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-;;; magit-bisect.el --- bisect support for Magit -*- lexical-binding: t -*-
-
-;; Copyright (C) 2011-2020 The Magit Project Contributors
-;;
-;; You should have received a copy of the AUTHORS.md file which
-;; lists all contributors. If not, see http://magit.vc/authors.
-
-;; Author: Jonas Bernoulli <jonas@bernoul.li>
-;; Maintainer: Jonas Bernoulli <jonas@bernoul.li>
-
-;; Magit is free software; you can redistribute it and/or modify it
-;; under the terms of the GNU General Public License as published by
-;; the Free Software Foundation; either version 3, or (at your option)
-;; any later version.
-;;
-;; Magit is distributed in the hope that it will be useful, but WITHOUT
-;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
-;; or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
-;; License for more details.
-;;
-;; You should have received a copy of the GNU General Public License
-;; along with Magit. If not, see http://www.gnu.org/licenses.
-
-;;; Commentary:
-
-;; Use a binary search to find the commit that introduced a bug.
-
-;;; Code:
-
-(require 'magit)
-
-;;; Options
-
-(defcustom magit-bisect-show-graph t
- "Whether to use `--graph' in the log showing commits yet to be bisected."
- :package-version '(magit . "2.8.0")
- :group 'magit-status
- :type 'boolean)
-
-(defface magit-bisect-good
- '((t :foreground "DarkOliveGreen"))
- "Face for good bisect revisions."
- :group 'magit-faces)
-
-(defface magit-bisect-skip
- '((t :foreground "DarkGoldenrod"))
- "Face for skipped bisect revisions."
- :group 'magit-faces)
-
-(defface magit-bisect-bad
- '((t :foreground "IndianRed4"))
- "Face for bad bisect revisions."
- :group 'magit-faces)
-
-;;; Commands
-
-;;;###autoload (autoload 'magit-bisect "magit-bisect" nil t)
-(transient-define-prefix magit-bisect ()
- "Narrow in on the commit that introduced a bug."
- :man-page "git-bisect"
- ["Actions"
- :if-not magit-bisect-in-progress-p
- ("B" "Start" magit-bisect-start)
- ("s" "Start script" magit-bisect-run)]
- ["Actions"
- :if magit-bisect-in-progress-p
- ("B" "Bad" magit-bisect-bad)
- ("g" "Good" magit-bisect-good)
- ("k" "Skip" magit-bisect-skip)
- ("r" "Reset" magit-bisect-reset)
- ("s" "Run script" magit-bisect-run)])
-
-;;;###autoload
-(defun magit-bisect-start (bad good)
- "Start a bisect session.
-
-Bisecting a bug means to find the commit that introduced it.
-This command starts such a bisect session by asking for a know
-good and a bad commit. To move the session forward use the
-other actions from the bisect transient command (\
-\\<magit-status-mode-map>\\[magit-bisect])."
- (interactive (if (magit-bisect-in-progress-p)
- (user-error "Already bisecting")
- (magit-bisect-start-read-args)))
- (unless (magit-rev-ancestor-p good bad)
- (user-error
- "The good revision (%s) has to be an ancestor of the bad one (%s)"
- good bad))
- (when (magit-anything-modified-p)
- (user-error "Cannot bisect with uncommitted changes"))
- (magit-git-bisect "start" (list bad good) t))
-
-(defun magit-bisect-start-read-args ()
- (let ((b (magit-read-branch-or-commit "Start bisect with bad revision")))
- (list b (magit-read-other-branch-or-commit "Good revision" b))))
-
-;;;###autoload
-(defun magit-bisect-reset ()
- "After bisecting, cleanup bisection state and return to original `HEAD'."
- (interactive)
- (magit-confirm 'reset-bisect)
- (magit-run-git "bisect" "reset")
- (ignore-errors (delete-file (magit-git-dir "BISECT_CMD_OUTPUT"))))
-
-;;;###autoload
-(defun magit-bisect-good ()
- "While bisecting, mark the current commit as good.
-Use this after you have asserted that the commit does not contain
-the bug in question."
- (interactive)
- (magit-git-bisect "good"))
-
-;;;###autoload
-(defun magit-bisect-bad ()
- "While bisecting, mark the current commit as bad.
-Use this after you have asserted that the commit does contain the
-bug in question."
- (interactive)
- (magit-git-bisect "bad"))
-
-;;;###autoload
-(defun magit-bisect-skip ()
- "While bisecting, skip the current commit.
-Use this if for some reason the current commit is not a good one
-to test. This command lets Git choose a different one."
- (interactive)
- (magit-git-bisect "skip"))
-
-;;;###autoload
-(defun magit-bisect-run (cmdline &optional bad good)
- "Bisect automatically by running commands after each step.
-
-Unlike `git bisect run' this can be used before bisecting has
-begun. In that case it behaves like `git bisect start; git
-bisect run'."
- (interactive (let ((args (and (not (magit-bisect-in-progress-p))
- (magit-bisect-start-read-args))))
- (cons (read-shell-command "Bisect shell command: ") args)))
- (when (and bad good)
- (magit-bisect-start bad good))
- (magit-git-bisect "run" (list shell-file-name shell-command-switch cmdline)))
-
-(defun magit-git-bisect (subcommand &optional args no-assert)
- (unless (or no-assert (magit-bisect-in-progress-p))
- (user-error "Not bisecting"))
- (message "Bisecting...")
- (magit-with-toplevel
- (magit-run-git-async "bisect" subcommand args))
- (set-process-sentinel
- magit-this-process
- (lambda (process event)
- (when (memq (process-status process) '(exit signal))
- (if (> (process-exit-status process) 0)
- (magit-process-sentinel process event)
- (process-put process 'inhibit-refresh t)
- (magit-process-sentinel process event)
- (when (buffer-live-p (process-buffer process))
- (with-current-buffer (process-buffer process)
- (when-let ((section (get-text-property (point) 'magit-section))
- (output (buffer-substring-no-properties
- (oref section content)
- (oref section end))))
- (with-temp-file (magit-git-dir "BISECT_CMD_OUTPUT")
- (insert output)))))
- (magit-refresh))
- (message "Bisecting...done")))))
-
-;;; Sections
-
-(defun magit-bisect-in-progress-p ()
- (file-exists-p (magit-git-dir "BISECT_LOG")))
-
-(defun magit-insert-bisect-output ()
- "While bisecting, insert section with output from `git bisect'."
- (when (magit-bisect-in-progress-p)
- (let* ((lines
- (or (magit-file-lines (magit-git-dir "BISECT_CMD_OUTPUT"))
- (list "Bisecting: (no saved bisect output)"
- "It appears you have invoked `git bisect' from a shell."
- "There is nothing wrong with that, we just cannot display"
- "anything useful here. Consult the shell output instead.")))
- (done-re "^\\([a-z0-9]\\{40\\}\\) is the first bad commit$")
- (bad-line (or (and (string-match done-re (car lines))
- (pop lines))
- (--first (string-match done-re it) lines))))
- (magit-insert-section ((eval (if bad-line 'commit 'bisect-output))
- (and bad-line (match-string 1 bad-line)))
- (magit-insert-heading
- (propertize (or bad-line (pop lines))
- 'font-lock-face 'magit-section-heading))
- (dolist (line lines)
- (insert line "\n"))))
- (insert "\n")))
-
-(defun magit-insert-bisect-rest ()
- "While bisecting, insert section visualizing the bisect state."
- (when (magit-bisect-in-progress-p)
- (magit-insert-section (bisect-view)
- (magit-insert-heading "Bisect Rest:")
- (magit-git-wash (apply-partially 'magit-log-wash-log 'bisect-vis)
- "bisect" "visualize" "git" "log"
- "--format=%h%x00%D%x00%s" "--decorate=full"
- (and magit-bisect-show-graph "--graph")))))
-
-(defun magit-insert-bisect-log ()
- "While bisecting, insert section logging bisect progress."
- (when (magit-bisect-in-progress-p)
- (magit-insert-section (bisect-log)
- (magit-insert-heading "Bisect Log:")
- (magit-git-wash #'magit-wash-bisect-log "bisect" "log")
- (insert ?\n))))
-
-(defun magit-wash-bisect-log (_args)
- (let (beg)
- (while (progn (setq beg (point-marker))
- (re-search-forward "^\\(git bisect [^\n]+\n\\)" nil t))
- (magit-bind-match-strings (heading) nil
- (magit-delete-match)
- (save-restriction
- (narrow-to-region beg (point))
- (goto-char (point-min))
- (magit-insert-section (bisect-item heading t)
- (insert (propertize heading 'font-lock-face
- 'magit-section-secondary-heading))
- (magit-insert-heading)
- (magit-wash-sequence
- (apply-partially 'magit-log-wash-rev 'bisect-log
- (magit-abbrev-length)))
- (insert ?\n)))))
- (when (re-search-forward
- "# first bad commit: \\[\\([a-z0-9]\\{40\\}\\)\\] [^\n]+\n" nil t)
- (magit-bind-match-strings (hash) nil
- (magit-delete-match)
- (magit-insert-section (bisect-item)
- (insert hash " is the first bad commit\n"))))))
-
-;;; _
-(provide 'magit-bisect)
-;;; magit-bisect.el ends here
Copyright 2019--2024 Marius PETER