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diff --git a/elpa/magit-20220503.1245/magit-diff.el b/elpa/magit-20220503.1245/magit-diff.el new file mode 100644 index 0000000..9e78b52 --- /dev/null +++ b/elpa/magit-20220503.1245/magit-diff.el @@ -0,0 +1,3450 @@ +;;; magit-diff.el --- Inspect Git diffs -*- lexical-binding:t -*- + +;; Copyright (C) 2008-2022 The Magit Project Contributors + +;; Author: Jonas Bernoulli <jonas@bernoul.li> +;; Maintainer: Jonas Bernoulli <jonas@bernoul.li> + +;; SPDX-License-Identifier: GPL-3.0-or-later + +;; 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 of the License, 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 <https://www.gnu.org/licenses/>. + +;;; Commentary: + +;; This library implements support for looking at Git diffs and +;; commits. + +;;; Code: + +(require 'magit-core) +(require 'git-commit) + +(eval-when-compile (require 'ansi-color)) +(require 'diff-mode) +(require 'image) +(require 'smerge-mode) + +;; For `magit-diff-popup' +(declare-function magit-stash-show "magit-stash" (stash &optional args files)) +;; For `magit-diff-visit-file' +(declare-function magit-find-file-noselect "magit-files" (rev file)) +(declare-function magit-status-setup-buffer "magit-status" (&optional directory)) +;; For `magit-diff-while-committing' +(declare-function magit-commit-message-buffer "magit-commit" ()) +;; For `magit-insert-revision-gravatar' +(defvar gravatar-size) +;; For `magit-show-commit' and `magit-diff-show-or-scroll' +(declare-function magit-current-blame-chunk "magit-blame" (&optional type noerror)) +(declare-function magit-blame-mode "magit-blame" (&optional arg)) +(defvar magit-blame-mode) +;; For `magit-diff-show-or-scroll' +(declare-function git-rebase-current-line "git-rebase" ()) +;; For `magit-diff-unmerged' +(declare-function magit-merge-in-progress-p "magit-merge" ()) +(declare-function magit--merge-range "magit-merge" (&optional head)) +;; For `magit-diff--dwim' +(declare-function forge--pullreq-range "forge-pullreq" + (pullreq &optional endpoints)) +(declare-function forge--pullreq-ref "forge-pullreq" (pullreq)) +;; For `magit-diff-wash-diff' +(declare-function ansi-color-apply-on-region "ansi-color") +;; For `magit-diff-wash-submodule' +(declare-function magit-log-wash-log "magit-log" (style args)) +;; For keymaps and menus +(declare-function magit-apply "magit-apply" (&rest args)) +(declare-function magit-stage "magit-apply" (&optional indent)) +(declare-function magit-unstage "magit-apply" ()) +(declare-function magit-discard "magit-apply" ()) +(declare-function magit-reverse "magit-apply" (&rest args)) +(declare-function magit-file-rename "magit-files" (file newname)) +(declare-function magit-file-untrack "magit-files" (files &optional force)) +(declare-function magit-commit-add-log "magit-commit" ()) +(declare-function magit-diff-trace-definition "magit-log" ()) +(declare-function magit-patch-save "magit-patch" (files &optional arg)) +(declare-function magit-do-async-shell-command "magit-extras" (file)) +(declare-function magit-add-change-log-entry "magit-extras" + (&optional whoami file-name other-window)) +(declare-function magit-add-change-log-entry-other-window "magit-extras" + (&optional whoami file-name)) +(declare-function magit-diff-edit-hunk-commit "magit-extras" (file)) +(declare-function magit-smerge-keep-current "magit-apply" ()) +(declare-function magit-smerge-keep-upper "magit-apply" ()) +(declare-function magit-smerge-keep-base "magit-apply" ()) +(declare-function magit-smerge-keep-lower "magit-apply" ()) + +(eval-when-compile + (cl-pushnew 'orig-rev eieio--known-slot-names) + (cl-pushnew 'action-type eieio--known-slot-names) + (cl-pushnew 'target eieio--known-slot-names)) + +;;; Options +;;;; Diff Mode + +(defgroup magit-diff nil + "Inspect and manipulate Git diffs." + :link '(info-link "(magit)Diffing") + :group 'magit-commands + :group 'magit-modes) + +(defcustom magit-diff-mode-hook nil + "Hook run after entering Magit-Diff mode." + :group 'magit-diff + :type 'hook) + +(defcustom magit-diff-sections-hook + '(magit-insert-diff + magit-insert-xref-buttons) + "Hook run to insert sections into a `magit-diff-mode' buffer." + :package-version '(magit . "2.3.0") + :group 'magit-diff + :type 'hook) + +(defcustom magit-diff-expansion-threshold 60 + "After how many seconds not to expand anymore diffs. + +Except in status buffers, diffs usually start out fully expanded. +Because that can take a long time, all diffs that haven't been +fontified during a refresh before the threshold defined here are +instead displayed with their bodies collapsed. + +Note that this can cause sections that were previously expanded +to be collapsed. So you should not pick a very low value here. + +The hook function `magit-diff-expansion-threshold' has to be a +member of `magit-section-set-visibility-hook' for this option +to have any effect." + :package-version '(magit . "2.9.0") + :group 'magit-diff + :type 'float) + +(defcustom magit-diff-highlight-hunk-body t + "Whether to highlight bodies of selected hunk sections. +This only has an effect if `magit-diff-highlight' is a +member of `magit-section-highlight-hook', which see." + :package-version '(magit . "2.1.0") + :group 'magit-diff + :type 'boolean) + +(defcustom magit-diff-highlight-hunk-region-functions + '(magit-diff-highlight-hunk-region-dim-outside + magit-diff-highlight-hunk-region-using-overlays) + "The functions used to highlight the hunk-internal region. + +`magit-diff-highlight-hunk-region-dim-outside' overlays the outside +of the hunk internal selection with a face that causes the added and +removed lines to have the same background color as context lines. +This function should not be removed from the value of this option. + +`magit-diff-highlight-hunk-region-using-overlays' and +`magit-diff-highlight-hunk-region-using-underline' emphasize the +region by placing delimiting horizontal lines before and after it. +The underline variant was implemented because Eli said that is +how we should do it. However the overlay variant actually works +better. Also see https://github.com/magit/magit/issues/2758. + +Instead of, or in addition to, using delimiting horizontal lines, +to emphasize the boundaries, you may wish to emphasize the text +itself, using `magit-diff-highlight-hunk-region-using-face'. + +In terminal frames it's not possible to draw lines as the overlay +and underline variants normally do, so there they fall back to +calling the face function instead." + :package-version '(magit . "2.9.0") + :set-after '(magit-diff-show-lines-boundaries) + :group 'magit-diff + :type 'hook + :options '(magit-diff-highlight-hunk-region-dim-outside + magit-diff-highlight-hunk-region-using-underline + magit-diff-highlight-hunk-region-using-overlays + magit-diff-highlight-hunk-region-using-face)) + +(defcustom magit-diff-unmarked-lines-keep-foreground t + "Whether `magit-diff-highlight-hunk-region-dim-outside' preserves foreground. +When this is set to nil, then that function only adjusts the +foreground color but added and removed lines outside the region +keep their distinct foreground colors." + :package-version '(magit . "2.9.0") + :group 'magit-diff + :type 'boolean) + +(defcustom magit-diff-refine-hunk nil + "Whether to show word-granularity differences within diff hunks. + +nil Never show fine differences. +t Show fine differences for the current diff hunk only. +`all' Show fine differences for all displayed diff hunks." + :group 'magit-diff + :safe (lambda (val) (memq val '(nil t all))) + :type '(choice (const :tag "Never" nil) + (const :tag "Current" t) + (const :tag "All" all))) + +(defcustom magit-diff-refine-ignore-whitespace smerge-refine-ignore-whitespace + "Whether to ignore whitespace changes in word-granularity differences." + :package-version '(magit . "3.0.0") + :set-after '(smerge-refine-ignore-whitespace) + :group 'magit-diff + :safe 'booleanp + :type 'boolean) + +(put 'magit-diff-refine-hunk 'permanent-local t) + +(defcustom magit-diff-adjust-tab-width nil + "Whether to adjust the width of tabs in diffs. + +Determining the correct width can be expensive if it requires +opening large and/or many files, so the widths are cached in +the variable `magit-diff--tab-width-cache'. Set that to nil +to invalidate the cache. + +nil Never adjust tab width. Use `tab-width's value from + the Magit buffer itself instead. + +t If the corresponding file-visiting buffer exits, then + use `tab-width's value from that buffer. Doing this is + cheap, so this value is used even if a corresponding + cache entry exists. + +`always' If there is no such buffer, then temporarily visit the + file to determine the value. + +NUMBER Like `always', but don't visit files larger than NUMBER + bytes." + :package-version '(magit . "2.12.0") + :group 'magit-diff + :type '(choice (const :tag "Never" nil) + (const :tag "If file-visiting buffer exists" t) + (integer :tag "If file isn't larger than N bytes") + (const :tag "Always" always))) + +(defcustom magit-diff-paint-whitespace t + "Specify where to highlight whitespace errors. + +nil Never highlight whitespace errors. +t Highlight whitespace errors everywhere. +`uncommitted' Only highlight whitespace errors in diffs + showing uncommitted changes. + +For backward compatibility `status' is treated as a synonym +for `uncommitted'. + +The option `magit-diff-paint-whitespace-lines' controls for +what lines (added/remove/context) errors are highlighted. + +The options `magit-diff-highlight-trailing' and +`magit-diff-highlight-indentation' control what kind of +whitespace errors are highlighted." + :group 'magit-diff + :safe (lambda (val) (memq val '(t nil uncommitted status))) + :type '(choice (const :tag "In all diffs" t) + (const :tag "Only in uncommitted changes" uncommitted) + (const :tag "Never" nil))) + +(defcustom magit-diff-paint-whitespace-lines t + "Specify in what kind of lines to highlight whitespace errors. + +t Highlight only in added lines. +`both' Highlight in added and removed lines. +`all' Highlight in added, removed and context lines." + :package-version '(magit . "3.0.0") + :group 'magit-diff + :safe (lambda (val) (memq val '(t both all))) + :type '(choice (const :tag "in added lines" t) + (const :tag "in added and removed lines" both) + (const :tag "in added, removed and context lines" all))) + +(defcustom magit-diff-highlight-trailing t + "Whether to highlight whitespace at the end of a line in diffs. +Used only when `magit-diff-paint-whitespace' is non-nil." + :group 'magit-diff + :safe 'booleanp + :type 'boolean) + +(defcustom magit-diff-highlight-indentation nil + "Highlight the \"wrong\" indentation style. +Used only when `magit-diff-paint-whitespace' is non-nil. + +The value is an alist of the form ((REGEXP . INDENT)...). The +path to the current repository is matched against each element +in reverse order. Therefore if a REGEXP matches, then earlier +elements are not tried. + +If the used INDENT is `tabs', highlight indentation with tabs. +If INDENT is an integer, highlight indentation with at least +that many spaces. Otherwise, highlight neither." + :group 'magit-diff + :type `(repeat (cons (string :tag "Directory regexp") + (choice (const :tag "Tabs" tabs) + (integer :tag "Spaces" :value ,tab-width) + (const :tag "Neither" nil))))) + +(defcustom magit-diff-hide-trailing-cr-characters + (and (memq system-type '(ms-dos windows-nt)) t) + "Whether to hide ^M characters at the end of a line in diffs." + :package-version '(magit . "2.6.0") + :group 'magit-diff + :type 'boolean) + +(defcustom magit-diff-highlight-keywords t + "Whether to highlight bracketed keywords in commit messages." + :package-version '(magit . "2.12.0") + :group 'magit-diff + :type 'boolean) + +(defcustom magit-diff-extra-stat-arguments nil + "Additional arguments to be used alongside `--stat'. + +A list of zero or more arguments or a function that takes no +argument and returns such a list. These arguments are allowed +here: `--stat-width', `--stat-name-width', `--stat-graph-width' +and `--compact-summary'. See the git-diff(1) manpage." + :package-version '(magit . "3.0.0") + :group 'magit-diff + :type '(radio (function-item magit-diff-use-window-width-as-stat-width) + function + (list string) + (const :tag "None" nil))) + +;;;; File Diff + +(defcustom magit-diff-buffer-file-locked t + "Whether `magit-diff-buffer-file' uses a dedicated buffer." + :package-version '(magit . "2.7.0") + :group 'magit-commands + :group 'magit-diff + :type 'boolean) + +;;;; Revision Mode + +(defgroup magit-revision nil + "Inspect and manipulate Git commits." + :link '(info-link "(magit)Revision Buffer") + :group 'magit-modes) + +(defcustom magit-revision-mode-hook + '(bug-reference-mode + goto-address-mode) + "Hook run after entering Magit-Revision mode." + :group 'magit-revision + :type 'hook + :options '(bug-reference-mode + goto-address-mode)) + +(defcustom magit-revision-sections-hook + '(magit-insert-revision-tag + magit-insert-revision-headers + magit-insert-revision-message + magit-insert-revision-notes + magit-insert-revision-diff + magit-insert-xref-buttons) + "Hook run to insert sections into a `magit-revision-mode' buffer." + :package-version '(magit . "2.3.0") + :group 'magit-revision + :type 'hook) + +(defcustom magit-revision-headers-format "\ +Author: %aN <%aE> +AuthorDate: %ad +Commit: %cN <%cE> +CommitDate: %cd +" + "Format string used to insert headers in revision buffers. + +All headers in revision buffers are inserted by the section +inserter `magit-insert-revision-headers'. Some of the headers +are created by calling `git show --format=FORMAT' where FORMAT +is the format specified here. Other headers are hard coded or +subject to option `magit-revision-insert-related-refs'." + :package-version '(magit . "2.3.0") + :group 'magit-revision + :type 'string) + +(defcustom magit-revision-insert-related-refs t + "Whether to show related branches in revision buffers + +`nil' Don't show any related branches. +`t' Show related local branches. +`all' Show related local and remote branches. +`mixed' Show all containing branches and local merged branches." + :package-version '(magit . "2.1.0") + :group 'magit-revision + :type '(choice (const :tag "don't" nil) + (const :tag "local only" t) + (const :tag "all related" all) + (const :tag "all containing, local merged" mixed))) + +(defcustom magit-revision-use-hash-sections 'quicker + "Whether to turn hashes inside the commit message into sections. + +If non-nil, then hashes inside the commit message are turned into +`commit' sections. There is a trade off to be made between +performance and reliability: + +- `slow' calls git for every word to be absolutely sure. +- `quick' skips words less than seven characters long. +- `quicker' additionally skips words that don't contain a number. +- `quickest' uses all words that are at least seven characters + long and which contain at least one number as well as at least + one letter. + +If nil, then no hashes are turned into sections, but you can +still visit the commit at point using \"RET\"." + :package-version '(magit . "2.12.0") + :group 'magit-revision + :type '(choice (const :tag "Use sections, quickest" quickest) + (const :tag "Use sections, quicker" quicker) + (const :tag "Use sections, quick" quick) + (const :tag "Use sections, slow" slow) + (const :tag "Don't use sections" nil))) + +(defcustom magit-revision-show-gravatars nil + "Whether to show gravatar images in revision buffers. + +If nil, then don't insert any gravatar images. If t, then insert +both images. If `author' or `committer', then insert only the +respective image. + +If you have customized the option `magit-revision-header-format' +and want to insert the images then you might also have to specify +where to do so. In that case the value has to be a cons-cell of +two regular expressions. The car specifies where to insert the +author's image. The top half of the image is inserted right +after the matched text, the bottom half on the next line in the +same column. The cdr specifies where to insert the committer's +image, accordingly. Either the car or the cdr may be nil." + :package-version '(magit . "2.3.0") + :group 'magit-revision + :type '(choice (const :tag "Don't show gravatars" nil) + (const :tag "Show gravatars" t) + (const :tag "Show author gravatar" author) + (const :tag "Show committer gravatar" committer) + (cons :tag "Show gravatars using custom pattern." + (regexp :tag "Author regexp" "^Author: ") + (regexp :tag "Committer regexp" "^Commit: ")))) + +(defcustom magit-revision-use-gravatar-kludge nil + "Whether to work around a bug which affects display of gravatars. + +Gravatar images are spliced into two halves which are then +displayed on separate lines. On OS X the splicing has a bug in +some Emacs builds, which causes the top and bottom halves to be +interchanged. Enabling this option works around this issue by +interchanging the halves once more, which cancels out the effect +of the bug. + +See https://github.com/magit/magit/issues/2265 +and https://debbugs.gnu.org/cgi/bugreport.cgi?bug=7847. + +Starting with Emacs 26.1 this kludge should not be required for +any build." + :package-version '(magit . "2.3.0") + :group 'magit-revision + :type 'boolean) + +(defcustom magit-revision-fill-summary-line nil + "Whether to fill excessively long summary lines. + +If this is an integer, then the summary line is filled if it is +longer than either the limit specified here or `window-width'. + +You may want to only set this locally in \".dir-locals-2.el\" for +repositories known to contain bad commit messages. + +The body of the message is left alone because (a) most people who +write excessively long summary lines usually don't add a body and +(b) even people who have the decency to wrap their lines may have +a good reason to include a long line in the body sometimes." + :package-version '(magit . "2.90.0") + :group 'magit-revision + :type '(choice (const :tag "Don't fill" nil) + (integer :tag "Fill if longer than"))) + +(defcustom magit-revision-filter-files-on-follow nil + "Whether to honor file filter if log arguments include --follow. + +When a commit is displayed from a log buffer, the resulting +revision buffer usually shares the log's file arguments, +restricting the diff to those files. However, there's a +complication when the log arguments include --follow: if the log +follows a file across a rename event, keeping the file +restriction would mean showing an empty diff in revision buffers +for commits before the rename event. + +When this option is nil, the revision buffer ignores the log's +filter if the log arguments include --follow. If non-nil, the +log's file filter is always honored." + :package-version '(magit . "3.0.0") + :group 'magit-revision + :type 'boolean) + +;;;; Visit Commands + +(defcustom magit-diff-visit-previous-blob t + "Whether `magit-diff-visit-file' may visit the previous blob. + +When this is t and point is on a removed line in a diff for a +committed change, then `magit-diff-visit-file' visits the blob +from the last revision which still had that line. + +Currently this is only supported for committed changes, for +staged and unstaged changes `magit-diff-visit-file' always +visits the file in the working tree." + :package-version '(magit . "2.9.0") + :group 'magit-diff + :type 'boolean) + +(defcustom magit-diff-visit-avoid-head-blob nil + "Whether `magit-diff-visit-file' avoids visiting a blob from `HEAD'. + +By default `magit-diff-visit-file' always visits the blob that +added the current line, while `magit-diff-visit-worktree-file' +visits the respective file in the working tree. For the `HEAD' +commit, the former command used to visit the worktree file too, +but that made it impossible to visit a blob from `HEAD'. + +When point is on a removed line and that change has not been +committed yet, then `magit-diff-visit-file' now visits the last +blob that still had that line, which is a blob from `HEAD'. +Previously this function used to visit the worktree file not +only for added lines but also for such removed lines. + +If you prefer the old behaviors, then set this to t." + :package-version '(magit . "3.0.0") + :group 'magit-diff + :type 'boolean) + +;;; Faces + +(defface magit-diff-file-heading + `((t ,@(and (>= emacs-major-version 27) '(:extend t)) + :weight bold)) + "Face for diff file headings." + :group 'magit-faces) + +(defface magit-diff-file-heading-highlight + `((t ,@(and (>= emacs-major-version 27) '(:extend t)) + :inherit magit-section-highlight)) + "Face for current diff file headings." + :group 'magit-faces) + +(defface magit-diff-file-heading-selection + `((((class color) (background light)) + ,@(and (>= emacs-major-version 27) '(:extend t)) + :inherit magit-diff-file-heading-highlight + :foreground "salmon4") + (((class color) (background dark)) + ,@(and (>= emacs-major-version 27) '(:extend t)) + :inherit magit-diff-file-heading-highlight + :foreground "LightSalmon3")) + "Face for selected diff file headings." + :group 'magit-faces) + +(defface magit-diff-hunk-heading + `((((class color) (background light)) + ,@(and (>= emacs-major-version 27) '(:extend t)) + :background "grey90" + :foreground "grey20") + (((class color) (background dark)) + ,@(and (>= emacs-major-version 27) '(:extend t)) + :background "grey25" + :foreground "grey95")) + "Face for diff hunk headings." + :group 'magit-faces) + +(defface magit-diff-hunk-heading-highlight + `((((class color) (background light)) + ,@(and (>= emacs-major-version 27) '(:extend t)) + :background "grey80" + :foreground "grey20") + (((class color) (background dark)) + ,@(and (>= emacs-major-version 27) '(:extend t)) + :background "grey35" + :foreground "grey95")) + "Face for current diff hunk headings." + :group 'magit-faces) + +(defface magit-diff-hunk-heading-selection + `((((class color) (background light)) + ,@(and (>= emacs-major-version 27) '(:extend t)) + :inherit magit-diff-hunk-heading-highlight + :foreground "salmon4") + (((class color) (background dark)) + ,@(and (>= emacs-major-version 27) '(:extend t)) + :inherit magit-diff-hunk-heading-highlight + :foreground "LightSalmon3")) + "Face for selected diff hunk headings." + :group 'magit-faces) + +(defface magit-diff-hunk-region + `((t :inherit bold + ,@(and (>= emacs-major-version 27) + (list :extend (ignore-errors (face-attribute 'region :extend)))))) + "Face used by `magit-diff-highlight-hunk-region-using-face'. + +This face is overlaid over text that uses other hunk faces, +and those normally set the foreground and background colors. +The `:foreground' and especially the `:background' properties +should be avoided here. Setting the latter would cause the +loss of information. Good properties to set here are `:weight' +and `:slant'." + :group 'magit-faces) + +(defface magit-diff-revision-summary + '((t :inherit magit-diff-hunk-heading)) + "Face for commit message summaries." + :group 'magit-faces) + +(defface magit-diff-revision-summary-highlight + '((t :inherit magit-diff-hunk-heading-highlight)) + "Face for highlighted commit message summaries." + :group 'magit-faces) + +(defface magit-diff-lines-heading + `((((class color) (background light)) + ,@(and (>= emacs-major-version 27) '(:extend t)) + :inherit magit-diff-hunk-heading-highlight + :background "LightSalmon3") + (((class color) (background dark)) + ,@(and (>= emacs-major-version 27) '(:extend t)) + :inherit magit-diff-hunk-heading-highlight + :foreground "grey80" + :background "salmon4")) + "Face for diff hunk heading when lines are marked." + :group 'magit-faces) + +(defface magit-diff-lines-boundary + `((t ,@(and (>= emacs-major-version 27) '(:extend t)) ; !important + :inherit magit-diff-lines-heading)) + "Face for boundary of marked lines in diff hunk." + :group 'magit-faces) + +(defface magit-diff-conflict-heading + '((t :inherit magit-diff-hunk-heading)) + "Face for conflict markers." + :group 'magit-faces) + +(defface magit-diff-added + `((((class color) (background light)) + ,@(and (>= emacs-major-version 27) '(:extend t)) + :background "#ddffdd" + :foreground "#22aa22") + (((class color) (background dark)) + ,@(and (>= emacs-major-version 27) '(:extend t)) + :background "#335533" + :foreground "#ddffdd")) + "Face for lines in a diff that have been added." + :group 'magit-faces) + +(defface magit-diff-removed + `((((class color) (background light)) + ,@(and (>= emacs-major-version 27) '(:extend t)) + :background "#ffdddd" + :foreground "#aa2222") + (((class color) (background dark)) + ,@(and (>= emacs-major-version 27) '(:extend t)) + :background "#553333" + :foreground "#ffdddd")) + "Face for lines in a diff that have been removed." + :group 'magit-faces) + +(defface magit-diff-our + '((t :inherit magit-diff-removed)) + "Face for lines in a diff for our side in a conflict." + :group 'magit-faces) + +(defface magit-diff-base + `((((class color) (background light)) + ,@(and (>= emacs-major-version 27) '(:extend t)) + :background "#ffffcc" + :foreground "#aaaa11") + (((class color) (background dark)) + ,@(and (>= emacs-major-version 27) '(:extend t)) + :background "#555522" + :foreground "#ffffcc")) + "Face for lines in a diff for the base side in a conflict." + :group 'magit-faces) + +(defface magit-diff-their + '((t :inherit magit-diff-added)) + "Face for lines in a diff for their side in a conflict." + :group 'magit-faces) + +(defface magit-diff-context + `((((class color) (background light)) + ,@(and (>= emacs-major-version 27) '(:extend t)) + :foreground "grey50") + (((class color) (background dark)) + ,@(and (>= emacs-major-version 27) '(:extend t)) + :foreground "grey70")) + "Face for lines in a diff that are unchanged." + :group 'magit-faces) + +(defface magit-diff-added-highlight + `((((class color) (background light)) + ,@(and (>= emacs-major-version 27) '(:extend t)) + :background "#cceecc" + :foreground "#22aa22") + (((class color) (background dark)) + ,@(and (>= emacs-major-version 27) '(:extend t)) + :background "#336633" + :foreground "#cceecc")) + "Face for lines in a diff that have been added." + :group 'magit-faces) + +(defface magit-diff-removed-highlight + `((((class color) (background light)) + ,@(and (>= emacs-major-version 27) '(:extend t)) + :background "#eecccc" + :foreground "#aa2222") + (((class color) (background dark)) + ,@(and (>= emacs-major-version 27) '(:extend t)) + :background "#663333" + :foreground "#eecccc")) + "Face for lines in a diff that have been removed." + :group 'magit-faces) + +(defface magit-diff-our-highlight + '((t :inherit magit-diff-removed-highlight)) + "Face for lines in a diff for our side in a conflict." + :group 'magit-faces) + +(defface magit-diff-base-highlight + `((((class color) (background light)) + ,@(and (>= emacs-major-version 27) '(:extend t)) + :background "#eeeebb" + :foreground "#aaaa11") + (((class color) (background dark)) + ,@(and (>= emacs-major-version 27) '(:extend t)) + :background "#666622" + :foreground "#eeeebb")) + "Face for lines in a diff for the base side in a conflict." + :group 'magit-faces) + +(defface magit-diff-their-highlight + '((t :inherit magit-diff-added-highlight)) + "Face for lines in a diff for their side in a conflict." + :group 'magit-faces) + +(defface magit-diff-context-highlight + `((((class color) (background light)) + ,@(and (>= emacs-major-version 27) '(:extend t)) + :background "grey95" + :foreground "grey50") + (((class color) (background dark)) + ,@(and (>= emacs-major-version 27) '(:extend t)) + :background "grey20" + :foreground "grey70")) + "Face for lines in the current context in a diff." + :group 'magit-faces) + +(defface magit-diff-whitespace-warning + '((t :inherit trailing-whitespace)) + "Face for highlighting whitespace errors added lines." + :group 'magit-faces) + +(defface magit-diffstat-added + '((((class color) (background light)) :foreground "#22aa22") + (((class color) (background dark)) :foreground "#448844")) + "Face for plus sign in diffstat." + :group 'magit-faces) + +(defface magit-diffstat-removed + '((((class color) (background light)) :foreground "#aa2222") + (((class color) (background dark)) :foreground "#aa4444")) + "Face for minus sign in diffstat." + :group 'magit-faces) + +;;; Arguments +;;;; Prefix Classes + +(defclass magit-diff-prefix (transient-prefix) + ((history-key :initform 'magit-diff) + (major-mode :initform 'magit-diff-mode))) + +(defclass magit-diff-refresh-prefix (magit-diff-prefix) + ((history-key :initform 'magit-diff) + (major-mode :initform nil))) + +;;;; Prefix Methods + +(cl-defmethod transient-init-value ((obj magit-diff-prefix)) + (pcase-let ((`(,args ,files) + (magit-diff--get-value 'magit-diff-mode + magit-prefix-use-buffer-arguments))) + (unless (eq transient-current-command 'magit-dispatch) + (when-let ((file (magit-file-relative-name))) + (setq files (list file)))) + (oset obj value (if files `(("--" ,@files) ,args) args)))) + +(cl-defmethod transient-init-value ((obj magit-diff-refresh-prefix)) + (oset obj value (if magit-buffer-diff-files + `(("--" ,@magit-buffer-diff-files) + ,magit-buffer-diff-args) + magit-buffer-diff-args))) + +(cl-defmethod transient-set-value ((obj magit-diff-prefix)) + (magit-diff--set-value obj)) + +(cl-defmethod transient-save-value ((obj magit-diff-prefix)) + (magit-diff--set-value obj 'save)) + +;;;; Argument Access + +(defun magit-diff-arguments (&optional mode) + "Return the current diff arguments." + (if (memq transient-current-command '(magit-diff magit-diff-refresh)) + (pcase-let ((`(,args ,alist) + (-separate #'atom (transient-get-value)))) + (list args (cdr (assoc "--" alist)))) + (magit-diff--get-value (or mode 'magit-diff-mode)))) + +(defun magit-diff--get-value (mode &optional use-buffer-args) + (unless use-buffer-args + (setq use-buffer-args magit-direct-use-buffer-arguments)) + (let (args files) + (cond + ((and (memq use-buffer-args '(always selected current)) + (eq major-mode mode)) + (setq args magit-buffer-diff-args) + (setq files magit-buffer-diff-files)) + ((and (memq use-buffer-args '(always selected)) + (when-let ((buffer (magit-get-mode-buffer + mode nil + (eq use-buffer-args 'selected)))) + (setq args (buffer-local-value 'magit-buffer-diff-args buffer)) + (setq files (buffer-local-value 'magit-buffer-diff-files buffer)) + t))) + ((plist-member (symbol-plist mode) 'magit-diff-current-arguments) + (setq args (get mode 'magit-diff-current-arguments))) + ((when-let ((elt (assq (intern (format "magit-diff:%s" mode)) + transient-values))) + (setq args (cdr elt)) + t)) + (t + (setq args (get mode 'magit-diff-default-arguments)))) + (list args files))) + +(defun magit-diff--set-value (obj &optional save) + (pcase-let* ((obj (oref obj prototype)) + (mode (or (oref obj major-mode) major-mode)) + (key (intern (format "magit-diff:%s" mode))) + (`(,args ,alist) + (-separate #'atom (transient-get-value))) + (files (cdr (assoc "--" alist)))) + (put mode 'magit-diff-current-arguments args) + (when save + (setf (alist-get key transient-values) args) + (transient-save-values)) + (transient--history-push obj) + (setq magit-buffer-diff-args args) + (setq magit-buffer-diff-files files) + (magit-refresh))) + +;;; Commands +;;;; Prefix Commands + +;;;###autoload (autoload 'magit-diff "magit-diff" nil t) +(transient-define-prefix magit-diff () + "Show changes between different versions." + :man-page "git-diff" + :class 'magit-diff-prefix + ["Limit arguments" + (magit:--) + (magit-diff:--ignore-submodules) + ("-b" "Ignore whitespace changes" ("-b" "--ignore-space-change")) + ("-w" "Ignore all whitespace" ("-w" "--ignore-all-space")) + (5 "-D" "Omit preimage for deletes" ("-D" "--irreversible-delete"))] + ["Context arguments" + (magit-diff:-U) + ("-W" "Show surrounding functions" ("-W" "--function-context"))] + ["Tune arguments" + (magit-diff:--diff-algorithm) + (magit-diff:-M) + (magit-diff:-C) + ("-x" "Disallow external diff drivers" "--no-ext-diff") + ("-s" "Show stats" "--stat") + ("=g" "Show signature" "--show-signature") + (5 "-R" "Reverse sides" "-R") + (5 magit-diff:--color-moved) + (5 magit-diff:--color-moved-ws)] + ["Actions" + [("d" "Dwim" magit-diff-dwim) + ("r" "Diff range" magit-diff-range) + ("p" "Diff paths" magit-diff-paths)] + [("u" "Diff unstaged" magit-diff-unstaged) + ("s" "Diff staged" magit-diff-staged) + ("w" "Diff worktree" magit-diff-working-tree)] + [("c" "Show commit" magit-show-commit) + ("t" "Show stash" magit-stash-show)]]) + +;;;###autoload (autoload 'magit-diff-refresh "magit-diff" nil t) +(transient-define-prefix magit-diff-refresh () + "Change the arguments used for the diff(s) in the current buffer." + :man-page "git-diff" + :class 'magit-diff-refresh-prefix + ["Limit arguments" + (magit:--) + (magit-diff:--ignore-submodules) + ("-b" "Ignore whitespace changes" ("-b" "--ignore-space-change")) + ("-w" "Ignore all whitespace" ("-w" "--ignore-all-space")) + (5 "-D" "Omit preimage for deletes" ("-D" "--irreversible-delete"))] + ["Context arguments" + (magit-diff:-U) + ("-W" "Show surrounding functions" ("-W" "--function-context"))] + ["Tune arguments" + (magit-diff:--diff-algorithm) + (magit-diff:-M) + (magit-diff:-C) + ("-x" "Disallow external diff drivers" "--no-ext-diff") + ("-s" "Show stats" "--stat" + :if-derived magit-diff-mode) + ("=g" "Show signature" "--show-signature" + :if-derived magit-diff-mode) + (5 "-R" "Reverse sides" "-R" + :if-derived magit-diff-mode) + (5 magit-diff:--color-moved) + (5 magit-diff:--color-moved-ws)] + [["Refresh" + ("g" "buffer" magit-diff-refresh) + ("s" "buffer and set defaults" transient-set :transient nil) + ("w" "buffer and save defaults" transient-save :transient nil)] + ["Toggle" + ("t" "hunk refinement" magit-diff-toggle-refine-hunk) + ("F" "file filter" magit-diff-toggle-file-filter) + ("b" "buffer lock" magit-toggle-buffer-lock + :if-mode (magit-diff-mode magit-revision-mode magit-stash-mode))] + [:if-mode magit-diff-mode + :description "Do" + ("r" "switch range type" magit-diff-switch-range-type) + ("f" "flip revisions" magit-diff-flip-revs)]] + (interactive) + (if (not (eq transient-current-command 'magit-diff-refresh)) + (transient-setup 'magit-diff-refresh) + (pcase-let ((`(,args ,files) (magit-diff-arguments))) + (setq magit-buffer-diff-args args) + (setq magit-buffer-diff-files files)) + (magit-refresh))) + +;;;; Infix Commands + +(transient-define-argument magit:-- () + :description "Limit to files" + :class 'transient-files + :key "--" + :argument "--" + :prompt "Limit to file,s: " + :reader #'magit-read-files + :multi-value t) + +(defun magit-read-files (prompt initial-input history &optional list-fn) + (magit-completing-read-multiple* prompt + (funcall (or list-fn #'magit-list-files)) + nil nil + (or initial-input (magit-file-at-point)) + history)) + +(transient-define-argument magit-diff:-U () + :description "Context lines" + :class 'transient-option + :argument "-U" + :reader #'transient-read-number-N0) + +(transient-define-argument magit-diff:-M () + :description "Detect renames" + :class 'transient-option + :argument "-M" + :allow-empty t + :reader #'transient-read-number-N+) + +(transient-define-argument magit-diff:-C () + :description "Detect copies" + :class 'transient-option + :argument "-C" + :allow-empty t + :reader #'transient-read-number-N+) + +(transient-define-argument magit-diff:--diff-algorithm () + :description "Diff algorithm" + :class 'transient-option + :key "-A" + :argument "--diff-algorithm=" + :reader #'magit-diff-select-algorithm) + +(defun magit-diff-select-algorithm (&rest _ignore) + (magit-read-char-case nil t + (?d "[d]efault" "default") + (?m "[m]inimal" "minimal") + (?p "[p]atience" "patience") + (?h "[h]istogram" "histogram"))) + +(transient-define-argument magit-diff:--ignore-submodules () + :description "Ignore submodules" + :class 'transient-option + :key "-i" + :argument "--ignore-submodules=" + :reader #'magit-diff-select-ignore-submodules) + +(defun magit-diff-select-ignore-submodules (&rest _ignored) + (magit-read-char-case "Ignore submodules " t + (?u "[u]ntracked" "untracked") + (?d "[d]irty" "dirty") + (?a "[a]ll" "all"))) + +(transient-define-argument magit-diff:--color-moved () + :description "Color moved lines" + :class 'transient-option + :key "-m" + :argument "--color-moved=" + :reader #'magit-diff-select-color-moved-mode) + +(defun magit-diff-select-color-moved-mode (&rest _ignore) + (magit-read-char-case "Color moved " t + (?d "[d]efault" "default") + (?p "[p]lain" "plain") + (?b "[b]locks" "blocks") + (?z "[z]ebra" "zebra") + (?Z "[Z] dimmed-zebra" "dimmed-zebra"))) + +(transient-define-argument magit-diff:--color-moved-ws () + :description "Whitespace treatment for --color-moved" + :class 'transient-option + :key "=w" + :argument "--color-moved-ws=" + :reader #'magit-diff-select-color-moved-ws-mode) + +(defun magit-diff-select-color-moved-ws-mode (&rest _ignore) + (magit-read-char-case "Ignore whitespace " t + (?i "[i]ndentation" "allow-indentation-change") + (?e "[e]nd of line" "ignore-space-at-eol") + (?s "[s]pace change" "ignore-space-change") + (?a "[a]ll space" "ignore-all-space") + (?n "[n]o" "no"))) + +;;;; Setup Commands + +;;;###autoload +(defun magit-diff-dwim (&optional args files) + "Show changes for the thing at point." + (interactive (magit-diff-arguments)) + (let ((default-directory default-directory) + (section (magit-current-section))) + (cond + ((magit-section-match 'module section) + (setq default-directory + (expand-file-name + (file-name-as-directory (oref section value)))) + (magit-diff-range (oref section range))) + (t + (when (magit-section-match 'module-commit section) + (setq args nil) + (setq files nil) + (setq default-directory + (expand-file-name + (file-name-as-directory (magit-section-parent-value section))))) + (pcase (magit-diff--dwim) + ('unmerged (magit-diff-unmerged args files)) + ('unstaged (magit-diff-unstaged args files)) + ('staged + (let ((file (magit-file-at-point))) + (if (and file (equal (cddr (car (magit-file-status file))) '(?D ?U))) + ;; File was deleted by us and modified by them. Show the latter. + (magit-diff-unmerged args (list file)) + (magit-diff-staged nil args files)))) + (`(stash . ,value) (magit-stash-show value args)) + (`(commit . ,value) + (magit-diff-range (format "%s^..%s" value value) args files)) + ((and range (pred stringp)) + (magit-diff-range range args files)) + (_ (call-interactively #'magit-diff-range))))))) + +(defun magit-diff--dwim () + "Return information for performing DWIM diff. + +The information can be in three forms: +1. TYPE + A symbol describing a type of diff where no additional information + is needed to generate the diff. Currently, this includes `staged', + `unstaged' and `unmerged'. +2. (TYPE . VALUE) + Like #1 but the diff requires additional information, which is + given by VALUE. Currently, this includes `commit' and `stash', + where VALUE is the given commit or stash, respectively. +3. RANGE + A string indicating a diff range. + +If no DWIM context is found, nil is returned." + (cond + ((when-let* ((commits (magit-region-values '(commit branch) t))) + ;; Cannot use and-let* because of debbugs#31840. + (deactivate-mark) + (concat (car (last commits)) ".." (car commits)))) + (magit-buffer-refname + (cons 'commit magit-buffer-refname)) + ((derived-mode-p 'magit-stash-mode) + (cons 'commit + (magit-section-case + (commit (oref it value)) + (file (thread-first it + (oref parent) + (oref value))) + (hunk (thread-first it + (oref parent) + (oref parent) + (oref value)))))) + ((derived-mode-p 'magit-revision-mode) + (cons 'commit magit-buffer-revision)) + ((derived-mode-p 'magit-diff-mode) + magit-buffer-range) + (t + (magit-section-case + ([* unstaged] 'unstaged) + ([* staged] 'staged) + (unmerged 'unmerged) + (unpushed (magit-diff--range-to-endpoints (oref it value))) + (unpulled (magit-diff--range-to-endpoints (oref it value))) + (branch (let ((current (magit-get-current-branch)) + (atpoint (oref it value))) + (if (equal atpoint current) + (--if-let (magit-get-upstream-branch) + (format "%s...%s" it current) + (if (magit-anything-modified-p) + current + (cons 'commit current))) + (format "%s...%s" + (or current "HEAD") + atpoint)))) + (commit (cons 'commit (oref it value))) + ([file commit] (cons 'commit (oref (oref it parent) value))) + ([hunk file commit] + (cons 'commit (oref (oref (oref it parent) parent) value))) + (stash (cons 'stash (oref it value))) + (pullreq (forge--pullreq-range (oref it value) t)))))) + +(defun magit-diff--range-to-endpoints (range) + (cond ((string-match "\\.\\.\\." range) (replace-match ".." nil nil range)) + ((string-match "\\.\\." range) (replace-match "..." nil nil range)) + (t range))) + +(defun magit-diff--region-range (&optional interactive mbase) + (when-let* ((commits (magit-region-values '(commit branch) t)) ;debbugs#31840 + (revA (car (last commits))) + (revB (car commits))) + (when interactive + (deactivate-mark)) + (if mbase + (let ((base (magit-git-string "merge-base" revA revB))) + (cond + ((string= (magit-rev-parse revA) base) + (format "%s..%s" revA revB)) + ((string= (magit-rev-parse revB) base) + (format "%s..%s" revB revA)) + (interactive + (let ((main (magit-completing-read "View changes along" + (list revA revB) + nil t nil nil revB))) + (format "%s...%s" + (if (string= main revB) revA revB) main))) + (t "%s...%s" revA revB))) + (format "%s..%s" revA revB)))) + +(defun magit-diff-read-range-or-commit (prompt &optional secondary-default mbase) + "Read range or revision with special diff range treatment. +If MBASE is non-nil, prompt for which rev to place at the end of +a \"revA...revB\" range. Otherwise, always construct +\"revA..revB\" range." + (or (magit-diff--region-range t mbase) + (magit-read-range prompt + (or (pcase (magit-diff--dwim) + (`(commit . ,value) + (format "%s^..%s" value value)) + ((and range (pred stringp)) + range)) + secondary-default + (magit-get-current-branch))))) + +;;;###autoload +(defun magit-diff-range (rev-or-range &optional args files) + "Show differences between two commits. + +REV-OR-RANGE should be a range or a single revision. If it is a +revision, then show changes in the working tree relative to that +revision. If it is a range, but one side is omitted, then show +changes relative to `HEAD'. + +If the region is active, use the revisions on the first and last +line of the region as the two sides of the range. With a prefix +argument, instead of diffing the revisions, choose a revision to +view changes along, starting at the common ancestor of both +revisions (i.e., use a \"...\" range)." + (interactive (cons (magit-diff-read-range-or-commit "Diff for range" + nil current-prefix-arg) + (magit-diff-arguments))) + (magit-diff-setup-buffer rev-or-range nil args files)) + +;;;###autoload +(defun magit-diff-working-tree (&optional rev args files) + "Show changes between the current working tree and the `HEAD' commit. +With a prefix argument show changes between the working tree and +a commit read from the minibuffer." + (interactive + (cons (and current-prefix-arg + (magit-read-branch-or-commit "Diff working tree and commit")) + (magit-diff-arguments))) + (magit-diff-setup-buffer (or rev "HEAD") nil args files)) + +;;;###autoload +(defun magit-diff-staged (&optional rev args files) + "Show changes between the index and the `HEAD' commit. +With a prefix argument show changes between the index and +a commit read from the minibuffer." + (interactive + (cons (and current-prefix-arg + (magit-read-branch-or-commit "Diff index and commit")) + (magit-diff-arguments))) + (magit-diff-setup-buffer rev "--cached" args files)) + +;;;###autoload +(defun magit-diff-unstaged (&optional args files) + "Show changes between the working tree and the index." + (interactive (magit-diff-arguments)) + (magit-diff-setup-buffer nil nil args files)) + +;;;###autoload +(defun magit-diff-unmerged (&optional args files) + "Show changes that are being merged." + (interactive (magit-diff-arguments)) + (unless (magit-merge-in-progress-p) + (user-error "No merge is in progress")) + (magit-diff-setup-buffer (magit--merge-range) nil args files)) + +;;;###autoload +(defun magit-diff-while-committing (&optional args) + "While committing, show the changes that are about to be committed. +While amending, invoking the command again toggles between +showing just the new changes or all the changes that will +be committed." + (interactive (list (car (magit-diff-arguments)))) + (unless (magit-commit-message-buffer) + (user-error "No commit in progress")) + (let ((magit-display-buffer-noselect t)) + (if-let ((diff-buf (magit-get-mode-buffer 'magit-diff-mode 'selected))) + (with-current-buffer diff-buf + (cond ((and (equal magit-buffer-range "HEAD^") + (equal magit-buffer-typearg "--cached")) + (magit-diff-staged nil args)) + ((and (equal magit-buffer-range nil) + (equal magit-buffer-typearg "--cached")) + (magit-diff-while-amending args)) + ((magit-anything-staged-p) + (magit-diff-staged nil args)) + (t + (magit-diff-while-amending args)))) + (if (magit-anything-staged-p) + (magit-diff-staged nil args) + (magit-diff-while-amending args))))) + +(define-key git-commit-mode-map + (kbd "C-c C-d") #'magit-diff-while-committing) + +(defun magit-diff-while-amending (&optional args) + (magit-diff-setup-buffer "HEAD^" "--cached" args nil)) + +;;;###autoload +(defun magit-diff-buffer-file () + "Show diff for the blob or file visited in the current buffer. + +When the buffer visits a blob, then show the respective commit. +When the buffer visits a file, then show the differenced between +`HEAD' and the working tree. In both cases limit the diff to +the file or blob." + (interactive) + (require 'magit) + (if-let ((file (magit-file-relative-name))) + (if magit-buffer-refname + (magit-show-commit magit-buffer-refname + (car (magit-show-commit--arguments)) + (list file)) + (save-buffer) + (let ((line (line-number-at-pos)) + (col (current-column))) + (with-current-buffer + (magit-diff-setup-buffer (or (magit-get-current-branch) "HEAD") + nil + (car (magit-diff-arguments)) + (list file) + magit-diff-buffer-file-locked) + (magit-diff--goto-position file line col)))) + (user-error "Buffer isn't visiting a file"))) + +;;;###autoload +(defun magit-diff-paths (a b) + "Show changes between any two files on disk." + (interactive (list (read-file-name "First file: " nil nil t) + (read-file-name "Second file: " nil nil t))) + (magit-diff-setup-buffer nil "--no-index" + nil (list (magit-convert-filename-for-git + (expand-file-name a)) + (magit-convert-filename-for-git + (expand-file-name b))))) + +(defun magit-show-commit--arguments () + (pcase-let ((`(,args ,diff-files) + (magit-diff-arguments 'magit-revision-mode))) + (list args (if (derived-mode-p 'magit-log-mode) + (and (or magit-revision-filter-files-on-follow + (not (member "--follow" magit-buffer-log-args))) + magit-buffer-log-files) + diff-files)))) + +;;;###autoload +(defun magit-show-commit (rev &optional args files module) + "Visit the revision at point in another buffer. +If there is no revision at point or with a prefix argument prompt +for a revision." + (interactive + (pcase-let* ((mcommit (magit-section-value-if 'module-commit)) + (atpoint (or mcommit + (magit-thing-at-point 'git-revision t) + (magit-branch-or-commit-at-point))) + (`(,args ,files) (magit-show-commit--arguments))) + (list (or (and (not current-prefix-arg) atpoint) + (magit-read-branch-or-commit "Show commit" atpoint)) + args + files + (and mcommit + (magit-section-parent-value (magit-current-section)))))) + (require 'magit) + (let ((file (magit-file-relative-name))) + (magit-with-toplevel + (when module + (setq default-directory + (expand-file-name (file-name-as-directory module)))) + (unless (magit-commit-p rev) + (user-error "%s is not a commit" rev)) + (let ((buf (magit-revision-setup-buffer rev args files))) + (when file + (save-buffer) + (let ((line (magit-diff-visit--offset file (list "-R" rev) + (line-number-at-pos))) + (col (current-column))) + (with-current-buffer buf + (magit-diff--goto-position file line col)))))))) + +(defun magit-diff--locate-hunk (file line &optional parent) + (and-let* ((diff (cl-find-if (lambda (section) + (and (cl-typep section 'magit-file-section) + (equal (oref section value) file))) + (oref (or parent magit-root-section) children)))) + (let (hunk (hunks (oref diff children))) + (cl-block nil + (while (setq hunk (pop hunks)) + (when-let ((range (oref hunk to-range))) + (pcase-let* ((`(,beg ,len) range) + (end (+ beg len))) + (cond ((> beg line) (cl-return (list diff nil))) + ((<= beg line end) (cl-return (list hunk t))) + ((null hunks) (cl-return (list hunk nil))))))))))) + +(defun magit-diff--goto-position (file line column &optional parent) + (when-let ((pos (magit-diff--locate-hunk file line parent))) + (pcase-let ((`(,section ,exact) pos)) + (cond ((cl-typep section 'magit-file-section) + (goto-char (oref section start))) + (exact + (goto-char (oref section content)) + (let ((pos (car (oref section to-range)))) + (while (or (< pos line) + (= (char-after) ?-)) + (unless (= (char-after) ?-) + (cl-incf pos)) + (forward-line))) + (forward-char (1+ column))) + (t + (goto-char (oref section start)) + (setq section (oref section parent)))) + (while section + (when (oref section hidden) + (magit-section-show section)) + (setq section (oref section parent)))) + (magit-section-update-highlight) + t)) + +;;;; Setting Commands + +(defun magit-diff-switch-range-type () + "Convert diff range type. +Change \"revA..revB\" to \"revA...revB\", or vice versa." + (interactive) + (if (and magit-buffer-range + (derived-mode-p 'magit-diff-mode) + (string-match magit-range-re magit-buffer-range)) + (setq magit-buffer-range + (replace-match (if (string= (match-string 2 magit-buffer-range) "..") + "..." + "..") + t t magit-buffer-range 2)) + (user-error "No range to change")) + (magit-refresh)) + +(defun magit-diff-flip-revs () + "Swap revisions in diff range. +Change \"revA..revB\" to \"revB..revA\"." + (interactive) + (if (and magit-buffer-range + (derived-mode-p 'magit-diff-mode) + (string-match magit-range-re magit-buffer-range)) + (progn + (setq magit-buffer-range + (concat (match-string 3 magit-buffer-range) + (match-string 2 magit-buffer-range) + (match-string 1 magit-buffer-range))) + (magit-refresh)) + (user-error "No range to swap"))) + +(defun magit-diff-toggle-file-filter () + "Toggle the file restriction of the current buffer's diffs. +If the current buffer's mode is derived from `magit-log-mode', +toggle the file restriction in the repository's revision buffer +instead." + (interactive) + (cl-flet ((toggle () + (if (or magit-buffer-diff-files + magit-buffer-diff-files-suspended) + (cl-rotatef magit-buffer-diff-files + magit-buffer-diff-files-suspended) + (setq magit-buffer-diff-files + (transient-infix-read 'magit:--))) + (magit-refresh))) + (cond + ((derived-mode-p 'magit-log-mode + 'magit-cherry-mode + 'magit-reflog-mode) + (if-let ((buffer (magit-get-mode-buffer 'magit-revision-mode))) + (with-current-buffer buffer (toggle)) + (message "No revision buffer"))) + ((local-variable-p 'magit-buffer-diff-files) + (toggle)) + (t + (user-error "Cannot toggle file filter in this buffer"))))) + +(defun magit-diff-less-context (&optional count) + "Decrease the context for diff hunks by COUNT lines." + (interactive "p") + (magit-diff-set-context (lambda (cur) (max 0 (- (or cur 0) count))))) + +(defun magit-diff-more-context (&optional count) + "Increase the context for diff hunks by COUNT lines." + (interactive "p") + (magit-diff-set-context (lambda (cur) (+ (or cur 0) count)))) + +(defun magit-diff-default-context () + "Reset context for diff hunks to the default height." + (interactive) + (magit-diff-set-context #'ignore)) + +(defun magit-diff-set-context (fn) + (let* ((def (--if-let (magit-get "diff.context") (string-to-number it) 3)) + (val magit-buffer-diff-args) + (arg (--first (string-match "^-U\\([0-9]+\\)?$" it) val)) + (num (--if-let (and arg (match-string 1 arg)) (string-to-number it) def)) + (val (delete arg val)) + (num (funcall fn num)) + (arg (and num (not (= num def)) (format "-U%i" num))) + (val (if arg (cons arg val) val))) + (setq magit-buffer-diff-args val)) + (magit-refresh)) + +(defun magit-diff-context-p () + (if-let ((arg (--first (string-match "^-U\\([0-9]+\\)$" it) + magit-buffer-diff-args))) + (not (equal arg "-U0")) + t)) + +(defun magit-diff-ignore-any-space-p () + (--any-p (member it magit-buffer-diff-args) + '("--ignore-cr-at-eol" + "--ignore-space-at-eol" + "--ignore-space-change" "-b" + "--ignore-all-space" "-w" + "--ignore-blank-space"))) + +(defun magit-diff-toggle-refine-hunk (&optional style) + "Turn diff-hunk refining on or off. + +If hunk refining is currently on, then hunk refining is turned off. +If hunk refining is off, then hunk refining is turned on, in +`selected' mode (only the currently selected hunk is refined). + +With a prefix argument, the \"third choice\" is used instead: +If hunk refining is currently on, then refining is kept on, but +the refining mode (`selected' or `all') is switched. +If hunk refining is off, then hunk refining is turned on, in +`all' mode (all hunks refined). + +Customize variable `magit-diff-refine-hunk' to change the default mode." + (interactive "P") + (setq-local magit-diff-refine-hunk + (if style + (if (eq magit-diff-refine-hunk 'all) t 'all) + (not magit-diff-refine-hunk))) + (magit-diff-update-hunk-refinement)) + +;;;; Visit Commands +;;;;; Dwim Variants + +(defun magit-diff-visit-file (file &optional other-window) + "From a diff visit the appropriate version of FILE. + +Display the buffer in the selected window. With a prefix +argument OTHER-WINDOW display the buffer in another window +instead. + +Visit the worktree version of the appropriate file. The location +of point inside the diff determines which file is being visited. +The visited version depends on what changes the diff is about. + +1. If the diff shows uncommitted changes (i.e. stage or unstaged + changes), then visit the file in the working tree (i.e. the + same \"real\" file that `find-file' would visit. In all other + cases visit a \"blob\" (i.e. the version of a file as stored + in some commit). + +2. If point is on a removed line, then visit the blob for the + first parent of the commit that removed that line, i.e. the + last commit where that line still exists. + +3. If point is on an added or context line, then visit the blob + that adds that line, or if the diff shows from more than a + single commit, then visit the blob from the last of these + commits. + +In the file-visiting buffer also go to the line that corresponds +to the line that point is on in the diff. + +Note that this command only works if point is inside a diff. +In other cases `magit-find-file' (which see) has to be used." + (interactive (list (magit-file-at-point t t) current-prefix-arg)) + (magit-diff-visit-file--internal file nil + (if other-window + #'switch-to-buffer-other-window + #'pop-to-buffer-same-window))) + +(defun magit-diff-visit-file-other-window (file) + "From a diff visit the appropriate version of FILE in another window. +Like `magit-diff-visit-file' but use +`switch-to-buffer-other-window'." + (interactive (list (magit-file-at-point t t))) + (magit-diff-visit-file--internal file nil #'switch-to-buffer-other-window)) + +(defun magit-diff-visit-file-other-frame (file) + "From a diff visit the appropriate version of FILE in another frame. +Like `magit-diff-visit-file' but use +`switch-to-buffer-other-frame'." + (interactive (list (magit-file-at-point t t))) + (magit-diff-visit-file--internal file nil #'switch-to-buffer-other-frame)) + +;;;;; Worktree Variants + +(defun magit-diff-visit-worktree-file (file &optional other-window) + "From a diff visit the worktree version of FILE. + +Display the buffer in the selected window. With a prefix +argument OTHER-WINDOW display the buffer in another window +instead. + +Visit the worktree version of the appropriate file. The location +of point inside the diff determines which file is being visited. + +Unlike `magit-diff-visit-file' always visits the \"real\" file in +the working tree, i.e the \"current version\" of the file. + +In the file-visiting buffer also go to the line that corresponds +to the line that point is on in the diff. Lines that were added +or removed in the working tree, the index and other commits in +between are automatically accounted for." + (interactive (list (magit-file-at-point t t) current-prefix-arg)) + (magit-diff-visit-file--internal file t + (if other-window + #'switch-to-buffer-other-window + #'pop-to-buffer-same-window))) + +(defun magit-diff-visit-worktree-file-other-window (file) + "From a diff visit the worktree version of FILE in another window. +Like `magit-diff-visit-worktree-file' but use +`switch-to-buffer-other-window'." + (interactive (list (magit-file-at-point t t))) + (magit-diff-visit-file--internal file t #'switch-to-buffer-other-window)) + +(defun magit-diff-visit-worktree-file-other-frame (file) + "From a diff visit the worktree version of FILE in another frame. +Like `magit-diff-visit-worktree-file' but use +`switch-to-buffer-other-frame'." + (interactive (list (magit-file-at-point t t))) + (magit-diff-visit-file--internal file t #'switch-to-buffer-other-frame)) + +;;;;; Internal + +(defun magit-diff-visit-file--internal (file force-worktree fn) + "From a diff visit the appropriate version of FILE. +If FORCE-WORKTREE is non-nil, then visit the worktree version of +the file, even if the diff is about a committed change. Use FN +to display the buffer in some window." + (if (magit-file-accessible-directory-p file) + (magit-diff-visit-directory file force-worktree) + (pcase-let ((`(,buf ,pos) + (magit-diff-visit-file--noselect file force-worktree))) + (funcall fn buf) + (magit-diff-visit-file--setup buf pos) + buf))) + +(defun magit-diff-visit-directory (directory &optional other-window) + "Visit DIRECTORY in some window. +Display the buffer in the selected window unless OTHER-WINDOW is +non-nil. If DIRECTORY is the top-level directory of the current +repository, then visit the containing directory using Dired and +in the Dired buffer put point on DIRECTORY. Otherwise display +the Magit-Status buffer for DIRECTORY." + (if (equal (magit-toplevel directory) + (magit-toplevel)) + (dired-jump other-window (concat directory "/.")) + (let ((display-buffer-overriding-action + (if other-window + '(nil (inhibit-same-window t)) + '(display-buffer-same-window)))) + (magit-status-setup-buffer directory)))) + +(defun magit-diff-visit-file--setup (buf pos) + (if-let ((win (get-buffer-window buf 'visible))) + (with-selected-window win + (when pos + (unless (<= (point-min) pos (point-max)) + (widen)) + (goto-char pos)) + (when (and buffer-file-name + (magit-anything-unmerged-p buffer-file-name)) + (smerge-start-session)) + (run-hooks 'magit-diff-visit-file-hook)) + (error "File buffer is not visible"))) + +(defun magit-diff-visit-file--noselect (&optional file goto-worktree) + (unless file + (setq file (magit-file-at-point t t))) + (let* ((hunk (magit-diff-visit--hunk)) + (goto-from (and hunk + (magit-diff-visit--goto-from-p hunk goto-worktree))) + (line (and hunk (magit-diff-hunk-line hunk goto-from))) + (col (and hunk (magit-diff-hunk-column hunk goto-from))) + (spec (magit-diff--dwim)) + (rev (if goto-from + (magit-diff-visit--range-from spec) + (magit-diff-visit--range-to spec))) + (buf (if (or goto-worktree + (and (not (stringp rev)) + (or magit-diff-visit-avoid-head-blob + (not goto-from)))) + (or (get-file-buffer file) + (find-file-noselect file)) + (magit-find-file-noselect (if (stringp rev) rev "HEAD") + file)))) + (if line + (with-current-buffer buf + (cond ((eq rev 'staged) + (setq line (magit-diff-visit--offset file nil line))) + ((and goto-worktree + (stringp rev)) + (setq line (magit-diff-visit--offset file rev line)))) + (list buf (save-restriction + (widen) + (goto-char (point-min)) + (forward-line (1- line)) + (move-to-column col) + (point)))) + (list buf nil)))) + +(defun magit-diff-visit--hunk () + (when-let* ((scope (magit-diff-scope)) ;debbugs#31840 + (section (magit-current-section))) + (cl-case scope + ((file files) + (setq section (car (oref section children)))) + (list + (setq section (car (oref section children))) + (when section + (setq section (car (oref section children)))))) + (and + ;; Unmerged files appear in the list of staged changes + ;; but unlike in the list of unstaged changes no diffs + ;; are shown here. In that case `section' is nil. + section + ;; Currently the `hunk' type is also abused for file + ;; mode changes, which we are not interested in here. + (not (equal (oref section value) '(chmod))) + section))) + +(defun magit-diff-visit--goto-from-p (section in-worktree) + (and magit-diff-visit-previous-blob + (not in-worktree) + (not (oref section combined)) + (not (< (magit-point) (oref section content))) + (= (char-after (line-beginning-position)) ?-))) + +(defvar magit-diff-visit-jump-to-change t) + +(defun magit-diff-hunk-line (section goto-from) + (save-excursion + (goto-char (line-beginning-position)) + (with-slots (content combined from-ranges from-range to-range) section + (when (or from-range to-range) + (when (and magit-diff-visit-jump-to-change (< (point) content)) + (goto-char content) + (re-search-forward "^[-+]")) + (+ (car (if goto-from from-range to-range)) + (let ((prefix (if combined (length from-ranges) 1)) + (target (point)) + (offset 0)) + (goto-char content) + (while (< (point) target) + (unless (string-search + (if goto-from "+" "-") + (buffer-substring (point) (+ (point) prefix))) + (cl-incf offset)) + (forward-line)) + offset)))))) + +(defun magit-diff-hunk-column (section goto-from) + (if (or (< (magit-point) + (oref section content)) + (and (not goto-from) + (= (char-after (line-beginning-position)) ?-))) + 0 + (max 0 (- (+ (current-column) 2) + (length (oref section value)))))) + +(defun magit-diff-visit--range-from (spec) + (cond ((consp spec) + (concat (cdr spec) "^")) + ((stringp spec) + (car (magit-split-range spec))) + (t + spec))) + +(defun magit-diff-visit--range-to (spec) + (if (symbolp spec) + spec + (let ((rev (if (consp spec) + (cdr spec) + (cdr (magit-split-range spec))))) + (if (and magit-diff-visit-avoid-head-blob + (magit-rev-head-p rev)) + 'unstaged + rev)))) + +(defun magit-diff-visit--offset (file rev line) + (let ((offset 0)) + (with-temp-buffer + (save-excursion + (magit-with-toplevel + (magit-git-insert "diff" rev "--" file))) + (catch 'found + (while (re-search-forward + "^@@ -\\([0-9]+\\),\\([0-9]+\\) \\+\\([0-9]+\\),\\([0-9]+\\) @@.*\n" + nil t) + (let ((from-beg (string-to-number (match-string 1))) + (from-len (string-to-number (match-string 2))) + ( to-len (string-to-number (match-string 4)))) + (if (<= from-beg line) + (if (< (+ from-beg from-len) line) + (cl-incf offset (- to-len from-len)) + (let ((rest (- line from-beg))) + (while (> rest 0) + (pcase (char-after) + (?\s (cl-decf rest)) + (?- (cl-decf offset) (cl-decf rest)) + (?+ (cl-incf offset))) + (forward-line)))) + (throw 'found nil)))))) + (+ line offset))) + +;;;; Scroll Commands + +(defun magit-diff-show-or-scroll-up () + "Update the commit or diff buffer for the thing at point. + +Either show the commit or stash at point in the appropriate +buffer, or if that buffer is already being displayed in the +current frame and contains information about that commit or +stash, then instead scroll the buffer up. If there is no +commit or stash at point, then prompt for a commit." + (interactive) + (magit-diff-show-or-scroll #'scroll-up)) + +(defun magit-diff-show-or-scroll-down () + "Update the commit or diff buffer for the thing at point. + +Either show the commit or stash at point in the appropriate +buffer, or if that buffer is already being displayed in the +current frame and contains information about that commit or +stash, then instead scroll the buffer down. If there is no +commit or stash at point, then prompt for a commit." + (interactive) + (magit-diff-show-or-scroll #'scroll-down)) + +(defun magit-diff-show-or-scroll (fn) + (let (rev cmd buf win) + (cond + (magit-blame-mode + (setq rev (oref (magit-current-blame-chunk) orig-rev)) + (setq cmd #'magit-show-commit) + (setq buf (magit-get-mode-buffer 'magit-revision-mode))) + ((derived-mode-p 'git-rebase-mode) + (with-slots (action-type target) + (git-rebase-current-line) + (if (not (eq action-type 'commit)) + (user-error "No commit on this line") + (setq rev target) + (setq cmd #'magit-show-commit) + (setq buf (magit-get-mode-buffer 'magit-revision-mode))))) + (t + (magit-section-case + (branch + (setq rev (magit-ref-maybe-qualify (oref it value))) + (setq cmd #'magit-show-commit) + (setq buf (magit-get-mode-buffer 'magit-revision-mode))) + (commit + (setq rev (oref it value)) + (setq cmd #'magit-show-commit) + (setq buf (magit-get-mode-buffer 'magit-revision-mode))) + (stash + (setq rev (oref it value)) + (setq cmd #'magit-stash-show) + (setq buf (magit-get-mode-buffer 'magit-stash-mode)))))) + (if rev + (if (and buf + (setq win (get-buffer-window buf)) + (with-current-buffer buf + (and (equal rev magit-buffer-revision) + (equal (magit-rev-parse rev) + magit-buffer-revision-hash)))) + (with-selected-window win + (condition-case nil + (funcall fn) + (error + (goto-char (pcase fn + ('scroll-up (point-min)) + ('scroll-down (point-max))))))) + (let ((magit-display-buffer-noselect t)) + (if (eq cmd #'magit-show-commit) + (apply #'magit-show-commit rev (magit-show-commit--arguments)) + (funcall cmd rev)))) + (call-interactively #'magit-show-commit)))) + +;;;; Section Commands + +(defun magit-section-cycle-diffs () + "Cycle visibility of diff-related sections in the current buffer." + (interactive) + (when-let ((sections + (cond ((derived-mode-p 'magit-status-mode) + (--mapcat + (when it + (when (oref it hidden) + (magit-section-show it)) + (oref it children)) + (list (magit-get-section '((staged) (status))) + (magit-get-section '((unstaged) (status)))))) + ((derived-mode-p 'magit-diff-mode) + (-filter #'magit-file-section-p + (oref magit-root-section children)))))) + (if (--any-p (oref it hidden) sections) + (dolist (s sections) + (magit-section-show s) + (magit-section-hide-children s)) + (let ((children (--mapcat (oref it children) sections))) + (cond ((and (--any-p (oref it hidden) children) + (--any-p (oref it children) children)) + (mapc #'magit-section-show-headings sections)) + ((seq-some #'magit-section-hidden-body children) + (mapc #'magit-section-show-children sections)) + (t + (mapc #'magit-section-hide sections))))))) + +;;; Diff Mode + +(defvar magit-diff-mode-map + (let ((map (make-sparse-keymap))) + (set-keymap-parent map magit-mode-map) + (define-key map (kbd "C-c C-d") #'magit-diff-while-committing) + (define-key map (kbd "C-c C-b") #'magit-go-backward) + (define-key map (kbd "C-c C-f") #'magit-go-forward) + (define-key map (kbd "SPC") #'scroll-up) + (define-key map (kbd "DEL") #'scroll-down) + (define-key map (kbd "j") #'magit-jump-to-diffstat-or-diff) + (define-key map [remap write-file] #'magit-patch-save) + map) + "Keymap for `magit-diff-mode'.") + +(define-derived-mode magit-diff-mode magit-mode "Magit Diff" + "Mode for looking at a Git diff. + +This mode is documented in info node `(magit)Diff Buffer'. + +\\<magit-mode-map>\ +Type \\[magit-refresh] to refresh the current buffer. +Type \\[magit-section-toggle] to expand or hide the section at point. +Type \\[magit-visit-thing] to visit the hunk or file at point. + +Staging and applying changes is documented in info node +`(magit)Staging and Unstaging' and info node `(magit)Applying'. + +\\<magit-hunk-section-map>Type \ +\\[magit-apply] to apply the change at point, \ +\\[magit-stage] to stage, +\\[magit-unstage] to unstage, \ +\\[magit-discard] to discard, or \ +\\[magit-reverse] to reverse it. + +\\{magit-diff-mode-map}" + :group 'magit-diff + (hack-dir-local-variables-non-file-buffer) + (setq magit--imenu-item-types 'file)) + +(put 'magit-diff-mode 'magit-diff-default-arguments + '("--stat" "--no-ext-diff")) + +(defun magit-diff-setup-buffer (range typearg args files &optional locked) + (require 'magit) + (magit-setup-buffer #'magit-diff-mode locked + (magit-buffer-range range) + (magit-buffer-typearg typearg) + (magit-buffer-diff-args args) + (magit-buffer-diff-files files) + (magit-buffer-diff-files-suspended nil))) + +(defun magit-diff-refresh-buffer () + "Refresh the current `magit-diff-mode' buffer." + (magit-set-header-line-format + (if (equal magit-buffer-typearg "--no-index") + (apply #'format "Differences between %s and %s" magit-buffer-diff-files) + (concat (if magit-buffer-range + (cond + ((string-match-p "\\(\\.\\.\\|\\^-\\)" + magit-buffer-range) + (format "Changes in %s" magit-buffer-range)) + ((member "-R" magit-buffer-diff-args) + (format "Changes from working tree to %s" magit-buffer-range)) + (t + (format "Changes from %s to working tree" magit-buffer-range))) + (if (equal magit-buffer-typearg "--cached") + "Staged changes" + "Unstaged changes")) + (pcase (length magit-buffer-diff-files) + (0) + (1 (concat " in file " (car magit-buffer-diff-files))) + (_ (concat " in files " + (mapconcat #'identity magit-buffer-diff-files ", "))))))) + (setq magit-buffer-range-hashed + (and magit-buffer-range (magit-hash-range magit-buffer-range))) + (magit-insert-section (diffbuf) + (magit-run-section-hook 'magit-diff-sections-hook))) + +(cl-defmethod magit-buffer-value (&context (major-mode magit-diff-mode)) + (nconc (cond (magit-buffer-range + (delq nil (list magit-buffer-range magit-buffer-typearg))) + ((equal magit-buffer-typearg "--cached") + (list 'staged)) + (t + (list 'unstaged magit-buffer-typearg))) + (and magit-buffer-diff-files (cons "--" magit-buffer-diff-files)))) + +(cl-defmethod magit-menu-common-value ((_section magit-diff-section)) + (magit-diff-scope)) + +(define-obsolete-variable-alias 'magit-diff-section-base-map + 'magit-diff-section-map "Magit-Section 3.4.0") +(defvar magit-diff-section-map + (let ((map (make-sparse-keymap))) + (magit-menu-set map [magit-cherry-apply] + #'magit-apply "Apply %x" + '(:enable (not (memq (magit-diff-type) '(unstaged staged))))) + (magit-menu-set map [magit-stage-file] + #'magit-stage "Stage %x" + '(:enable (eq (magit-diff-type) 'unstaged))) + (magit-menu-set map [magit-unstage-file] + #'magit-unstage "Unstage %x" + '(:enable (eq (magit-diff-type) 'staged))) + (magit-menu-set map [magit-delete-thing] + #'magit-discard "Discard %x" + '(:enable (not (memq (magit-diff-type) '(committed undefined))))) + (magit-menu-set map [magit-revert-no-commit] + #'magit-reverse "Reverse %x" + '(:enable (not (memq (magit-diff-type) '(untracked unstaged))))) + (magit-menu-set map [magit-visit-thing] + #'magit-diff-visit-file "Visit file") + (magit-menu-set map [magit-file-untrack] + #'magit-file-untrack "Untrack %x" + '(:enable (memq (magit-diff-scope) '(file files)))) + (magit-menu-set map [magit-file-rename] + #'magit-file-rename "Rename file" + '(:enable (eq (magit-diff-scope) 'file))) + (define-key map (kbd "C-j") #'magit-diff-visit-worktree-file) + (define-key map (kbd "C-<return>") #'magit-diff-visit-worktree-file) + (define-key map (kbd "C-x 4 <return>") #'magit-diff-visit-file-other-window) + (define-key map (kbd "C-x 5 <return>") #'magit-diff-visit-file-other-frame) + (define-key map "&" #'magit-do-async-shell-command) + (define-key map "C" #'magit-commit-add-log) + (define-key map (kbd "C-x a") #'magit-add-change-log-entry) + (define-key map (kbd "C-x 4 a") #'magit-add-change-log-entry-other-window) + (define-key map (kbd "C-c C-t") #'magit-diff-trace-definition) + (define-key map (kbd "C-c C-e") #'magit-diff-edit-hunk-commit) + map) + "Keymap for diff sections. +The classes `magit-file-section' and `magit-hunk-section' derive +from the abstract `magit-diff-section' class. Accordingly this +keymap is the parent of their keymaps.") + +(defvar magit-file-section-map + (let ((map (make-sparse-keymap))) + (set-keymap-parent map magit-diff-section-base-map) + map) + "Keymap for `file' sections.") + +(defvar magit-hunk-section-map + (let ((map (make-sparse-keymap))) + (set-keymap-parent map magit-diff-section-base-map) + (let ((m (make-sparse-keymap))) + (define-key m (kbd "RET") #'magit-smerge-keep-current) + (define-key m (kbd "u") #'magit-smerge-keep-upper) + (define-key m (kbd "b") #'magit-smerge-keep-base) + (define-key m (kbd "l") #'magit-smerge-keep-lower) + (define-key map smerge-command-prefix m)) + map) + "Keymap for `hunk' sections.") + +(defconst magit-diff-conflict-headline-re + (concat "^" (regexp-opt + ;; Defined in merge-tree.c in this order. + '("merged" + "added in remote" + "added in both" + "added in local" + "removed in both" + "changed in both" + "removed in local" + "removed in remote")))) + +(defconst magit-diff-headline-re + (concat "^\\(@@@?\\|diff\\|Submodule\\|" + "\\* Unmerged path\\|" + (substring magit-diff-conflict-headline-re 1) + "\\)")) + +(defconst magit-diff-statline-re + (concat "^ ?" + "\\(.*\\)" ; file + "\\( +| +\\)" ; separator + "\\([0-9]+\\|Bin\\(?: +[0-9]+ -> [0-9]+ bytes\\)?$\\) ?" + "\\(\\+*\\)" ; add + "\\(-*\\)$")) ; del + +(defvar magit-diff--reset-non-color-moved + (list + "-c" "color.diff.context=normal" + "-c" "color.diff.plain=normal" ; historical synonym for context + "-c" "color.diff.meta=normal" + "-c" "color.diff.frag=normal" + "-c" "color.diff.func=normal" + "-c" "color.diff.old=normal" + "-c" "color.diff.new=normal" + "-c" "color.diff.commit=normal" + "-c" "color.diff.whitespace=normal" + ;; "git-range-diff" does not support "--color-moved", so we don't + ;; need to reset contextDimmed, oldDimmed, newDimmed, contextBold, + ;; oldBold, and newBold. + )) + +(defun magit-insert-diff () + "Insert the diff into this `magit-diff-mode' buffer." + (magit--insert-diff + "diff" magit-buffer-range "-p" "--no-prefix" + (and (member "--stat" magit-buffer-diff-args) "--numstat") + magit-buffer-typearg + magit-buffer-diff-args "--" + magit-buffer-diff-files)) + +(defun magit--insert-diff (&rest args) + (declare (indent 0)) + (pcase-let ((`(,cmd . ,args) + (flatten-tree args)) + (magit-git-global-arguments + (remove "--literal-pathspecs" magit-git-global-arguments))) + ;; As of Git 2.19.0, we need to generate diffs with + ;; --ita-visible-in-index so that `magit-stage' can work with + ;; intent-to-add files (see #4026). + (when (and (not (equal cmd "merge-tree")) + (magit-git-version>= "2.19.0")) + (push "--ita-visible-in-index" args)) + (setq args (magit-diff--maybe-add-stat-arguments args)) + (when (cl-member-if (lambda (arg) (string-prefix-p "--color-moved" arg)) args) + (push "--color=always" args) + (setq magit-git-global-arguments + (append magit-diff--reset-non-color-moved + magit-git-global-arguments))) + (magit-git-wash #'magit-diff-wash-diffs cmd args))) + +(defun magit-diff--maybe-add-stat-arguments (args) + (if (member "--stat" args) + (append (if (functionp magit-diff-extra-stat-arguments) + (funcall magit-diff-extra-stat-arguments) + magit-diff-extra-stat-arguments) + args) + args)) + +(defun magit-diff-use-window-width-as-stat-width () + "Use the `window-width' as the value of `--stat-width'." + (and-let* ((window (get-buffer-window (current-buffer) 'visible))) + (list (format "--stat-width=%d" (window-width window))))) + +(defun magit-diff-wash-diffs (args &optional limit) + (run-hooks 'magit-diff-wash-diffs-hook) + (when (member "--show-signature" args) + (magit-diff-wash-signature magit-buffer-revision-hash)) + (when (member "--stat" args) + (magit-diff-wash-diffstat)) + (when (re-search-forward magit-diff-headline-re limit t) + (goto-char (line-beginning-position)) + (magit-wash-sequence (apply-partially #'magit-diff-wash-diff args)) + (insert ?\n))) + +(defun magit-jump-to-diffstat-or-diff () + "Jump to the diffstat or diff. +When point is on a file inside the diffstat section, then jump +to the respective diff section, otherwise jump to the diffstat +section or a child thereof." + (interactive) + (--if-let (magit-get-section + (append (magit-section-case + ([file diffstat] `((file . ,(oref it value)))) + (file `((file . ,(oref it value)) (diffstat))) + (t '((diffstat)))) + (magit-section-ident magit-root-section))) + (magit-section-goto it) + (user-error "No diffstat in this buffer"))) + +(defun magit-diff-wash-signature (object) + (when (looking-at "^gpg: ") + (let (title end) + (save-excursion + (while (looking-at "^gpg: ") + (cond + ((looking-at "^gpg: Good signature from") + (setq title (propertize + (buffer-substring (point) (line-end-position)) + 'face 'magit-signature-good))) + ((looking-at "^gpg: Can't check signature") + (setq title (propertize + (buffer-substring (point) (line-end-position)) + 'face '(italic bold))))) + (forward-line)) + (setq end (point-marker))) + (magit-insert-section (signature object title) + (when title + (magit-insert-heading title)) + (goto-char end) + (set-marker end nil) + (insert "\n"))))) + +(defun magit-diff-wash-diffstat () + (let (heading (beg (point))) + (when (re-search-forward "^ ?\\([0-9]+ +files? change[^\n]*\n\\)" nil t) + (setq heading (match-string 1)) + (magit-delete-match) + (goto-char beg) + (magit-insert-section (diffstat) + (insert (propertize heading 'font-lock-face 'magit-diff-file-heading)) + (magit-insert-heading) + (let (files) + (while (looking-at "^[-0-9]+\t[-0-9]+\t\\(.+\\)$") + (push (magit-decode-git-path + (let ((f (match-string 1))) + (cond + ((string-match "\\`\\([^{]+\\){\\(.+\\) => \\(.+\\)}\\'" f) + (concat (match-string 1 f) + (match-string 3 f))) + ((string-match " => " f) + (substring f (match-end 0))) + (t f)))) + files) + (magit-delete-line)) + (setq files (nreverse files)) + (while (looking-at magit-diff-statline-re) + (magit-bind-match-strings (file sep cnt add del) nil + (magit-delete-line) + (when (string-match " +$" file) + (setq sep (concat (match-string 0 file) sep)) + (setq file (substring file 0 (match-beginning 0)))) + (let ((le (length file)) ld) + (setq file (magit-decode-git-path file)) + (setq ld (length file)) + (when (> le ld) + (setq sep (concat (make-string (- le ld) ?\s) sep)))) + (magit-insert-section (file (pop files)) + (insert (propertize file 'font-lock-face 'magit-filename) + sep cnt " ") + (when add + (insert (propertize add 'font-lock-face + 'magit-diffstat-added))) + (when del + (insert (propertize del 'font-lock-face + 'magit-diffstat-removed))) + (insert "\n"))))) + (if (looking-at "^$") (forward-line) (insert "\n")))))) + +(defun magit-diff-wash-diff (args) + (when (cl-member-if (lambda (arg) (string-prefix-p "--color-moved" arg)) args) + (require 'ansi-color) + (ansi-color-apply-on-region (point-min) (point-max))) + (cond + ((looking-at "^Submodule") + (magit-diff-wash-submodule)) + ((looking-at "^\\* Unmerged path \\(.*\\)") + (let ((file (magit-decode-git-path (match-string 1)))) + (magit-delete-line) + (unless (and (derived-mode-p 'magit-status-mode) + (not (member "--cached" args))) + (magit-insert-section (file file) + (insert (propertize + (format "unmerged %s%s" file + (pcase (cddr (car (magit-file-status file))) + ('(?D ?D) " (both deleted)") + ('(?D ?U) " (deleted by us)") + ('(?U ?D) " (deleted by them)") + ('(?A ?A) " (both added)") + ('(?A ?U) " (added by us)") + ('(?U ?A) " (added by them)") + ('(?U ?U) ""))) + 'font-lock-face 'magit-diff-file-heading)) + (insert ?\n)))) + t) + ((looking-at magit-diff-conflict-headline-re) + (let ((long-status (match-string 0)) + (status "BUG") + file orig base) + (if (equal long-status "merged") + (progn (setq status long-status) + (setq long-status nil)) + (setq status (pcase-exhaustive long-status + ("added in remote" "new file") + ("added in both" "new file") + ("added in local" "new file") + ("removed in both" "removed") + ("changed in both" "changed") + ("removed in local" "removed") + ("removed in remote" "removed")))) + (magit-delete-line) + (while (looking-at + "^ \\([^ ]+\\) +[0-9]\\{6\\} \\([a-z0-9]\\{40,\\}\\) \\(.+\\)$") + (magit-bind-match-strings (side _blob name) nil + (pcase side + ("result" (setq file name)) + ("our" (setq orig name)) + ("their" (setq file name)) + ("base" (setq base name)))) + (magit-delete-line)) + (when orig (setq orig (magit-decode-git-path orig))) + (when file (setq file (magit-decode-git-path file))) + (magit-diff-insert-file-section + (or file base) orig status nil nil nil long-status))) + ;; The files on this line may be ambiguous due to whitespace. + ;; That's okay. We can get their names from subsequent headers. + ((looking-at "^diff --\ +\\(?:\\(?1:git\\) \\(?:\\(?2:.+?\\) \\2\\)?\ +\\|\\(?:cc\\|combined\\) \\(?3:.+\\)\\)") + (let ((status (cond ((equal (match-string 1) "git") "modified") + ((derived-mode-p 'magit-revision-mode) "resolved") + (t "unmerged"))) + (orig nil) + (file (or (match-string 2) (match-string 3))) + (header (list (buffer-substring-no-properties + (line-beginning-position) (1+ (line-end-position))))) + (modes nil) + (rename nil)) + (magit-delete-line) + (while (not (or (eobp) (looking-at magit-diff-headline-re))) + (cond + ((looking-at "old mode \\(?:[^\n]+\\)\nnew mode \\(?:[^\n]+\\)\n") + (setq modes (match-string 0))) + ((looking-at "deleted file .+\n") + (setq status "deleted")) + ((looking-at "new file .+\n") + (setq status "new file")) + ((looking-at "rename from \\(.+\\)\nrename to \\(.+\\)\n") + (setq rename (match-string 0)) + (setq orig (match-string 1)) + (setq file (match-string 2)) + (setq status "renamed")) + ((looking-at "copy from \\(.+\\)\ncopy to \\(.+\\)\n") + (setq orig (match-string 1)) + (setq file (match-string 2)) + (setq status "new file")) + ((looking-at "similarity index .+\n")) + ((looking-at "dissimilarity index .+\n")) + ((looking-at "index .+\n")) + ((looking-at "--- \\(.+?\\)\t?\n") + (unless (equal (match-string 1) "/dev/null") + (setq orig (match-string 1)))) + ((looking-at "\\+\\+\\+ \\(.+?\\)\t?\n") + (unless (equal (match-string 1) "/dev/null") + (setq file (match-string 1)))) + ((looking-at "Binary files .+ and .+ differ\n")) + ((looking-at "Binary files differ\n")) + ;; TODO Use all combined diff extended headers. + ((looking-at "mode .+\n")) + (t + (error "BUG: Unknown extended header: %S" + (buffer-substring (point) (line-end-position))))) + ;; These headers are treated as some sort of special hunk. + (unless (or (string-prefix-p "old mode" (match-string 0)) + (string-prefix-p "rename" (match-string 0))) + (push (match-string 0) header)) + (magit-delete-match)) + (setq header (mapconcat #'identity (nreverse header) "")) + (when orig + (setq orig (magit-decode-git-path orig))) + (setq file (magit-decode-git-path file)) + ;; KLUDGE `git-diff' ignores `--no-prefix' for new files and renames at + ;; least. And `git-log' ignores `--no-prefix' when `-L' is used. + (when (or (and file orig + (string-prefix-p "a/" orig) + (string-prefix-p "b/" file)) + (and (derived-mode-p 'magit-log-mode) + (--first (string-prefix-p "-L" it) + magit-buffer-log-args))) + (setq file (substring file 2)) + (when orig + (setq orig (substring orig 2)))) + (magit-diff-insert-file-section file orig status modes rename header))))) + +(defun magit-diff-insert-file-section + (file orig status modes rename header &optional long-status) + (magit-insert-section section + (file file (or (equal status "deleted") + (derived-mode-p 'magit-status-mode))) + (insert (propertize (format "%-10s %s" status + (if (or (not orig) (equal orig file)) + file + (format "%s -> %s" orig file))) + 'font-lock-face 'magit-diff-file-heading)) + (when long-status + (insert (format " (%s)" long-status))) + (magit-insert-heading) + (unless (equal orig file) + (oset section source orig)) + (oset section header header) + (when modes + (magit-insert-section (hunk '(chmod)) + (insert modes) + (magit-insert-heading))) + (when rename + (magit-insert-section (hunk '(rename)) + (insert rename) + (magit-insert-heading))) + (magit-wash-sequence #'magit-diff-wash-hunk))) + +(defun magit-diff-wash-submodule () + ;; See `show_submodule_summary' in submodule.c and "this" commit. + (when (looking-at "^Submodule \\([^ ]+\\)") + (let ((module (match-string 1)) + untracked modified) + (when (looking-at "^Submodule [^ ]+ contains untracked content$") + (magit-delete-line) + (setq untracked t)) + (when (looking-at "^Submodule [^ ]+ contains modified content$") + (magit-delete-line) + (setq modified t)) + (cond + ((and (looking-at "^Submodule \\([^ ]+\\) \\([^ :]+\\)\\( (rewind)\\)?:$") + (equal (match-string 1) module)) + (magit-bind-match-strings (_module range rewind) nil + (magit-delete-line) + (while (looking-at "^ \\([<>]\\) \\(.*\\)$") + (magit-delete-line)) + (when rewind + (setq range (replace-regexp-in-string "[^.]\\(\\.\\.\\)[^.]" + "..." range t t 1))) + (magit-insert-section (magit-module-section module t) + (magit-insert-heading + (propertize (concat "modified " module) + 'font-lock-face 'magit-diff-file-heading) + " (" + (cond (rewind "rewind") + ((string-search "..." range) "non-ff") + (t "new commits")) + (and (or modified untracked) + (concat ", " + (and modified "modified") + (and modified untracked " and ") + (and untracked "untracked") + " content")) + ")") + (let ((default-directory + (file-name-as-directory + (expand-file-name module (magit-toplevel))))) + (magit-git-wash (apply-partially #'magit-log-wash-log 'module) + "log" "--oneline" "--left-right" range) + (delete-char -1))))) + ((and (looking-at "^Submodule \\([^ ]+\\) \\([^ ]+\\) (\\([^)]+\\))$") + (equal (match-string 1) module)) + (magit-bind-match-strings (_module _range msg) nil + (magit-delete-line) + (magit-insert-section (magit-module-section module) + (magit-insert-heading + (propertize (concat "submodule " module) + 'font-lock-face 'magit-diff-file-heading) + " (" msg ")")))) + (t + (magit-insert-section (magit-module-section module) + (magit-insert-heading + (propertize (concat "modified " module) + 'font-lock-face 'magit-diff-file-heading) + " (" + (and modified "modified") + (and modified untracked " and ") + (and untracked "untracked") + " content)"))))))) + +(defun magit-diff-wash-hunk () + (when (looking-at "^@\\{2,\\} \\(.+?\\) @\\{2,\\}\\(?: \\(.*\\)\\)?") + (let* ((heading (match-string 0)) + (ranges (mapcar (lambda (str) + (mapcar #'string-to-number + (split-string (substring str 1) ","))) + (split-string (match-string 1)))) + (about (match-string 2)) + (combined (length= ranges 3)) + (value (cons about ranges))) + (magit-delete-line) + (magit-insert-section section (hunk value) + (insert (propertize (concat heading "\n") + 'font-lock-face 'magit-diff-hunk-heading)) + (magit-insert-heading) + (while (not (or (eobp) (looking-at "^[^-+\s\\]"))) + (forward-line)) + (oset section end (point)) + (oset section washer #'magit-diff-paint-hunk) + (oset section combined combined) + (if combined + (oset section from-ranges (butlast ranges)) + (oset section from-range (car ranges))) + (oset section to-range (car (last ranges))) + (oset section about about))) + t)) + +(defun magit-diff-expansion-threshold (section) + "Keep new diff sections collapsed if washing takes too long." + (and (magit-file-section-p section) + (> (float-time (time-subtract (current-time) magit-refresh-start-time)) + magit-diff-expansion-threshold) + 'hide)) + +(add-hook 'magit-section-set-visibility-hook #'magit-diff-expansion-threshold) + +;;; Revision Mode + +(define-derived-mode magit-revision-mode magit-diff-mode "Magit Rev" + "Mode for looking at a Git commit. + +This mode is documented in info node `(magit)Revision Buffer'. + +\\<magit-mode-map>\ +Type \\[magit-refresh] to refresh the current buffer. +Type \\[magit-section-toggle] to expand or hide the section at point. +Type \\[magit-visit-thing] to visit the hunk or file at point. + +Staging and applying changes is documented in info node +`(magit)Staging and Unstaging' and info node `(magit)Applying'. + +\\<magit-hunk-section-map>Type \ +\\[magit-apply] to apply the change at point, \ +\\[magit-stage] to stage, +\\[magit-unstage] to unstage, \ +\\[magit-discard] to discard, or \ +\\[magit-reverse] to reverse it. + +\\{magit-revision-mode-map}" + :group 'magit-revision + (hack-dir-local-variables-non-file-buffer)) + +(put 'magit-revision-mode 'magit-diff-default-arguments + '("--stat" "--no-ext-diff")) + +(defun magit-revision-setup-buffer (rev args files) + (magit-setup-buffer #'magit-revision-mode nil + (magit-buffer-revision rev) + (magit-buffer-range (format "%s^..%s" rev rev)) + (magit-buffer-diff-args args) + (magit-buffer-diff-files files) + (magit-buffer-diff-files-suspended nil))) + +(defun magit-revision-refresh-buffer () + (setq magit-buffer-revision-hash (magit-rev-hash magit-buffer-revision)) + (magit-set-header-line-format + (concat (magit-object-type magit-buffer-revision-hash) + " " magit-buffer-revision + (pcase (length magit-buffer-diff-files) + (0) + (1 (concat " limited to file " (car magit-buffer-diff-files))) + (_ (concat " limited to files " + (mapconcat #'identity magit-buffer-diff-files ", ")))))) + (magit-insert-section (commitbuf) + (magit-run-section-hook 'magit-revision-sections-hook))) + +(cl-defmethod magit-buffer-value (&context (major-mode magit-revision-mode)) + (cons magit-buffer-revision magit-buffer-diff-files)) + +(defun magit-insert-revision-diff () + "Insert the diff into this `magit-revision-mode' buffer." + (magit--insert-diff + "show" "-p" "--cc" "--format=" "--no-prefix" + (and (member "--stat" magit-buffer-diff-args) "--numstat") + magit-buffer-diff-args + (magit--rev-dereference magit-buffer-revision) + "--" magit-buffer-diff-files)) + +(defun magit-insert-revision-tag () + "Insert tag message and headers into a revision buffer. +This function only inserts anything when `magit-show-commit' is +called with a tag as argument, when that is called with a commit +or a ref which is not a branch, then it inserts nothing." + (when (equal (magit-object-type magit-buffer-revision) "tag") + (magit-insert-section (taginfo) + (let ((beg (point))) + ;; "git verify-tag -v" would output what we need, but the gpg + ;; output is send to stderr and we have no control over the + ;; order in which stdout and stderr are inserted, which would + ;; make parsing hard. We are forced to use "git cat-file tag" + ;; instead, which inserts the signature instead of verifying + ;; it. We remove that later and then insert the verification + ;; output using "git verify-tag" (without the "-v"). + (magit-git-insert "cat-file" "tag" magit-buffer-revision) + (goto-char beg) + (forward-line 3) + (delete-region beg (point))) + (looking-at "^tagger \\([^<]+\\) <\\([^>]+\\)") + (let ((heading (format "Tagger: %s <%s>" + (match-string 1) + (match-string 2)))) + (magit-delete-line) + (insert (propertize heading 'font-lock-face + 'magit-section-secondary-heading))) + (magit-insert-heading) + (forward-line) + (magit-insert-section section (message) + (oset section heading-highlight-face + 'magit-diff-revision-summary-highlight) + (let ((beg (point))) + (forward-line) + (magit--add-face-text-property + beg (point) 'magit-diff-revision-summary)) + (magit-insert-heading) + (if (re-search-forward "-----BEGIN PGP SIGNATURE-----" nil t) + (goto-char (match-beginning 0)) + (goto-char (point-max))) + (insert ?\n)) + (if (re-search-forward "-----BEGIN PGP SIGNATURE-----" nil t) + (progn + (let ((beg (match-beginning 0))) + (re-search-forward "-----END PGP SIGNATURE-----\n") + (delete-region beg (point))) + (save-excursion + (magit-process-git t "verify-tag" magit-buffer-revision)) + (magit-diff-wash-signature magit-buffer-revision)) + (goto-char (point-max))) + (insert ?\n)))) + +(defvar magit-commit-message-section-map + (let ((map (make-sparse-keymap))) + (magit-menu-set map [magit-visit-thing] #'magit-show-commit "Visit %t" + '(:enable (magit-thing-at-point 'git-revision t))) + map) + "Keymap for `commit-message' sections.") + +(defun magit-insert-revision-message () + "Insert the commit message into a revision buffer." + (magit-insert-section section (commit-message) + (oset section heading-highlight-face 'magit-diff-revision-summary-highlight) + (let ((beg (point)) + (rev magit-buffer-revision)) + (insert (with-temp-buffer + (magit-rev-insert-format "%B" rev) + (magit-revision--wash-message))) + (if (= (point) (+ beg 2)) + (progn (backward-delete-char 2) + (insert "(no message)\n")) + (goto-char beg) + (save-excursion + (while (search-forward "\r\n" nil t) ; Remove trailing CRs. + (delete-region (match-beginning 0) (1+ (match-beginning 0))))) + (when magit-revision-fill-summary-line + (let ((fill-column (min magit-revision-fill-summary-line + (window-width)))) + (fill-region (point) (line-end-position)))) + (when magit-revision-use-hash-sections + (save-excursion + ;; Start after beg to prevent a (commit text) section from + ;; starting at the same point as the (commit-message) + ;; section. + (goto-char (1+ beg)) + (while (not (eobp)) + (re-search-forward "\\_<" nil 'move) + (let ((beg (point))) + (re-search-forward "\\_>" nil t) + (when (> (point) beg) + (let ((text (buffer-substring-no-properties beg (point)))) + (when (pcase magit-revision-use-hash-sections + ('quickest ; false negatives and positives + (and (>= (length text) 7) + (string-match-p "[0-9]" text) + (string-match-p "[a-z]" text))) + ('quicker ; false negatives (number-less hashes) + (and (>= (length text) 7) + (string-match-p "[0-9]" text) + (magit-commit-p text))) + ('quick ; false negatives (short hashes) + (and (>= (length text) 7) + (magit-commit-p text))) + ('slow + (magit-commit-p text))) + (put-text-property beg (point) + 'font-lock-face 'magit-hash) + (let ((end (point))) + (goto-char beg) + (magit-insert-section (commit text) + (goto-char end)))))))))) + (save-excursion + (forward-line) + (magit--add-face-text-property + beg (point) 'magit-diff-revision-summary) + (magit-insert-heading)) + (when magit-diff-highlight-keywords + (save-excursion + (while (re-search-forward "\\[[^[]*\\]" nil t) + (let ((beg (match-beginning 0)) + (end (match-end 0))) + (put-text-property + beg end 'font-lock-face + (if-let ((face (get-text-property beg 'font-lock-face))) + (list face 'magit-keyword) + 'magit-keyword)))))) + (goto-char (point-max)))))) + +(defun magit-insert-revision-notes () + "Insert commit notes into a revision buffer." + (let* ((var "core.notesRef") + (def (or (magit-get var) "refs/notes/commits"))) + (dolist (ref (or (magit-list-active-notes-refs))) + (magit-insert-section section (notes ref (not (equal ref def))) + (oset section heading-highlight-face 'magit-diff-hunk-heading-highlight) + (let ((beg (point)) + (rev magit-buffer-revision)) + (insert (with-temp-buffer + (magit-git-insert "-c" (concat "core.notesRef=" ref) + "notes" "show" rev) + (magit-revision--wash-message))) + (if (= (point) beg) + (magit-cancel-section) + (goto-char beg) + (end-of-line) + (insert (format " (%s)" + (propertize (if (string-prefix-p "refs/notes/" ref) + (substring ref 11) + ref) + 'font-lock-face 'magit-refname))) + (forward-char) + (magit--add-face-text-property beg (point) 'magit-diff-hunk-heading) + (magit-insert-heading) + (goto-char (point-max)) + (insert ?\n))))))) + +(defun magit-revision--wash-message () + (let ((major-mode 'git-commit-mode)) + (hack-dir-local-variables) + (hack-local-variables-apply)) + (unless (memq git-commit-major-mode '(nil text-mode)) + (funcall git-commit-major-mode) + (font-lock-ensure)) + (buffer-string)) + +(defun magit-insert-revision-headers () + "Insert headers about the commit into a revision buffer." + (magit-insert-section (headers) + (--when-let (magit-rev-format "%D" magit-buffer-revision "--decorate=full") + (insert (magit-format-ref-labels it) ?\s)) + (insert (propertize + (magit-rev-parse (magit--rev-dereference magit-buffer-revision)) + 'font-lock-face 'magit-hash)) + (magit-insert-heading) + (let ((beg (point))) + (magit-rev-insert-format magit-revision-headers-format + magit-buffer-revision) + (magit-insert-revision-gravatars magit-buffer-revision beg)) + (when magit-revision-insert-related-refs + (dolist (parent (magit-commit-parents magit-buffer-revision)) + (magit-insert-section (commit parent) + (let ((line (magit-rev-format "%h %s" parent))) + (string-match "^\\([^ ]+\\) \\(.*\\)" line) + (magit-bind-match-strings (hash msg) line + (insert "Parent: ") + (insert (propertize hash 'font-lock-face 'magit-hash)) + (insert " " msg "\n"))))) + (magit--insert-related-refs + magit-buffer-revision "--merged" "Merged" + (eq magit-revision-insert-related-refs 'all)) + (magit--insert-related-refs + magit-buffer-revision "--contains" "Contained" + (memq magit-revision-insert-related-refs '(all mixed))) + (when-let ((follows (magit-get-current-tag magit-buffer-revision t))) + (let ((tag (car follows)) + (cnt (cadr follows))) + (magit-insert-section (tag tag) + (insert + (format "Follows: %s (%s)\n" + (propertize tag 'font-lock-face 'magit-tag) + (propertize (number-to-string cnt) + 'font-lock-face 'magit-branch-local)))))) + (when-let ((precedes (magit-get-next-tag magit-buffer-revision t))) + (let ((tag (car precedes)) + (cnt (cadr precedes))) + (magit-insert-section (tag tag) + (insert (format "Precedes: %s (%s)\n" + (propertize tag 'font-lock-face 'magit-tag) + (propertize (number-to-string cnt) + 'font-lock-face 'magit-tag)))))) + (insert ?\n)))) + +(defun magit--insert-related-refs (rev arg title remote) + (when-let ((refs (magit-list-related-branches arg rev (and remote "-a")))) + (insert title ":" (make-string (- 10 (length title)) ?\s)) + (dolist (branch refs) + (if (<= (+ (current-column) 1 (length branch)) + (window-width)) + (insert ?\s) + (insert ?\n (make-string 12 ?\s))) + (magit-insert-section (branch branch) + (insert (propertize branch 'font-lock-face + (if (string-prefix-p "remotes/" branch) + 'magit-branch-remote + 'magit-branch-local))))) + (insert ?\n))) + +(defun magit-insert-revision-gravatars (rev beg) + (when (and magit-revision-show-gravatars + (window-system)) + (require 'gravatar) + (pcase-let ((`(,author . ,committer) + (pcase magit-revision-show-gravatars + ('t '("^Author: " . "^Commit: ")) + ('author '("^Author: " . nil)) + ('committer '(nil . "^Commit: ")) + (_ magit-revision-show-gravatars)))) + (--when-let (and author (magit-rev-format "%aE" rev)) + (magit-insert-revision-gravatar beg rev it author)) + (--when-let (and committer (magit-rev-format "%cE" rev)) + (magit-insert-revision-gravatar beg rev it committer))))) + +(defun magit-insert-revision-gravatar (beg rev email regexp) + (save-excursion + (goto-char beg) + (when (re-search-forward regexp nil t) + (when-let ((window (get-buffer-window))) + (let* ((column (length (match-string 0))) + (font-obj (query-font (font-at (point) window))) + (size (* 2 (+ (aref font-obj 4) + (aref font-obj 5)))) + (align-to (+ column + (ceiling (/ size (aref font-obj 7) 1.0)) + 1)) + (gravatar-size (- size 2))) + (ignore-errors ; service may be unreachable + (gravatar-retrieve email #'magit-insert-revision-gravatar-cb + (list gravatar-size rev + (point-marker) + align-to column)))))))) + +(defun magit-insert-revision-gravatar-cb (image size rev marker align-to column) + (unless (eq image 'error) + (when-let ((buffer (marker-buffer marker))) + (with-current-buffer buffer + (save-excursion + (goto-char marker) + ;; The buffer might display another revision by now or + ;; it might have been refreshed, in which case another + ;; process might already have inserted the image. + (when (and (equal rev magit-buffer-revision) + (not (eq (car-safe + (car-safe + (get-text-property (point) 'display))) + 'image))) + (setf (image-property image :ascent) 'center) + (setf (image-property image :relief) 1) + (setf (image-property image :scale) 1) + (setf (image-property image :height) size) + (let ((top (list image '(slice 0.0 0.0 1.0 0.5))) + (bot (list image '(slice 0.0 0.5 1.0 1.0))) + (align `((space :align-to ,align-to)))) + (when magit-revision-use-gravatar-kludge + (cl-rotatef top bot)) + (let ((inhibit-read-only t)) + (insert (propertize " " 'display top)) + (insert (propertize " " 'display align)) + (forward-line) + (forward-char column) + (insert (propertize " " 'display bot)) + (insert (propertize " " 'display align)))))))))) + +;;; Merge-Preview Mode + +(define-derived-mode magit-merge-preview-mode magit-diff-mode "Magit Merge" + "Mode for previewing a merge." + :group 'magit-diff + (hack-dir-local-variables-non-file-buffer)) + +(put 'magit-merge-preview-mode 'magit-diff-default-arguments + '("--no-ext-diff")) + +(defun magit-merge-preview-setup-buffer (rev) + (magit-setup-buffer #'magit-merge-preview-mode nil + (magit-buffer-revision rev) + (magit-buffer-range (format "%s^..%s" rev rev)))) + +(defun magit-merge-preview-refresh-buffer () + (let* ((branch (magit-get-current-branch)) + (head (or branch (magit-rev-verify "HEAD")))) + (magit-set-header-line-format (format "Preview merge of %s into %s" + magit-buffer-revision + (or branch "HEAD"))) + (magit-insert-section (diffbuf) + (magit--insert-diff + "merge-tree" (magit-git-string "merge-base" head magit-buffer-revision) + head magit-buffer-revision)))) + +(cl-defmethod magit-buffer-value (&context (major-mode magit-merge-preview-mode)) + magit-buffer-revision) + +;;; Diff Sections + +(defun magit-hunk-set-window-start (section) + "When SECTION is a `hunk', ensure that its beginning is visible. +It the SECTION has a different type, then do nothing." + (when (magit-hunk-section-p section) + (magit-section-set-window-start section))) + +(add-hook 'magit-section-movement-hook #'magit-hunk-set-window-start) + +(defun magit-hunk-goto-successor (section arg) + (and (magit-hunk-section-p section) + (and-let* ((parent (magit-get-section + (magit-section-ident + (oref section parent))))) + (let* ((children (oref parent children)) + (siblings (magit-section-siblings section 'prev)) + (previous (nth (length siblings) children))) + (if (not arg) + (--when-let (or previous (car (last children))) + (magit-section-goto it) + t) + (when previous + (magit-section-goto previous)) + (if (and (stringp arg) + (re-search-forward arg (oref parent end) t)) + (goto-char (match-beginning 0)) + (goto-char (oref (car (last children)) end)) + (forward-line -1) + (while (looking-at "^ ") (forward-line -1)) + (while (looking-at "^[-+]") (forward-line -1)) + (forward-line))))))) + +(add-hook 'magit-section-goto-successor-hook #'magit-hunk-goto-successor) + +(defvar magit-unstaged-section-map + (let ((map (make-sparse-keymap))) + (magit-menu-set map [magit-visit-thing] #'magit-diff-unstaged "Visit diff") + (magit-menu-set map [magit-stage-file] #'magit-stage "Stage all") + (magit-menu-set map [magit-delete-thing] #'magit-discard "Discard all") + map) + "Keymap for the `unstaged' section.") + +(magit-define-section-jumper magit-jump-to-unstaged "Unstaged changes" unstaged) + +(defun magit-insert-unstaged-changes () + "Insert section showing unstaged changes." + (magit-insert-section (unstaged) + (magit-insert-heading "Unstaged changes:") + (magit--insert-diff + "diff" magit-buffer-diff-args "--no-prefix" + "--" magit-buffer-diff-files))) + +(defvar magit-staged-section-map + (let ((map (make-sparse-keymap))) + (magit-menu-set map [magit-visit-thing] #'magit-diff-staged "Visit diff") + (magit-menu-set map [magit-unstage-file] #'magit-unstage "Unstage all") + (magit-menu-set map [magit-delete-thing] #'magit-discard "Discard all") + (magit-menu-set map [magit-revert-no-commit] #'magit-reverse "Reverse all") + map) + "Keymap for the `staged' section.") + +(magit-define-section-jumper magit-jump-to-staged "Staged changes" staged) + +(defun magit-insert-staged-changes () + "Insert section showing staged changes." + ;; Avoid listing all files as deleted when visiting a bare repo. + (unless (magit-bare-repo-p) + (magit-insert-section (staged) + (magit-insert-heading "Staged changes:") + (magit--insert-diff + "diff" "--cached" magit-buffer-diff-args "--no-prefix" + "--" magit-buffer-diff-files)))) + +;;; Diff Type + +(defun magit-diff-type (&optional section) + "Return the diff type of SECTION. + +The returned type is one of the symbols `staged', `unstaged', +`committed', or `undefined'. This type serves a similar purpose +as the general type common to all sections (which is stored in +the `type' slot of the corresponding `magit-section' struct) but +takes additional information into account. When the SECTION +isn't related to diffs and the buffer containing it also isn't +a diff-only buffer, then return nil. + +Currently the type can also be one of `tracked' and `untracked' +but these values are not handled explicitly everywhere they +should be and a possible fix could be to just return nil here. + +The section has to be a `diff' or `hunk' section, or a section +whose children are of type `diff'. If optional SECTION is nil, +return the diff type for the current section. In buffers whose +major mode is `magit-diff-mode' SECTION is ignored and the type +is determined using other means. In `magit-revision-mode' +buffers the type is always `committed'. + +Do not confuse this with `magit-diff-scope' (which see)." + (--when-let (or section (magit-current-section)) + (cond ((derived-mode-p 'magit-revision-mode 'magit-stash-mode) 'committed) + ((derived-mode-p 'magit-diff-mode) + (let ((range magit-buffer-range) + (const magit-buffer-typearg)) + (cond ((equal const "--no-index") 'undefined) + ((or (not range) + (magit-rev-eq range "HEAD")) + (if (equal const "--cached") + 'staged + 'unstaged)) + ((equal const "--cached") + (if (magit-rev-head-p range) + 'staged + 'undefined)) ; i.e. committed and staged + (t 'committed)))) + ((derived-mode-p 'magit-status-mode) + (let ((stype (oref it type))) + (if (memq stype '(staged unstaged tracked untracked)) + stype + (pcase stype + ((or 'file 'module) + (let* ((parent (oref it parent)) + (type (oref parent type))) + (if (memq type '(file module)) + (magit-diff-type parent) + type))) + ('hunk (thread-first it + (oref parent) + (oref parent) + (oref type))))))) + ((derived-mode-p 'magit-log-mode) + (if (or (and (magit-section-match 'commit section) + (oref section children)) + (magit-section-match [* file commit] section)) + 'committed + 'undefined)) + (t 'undefined)))) + +(cl-defun magit-diff-scope (&optional (section nil ssection) strict) + "Return the diff scope of SECTION or the selected section(s). + +A diff's \"scope\" describes what part of a diff is selected, it is +a symbol, one of `region', `hunk', `hunks', `file', `files', or +`list'. Do not confuse this with the diff \"type\", as returned by +`magit-diff-type'. + +If optional SECTION is non-nil, then return the scope of that, +ignoring the sections selected by the region. Otherwise return +the scope of the current section, or if the region is active and +selects a valid group of diff related sections, the type of these +sections, i.e. `hunks' or `files'. If SECTION, or if that is nil +the current section, is a `hunk' section; and the region region +starts and ends inside the body of a that section, then the type +is `region'. If the region is empty after a mouse click, then +`hunk' is returned instead of `region'. + +If optional STRICT is non-nil, then return nil if the diff type of +the section at point is `untracked' or the section at point is not +actually a `diff' but a `diffstat' section." + (let ((siblings (and (not ssection) (magit-region-sections nil t)))) + (setq section (or section (car siblings) (magit-current-section))) + (when (and section + (or (not strict) + (and (not (eq (magit-diff-type section) 'untracked)) + (not (eq (--when-let (oref section parent) + (oref it type)) + 'diffstat))))) + (pcase (list (oref section type) + (and siblings t) + (magit-diff-use-hunk-region-p) + ssection) + (`(hunk nil t ,_) + (if (magit-section-internal-region-p section) 'region 'hunk)) + ('(hunk t t nil) 'hunks) + (`(hunk ,_ ,_ ,_) 'hunk) + ('(file t t nil) 'files) + (`(file ,_ ,_ ,_) 'file) + ('(module t t nil) 'files) + (`(module ,_ ,_ ,_) 'file) + (`(,(or 'staged 'unstaged 'untracked) nil ,_ ,_) 'list))))) + +(defun magit-diff-use-hunk-region-p () + (and (region-active-p) + ;; TODO implement this from first principals + ;; currently it's trial-and-error + (not (and (or (eq this-command #'mouse-drag-region) + (eq last-command #'mouse-drag-region) + ;; When another window was previously + ;; selected then the last-command is + ;; some byte-code function. + (byte-code-function-p last-command)) + (eq (region-end) (region-beginning)))))) + +;;; Diff Highlight + +(add-hook 'magit-section-unhighlight-hook #'magit-diff-unhighlight) +(add-hook 'magit-section-highlight-hook #'magit-diff-highlight) + +(defun magit-diff-unhighlight (section selection) + "Remove the highlighting of the diff-related SECTION." + (when (magit-hunk-section-p section) + (magit-diff-paint-hunk section selection nil) + t)) + +(defun magit-diff-highlight (section selection) + "Highlight the diff-related SECTION. +If SECTION is not a diff-related section, then do nothing and +return nil. If SELECTION is non-nil, then it is a list of sections +selected by the region, including SECTION. All of these sections +are highlighted." + (if (and (magit-section-match 'commit section) + (oref section children)) + (progn (if selection + (dolist (section selection) + (magit-diff-highlight-list section selection)) + (magit-diff-highlight-list section)) + t) + (when-let ((scope (magit-diff-scope section t))) + (cond ((eq scope 'region) + (magit-diff-paint-hunk section selection t)) + (selection + (dolist (section selection) + (magit-diff-highlight-recursive section selection))) + (t + (magit-diff-highlight-recursive section))) + t))) + +(defun magit-diff-highlight-recursive (section &optional selection) + (pcase (magit-diff-scope section) + ('list (magit-diff-highlight-list section selection)) + ('file (magit-diff-highlight-file section selection)) + ('hunk (magit-diff-highlight-heading section selection) + (magit-diff-paint-hunk section selection t)) + (_ (magit-section-highlight section nil)))) + +(defun magit-diff-highlight-list (section &optional selection) + (let ((beg (oref section start)) + (cnt (oref section content)) + (end (oref section end))) + (when (or (eq this-command #'mouse-drag-region) + (not selection)) + (unless (and (region-active-p) + (<= (region-beginning) beg)) + (magit-section-make-overlay beg cnt 'magit-section-highlight)) + (if (oref section hidden) + (oset section washer #'ignore) + (dolist (child (oref section children)) + (when (or (eq this-command #'mouse-drag-region) + (not (and (region-active-p) + (<= (region-beginning) + (oref child start))))) + (magit-diff-highlight-recursive child selection))))) + (when magit-diff-highlight-hunk-body + (magit-section-make-overlay (1- end) end 'magit-section-highlight)))) + +(defun magit-diff-highlight-file (section &optional selection) + (magit-diff-highlight-heading section selection) + (when (or (not (oref section hidden)) + (cl-typep section 'magit-module-section)) + (dolist (child (oref section children)) + (magit-diff-highlight-recursive child selection)))) + +(defun magit-diff-highlight-heading (section &optional selection) + (magit-section-make-overlay + (oref section start) + (or (oref section content) + (oref section end)) + (pcase (list (oref section type) + (and (member section selection) + (not (eq this-command #'mouse-drag-region)))) + ('(file t) 'magit-diff-file-heading-selection) + ('(file nil) 'magit-diff-file-heading-highlight) + ('(module t) 'magit-diff-file-heading-selection) + ('(module nil) 'magit-diff-file-heading-highlight) + ('(hunk t) 'magit-diff-hunk-heading-selection) + ('(hunk nil) 'magit-diff-hunk-heading-highlight)))) + +;;; Hunk Paint + +(cl-defun magit-diff-paint-hunk + (section &optional selection + (highlight (magit-section-selected-p section selection))) + (let (paint) + (unless magit-diff-highlight-hunk-body + (setq highlight nil)) + (cond (highlight + (unless (oref section hidden) + (add-to-list 'magit-section-highlighted-sections section) + (cond ((memq section magit-section-unhighlight-sections) + (setq magit-section-unhighlight-sections + (delq section magit-section-unhighlight-sections))) + (magit-diff-highlight-hunk-body + (setq paint t))))) + (t + (cond ((and (oref section hidden) + (memq section magit-section-unhighlight-sections)) + (add-to-list 'magit-section-highlighted-sections section) + (setq magit-section-unhighlight-sections + (delq section magit-section-unhighlight-sections))) + (t + (setq paint t))))) + (when paint + (save-excursion + (goto-char (oref section start)) + (let ((end (oref section end)) + (merging (looking-at "@@@")) + (diff-type (magit-diff-type)) + (stage nil) + (tab-width (magit-diff-tab-width + (magit-section-parent-value section)))) + (forward-line) + (while (< (point) end) + (when (and magit-diff-hide-trailing-cr-characters + (char-equal ?\r (char-before (line-end-position)))) + (put-text-property (1- (line-end-position)) (line-end-position) + 'invisible t)) + (put-text-property + (point) (1+ (line-end-position)) 'font-lock-face + (cond + ((looking-at "^\\+\\+?\\([<=|>]\\)\\{7\\}") + (setq stage (pcase (list (match-string 1) highlight) + ('("<" nil) 'magit-diff-our) + ('("<" t) 'magit-diff-our-highlight) + ('("|" nil) 'magit-diff-base) + ('("|" t) 'magit-diff-base-highlight) + ('("=" nil) 'magit-diff-their) + ('("=" t) 'magit-diff-their-highlight) + ('(">" nil) nil))) + 'magit-diff-conflict-heading) + ((looking-at (if merging "^\\(\\+\\| \\+\\)" "^\\+")) + (magit-diff-paint-tab merging tab-width) + (magit-diff-paint-whitespace merging 'added diff-type) + (or stage + (if highlight 'magit-diff-added-highlight 'magit-diff-added))) + ((looking-at (if merging "^\\(-\\| -\\)" "^-")) + (magit-diff-paint-tab merging tab-width) + (magit-diff-paint-whitespace merging 'removed diff-type) + (if highlight 'magit-diff-removed-highlight 'magit-diff-removed)) + (t + (magit-diff-paint-tab merging tab-width) + (magit-diff-paint-whitespace merging 'context diff-type) + (if highlight 'magit-diff-context-highlight 'magit-diff-context)))) + (forward-line)))))) + (magit-diff-update-hunk-refinement section)) + +(defvar magit-diff--tab-width-cache nil) + +(defun magit-diff-tab-width (file) + (setq file (expand-file-name file)) + (cl-flet ((cache (value) + (let ((elt (assoc file magit-diff--tab-width-cache))) + (if elt + (setcdr elt value) + (setq magit-diff--tab-width-cache + (cons (cons file value) + magit-diff--tab-width-cache)))) + value)) + (cond + ((not magit-diff-adjust-tab-width) + tab-width) + ((and-let* ((buffer (find-buffer-visiting file))) + (cache (buffer-local-value 'tab-width buffer)))) + ((and-let* ((elt (assoc file magit-diff--tab-width-cache))) + (or (cdr elt) + tab-width))) + ((or (eq magit-diff-adjust-tab-width 'always) + (and (numberp magit-diff-adjust-tab-width) + (>= magit-diff-adjust-tab-width + (nth 7 (file-attributes file))))) + (cache (buffer-local-value 'tab-width (find-file-noselect file)))) + (t + (cache nil) + tab-width)))) + +(defun magit-diff-paint-tab (merging width) + (save-excursion + (forward-char (if merging 2 1)) + (while (= (char-after) ?\t) + (put-text-property (point) (1+ (point)) + 'display (list (list 'space :width width))) + (forward-char)))) + +(defun magit-diff-paint-whitespace (merging line-type diff-type) + (when (and magit-diff-paint-whitespace + (or (not (memq magit-diff-paint-whitespace '(uncommitted status))) + (memq diff-type '(staged unstaged))) + (cl-case line-type + (added t) + (removed (memq magit-diff-paint-whitespace-lines '(all both))) + (context (memq magit-diff-paint-whitespace-lines '(all))))) + (let ((prefix (if merging "^[-\\+\s]\\{2\\}" "^[-\\+\s]")) + (indent + (if (local-variable-p 'magit-diff-highlight-indentation) + magit-diff-highlight-indentation + (setq-local + magit-diff-highlight-indentation + (cdr (--first (string-match-p (car it) default-directory) + (nreverse + (default-value + 'magit-diff-highlight-indentation)))))))) + (when (and magit-diff-highlight-trailing + (looking-at (concat prefix ".*?\\([ \t]+\\)$"))) + (let ((ov (make-overlay (match-beginning 1) (match-end 1) nil t))) + (overlay-put ov 'font-lock-face 'magit-diff-whitespace-warning) + (overlay-put ov 'priority 2) + (overlay-put ov 'evaporate t))) + (when (or (and (eq indent 'tabs) + (looking-at (concat prefix "\\( *\t[ \t]*\\)"))) + (and (integerp indent) + (looking-at (format "%s\\([ \t]* \\{%s,\\}[ \t]*\\)" + prefix indent)))) + (let ((ov (make-overlay (match-beginning 1) (match-end 1) nil t))) + (overlay-put ov 'font-lock-face 'magit-diff-whitespace-warning) + (overlay-put ov 'priority 2) + (overlay-put ov 'evaporate t)))))) + +(defun magit-diff-update-hunk-refinement (&optional section) + (if section + (unless (oref section hidden) + (pcase (list magit-diff-refine-hunk + (oref section refined) + (eq section (magit-current-section))) + ((or `(all nil ,_) '(t nil t)) + (oset section refined t) + (save-excursion + (goto-char (oref section start)) + ;; `diff-refine-hunk' does not handle combined diffs. + (unless (looking-at "@@@") + (let ((smerge-refine-ignore-whitespace + magit-diff-refine-ignore-whitespace) + ;; Avoid fsyncing many small temp files + (write-region-inhibit-fsync t)) + (diff-refine-hunk))))) + ((or `(nil t ,_) '(t t nil)) + (oset section refined nil) + (remove-overlays (oref section start) + (oref section end) + 'diff-mode 'fine)))) + (cl-labels ((recurse (section) + (if (magit-section-match 'hunk section) + (magit-diff-update-hunk-refinement section) + (dolist (child (oref section children)) + (recurse child))))) + (recurse magit-root-section)))) + + +;;; Hunk Region + +(defun magit-diff-hunk-region-beginning () + (save-excursion (goto-char (region-beginning)) + (line-beginning-position))) + +(defun magit-diff-hunk-region-end () + (save-excursion (goto-char (region-end)) + (line-end-position))) + +(defun magit-diff-update-hunk-region (section) + "Highlight the hunk-internal region if any." + (when (and (eq (oref section type) 'hunk) + (eq (magit-diff-scope section t) 'region)) + (magit-diff--make-hunk-overlay + (oref section start) + (1- (oref section content)) + 'font-lock-face 'magit-diff-lines-heading + 'display (magit-diff-hunk-region-header section) + 'after-string (magit-diff--hunk-after-string 'magit-diff-lines-heading)) + (run-hook-with-args 'magit-diff-highlight-hunk-region-functions section) + t)) + +(defun magit-diff-highlight-hunk-region-dim-outside (section) + "Dim the parts of the hunk that are outside the hunk-internal region. +This is done by using the same foreground and background color +for added and removed lines as for context lines." + (let ((face (if magit-diff-highlight-hunk-body + 'magit-diff-context-highlight + 'magit-diff-context))) + (when magit-diff-unmarked-lines-keep-foreground + (setq face `(,@(and (>= emacs-major-version 27) '(:extend t)) + :background ,(face-attribute face :background)))) + (magit-diff--make-hunk-overlay (oref section content) + (magit-diff-hunk-region-beginning) + 'font-lock-face face + 'priority 2) + (magit-diff--make-hunk-overlay (1+ (magit-diff-hunk-region-end)) + (oref section end) + 'font-lock-face face + 'priority 2))) + +(defun magit-diff-highlight-hunk-region-using-face (_section) + "Highlight the hunk-internal region by making it bold. +Or rather highlight using the face `magit-diff-hunk-region', though +changing only the `:weight' and/or `:slant' is recommended for that +face." + (magit-diff--make-hunk-overlay (magit-diff-hunk-region-beginning) + (1+ (magit-diff-hunk-region-end)) + 'font-lock-face 'magit-diff-hunk-region)) + +(defun magit-diff-highlight-hunk-region-using-overlays (section) + "Emphasize the hunk-internal region using delimiting horizontal lines. +This is implemented as single-pixel newlines places inside overlays." + (if (window-system) + (let ((beg (magit-diff-hunk-region-beginning)) + (end (magit-diff-hunk-region-end)) + (str (propertize + (concat (propertize "\s" 'display '(space :height (1))) + (propertize "\n" 'line-height t)) + 'font-lock-face 'magit-diff-lines-boundary))) + (magit-diff--make-hunk-overlay beg (1+ beg) 'before-string str) + (magit-diff--make-hunk-overlay end (1+ end) 'after-string str)) + (magit-diff-highlight-hunk-region-using-face section))) + +(defun magit-diff-highlight-hunk-region-using-underline (section) + "Emphasize the hunk-internal region using delimiting horizontal lines. +This is implemented by overlining and underlining the first and +last (visual) lines of the region." + (if (window-system) + (let* ((beg (magit-diff-hunk-region-beginning)) + (end (magit-diff-hunk-region-end)) + (beg-eol (save-excursion (goto-char beg) + (end-of-visual-line) + (point))) + (end-bol (save-excursion (goto-char end) + (beginning-of-visual-line) + (point))) + (color (face-background 'magit-diff-lines-boundary nil t))) + (cl-flet ((ln (b e &rest face) + (magit-diff--make-hunk-overlay + b e 'font-lock-face face 'after-string + (magit-diff--hunk-after-string face)))) + (if (= beg end-bol) + (ln beg beg-eol :overline color :underline color) + (ln beg beg-eol :overline color) + (ln end-bol end :underline color)))) + (magit-diff-highlight-hunk-region-using-face section))) + +(defun magit-diff--make-hunk-overlay (start end &rest args) + (let ((ov (make-overlay start end nil t))) + (overlay-put ov 'evaporate t) + (while args (overlay-put ov (pop args) (pop args))) + (push ov magit-section--region-overlays) + ov)) + +(defun magit-diff--hunk-after-string (face) + (propertize "\s" + 'font-lock-face face + 'display (list 'space :align-to + `(+ (0 . right) + ,(min (window-hscroll) + (- (line-end-position) + (line-beginning-position))))) + ;; This prevents the cursor from being rendered at the + ;; edge of the window. + 'cursor t)) + +;;; Hunk Utilities + +(defun magit-diff-inside-hunk-body-p () + "Return non-nil if point is inside the body of a hunk." + (and (magit-section-match 'hunk) + (and-let* ((content (oref (magit-current-section) content))) + (> (magit-point) content)))) + +;;; Diff Extract + +(defun magit-diff-file-header (section &optional no-rename) + (when (magit-hunk-section-p section) + (setq section (oref section parent))) + (and (magit-file-section-p section) + (let ((header (oref section header))) + (if no-rename + (replace-regexp-in-string + "^--- \\(.+\\)" (oref section value) header t t 1) + header)))) + +(defun magit-diff-hunk-region-header (section) + (let ((patch (magit-diff-hunk-region-patch section))) + (string-match "\n" patch) + (substring patch 0 (1- (match-end 0))))) + +(defun magit-diff-hunk-region-patch (section &optional args) + (let ((op (if (member "--reverse" args) "+" "-")) + (sbeg (oref section start)) + (rbeg (magit-diff-hunk-region-beginning)) + (rend (region-end)) + (send (oref section end)) + (patch nil)) + (save-excursion + (goto-char sbeg) + (while (< (point) send) + (looking-at "\\(.\\)\\([^\n]*\n\\)") + (cond ((or (string-match-p "[@ ]" (match-string-no-properties 1)) + (and (>= (point) rbeg) + (<= (point) rend))) + (push (match-string-no-properties 0) patch)) + ((equal op (match-string-no-properties 1)) + (push (concat " " (match-string-no-properties 2)) patch))) + (forward-line))) + (let ((buffer-list-update-hook nil)) ; #3759 + (with-temp-buffer + (insert (mapconcat #'identity (reverse patch) "")) + (diff-fixup-modifs (point-min) (point-max)) + (setq patch (buffer-string)))) + patch)) + +;;; _ +(provide 'magit-diff) +;;; magit-diff.el ends here |