-point nil t))]
 929         "-"
 930         ["Find file" stgit-select
 931          :active (eq (get-text-property (point) 'entry-type) 'file)]
 932         ["Open file" stgit-find-file-other-window
 933          :active (eq (get-text-property (point) 'entry-type) 'file)]
 934         ["Toggle file index" stgit-toggle-index
 935          :active (and (eq (get-text-property (point) 'entry-type) 'file)
 936                       (memq (stgit-patch-name-at-point) '(:work :index)))
 937          :label (if (eq (stgit-patch-name-at-point) :work)
 938                     "Move change to index"
 939                   "Move change to work tree")]
 940         "-"
 941         ["Show diff" stgit-diff
 942          :active (get-text-property (point) 'entry-type)]
 943         ("Merge"
 944          :active (stgit-git-index-unmerged-p)
 945          ["Combined diff" stgit-diff-combined
 946           :active (memq (stgit-patch-name-at-point nil nil) '(:work :index))]
 947          ["Diff against base" stgit-diff-base
 948           :help "Show diff against the common base"
 949           :active (memq (stgit-patch-name-at-point nil nil) '(:work :index))]
 950          ["Diff against ours" stgit-diff-ours
 951           :help "Show diff against our branch"
 952           :active (memq (stgit-patch-name-at-point nil nil) '(:work :index))]
 953          ["Diff against theirs" stgit-diff-theirs
 954           :help "Show diff against their branch"
 955           :active (memq (stgit-patch-name-at-point nil nil) '(:work :index))]
 956          "-"
 957          ["Interactive merge" stgit-find-file-merge
 958           :help "Interactively merge the file"
 959           :active ,at-unmerged-file]
 960          ["Resolve file" stgit-resolve-file
 961           :help "Mark file conflict as resolved"
 962           :active ,at-unmerged-file]
 963          )
 964         "-"
 965         ["Show index & work tree" stgit-toggle-worktree :style toggle
 966          :selected stgit-show-worktree]
 967         ["Show unknown files" stgit-toggle-unknown :style toggle
 968          :selected stgit-show-unknown :active stgit-show-worktree]
 969         ["Show ignored files" stgit-toggle-ignored :style toggle
 970          :selected stgit-show-ignored :active stgit-show-worktree]
 971         "-"
 972         ["Switch branches" stgit-branch t
 973          :help "Switch to another branch"]
 974         ["Rebase branch" stgit-rebase t
 975          :help "Rebase the current branch"]
 976         ))))
 977
 978 ;; disable tool bar editing buttons
 979 (put 'stgit-mode 'mode-class 'special)
 980
 981 (defun stgit-mode ()
 982   "Major mode for interacting with StGit.
 983
 984 Start StGit using \\[stgit].
 985
 986 Basic commands:
 987 \\<stgit-mode-map>\
 988 \\[stgit-help]  Show this help text
 989 \\[stgit-quit]  Hide the StGit buffer
 990 \\[describe-bindings]   Show all key bindings
 991
 992 \\[stgit-reload-or-repair]      Reload the StGit buffer
 993 \\[universal-argument] \\[stgit-reload-or-repair]       Repair StGit metadata
 994
 995 \\[stgit-undo]  Undo most recent StGit operation
 996 \\[stgit-redo]  Undo recent undo
 997
 998 \\[stgit-git-status]    Run `git-status' (if available)
 999
1000 Movement commands:
1001 \\[stgit-previous-line] Move to previous line
1002 \\[stgit-next-line]     Move to next line
1003 \\[stgit-previous-patch]        Move to previous patch
1004 \\[stgit-next-patch]    Move to next patch
1005
1006 \\[stgit-mark-down]     Mark patch and move down
1007 \\[stgit-unmark-up]     Unmark patch and move up
1008 \\[stgit-unmark-down]   Unmark patch and move down
1009
1010 Commands for patches:
1011 \\[stgit-select]        Toggle showing changed files in patch
1012 \\[stgit-refresh]       Refresh patch with changes in index or work tree
1013 \\[stgit-diff]  Show the patch log and diff
1014
1015 \\[stgit-expand]        Show changes in marked patches
1016 \\[stgit-collapse]      Hide changes in marked patches
1017
1018 \\[stgit-new]   Create a new, empty patch
1019 \\[stgit-new-and-refresh]       Create a new patch from index or work tree
1020 \\[stgit-rename]        Rename patch
1021 \\[stgit-edit]  Edit patch description
1022 \\[stgit-delete]        Delete patch(es)
1023
1024 \\[stgit-revert]        Revert all changes in index or work tree
1025 \\[stgit-toggle-index]  Toggle all changes between index and work tree
1026
1027 \\[stgit-push-next]     Push next patch onto stack
1028 \\[stgit-pop-next]      Pop current patch from stack
1029 \\[stgit-push-or-pop]   Push or pop patch at point
1030 \\[stgit-goto]  Make current patch current by popping or pushing
1031
1032 \\[stgit-squash]        Squash (meld together) patches
1033 \\[stgit-move-patches]  Move patch(es) to point
1034
1035 \\[stgit-commit]        Commit patch(es)
1036 \\[stgit-uncommit]      Uncommit patch(es)
1037
1038 Commands for files:
1039 \\[stgit-select]        Open the file in this window
1040 \\[stgit-find-file-other-window]        Open the file in another window
1041 \\[stgit-diff]  Show the file's diff
1042
1043 \\[stgit-toggle-index]  Toggle change between index and work tree
1044 \\[stgit-revert]        Revert changes to file
1045
1046 Display commands:
1047 \\[stgit-toggle-worktree]       Toggle showing index and work tree
1048 \\[stgit-toggle-unknown]        Toggle showing unknown files
1049 \\[stgit-toggle-ignored]        Toggle showing ignored files
1050
1051 Commands for diffs:
1052 \\[stgit-diff]  Show diff of patch or file
1053 \\[stgit-diff-base]     Show diff against the merge base
1054 \\[stgit-diff-ours]     Show diff against our branch
1055 \\[stgit-diff-theirs]   Show diff against their branch
1056
1057   With one prefix argument (e.g., \\[universal-argument] \\[stgit-diff]), \
1058 ignore space changes.
1059   With two prefix arguments (e.g., \\[universal-argument] \
1060 \\[universal-argument] \\[stgit-diff]), ignore all space changes.
1061
1062 Commands for merge conflicts:
1063 \\[stgit-find-file-merge]       Resolve conflicts using `smerge-ediff'
1064 \\[stgit-resolve-file]  Mark unmerged file as resolved
1065
1066 Commands for branches:
1067 \\[stgit-branch]        Switch to another branch
1068 \\[stgit-rebase]        Rebase the current branch
1069
1070 Customization variables:
1071 `stgit-abbreviate-copies-and-renames'
1072 `stgit-default-show-worktree'
1073 `stgit-find-copies-harder'
1074 `stgit-show-worktree-mode'
1075
1076 See also \\[customize-group] for the \"stgit\" group."
1077   (kill-all-local-variables)
1078   (buffer-disable-undo)
1079   (setq mode-name "StGit"
1080         major-mode 'stgit-mode
1081         goal-column 2)
1082   (use-local-map stgit-mode-map)
1083   (set (make-local-variable 'list-buffers-directory) default-directory)
1084   (set (make-local-variable 'stgit-marked-patches) nil)
1085   (set (make-local-variable 'stgit-expanded-patches) (list :work :index))
1086   (set (make-local-variable 'stgit-show-worktree) stgit-default-show-worktree)
1087   (set (make-local-variable 'stgit-index-node) nil)
1088   (set (make-local-variable 'stgit-worktree-node) nil)
1089   (set (make-local-variable 'parse-sexp-lookup-properties) t)
1090   (set-variable 'truncate-lines 't)
1091   (add-hook 'after-save-hook 'stgit-update-saved-file)
1092   (run-hooks 'stgit-mode-hook))
1093
1094 (defun stgit-update-saved-file ()
1095   (let* ((file (expand-file-name buffer-file-name))
1096          (dir (file-name-directory file))
1097          (gitdir (condition-case nil (git-get-top-dir dir)
1098                    (error nil)))
1099          (buffer (and gitdir (stgit-find-buffer gitdir))))
1100     (when buffer
1101       (with-current-buffer buffer
1102         (stgit-refresh-worktree)))))
1103
1104 (defun stgit-add-mark (patchsym)
1105   "Mark the patch PATCHSYM."
1106   (setq stgit-marked-patches (cons patchsym stgit-marked-patches)))
1107
1108 (defun stgit-remove-mark (patchsym)
1109   "Unmark the patch PATCHSYM."
1110   (setq stgit-marked-patches (delq patchsym stgit-marked-patches)))
1111
1112 (defun stgit-clear-marks ()
1113   "Unmark all patches."
1114   (setq stgit-marked-patches '()))
1115
1116 (defun stgit-patch-at-point (&optional cause-error)
1117   (get-text-property (point) 'patch-data))
1118
1119 (defun stgit-patch-name-at-point (&optional cause-error only-patches)
1120   "Return the patch name on the current line as a symbol.
1121 If CAUSE-ERROR is not nil, signal an error if none found.
1122 If ONLY-PATCHES is not nil, only allow real patches, and not
1123 index or work tree."
1124   (let ((patch (stgit-patch-at-point)))
1125     (and patch
1126          only-patches
1127          (memq (stgit-patch-status patch) '(work index))
1128          (setq patch nil))
1129     (cond (patch
1130            (stgit-patch-name patch))
1131           (cause-error
1132            (error "No patch on this line")))))
1133
1134 (defun stgit-patched-file-at-point ()
1135   (get-text-property (point) 'file-data))
1136
1137 (defun stgit-patches-marked-or-at-point (&optional cause-error only-patches)
1138   "Return the symbols of the marked patches, or the patch on the current line.
1139 If CAUSE-ERRROR is not nil, signal an error if none found.
1140 If ONLY-PATCHES is not nil, do not include index or work tree."
1141   (if stgit-marked-patches
1142       stgit-marked-patches
1143     (let ((patch (stgit-patch-name-at-point nil only-patches)))
1144       (cond (patch (list patch))
1145             (cause-error (error "No patches marked or at this line"))
1146             (t nil)))))
1147
1148 (defun stgit-goto-patch (patchsym &optional file)
1149   "Move point to the line containing patch PATCHSYM.
1150 If that patch cannot be found, do nothing.
1151
1152 If the patch was found and FILE is not nil, instead move to that
1153 file's line. If FILE cannot be found, stay on the line of
1154 PATCHSYM."
1155   (let ((node (ewoc-nth stgit-ewoc 0)))
1156     (while (and node (not (eq (stgit-patch-name (ewoc-data node))
1157                               patchsym)))
1158       (setq node (ewoc-next stgit-ewoc node)))
1159     (when (and node file)
1160       (let* ((file-ewoc (stgit-patch-files-ewoc (ewoc-data node)))
1161              (file-node (ewoc-nth file-ewoc 0)))
1162         (while (and file-node (not (equal (stgit-file-file (ewoc-data file-node)) file)))
1163           (setq file-node (ewoc-next file-ewoc file-node)))
1164         (when file-node
1165           (ewoc-goto-node file-ewoc file-node)
1166           (move-to-column (stgit-goal-column))
1167           (setq node nil))))
1168     (when node
1169       (ewoc-goto-node stgit-ewoc node)
1170       (move-to-column goal-column))))
1171
1172 (defun stgit-init ()
1173   "Run stg init."
1174   (interactive)
1175   (stgit-assert-mode)
1176   (stgit-capture-output nil
1177     (stgit-run "init"))
1178   (stgit-reload))
1179
1180 (defun stgit-toggle-mark ()
1181   "Toggle mark on the patch under point."
1182   (interactive)
1183   (stgit-assert-mode)
1184   (if (memq (stgit-patch-name-at-point t t) stgit-marked-patches)
1185       (stgit-unmark)
1186     (stgit-mark)))
1187
1188 (defun stgit-mark ()
1189   "Mark the patch under point."
1190   (interactive)
1191   (stgit-assert-mode)
1192   (let* ((node (ewoc-locate stgit-ewoc))
1193          (patch (ewoc-data node))
1194          (name (stgit-patch-name patch)))
1195     (when (eq name :work)
1196       (error "Cannot mark the work tree"))
1197     (when (eq name :index)
1198       (error "Cannot mark the index"))
1199     (stgit-add-mark (stgit-patch-name patch))
1200     (let ((column (current-column)))
1201       (ewoc-invalidate stgit-ewoc node)
1202       (move-to-column column))))
1203
1204 (defun stgit-mark-down ()
1205   "Mark the patch under point and move to the next patch."
1206   (interactive)
1207   (stgit-mark)
1208   (stgit-next-patch))
1209
1210 (defun stgit-unmark ()
1211   "Remove mark from the patch on the current line."
1212   (interactive)
1213   (stgit-assert-mode)
1214   (let* ((node (ewoc-locate stgit-ewoc))
1215          (patch (ewoc-data node)))
1216     (stgit-remove-mark (stgit-patch-name patch))
1217     (let ((column (current-column)))
1218       (ewoc-invalidate stgit-ewoc node)
1219       (move-to-column column))))
1220
1221 (defun stgit-unmark-up ()
1222   "Remove mark from the patch on the previous line."
1223   (interactive)
1224   (stgit-assert-mode)
1225   (stgit-previous-patch)
1226   (stgit-unmark))
1227
1228 (defun stgit-unmark-down ()
1229   "Remove mark from the patch on the current line."
1230   (interactive)
1231   (stgit-assert-mode)
1232   (stgit-unmark)
1233   (stgit-next-patch))
1234
1235 (defun stgit-rename (name)
1236   "Rename the patch under point to NAME."
1237   (interactive (list
1238                 (read-string "Patch name: "
1239                              (symbol-name (stgit-patch-name-at-point t t)))))
1240   (stgit-assert-mode)
1241   (let ((old-patchsym (stgit-patch-name-at-point t t)))
1242     (stgit-capture-output nil
1243       (stgit-run "rename" old-patchsym name))
1244     (let ((name-sym (intern name)))
1245       (when (memq old-patchsym stgit-expanded-patches)
1246         (setq stgit-expanded-patches
1247               (cons name-sym (delq old-patchsym stgit-expanded-patches))))
1248       (when (memq old-patchsym stgit-marked-patches)
1249         (setq stgit-marked-patches
1250               (cons name-sym (delq old-patchsym stgit-marked-patches))))
1251       (stgit-reload)
1252       (stgit-goto-patch name-sym))))
1253
1254 (defun stgit-reload-or-repair (repair)
1255   "Update the contents of the StGit buffer (`stgit-reload').
1256
1257 With a prefix argument, repair the StGit metadata if the branch
1258 was modified with git commands (`stgit-repair')."
1259   (interactive "P")
1260   (stgit-assert-mode)
1261   (if repair
1262       (stgit-repair)
1263     (stgit-reload)))
1264
1265 (defun stgit-repair ()
1266   "Run stg repair."
1267   (interactive)
1268   (stgit-assert-mode)
1269   (stgit-capture-output nil
1270     (stgit-run "repair"))
1271   (stgit-reload))
1272
1273 (defun stgit-available-branches ()
1274   "Returns a list of the available stg branches"
1275   (let ((output (with-output-to-string
1276                   (stgit-run "branch" "--list")))
1277         (start 0)
1278         result)
1279     (while (string-match "^>?\\s-+s\\s-+\\(\\S-+\\)" output start)
1280       (setq result (cons (match-string 1 output) result))
1281       (setq start (match-end 0)))
1282     result))
1283
1284 (defun stgit-branch (branch)
1285   "Switch to branch BRANCH."
1286   (interactive (list (completing-read "Switch to branch: "
1287                                       (stgit-available-branches))))
1288   (stgit-assert-mode)
1289   (stgit-capture-output nil (stgit-run "branch" "--" branch))
1290   (stgit-reload))
1291
1292 (defun stgit-available-refs (&optional omit-stgit)
1293   "Returns a list of the available git refs.
1294 If OMIT-STGIT is not nil, filter out \"resf/heads/*.stgit\"."
1295   (let* ((output (with-output-to-string
1296                    (stgit-run-git-silent "for-each-ref" "--format=%(refname)"
1297                                          "refs/tags" "refs/heads"
1298                                          "refs/remotes")))
1299          (result (split-string output "\n" t)))
1300     (mapcar (lambda (s)
1301               (if (string-match "^refs/\\(heads\\|tags\\|remotes\\)/" s)
1302                   (substring s (match-end 0))
1303                 s))
1304             (if omit-stgit
1305                 (delete-if (lambda (s)
1306                              (string-match "^refs/heads/.*\\.stgit$" s))
1307                            result)
1308               result))))
1309
1310 (defun stgit-rebase (new-base)
1311   "Rebase to NEW-BASE."
1312   (interactive (list (completing-read "Rebase to: "
1313                                       (stgit-available-refs t))))
1314   (stgit-assert-mode)
1315   (stgit-capture-output nil (stgit-run "rebase" new-base))
1316   (stgit-reload))
1317
1318 (defun stgit-commit (count)
1319   "Run stg commit on COUNT commits.
1320 Interactively, the prefix argument is used as COUNT.
1321 A negative COUNT will uncommit instead."
1322   (interactive "p")
1323   (stgit-assert-mode)
1324   (if (< count 0)
1325       (stgit-uncommit (- count))
1326     (stgit-capture-output nil (stgit-run "commit" "-n" count))
1327     (stgit-reload)))
1328
1329 (defun stgit-uncommit (count)
1330   "Run stg uncommit on COUNT commits.
1331 Interactively, the prefix argument is used as COUNT.
1332 A negative COUNT will commit instead."
1333   (interactive "p")
1334   (stgit-assert-mode)
1335   (if (< count 0)
1336       (stgit-commit (- count))
1337     (stgit-capture-output nil (stgit-run "uncommit" "-n" count))
1338     (stgit-reload)))
1339
1340 (defun stgit-neighbour-file ()
1341   "Return the file name of the next file after point, or the
1342 previous file if point is at the last file within a patch."
1343   (let ((old-point (point))
1344         neighbour-file)
1345     (and (zerop (forward-line 1))
1346          (let ((f (stgit-patched-file-at-point)))
1347            (and f (setq neighbour-file (stgit-file-file f)))))
1348     (goto-char old-point)
1349     (unless neighbour-file
1350       (and (zerop (forward-line -1))
1351            (let ((f (stgit-patched-file-at-point)))
1352              (and f (setq neighbour-file (stgit-file-file f)))))
1353       (goto-char old-point))
1354     neighbour-file))
1355
1356 (defun stgit-revert-file ()
1357   "Revert the file at point, which must be in the index or the
1358 working tree."
1359   (interactive)
1360   (stgit-assert-mode)
1361   (let* ((patched-file (or (stgit-patched-file-at-point)
1362                            (error "No file on the current line")))
1363          (patch-name   (stgit-patch-name-at-point))
1364          (file-status  (stgit-file-status patched-file))
1365          (rm-file      (cond ((stgit-file-copy-or-rename patched-file)
1366                               (stgit-file-cr-to patched-file))
1367                              ((eq file-status 'add)
1368                               (stgit-file-file patched-file))))
1369          (co-file      (cond ((eq file-status 'rename)
1370                               (stgit-file-cr-from patched-file))
1371                              ((not (memq file-status '(copy add)))
1372                               (stgit-file-file patched-file))))
1373          (next-file    (stgit-neighbour-file)))
1374
1375     (unless (memq patch-name '(:work :index))
1376       (error "No index or working tree file on this line"))
1377
1378     (when (eq file-status 'ignore)
1379       (error "Cannot revert ignored files"))
1380
1381     (when (eq file-status 'unknown)
1382       (error "Cannot revert unknown files"))
1383
1384     (let ((nfiles (+ (if rm-file 1 0) (if co-file 1 0))))
1385       (when (yes-or-no-p (format "Revert %d file%s? "
1386                                  nfiles
1387                                  (if (= nfiles 1) "" "s")))
1388         (stgit-capture-output nil
1389           (when rm-file
1390             (stgit-run-git "rm" "-f" "-q" "--" rm-file))
1391           (when co-file
1392             (stgit-run-git "checkout" "HEAD" co-file)))
1393         (stgit-reload)
1394         (stgit-goto-patch patch-name next-file)))))
1395
1396 (defun stgit-revert ()
1397   "Revert the change at point, which must be the index, the work
1398 tree, or a single change in either."
1399   (interactive)
1400   (stgit-assert-mode)
1401   (let ((patched-file (stgit-patched-file-at-point)))
1402     (if patched-file
1403         (stgit-revert-file)
1404       (let* ((patch-name (or (stgit-patch-name-at-point)
1405                              (error "No patch or file at point")))
1406              (patch-desc (case patch-name
1407                            (:index "index")
1408                            (:work  "work tree")
1409                            (t (error (substitute-command-keys
1410                                       "Use \\[stgit-delete] to delete a patch"))))))
1411         (when (if (eq patch-name :work)
1412                   (stgit-work-tree-empty-p)
1413                 (stgit-index-empty-p))
1414           (error (format "There are no changes in the %s to revert"
1415                          patch-desc)))
1416         (and (eq patch-name :index)
1417              (not (stgit-work-tree-empty-p))
1418              (error "Cannot revert index as work tree contains unstaged changes"))
1419
1420         (when (yes-or-no-p (format "Revert all changes in the %s? "
1421                                    patch-desc))
1422           (if (eq patch-name :index)
1423               (stgit-run-git-silent "reset" "--hard" "-q")
1424             (stgit-run-git-silent "checkout" "--" "."))
1425           (stgit-refresh-index)
1426           (stgit-refresh-worktree)
1427           (stgit-goto-patch patch-name))))))
1428
1429 (defun stgit-resolve-file ()
1430   "Resolve conflict in the file at point."
1431   (interactive)
1432   (stgit-assert-mode)
1433   (let* ((patched-file (stgit-patched-file-at-point))
1434          (patch        (stgit-patch-at-point))
1435          (patch-name   (and patch (stgit-patch-name patch)))
1436          (status       (and patched-file (stgit-file-status patched-file))))
1437
1438     (unless (memq patch-name '(:work :index))
1439       (error "No index or working tree file on this line"))
1440
1441     (unless (eq status 'unmerged)
1442       (error "No conflict to resolve at the current line"))
1443
1444     (stgit-capture-output nil
1445       (stgit-move-change-to-index (stgit-file-file patched-file)))
1446
1447     (stgit-reload)))
1448
1449 (defun stgit-push-next (npatches)
1450   "Push the first unapplied patch.
1451 With numeric prefix argument, push that many patches."
1452   (interactive "p")
1453   (stgit-assert-mode)
1454   (stgit-capture-output nil (stgit-run "push" "-n" npatches))
1455   (stgit-reload)
1456   (stgit-refresh-git-status))
1457
1458 (defun stgit-pop-next (npatches)
1459   "Pop the topmost applied patch.
1460 With numeric prefix argument, pop that many patches."
1461   (interactive "p")
1462   (stgit-assert-mode)
1463   (stgit-capture-output nil (stgit-run "pop" "-n" npatches))
1464   (stgit-reload)
1465   (stgit-refresh-git-status))
1466
1467 (defun stgit-applied-patches (&optional only-patches)
1468   "Return a list of the applied patches.
1469
1470 If ONLY-PATCHES is not nil, exclude index and work tree."
1471   (let ((states (if only-patches
1472                     '(applied top)
1473                   '(applied top index work)))
1474         result)
1475     (ewoc-map (lambda (patch) (when (memq (stgit-patch-status patch) states)
1476                                 (setq result (cons patch result))))
1477               stgit-ewoc)
1478     result))
1479
1480 (defun stgit-applied-patchsyms (&optional only-patches)
1481   "Return a list of the symbols of the applied patches.
1482
1483 If ONLY-PATCHES is not nil, exclude index and work tree."
1484   (mapcar #'stgit-patch-name (stgit-applied-patches only-patches)))
1485
1486 (defun stgit-push-or-pop ()
1487   "Push or pop the marked patches."
1488   (interactive)
1489   (stgit-assert-mode)
1490   (let* ((patchsyms (stgit-patches-marked-or-at-point t t))
1491          (applied-syms (stgit-applied-patchsyms t))
1492          (unapplied (set-difference patchsyms applied-syms)))
1493     (stgit-capture-output nil
1494       (apply 'stgit-run
1495              (if unapplied "push" "pop")
1496              "--"
1497              (stgit-sort-patches (if unapplied unapplied patchsyms)))))
1498   (stgit-reload))
1499
1500 (defun stgit-goto ()
1501   "Go to the patch on the current line."
1502   (interactive)
1503   (stgit-assert-mode)
1504   (let ((patchsym (stgit-patch-name-at-point t)))
1505     (stgit-capture-output nil
1506       (stgit-run "goto" patchsym))
1507     (stgit-reload)))
1508
1509 (defun stgit-id (patchsym)
1510   "Return the git commit id for PATCHSYM.
1511 If PATCHSYM is a keyword, returns PATCHSYM unmodified."
1512   (if (keywordp patchsym)
1513       patchsym
1514     (let ((result (with-output-to-string
1515                     (stgit-run-silent "id" patchsym))))
1516       (unless (string-match "^\\([0-9A-Fa-f]\\{40\\}\\)$" result)
1517         (error "Cannot find commit id for %s" patchsym))
1518       (match-string 1 result))))
1519
1520 (defun stgit-show-patch (unmerged-stage ignore-whitespace)
1521   "Show the patch on the current line.
1522
1523 UNMERGED-STAGE is the argument to `git-diff' that that selects
1524 which stage to diff against in the case of unmerged files."
1525   (let ((space-arg (when (numberp ignore-whitespace)
1526                      (cond ((> ignore-whitespace 4)
1527                             "--ignore-all-space")
1528                            ((> ignore-whitespace 1)
1529                             "--ignore-space-change"))))
1530         (patch-name (stgit-patch-name-at-point t)))
1531     (stgit-capture-output "*StGit patch*"
1532       (case (get-text-property (point) 'entry-type)
1533         ('file
1534          (let* ((patched-file (stgit-patched-file-at-point))
1535                 (patch-id (let ((id (stgit-id patch-name)))
1536                             (if (and (eq id :index)
1537                                      (eq (stgit-file-status patched-file)
1538                                          'unmerged))
1539                                 :work
1540                               id)))
1541                 (args (append (and space-arg (list space-arg))
1542                               (and (stgit-file-cr-from patched-file)
1543                                    (list (stgit-find-copies-harder-diff-arg)))
1544                               (cond ((eq patch-id :index)
1545                                      '("--cached"))
1546                                     ((eq patch-id :work)
1547                                      (list unmerged-stage))
1548                                     (t
1549                                      (list (concat patch-id "^") patch-id)))
1550                               '("--")
1551                               (if (stgit-file-copy-or-rename patched-file)
1552                                   (list (stgit-file-cr-from patched-file)
1553                                         (stgit-file-cr-to patched-file))
1554                                 (list (stgit-file-file patched-file))))))
1555            (apply 'stgit-run-git "diff" args)))
1556         ('patch
1557          (let* ((patch-id (stgit-id patch-name)))
1558            (if (or (eq patch-id :index) (eq patch-id :work))
1559                (apply 'stgit-run-git "diff"
1560                       (stgit-find-copies-harder-diff-arg)
1561                       (append (and space-arg (list space-arg))
1562                               (if (eq patch-id :index)
1563                                   '("--cached")
1564                                 (list unmerged-stage))))
1565              (let ((args (append '("show" "-O" "--patch-with-stat" "-O" "-M")
1566                                  (and space-arg (list "-O" space-arg))
1567                                  (list (stgit-patch-name-at-point)))))
1568                (apply 'stgit-run args)))))
1569         (t
1570          (error "No patch or file at point")))
1571       (with-current-buffer standard-output
1572         (goto-char (point-min))
1573         (diff-mode)))))
1574
1575 (defmacro stgit-define-diff (name diff-arg &optional unmerged-action)
1576   `(defun ,name (&optional ignore-whitespace)
1577      ,(format "Show the patch on the current line.
1578
1579 %sWith a prefix argument, ignore whitespace. With a prefix argument
1580 greater than four (e.g., \\[universal-argument] \
1581 \\[universal-argument] \\[%s]), ignore all whitespace."
1582               (if unmerged-action
1583                   (format "For unmerged files, %s.\n\n" unmerged-action)
1584                 "")
1585               name)
1586      (interactive "p")
1587      (stgit-assert-mode)
1588      (stgit-show-patch ,diff-arg ignore-whitespace)))
1589
1590 (stgit-define-diff stgit-diff
1591                    "--ours" nil)
1592 (stgit-define-diff stgit-diff-ours
1593                    "--ours"
1594                    "diff against our branch")
1595 (stgit-define-diff stgit-diff-theirs
1596                    "--theirs"
1597                    "diff against their branch")
1598 (stgit-define-diff stgit-diff-base
1599                    "--base"
1600                    "diff against the merge base")
1601 (stgit-define-diff stgit-diff-combined
1602                    "--cc"
1603                    "show a combined diff")
1604
1605 (defun stgit-move-change-to-index (file &optional force)
1606   "Copies the work tree state of FILE to index, using git add or git rm.
1607
1608 If FORCE is not nil, use --force."
1609   (let ((op (if (or (file-exists-p file) (file-symlink-p file))
1610                 '("add") '("rm" "-q"))))
1611     (stgit-capture-output "*git output*"
1612       (apply 'stgit-run-git (append op (and force '("--force"))
1613                                     '("--") (list file))))))
1614
1615 (defun stgit-remove-change-from-index (file)
1616   "Unstages the change in FILE from the index"
1617   (stgit-capture-output "*git output*"
1618     (stgit-run-git "reset" "-q" "--" file)))
1619
1620 (defun stgit-git-index-unmerged-p ()
1621   (let (result)
1622     (with-output-to-string
1623       (setq result (not (zerop (stgit-run-git-silent "diff-index" "--cached"
1624                                                      "--diff-filter=U"
1625                                                      "--quiet" "HEAD")))))
1626     result))
1627
1628 (defun stgit-file-toggle-index ()
1629   "Move modified file in or out of the index.
1630
1631 Leaves the point where it is, but moves the mark to where the
1632 file ended up. You can then jump to the file with \
1633 \\[exchange-point-and-mark]."
1634   (interactive)
1635   (stgit-assert-mode)
1636   (let* ((patched-file   (or (stgit-patched-file-at-point)
1637                              (error "No file on the current line")))
1638          (patched-status (stgit-file-status patched-file)))
1639     (when (eq patched-status 'unmerged)
1640       (error (substitute-command-keys "Use \\[stgit-resolve-file] to move an unmerged file to the index")))
1641     (let* ((patch      (stgit-patch-at-point))
1642            (patch-name (stgit-patch-name patch))
1643            (mark-file  (if (eq patched-status 'rename)
1644                            (stgit-file-cr-to patched-file)
1645                          (stgit-file-file patched-file)))
1646            (point-file  (if (eq patched-status 'rename)
1647                             (stgit-file-cr-from patched-file)
1648                           (stgit-neighbour-file))))
1649
1650       (cond ((eq patch-name :work)
1651              (stgit-move-change-to-index (stgit-file-file patched-file)
1652                                          (eq patched-status 'ignore)))
1653             ((eq patch-name :index)
1654              (stgit-remove-change-from-index (stgit-file-file patched-file)))
1655             (t
1656              (error "Can only move files between working tree and index")))
1657       (stgit-refresh-worktree)
1658       (stgit-refresh-index)
1659       (stgit-goto-patch (if (eq patch-name :index) :work :index) mark-file)
1660       (push-mark nil t t)
1661       (stgit-goto-patch patch-name point-file))))
1662
1663 (defun stgit-toggle-index ()
1664   "Move change in or out of the index.
1665
1666 Works on index and work tree, as well as files in either.
1667
1668 Leaves the point where it is, but moves the mark to where the
1669 file ended up. You can then jump to the file with \
1670 \\[exchange-point-and-mark]."
1671   (interactive)
1672   (stgit-assert-mode)
1673   (if (stgit-patched-file-at-point)
1674       (stgit-file-toggle-index)
1675     (let ((patch-name (stgit-patch-name-at-point)))
1676       (unless (memq patch-name '(:index :work))
1677         (error "Can only move changes between working tree and index"))
1678       (when (stgit-git-index-unmerged-p)
1679         (error "Resolve unmerged changes with \\[stgit-resolve-file] first"))
1680       (if (if (eq patch-name :index)
1681               (stgit-index-empty-p)
1682             (stgit-work-tree-empty-p))
1683           (message "No changes to be moved")
1684         (stgit-capture-output nil
1685           (if (eq patch-name :work)
1686               (stgit-run-git "add" "--update")
1687             (stgit-run-git "reset" "--mixed" "-q")))
1688         (stgit-refresh-worktree)
1689         (stgit-refresh-index))
1690       (stgit-goto-patch (if (eq patch-name :index) :work :index)))))
1691
1692 (defun stgit-edit ()
1693   "Edit the patch on the current line."
1694   (interactive)
1695   (stgit-assert-mode)
1696   (let ((patchsym (stgit-patch-name-at-point t t))
1697         (edit-buf (get-buffer-create "*StGit edit*"))
1698         (dir default-directory))
1699     (log-edit 'stgit-confirm-edit t nil edit-buf)
1700     (set (make-local-variable 'stgit-edit-patchsym) patchsym)
1701     (setq default-directory dir)
1702     (let ((standard-output edit-buf))
1703       (stgit-run-silent "edit" "--save-template=-" patchsym))))
1704
1705 (defun stgit-confirm-edit ()
1706   (interactive)
1707   (let ((file (make-temp-file "stgit-edit-")))
1708     (write-region (point-min) (point-max) file)
1709     (stgit-capture-output nil
1710       (stgit-run "edit" "-f" file stgit-edit-patchsym))
1711     (with-current-buffer log-edit-parent-buffer
1712       (stgit-reload))))
1713
1714 (defun stgit-new (add-sign &optional refresh)
1715   "Create a new patch.
1716 With a prefix argument, include a \"Signed-off-by:\" line at the
1717 end of the patch."
1718   (interactive "P")
1719   (stgit-assert-mode)
1720   (let ((edit-buf (get-buffer-create "*StGit edit*"))
1721         (dir default-directory))
1722     (log-edit 'stgit-confirm-new t nil edit-buf)
1723     (setq default-directory dir)
1724     (set (make-local-variable 'stgit-refresh-after-new) refresh)
1725     (when add-sign
1726       (save-excursion
1727         (let ((standard-output (current-buffer)))
1728           (stgit-run-silent "new" "--sign" "--save-template=-"))))))
1729
1730 (defun stgit-confirm-new ()
1731   (interactive)
1732   (let ((file (make-temp-file "stgit-edit-"))
1733         (refresh stgit-refresh-after-new))
1734     (write-region (point-min) (point-max) file)
1735     (stgit-capture-output nil
1736       (stgit-run "new" "-f" file))
1737     (with-current-buffer log-edit-parent-buffer
1738       (if refresh
1739           (stgit-refresh)
1740         (stgit-reload)))))
1741
1742 (defun stgit-new-and-refresh (add-sign)
1743   "Create a new patch and refresh it with the current changes.
1744
1745 With a prefix argument, include a \"Signed-off-by:\" line at the
1746 end of the patch.
1747
1748 This works just like running `stgit-new' followed by `stgit-refresh'."
1749   (interactive "P")
1750   (stgit-assert-mode)
1751   (stgit-new add-sign t))
1752
1753 (defun stgit-create-patch-name (description)
1754   "Create a patch name from a long description"
1755   (let ((patch ""))
1756     (while (> (length description) 0)
1757       (cond ((string-match "\\`[a-zA-Z_-]+" description)
1758              (setq patch (downcase (concat patch
1759                                            (match-string 0 description))))
1760              (setq description (substring description (match-end 0))))
1761             ((string-match "\\` +" description)
1762              (setq patch (concat patch "-"))
1763              (setq description (substring description (match-end 0))))
1764             ((string-match "\\`[^a-zA-Z_-]+" description)
1765              (setq description (substring description (match-end 0))))))
1766     (cond ((= (length patch) 0)
1767            "patch")
1768           ((> (length patch) 20)
1769            (substring patch 0 20))
1770           (t patch))))
1771
1772 (defun stgit-delete (patchsyms &optional spill-p)
1773   "Delete the patches in PATCHSYMS.
1774 Interactively, delete the marked patches, or the patch at point.
1775
1776 With a prefix argument, or SPILL-P, spill the patch contents to
1777 the work tree and index."
1778   (interactive (list (stgit-patches-marked-or-at-point t t)
1779                      current-prefix-arg))
1780   (stgit-assert-mode)
1781   (unless patchsyms
1782     (error "No patches to delete"))
1783   (when (memq :index patchsyms)
1784     (error "Cannot delete the index"))
1785   (when (memq :work  patchsyms)
1786     (error "Cannot delete the work tree"))
1787
1788   (let ((npatches (length patchsyms)))
1789     (when (yes-or-no-p (format "Really delete %d patch%s%s? "
1790                                npatches
1791                                (if (= 1 npatches) "" "es")
1792                                (if spill-p
1793                                    " (spilling contents to index)"
1794                                  "")))
1795       (let ((args (if spill-p
1796                       (cons "--spill" patchsyms)
1797                     patchsyms)))
1798         (stgit-capture-output nil
1799           (apply 'stgit-run "delete" args))
1800         (stgit-reload)))))
1801
1802 (defun stgit-move-patches-target ()
1803   "Return the patchsym indicating a target patch for
1804 `stgit-move-patches'.
1805
1806 This is either the first unmarked patch at or after point, or one
1807 of :top and :bottom if the point is after or before the applied
1808 patches."
1809
1810   (save-excursion
1811     (let (result)
1812       (while (not result)
1813         (let ((patchsym (stgit-patch-name-at-point)))
1814           (cond ((memq patchsym '(:work :index)) (setq result :top))
1815                 (patchsym (if (memq patchsym stgit-marked-patches)
1816                               (stgit-next-patch)
1817                             (setq result patchsym)))
1818                 ((re-search-backward "^>" nil t) (setq result :top))
1819                 (t (setq result :bottom)))))
1820       result)))
1821
1822 (defun stgit-sort-patches (patchsyms)
1823   "Returns the list of patches in PATCHSYMS sorted according to
1824 their position in the patch series, bottommost first.
1825
1826 PATCHSYMS must not contain duplicate entries."
1827   (let (sorted-patchsyms
1828         (series (with-output-to-string
1829                   (with-current-buffer standard-output
1830                     (stgit-run-silent "series" "--noprefix"))))
1831         start)
1832     (while (string-match "^\\(.+\\)" series start)
1833       (let ((patchsym (intern (match-string 1 series))))
1834         (when (memq patchsym patchsyms)
1835           (setq sorted-patchsyms (cons patchsym sorted-patchsyms))))
1836       (setq start (match-end 0)))
1837     (setq sorted-patchsyms (nreverse sorted-patchsyms))
1838
1839     (unless (= (length patchsyms) (length sorted-patchsyms))
1840       (error "Internal error"))
1841
1842     sorted-patchsyms))
1843
1844 (defun stgit-move-patches (patchsyms target-patch)
1845   "Move the patches in PATCHSYMS to below TARGET-PATCH.
1846 If TARGET-PATCH is :bottom or :top, move the patches to the
1847 bottom or top of the stack, respectively.
1848
1849 Interactively, move the marked patches to where the point is."
1850   (interactive (list stgit-marked-patches
1851                      (stgit-move-patches-target)))
1852   (stgit-assert-mode)
1853   (unless patchsyms
1854     (error "Need at least one patch to move"))
1855
1856   (unless target-patch
1857     (error "Point not at a patch"))
1858
1859   ;; need to have patchsyms sorted by position in the stack
1860   (let ((sorted-patchsyms (stgit-sort-patches patchsyms)))
1861     (stgit-capture-output nil
1862       (if (eq target-patch :top)
1863           (apply 'stgit-run "float" sorted-patchsyms)
1864         (apply 'stgit-run
1865                "sink"
1866                (append (unless (eq target-patch :bottom)
1867                          (list "--to" target-patch))
1868                        '("--")
1869                        sorted-patchsyms)))))
1870   (stgit-reload))
1871
1872 (defun stgit-squash (patchsyms)
1873   "Squash the patches in PATCHSYMS.
1874 Interactively, squash the marked patches.
1875
1876 Unless there are any conflicts, the patches will be merged into
1877 one patch, which will occupy the same spot in the series as the
1878 deepest patch had before the squash."
1879   (interactive (list stgit-marked-patches))
1880   (stgit-assert-mode)
1881   (when (< (length patchsyms) 2)
1882     (error "Need at least two patches to squash"))
1883   (let ((stgit-buffer (current-buffer))
1884         (edit-buf (get-buffer-create "*StGit edit*"))
1885         (dir default-directory)
1886         (sorted-patchsyms (stgit-sort-patches patchsyms)))
1887     (log-edit 'stgit-confirm-squash t nil edit-buf)
1888     (set (make-local-variable 'stgit-patchsyms) sorted-patchsyms)
1889     (setq default-directory dir)
1890     (let ((result (let ((standard-output edit-buf))
1891                     (apply 'stgit-run-silent "squash"
1892                            "--save-template=-" sorted-patchsyms))))
1893
1894       ;; stg squash may have reordered the patches or caused conflicts
1895       (with-current-buffer stgit-buffer
1896         (stgit-reload))
1897
1898       (unless (eq 0 result)
1899         (fundamental-mode)
1900         (rename-buffer "*StGit error*")
1901         (resize-temp-buffer-window)
1902         (switch-to-buffer-other-window stgit-buffer)
1903         (error "stg squash failed")))))
1904
1905 (defun stgit-confirm-squash ()
1906   (interactive)
1907   (let ((file (make-temp-file "stgit-edit-")))
1908     (write-region (point-min) (point-max) file)
1909     (stgit-capture-output nil
1910       (apply 'stgit-run "squash" "-f" file stgit-patchsyms))
1911     (with-current-buffer log-edit-parent-buffer
1912       (stgit-clear-marks)
1913       ;; Go to first marked patch and stay there
1914       (goto-char (point-min))
1915       (re-search-forward (concat "^[>+-]\\*") nil t)
1916       (move-to-column goal-column)
1917       (let ((pos (point)))
1918         (stgit-reload)
1919         (goto-char pos)))))
1920
1921 (defun stgit-help ()
1922   "Display help for the StGit mode."
1923   (interactive)
1924   (describe-function 'stgit-mode))
1925
1926 (defun stgit-undo (&optional arg)
1927   "Run stg undo.
1928 With prefix argument, run it with the --hard flag.
1929
1930 See also `stgit-redo'."
1931   (interactive "P")
1932   (stgit-assert-mode)
1933   (stgit-capture-output nil
1934     (if arg
1935         (stgit-run "undo" "--hard")
1936       (stgit-run "undo")))
1937   (stgit-reload))
1938
1939 (defun stgit-redo (&optional arg)
1940   "Run stg redo.
1941 With prefix argument, run it with the --hard flag.
1942
1943 See also `stgit-undo'."
1944   (interactive "P")
1945   (stgit-assert-mode)
1946   (stgit-capture-output nil
1947     (if arg
1948         (stgit-run "redo" "--hard")
1949       (stgit-run "redo")))
1950   (stgit-reload))
1951
1952 (defun stgit-refresh (&optional arg)
1953   "Run stg refresh.
1954 If the index contains any changes, only refresh from index.
1955
1956 With prefix argument, refresh the marked patch or the patch under point."
1957   (interactive "P")
1958   (stgit-assert-mode)
1959   (let ((patchargs (if arg
1960                        (let ((patches (stgit-patches-marked-or-at-point nil t)))
1961                          (when (> (length patches) 1)
1962                            (error "Too many patches marked"))
1963                          (cons "-p" patches))
1964                      nil)))
1965     (unless (stgit-index-empty-p)
1966       (setq patchargs (cons "--index" patchargs)))
1967     (stgit-capture-output nil
1968       (apply 'stgit-run "refresh" patchargs))
1969     (stgit-refresh-git-status))
1970   (stgit-reload))
1971
1972 (defvar stgit-show-worktree nil
1973   "If nil, inhibit showing work tree and index in the stgit buffer.
1974
1975 See also `stgit-show-worktree-mode'.")
1976
1977 (defvar stgit-show-ignored nil
1978   "If nil, inhibit showing files ignored by git.")
1979
1980 (defvar stgit-show-unknown nil
1981   "If nil, inhibit showing files not registered with git.")
1982
1983 (defun stgit-toggle-worktree (&optional arg)
1984   "Toggle the visibility of the work tree.
1985 With ARG, show the work tree if ARG is positive.
1986
1987 Its initial setting is controlled by `stgit-default-show-worktree'.
1988
1989 `stgit-show-worktree-mode' controls where on screen the index and
1990 work tree will show up."
1991   (interactive)
1992   (stgit-assert-mode)
1993   (setq stgit-show-worktree
1994         (if (numberp arg)
1995             (> arg 0)
1996           (not stgit-show-worktree)))
1997   (stgit-reload))
1998
1999 (defun stgit-toggle-ignored (&optional arg)
2000   "Toggle the visibility of files ignored by git in the work
2001 tree. With ARG, show these files if ARG is positive.
2002
2003 Use \\[stgit-toggle-worktree] to show the work tree."
2004   (interactive)
2005   (stgit-assert-mode)
2006   (setq stgit-show-ignored
2007         (if (numberp arg)
2008             (> arg 0)
2009           (not stgit-show-ignored)))
2010   (stgit-reload))
2011
2012 (defun stgit-toggle-unknown (&optional arg)
2013   "Toggle the visibility of files not registered with git in the
2014 work tree. With ARG, show these files if ARG is positive.
2015
2016 Use \\[stgit-toggle-worktree] to show the work tree."
2017   (interactive)
2018   (stgit-assert-mode)
2019   (setq stgit-show-unknown
2020         (if (numberp arg)
2021             (> arg 0)
2022           (not stgit-show-unknown)))
2023   (stgit-reload))
2024
2025 (provide 'stgit)