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+;;; magit-branch.el --- Branch support -*- 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 branches. It defines commands
+;; for creating, checking out, manipulating, and configuring branches.
+;; Commands defined here are mainly concerned with branches as
+;; pointers, commands that deal with what a branch points at, are
+;; defined elsewhere.
+
+;;; Code:
+
+(require 'magit)
+(require 'magit-reset)
+
+;;; Options
+
+(defcustom magit-branch-read-upstream-first t
+ "Whether to read upstream before name of new branch when creating a branch.
+
+`nil' Read the branch name first.
+`t' Read the upstream first.
+`fallback' Read the upstream first, but if it turns out that the chosen
+ value is not a valid upstream (because it cannot be resolved
+ as an existing revision), then treat it as the name of the
+ new branch and continue by reading the upstream next."
+ :package-version '(magit . "2.2.0")
+ :group 'magit-commands
+ :type '(choice (const :tag "read branch name first" nil)
+ (const :tag "read upstream first" t)
+ (const :tag "read upstream first, with fallback" fallback)))
+
+(defcustom magit-branch-prefer-remote-upstream nil
+ "Whether to favor remote upstreams when creating new branches.
+
+When a new branch is created, then the branch, commit, or stash
+at point is suggested as the default starting point of the new
+branch, or if there is no such revision at point the current
+branch. In either case the user may choose another starting
+point.
+
+If the chosen starting point is a branch, then it may also be set
+as the upstream of the new branch, depending on the value of the
+Git variable `branch.autoSetupMerge'. By default this is done
+for remote branches, but not for local branches.
+
+You might prefer to always use some remote branch as upstream.
+If the chosen starting point is (1) a local branch, (2) whose
+name matches a member of the value of this option, (3) the
+upstream of that local branch is a remote branch with the same
+name, and (4) that remote branch can be fast-forwarded to the
+local branch, then the chosen branch is used as starting point,
+but its own upstream is used as the upstream of the new branch.
+
+Members of this option's value are treated as branch names that
+have to match exactly unless they contain a character that makes
+them invalid as a branch name. Recommended characters to use
+to trigger interpretation as a regexp are \"*\" and \"^\". Some
+other characters which you might expect to be invalid, actually
+are not, e.g. \".+$\" are all perfectly valid. More precisely,
+if `git check-ref-format --branch STRING' exits with a non-zero
+status, then treat STRING as a regexp.
+
+Assuming the chosen branch matches these conditions you would end
+up with with e.g.:
+
+ feature --upstream--> origin/master
+
+instead of
+
+ feature --upstream--> master --upstream--> origin/master
+
+Which you prefer is a matter of personal preference. If you do
+prefer the former, then you should add branches such as \"master\",
+\"next\", and \"maint\" to the value of this options."
+ :package-version '(magit . "2.4.0")
+ :group 'magit-commands
+ :type '(repeat string))
+
+(defcustom magit-branch-adjust-remote-upstream-alist nil
+ "Alist of upstreams to be used when branching from remote branches.
+
+When creating a local branch from an ephemeral branch located
+on a remote, e.g. a feature or hotfix branch, then that remote
+branch should usually not be used as the upstream branch, since
+the push-remote already allows accessing it and having both the
+upstream and the push-remote reference the same related branch
+would be wasteful. Instead a branch like \"maint\" or \"master\"
+should be used as the upstream.
+
+This option allows specifying the branch that should be used as
+the upstream when branching certain remote branches. The value
+is an alist of the form ((UPSTREAM . RULE)...). The first
+element is used whose UPSTREAM exists and whose RULE matches
+the name of the new branch. Subsequent elements are ignored.
+
+UPSTREAM is the branch to be used as the upstream for branches
+specified by RULE. It can be a local or a remote branch.
+
+RULE can either be a regular expression, matching branches whose
+upstream should be the one specified by UPSTREAM. Or it can be
+a list of the only branches that should *not* use UPSTREAM; all
+other branches will. Matching is done after stripping the remote
+part of the name of the branch that is being branched from.
+
+If you use a finite set of non-ephemeral branches across all your
+repositories, then you might use something like:
+
+ ((\"origin/master\" . (\"master\" \"next\" \"maint\")))
+
+Or if the names of all your ephemeral branches contain a slash,
+at least in some repositories, then a good value could be:
+
+ ((\"origin/master\" . \"/\"))
+
+Of course you can also fine-tune:
+
+ ((\"origin/maint\" . \"\\\\\\=`hotfix/\")
+ (\"origin/master\" . \"\\\\\\=`feature/\"))
+
+UPSTREAM can be a local branch:
+
+ ((\"master\" . (\"master\" \"next\" \"maint\")))
+
+Because the main branch is no longer almost always named \"master\"
+you should also account for other common names:
+
+ ((\"main\" . (\"main\" \"master\" \"next\" \"maint\"))
+ (\"master\" . (\"main\" \"master\" \"next\" \"maint\")))
+
+If you use remote branches as UPSTREAM, then you might also want
+to set `magit-branch-prefer-remote-upstream' to a non-nil value.
+However, I recommend that you use local branches as UPSTREAM."
+ :package-version '(magit . "2.9.0")
+ :group 'magit-commands
+ :type '(repeat (cons (string :tag "Use upstream")
+ (choice :tag "for branches"
+ (regexp :tag "matching")
+ (repeat :tag "except"
+ (string :tag "branch"))))))
+
+(defcustom magit-branch-rename-push-target t
+ "Whether the push-remote setup is preserved when renaming a branch.
+
+The command `magit-branch-rename' renames a branch named OLD to
+NEW. This option controls how much of the push-remote setup is
+preserved when doing so.
+
+When nil, then preserve nothing and unset `branch.OLD.pushRemote'.
+
+When `local-only', then first set `branch.NEW.pushRemote' to the
+ same value as `branch.OLD.pushRemote', provided the latter is
+ actually set and unless the former already has another value.
+
+When t, then rename the branch named OLD on the remote specified
+ by `branch.OLD.pushRemote' to NEW, provided OLD exists on that
+ remote and unless NEW already exists on the remote.
+
+When `forge-only' and the `forge' package is available, then
+ behave like `t' if the remote points to a repository on a forge
+ (currently Github or Gitlab), otherwise like `local-only'.
+
+Another supported but obsolete value is `github-only'. It is a
+ misnomer because it now treated as an alias for `forge-only'."
+ :package-version '(magit . "2.90.0")
+ :group 'magit-commands
+ :type '(choice
+ (const :tag "Don't preserve push-remote setup" nil)
+ (const :tag "Preserve push-remote setup" local-only)
+ (const :tag "... and rename corresponding branch on remote" t)
+ (const :tag "... but only if remote is on a forge" forge-only)))
+
+(defcustom magit-branch-direct-configure t
+ "Whether the command `magit-branch' shows Git variables.
+When set to nil, no variables are displayed by this transient
+command, instead the sub-transient `magit-branch-configure'
+has to be used to view and change branch related variables."
+ :package-version '(magit . "2.7.0")
+ :group 'magit-commands
+ :type 'boolean)
+
+(defcustom magit-published-branches '("origin/master")
+ "List of branches that are considered to be published."
+ :package-version '(magit . "2.13.0")
+ :group 'magit-commands
+ :type '(repeat string))
+
+;;; Commands
+
+;;;###autoload (autoload 'magit-branch "magit" nil t)
+(transient-define-prefix magit-branch (branch)
+ "Add, configure or remove a branch."
+ :man-page "git-branch"
+ ["Arguments"
+ (7 "-r" "Recurse submodules when checking out an existing branch"
+ "--recurse-submodules"
+ :if (lambda () (magit-git-version>= "2.13")))]
+ ["Variables"
+ :if (lambda ()
+ (and magit-branch-direct-configure
+ (oref transient--prefix scope)))
+ ("d" magit-branch.<branch>.description)
+ ("u" magit-branch.<branch>.merge/remote)
+ ("r" magit-branch.<branch>.rebase)
+ ("p" magit-branch.<branch>.pushRemote)]
+ [["Checkout"
+ ("b" "branch/revision" magit-checkout)
+ ("l" "local branch" magit-branch-checkout)
+ (6 "o" "new orphan" magit-branch-orphan)]
+ [""
+ ("c" "new branch" magit-branch-and-checkout)
+ ("s" "new spin-off" magit-branch-spinoff)
+ (5 "w" "new worktree" magit-worktree-checkout)]
+ ["Create"
+ ("n" "new branch" magit-branch-create)
+ ("S" "new spin-out" magit-branch-spinout)
+ (5 "W" "new worktree" magit-worktree-branch)]
+ ["Do"
+ ("C" "configure..." magit-branch-configure)
+ ("m" "rename" magit-branch-rename)
+ ("x" "reset" magit-branch-reset)
+ ("k" "delete" magit-branch-delete)]
+ [""
+ (7 "h" "shelve" magit-branch-shelve)
+ (7 "H" "unshelve" magit-branch-unshelve)]]
+ (interactive (list (magit-get-current-branch)))
+ (transient-setup 'magit-branch nil nil :scope branch))
+
+(defun magit-branch-arguments ()
+ (transient-args 'magit-branch))
+
+;;;###autoload
+(defun magit-checkout (revision &optional args)
+ "Checkout REVISION, updating the index and the working tree.
+If REVISION is a local branch, then that becomes the current
+branch. If it is something else, then `HEAD' becomes detached.
+Checkout fails if the working tree or the staging area contain
+changes.
+\n(git checkout REVISION)."
+ (interactive (list (magit-read-other-branch-or-commit "Checkout")
+ (magit-branch-arguments)))
+ (when (string-match "\\`heads/\\(.+\\)" revision)
+ (setq revision (match-string 1 revision)))
+ (magit-run-git "checkout" args revision))
+
+;;;###autoload
+(defun magit-branch-create (branch start-point)
+ "Create BRANCH at branch or revision START-POINT."
+ (interactive (magit-branch-read-args "Create branch"))
+ (magit-call-git "branch" branch start-point)
+ (magit-branch-maybe-adjust-upstream branch start-point)
+ (magit-refresh))
+
+;;;###autoload
+(defun magit-branch-and-checkout (branch start-point &optional args)
+ "Create and checkout BRANCH at branch or revision START-POINT."
+ (interactive (append (magit-branch-read-args "Create and checkout branch")
+ (list (magit-branch-arguments))))
+ (if (string-match-p "^stash@{[0-9]+}$" start-point)
+ (magit-run-git "stash" "branch" branch start-point)
+ (magit-call-git "checkout" args "-b" branch start-point)
+ (magit-branch-maybe-adjust-upstream branch start-point)
+ (magit-refresh)))
+
+;;;###autoload
+(defun magit-branch-or-checkout (arg &optional start-point)
+ "Hybrid between `magit-checkout' and `magit-branch-and-checkout'.
+
+Ask the user for an existing branch or revision. If the user
+input actually can be resolved as a branch or revision, then
+check that out, just like `magit-checkout' would.
+
+Otherwise create and checkout a new branch using the input as
+its name. Before doing so read the starting-point for the new
+branch. This is similar to what `magit-branch-and-checkout'
+does."
+ (interactive
+ (let ((arg (magit-read-other-branch-or-commit "Checkout")))
+ (list arg
+ (and (not (magit-commit-p arg))
+ (magit-read-starting-point "Create and checkout branch" arg)))))
+ (when (string-match "\\`heads/\\(.+\\)" arg)
+ (setq arg (match-string 1 arg)))
+ (if start-point
+ (magit-branch-and-checkout arg start-point)
+ (magit-checkout arg)))
+
+;;;###autoload
+(defun magit-branch-checkout (branch &optional start-point)
+ "Checkout an existing or new local branch.
+
+Read a branch name from the user offering all local branches and
+a subset of remote branches as candidates. Omit remote branches
+for which a local branch by the same name exists from the list
+of candidates. The user can also enter a completely new branch
+name.
+
+- If the user selects an existing local branch, then check that
+ out.
+
+- If the user selects a remote branch, then create and checkout
+ a new local branch with the same name. Configure the selected
+ remote branch as push target.
+
+- If the user enters a new branch name, then create and check
+ that out, after also reading the starting-point from the user.
+
+In the latter two cases the upstream is also set. Whether it is
+set to the chosen START-POINT or something else depends on the
+value of `magit-branch-adjust-remote-upstream-alist', just like
+when using `magit-branch-and-checkout'."
+ (interactive
+ (let* ((current (magit-get-current-branch))
+ (local (magit-list-local-branch-names))
+ (remote (--filter (and (string-match "[^/]+/" it)
+ (not (member (substring it (match-end 0))
+ (cons "HEAD" local))))
+ (magit-list-remote-branch-names)))
+ (choices (nconc (delete current local) remote))
+ (atpoint (magit-branch-at-point))
+ (choice (magit-completing-read
+ "Checkout branch" choices
+ nil nil nil 'magit-revision-history
+ (or (car (member atpoint choices))
+ (and atpoint
+ (car (member (and (string-match "[^/]+/" atpoint)
+ (substring atpoint (match-end 0)))
+ choices)))))))
+ (cond ((member choice remote)
+ (list (and (string-match "[^/]+/" choice)
+ (substring choice (match-end 0)))
+ choice))
+ ((member choice local)
+ (list choice))
+ (t
+ (list choice (magit-read-starting-point "Create" choice))))))
+ (if (not start-point)
+ (magit-checkout branch (magit-branch-arguments))
+ (when (magit-anything-modified-p t)
+ (user-error "Cannot checkout when there are uncommitted changes"))
+ (let ((magit-inhibit-refresh t))
+ (magit-branch-and-checkout branch start-point))
+ (when (magit-remote-branch-p start-point)
+ (pcase-let ((`(,remote . ,remote-branch)
+ (magit-split-branch-name start-point)))
+ (when (and (equal branch remote-branch)
+ (not (equal remote (magit-get "remote.pushDefault"))))
+ (magit-set remote "branch" branch "pushRemote"))))
+ (magit-refresh)))
+
+(defun magit-branch-maybe-adjust-upstream (branch start-point)
+ (--when-let
+ (or (and (magit-get-upstream-branch branch)
+ (magit-get-indirect-upstream-branch start-point))
+ (and (magit-remote-branch-p start-point)
+ (let ((name (cdr (magit-split-branch-name start-point))))
+ (-some (pcase-lambda (`(,upstream . ,rule))
+ (and (magit-branch-p upstream)
+ (if (listp rule)
+ (not (member name rule))
+ (string-match-p rule name))
+ upstream))
+ magit-branch-adjust-remote-upstream-alist))))
+ (magit-call-git "branch" (concat "--set-upstream-to=" it) branch)))
+
+;;;###autoload
+(defun magit-branch-orphan (branch start-point)
+ "Create and checkout an orphan BRANCH with contents from revision START-POINT."
+ (interactive (magit-branch-read-args "Create and checkout orphan branch"))
+ (magit-run-git "checkout" "--orphan" branch start-point))
+
+(defun magit-branch-read-args (prompt &optional default-start)
+ (if magit-branch-read-upstream-first
+ (let ((choice (magit-read-starting-point prompt nil default-start)))
+ (if (magit-rev-verify choice)
+ (list (magit-read-string-ns
+ (if magit-completing-read--silent-default
+ (format "%s (starting at `%s')" prompt choice)
+ "Name for new branch")
+ (let ((def (mapconcat #'identity
+ (cdr (split-string choice "/"))
+ "/")))
+ (and (member choice (magit-list-remote-branch-names))
+ (not (member def (magit-list-local-branch-names)))
+ def)))
+ choice)
+ (if (eq magit-branch-read-upstream-first 'fallback)
+ (list choice
+ (magit-read-starting-point prompt choice default-start))
+ (user-error "Not a valid starting-point: %s" choice))))
+ (let ((branch (magit-read-string-ns (concat prompt " named"))))
+ (list branch (magit-read-starting-point prompt branch default-start)))))
+
+;;;###autoload
+(defun magit-branch-spinout (branch &optional from)
+ "Create new branch from the unpushed commits.
+Like `magit-branch-spinoff' but remain on the current branch.
+If there are any uncommitted changes, then behave exactly like
+`magit-branch-spinoff'."
+ (interactive (list (magit-read-string-ns "Spin out branch")
+ (car (last (magit-region-values 'commit)))))
+ (magit--branch-spinoff branch from nil))
+
+;;;###autoload
+(defun magit-branch-spinoff (branch &optional from)
+ "Create new branch from the unpushed commits.
+
+Create and checkout a new branch starting at and tracking the
+current branch. That branch in turn is reset to the last commit
+it shares with its upstream. If the current branch has no
+upstream or no unpushed commits, then the new branch is created
+anyway and the previously current branch is not touched.
+
+This is useful to create a feature branch after work has already
+began on the old branch (likely but not necessarily \"master\").
+
+If the current branch is a member of the value of option
+`magit-branch-prefer-remote-upstream' (which see), then the
+current branch will be used as the starting point as usual, but
+the upstream of the starting-point may be used as the upstream
+of the new branch, instead of the starting-point itself.
+
+If optional FROM is non-nil, then the source branch is reset
+to `FROM~', instead of to the last commit it shares with its
+upstream. Interactively, FROM is only ever non-nil, if the
+region selects some commits, and among those commits, FROM is
+the commit that is the fewest commits ahead of the source
+branch.
+
+The commit at the other end of the selection actually does not
+matter, all commits between FROM and `HEAD' are moved to the new
+branch. If FROM is not reachable from `HEAD' or is reachable
+from the source branch's upstream, then an error is raised."
+ (interactive (list (magit-read-string-ns "Spin off branch")
+ (car (last (magit-region-values 'commit)))))
+ (magit--branch-spinoff branch from t))
+
+(defun magit--branch-spinoff (branch from checkout)
+ (when (magit-branch-p branch)
+ (user-error "Cannot spin off %s. It already exists" branch))
+ (when (and (not checkout)
+ (magit-anything-modified-p))
+ (message "Staying on HEAD due to uncommitted changes")
+ (setq checkout t))
+ (if-let ((current (magit-get-current-branch)))
+ (let ((tracked (magit-get-upstream-branch current))
+ base)
+ (when from
+ (unless (magit-rev-ancestor-p from current)
+ (user-error "Cannot spin off %s. %s is not reachable from %s"
+ branch from current))
+ (when (and tracked
+ (magit-rev-ancestor-p from tracked))
+ (user-error "Cannot spin off %s. %s is ancestor of upstream %s"
+ branch from tracked)))
+ (let ((magit-process-raise-error t))
+ (if checkout
+ (magit-call-git "checkout" "-b" branch current)
+ (magit-call-git "branch" branch current)))
+ (--when-let (magit-get-indirect-upstream-branch current)
+ (magit-call-git "branch" "--set-upstream-to" it branch))
+ (when (and tracked
+ (setq base
+ (if from
+ (concat from "^")
+ (magit-git-string "merge-base" current tracked)))
+ (not (magit-rev-eq base current)))
+ (if checkout
+ (magit-call-git "update-ref" "-m"
+ (format "reset: moving to %s" base)
+ (concat "refs/heads/" current) base)
+ (magit-call-git "reset" "--hard" base))))
+ (if checkout
+ (magit-call-git "checkout" "-b" branch)
+ (magit-call-git "branch" branch)))
+ (magit-refresh))
+
+;;;###autoload
+(defun magit-branch-reset (branch to &optional set-upstream)
+ "Reset a branch to the tip of another branch or any other commit.
+
+When the branch being reset is the current branch, then do a
+hard reset. If there are any uncommitted changes, then the user
+has to confirm the reset because those changes would be lost.
+
+This is useful when you have started work on a feature branch but
+realize it's all crap and want to start over.
+
+When resetting to another branch and a prefix argument is used,
+then also set the target branch as the upstream of the branch
+that is being reset."
+ (interactive
+ (let* ((atpoint (magit-local-branch-at-point))
+ (branch (magit-read-local-branch "Reset branch" atpoint)))
+ (list branch
+ (magit-completing-read (format "Reset %s to" branch)
+ (delete branch (magit-list-branch-names))
+ nil nil nil 'magit-revision-history
+ (or (and (not (equal branch atpoint)) atpoint)
+ (magit-get-upstream-branch branch)))
+ current-prefix-arg)))
+ (let ((magit-inhibit-refresh t))
+ (if (equal branch (magit-get-current-branch))
+ (if (and (magit-anything-modified-p)
+ (not (yes-or-no-p
+ "Uncommitted changes will be lost. Proceed? ")))
+ (user-error "Abort")
+ (magit-reset-hard to))
+ (magit-call-git "update-ref"
+ "-m" (format "reset: moving to %s" to)
+ (magit-git-string "rev-parse" "--symbolic-full-name"
+ branch)
+ to))
+ (when (and set-upstream (magit-branch-p to))
+ (magit-set-upstream-branch branch to)
+ (magit-branch-maybe-adjust-upstream branch to)))
+ (magit-refresh))
+
+(defvar magit-branch-delete-never-verify nil
+ "Whether `magit-branch-delete' always pushes with \"--no-verify\".")
+
+;;;###autoload
+(defun magit-branch-delete (branches &optional force)
+ "Delete one or multiple branches.
+If the region marks multiple branches, then offer to delete
+those, otherwise prompt for a single branch to be deleted,
+defaulting to the branch at point."
+ ;; One would expect this to be a command as simple as, for example,
+ ;; `magit-branch-rename'; but it turns out everyone wants to squeeze
+ ;; a bit of extra functionality into this one, including myself.
+ (interactive
+ (let ((branches (magit-region-values 'branch t))
+ (force current-prefix-arg))
+ (if (length> branches 1)
+ (magit-confirm t nil "Delete %i branches" nil branches)
+ (setq branches
+ (list (magit-read-branch-prefer-other
+ (if force "Force delete branch" "Delete branch")))))
+ (unless force
+ (when-let ((unmerged (-remove #'magit-branch-merged-p branches)))
+ (if (magit-confirm 'delete-unmerged-branch
+ "Delete unmerged branch %s"
+ "Delete %i unmerged branches"
+ 'noabort unmerged)
+ (setq force branches)
+ (or (setq branches (-difference branches unmerged))
+ (user-error "Abort")))))
+ (list branches force)))
+ (let* ((refs (mapcar #'magit-ref-fullname branches))
+ (ambiguous (--remove it refs)))
+ (when ambiguous
+ (user-error
+ "%s ambiguous. Please cleanup using git directly."
+ (let ((len (length ambiguous)))
+ (cond
+ ((= len 1)
+ (format "%s is" (-first #'magit-ref-ambiguous-p branches)))
+ ((= len (length refs))
+ (format "These %s names are" len))
+ (t
+ (format "%s of these names are" len))))))
+ (cond
+ ((string-match "^refs/remotes/\\([^/]+\\)" (car refs))
+ (let* ((remote (match-string 1 (car refs)))
+ (offset (1+ (length remote))))
+ (cond
+ ((magit-confirm 'delete-branch-on-remote
+ "Delete %s on the remote (not just locally)"
+ "Delete %i branches on the remote (not just locally)"
+ 'noabort branches)
+ ;; The ref may actually point at another rev on the remote,
+ ;; but this is better than nothing.
+ (dolist (ref refs)
+ (message "Delete %s (was %s)" ref
+ (magit-rev-parse "--short" ref)))
+ ;; Assume the branches actually still exist on the remote.
+ (magit-run-git-async
+ "push"
+ (and (or force magit-branch-delete-never-verify) "--no-verify")
+ remote
+ (--map (concat ":" (substring it offset)) branches))
+ ;; If that is not the case, then this deletes the tracking branches.
+ (set-process-sentinel
+ magit-this-process
+ (apply-partially #'magit-delete-remote-branch-sentinel remote refs)))
+ (t
+ (dolist (ref refs)
+ (message "Delete %s (was %s)" ref
+ (magit-rev-parse "--short" ref))
+ (magit-call-git "update-ref" "-d" ref))
+ (magit-refresh)))))
+ ((length> branches 1)
+ (setq branches (delete (magit-get-current-branch) branches))
+ (mapc #'magit-branch-maybe-delete-pr-remote branches)
+ (mapc #'magit-branch-unset-pushRemote branches)
+ (magit-run-git "branch" (if force "-D" "-d") branches))
+ (t ; And now for something completely different.
+ (let* ((branch (car branches))
+ (prompt (format "Branch %s is checked out. " branch))
+ (target (magit-get-upstream-branch)))
+ (when (equal branch (magit-get-current-branch))
+ (when (or (equal branch target)
+ (not target))
+ (setq target (magit-main-branch)))
+ (pcase (if (or (equal branch target)
+ (not target))
+ (magit-read-char-case prompt nil
+ (?d "[d]etach HEAD & delete" 'detach)
+ (?a "[a]bort" 'abort))
+ (magit-read-char-case prompt nil
+ (?d "[d]etach HEAD & delete" 'detach)
+ (?c (format "[c]heckout %s & delete" target) 'target)
+ (?a "[a]bort" 'abort)))
+ (`detach (unless (or (equal force '(4))
+ (member branch force)
+ (magit-branch-merged-p branch t))
+ (magit-confirm 'delete-unmerged-branch
+ "Delete unmerged branch %s" ""
+ nil (list branch)))
+ (magit-call-git "checkout" "--detach"))
+ (`target (unless (or (equal force '(4))
+ (member branch force)
+ (magit-branch-merged-p branch target))
+ (magit-confirm 'delete-unmerged-branch
+ "Delete unmerged branch %s" ""
+ nil (list branch)))
+ (magit-call-git "checkout" target))
+ (`abort (user-error "Abort")))
+ (setq force t))
+ (magit-branch-maybe-delete-pr-remote branch)
+ (magit-branch-unset-pushRemote branch)
+ (magit-run-git "branch" (if force "-D" "-d") branch))))))
+
+(put 'magit-branch-delete 'interactive-only t)
+
+(defun magit-branch-maybe-delete-pr-remote (branch)
+ (when-let ((remote (magit-get "branch" branch "pullRequestRemote")))
+ (let* ((variable (format "remote.%s.fetch" remote))
+ (refspecs (magit-get-all variable)))
+ (unless (member (format "+refs/heads/*:refs/remotes/%s/*" remote)
+ refspecs)
+ (let ((refspec
+ (if (equal (magit-get "branch" branch "pushRemote") remote)
+ (format "+refs/heads/%s:refs/remotes/%s/%s"
+ branch remote branch)
+ (let ((merge (magit-get "branch" branch "merge")))
+ (and merge
+ (string-prefix-p "refs/heads/" merge)
+ (setq merge (substring merge 11))
+ (format "+refs/heads/%s:refs/remotes/%s/%s"
+ merge remote merge))))))
+ (when (member refspec refspecs)
+ (if (and (length= refspecs 1)
+ (magit-confirm 'delete-pr-remote
+ (format "Also delete remote %s (%s)" remote
+ "no pull-request branch remains")
+ nil t))
+ (magit-call-git "remote" "rm" remote)
+ (magit-call-git "config" "--unset-all" variable
+ (format "^%s$" (regexp-quote refspec))))))))))
+
+(defun magit-branch-unset-pushRemote (branch)
+ (magit-set nil "branch" branch "pushRemote"))
+
+(defun magit-delete-remote-branch-sentinel (remote refs process event)
+ (when (memq (process-status process) '(exit signal))
+ (if (= (process-exit-status process) 1)
+ (if-let ((on-remote (--map (concat "refs/remotes/" remote "/" it)
+ (magit-remote-list-branches remote)))
+ (rest (--filter (and (not (member it on-remote))
+ (magit-ref-exists-p it))
+ refs)))
+ (progn
+ (process-put process 'inhibit-refresh t)
+ (magit-process-sentinel process event)
+ (setq magit-this-error nil)
+ (message "Some remote branches no longer exist. %s"
+ "Deleting just the local tracking refs instead...")
+ (dolist (ref rest)
+ (magit-call-git "update-ref" "-d" ref))
+ (magit-refresh)
+ (message "Deleting local remote-tracking refs...done"))
+ (magit-process-sentinel process event))
+ (magit-process-sentinel process event))))
+
+;;;###autoload
+(defun magit-branch-rename (old new &optional force)
+ "Rename the branch named OLD to NEW.
+
+With a prefix argument FORCE, rename even if a branch named NEW
+already exists.
+
+If `branch.OLD.pushRemote' is set, then unset it. Depending on
+the value of `magit-branch-rename-push-target' (which see) maybe
+set `branch.NEW.pushRemote' and maybe rename the push-target on
+the remote."
+ (interactive
+ (let ((branch (magit-read-local-branch "Rename branch")))
+ (list branch
+ (magit-read-string-ns (format "Rename branch '%s' to" branch)
+ nil 'magit-revision-history)
+ current-prefix-arg)))
+ (when (string-match "\\`heads/\\(.+\\)" old)
+ (setq old (match-string 1 old)))
+ (when (equal old new)
+ (user-error "Old and new branch names are the same"))
+ (magit-call-git "branch" (if force "-M" "-m") old new)
+ (when magit-branch-rename-push-target
+ (let ((remote (magit-get-push-remote old))
+ (old-specified (magit-get "branch" old "pushRemote"))
+ (new-specified (magit-get "branch" new "pushRemote")))
+ (when (and old-specified (or force (not new-specified)))
+ ;; Keep the target setting branch specified, even if that is
+ ;; redundant. But if a branch by the same name existed before
+ ;; and the rename isn't forced, then do not change a leftover
+ ;; setting. Such a leftover setting may or may not conform to
+ ;; what we expect here...
+ (magit-set old-specified "branch" new "pushRemote"))
+ (when (and (equal (magit-get-push-remote new) remote)
+ ;; ...and if it does not, then we must abort.
+ (not (eq magit-branch-rename-push-target 'local-only))
+ (or (not (memq magit-branch-rename-push-target
+ '(forge-only github-only)))
+ (and (require (quote forge) nil t)
+ (fboundp 'forge--forge-remote-p)
+ (forge--forge-remote-p remote))))
+ (let ((old-target (magit-get-push-branch old t))
+ (new-target (magit-get-push-branch new t))
+ (remote (magit-get-push-remote new)))
+ (when (and old-target
+ (not new-target)
+ (magit-y-or-n-p (format "Also rename %S to %S on \"%s\""
+ old new remote)))
+ ;; Rename on (i.e. within) the remote, but only if the
+ ;; destination ref doesn't exist yet. If that ref already
+ ;; exists, then it probably is of some value and we better
+ ;; not touch it. Ignore what the local ref points at,
+ ;; i.e. if the local and the remote ref didn't point at
+ ;; the same commit before the rename then keep it that way.
+ (magit-call-git "push" "-v" remote
+ (format "%s:refs/heads/%s" old-target new)
+ (format ":refs/heads/%s" old)))))))
+ (magit-branch-unset-pushRemote old)
+ (magit-refresh))
+
+;;;###autoload
+(defun magit-branch-shelve (branch)
+ "Shelve a BRANCH.
+Rename \"refs/heads/BRANCH\" to \"refs/shelved/BRANCH\",
+and also rename the respective reflog file."
+ (interactive (list (magit-read-other-local-branch "Shelve branch")))
+ (let ((old (concat "refs/heads/" branch))
+ (new (concat "refs/shelved/" branch)))
+ (magit-git "update-ref" new old "")
+ (magit--rename-reflog-file old new)
+ (magit-branch-unset-pushRemote branch)
+ (magit-run-git "branch" "-D" branch)))
+
+;;;###autoload
+(defun magit-branch-unshelve (branch)
+ "Unshelve a BRANCH
+Rename \"refs/shelved/BRANCH\" to \"refs/heads/BRANCH\",
+and also rename the respective reflog file."
+ (interactive
+ (list (magit-completing-read
+ "Unshelve branch"
+ (--map (substring it 8)
+ (magit-list-refnames "refs/shelved"))
+ nil t)))
+ (let ((old (concat "refs/shelved/" branch))
+ (new (concat "refs/heads/" branch)))
+ (magit-git "update-ref" new old "")
+ (magit--rename-reflog-file old new)
+ (magit-run-git "update-ref" "-d" old)))
+
+(defun magit--rename-reflog-file (old new)
+ (let ((old (magit-git-dir (concat "logs/" old)))
+ (new (magit-git-dir (concat "logs/" new))))
+ (when (file-exists-p old)
+ (make-directory (file-name-directory new) t)
+ (rename-file old new t))))
+
+;;; Configure
+
+;;;###autoload (autoload 'magit-branch-configure "magit-branch" nil t)
+(transient-define-prefix magit-branch-configure (branch)
+ "Configure a branch."
+ :man-page "git-branch"
+ [:description
+ (lambda ()
+ (concat
+ (propertize "Configure " 'face 'transient-heading)
+ (propertize (oref transient--prefix scope) 'face 'magit-branch-local)))
+ ("d" magit-branch.<branch>.description)
+ ("u" magit-branch.<branch>.merge/remote)
+ ("r" magit-branch.<branch>.rebase)
+ ("p" magit-branch.<branch>.pushRemote)]
+ ["Configure repository defaults"
+ ("R" magit-pull.rebase)
+ ("P" magit-remote.pushDefault)]
+ ["Configure branch creation"
+ ("a m" magit-branch.autoSetupMerge)
+ ("a r" magit-branch.autoSetupRebase)]
+ (interactive
+ (list (or (and (not current-prefix-arg)
+ (not (and magit-branch-direct-configure
+ (eq transient-current-command 'magit-branch)))
+ (magit-get-current-branch))
+ (magit--read-branch-scope))))
+ (transient-setup 'magit-branch-configure nil nil :scope branch))
+
+(defun magit--read-branch-scope (&optional obj)
+ (magit-read-local-branch
+ (if obj
+ (format "Set %s for branch"
+ (format (oref obj variable) "<name>"))
+ "Configure branch")))
+
+(transient-define-suffix magit-branch.<branch>.description (branch)
+ "Edit the description of BRANCH."
+ :class 'magit--git-variable
+ :transient nil
+ :variable "branch.%s.description"
+ (interactive (list (oref transient-current-prefix scope)))
+ (magit-run-git-with-editor "branch" "--edit-description" branch))
+
+(add-hook 'find-file-hook #'magit-branch-description-check-buffers)
+
+(defun magit-branch-description-check-buffers ()
+ (and buffer-file-name
+ (string-match-p "/\\(BRANCH\\|EDIT\\)_DESCRIPTION\\'" buffer-file-name)))
+
+(defclass magit--git-branch:upstream (magit--git-variable)
+ ((format :initform " %k %m %M\n %r %R")))
+
+(transient-define-infix magit-branch.<branch>.merge/remote ()
+ :class 'magit--git-branch:upstream)
+
+(cl-defmethod transient-init-value ((obj magit--git-branch:upstream))
+ (when-let* ((branch (oref transient--prefix scope))
+ (remote (magit-get "branch" branch "remote"))
+ (merge (magit-get "branch" branch "merge")))
+ (oset obj value (list remote merge))))
+
+(cl-defmethod transient-infix-read ((obj magit--git-branch:upstream))
+ (if (oref obj value)
+ (oset obj value nil)
+ (magit-read-upstream-branch (oref transient--prefix scope) "Upstream")))
+
+(cl-defmethod transient-infix-set ((obj magit--git-branch:upstream) refname)
+ (magit-set-upstream-branch (oref transient--prefix scope) refname)
+ (oset obj value
+ (and-let* ((branch (oref transient--prefix scope))
+ (r (magit-get "branch" branch "remote"))
+ (m (magit-get "branch" branch "merge")))
+ (list r m)))
+ (magit-refresh))
+
+(cl-defmethod transient-format ((obj magit--git-branch:upstream))
+ (let ((branch (oref transient--prefix scope)))
+ (format-spec
+ (oref obj format)
+ `((?k . ,(transient-format-key obj))
+ (?r . ,(format "branch.%s.remote" branch))
+ (?m . ,(format "branch.%s.merge" branch))
+ (?R . ,(transient-format-value obj #'car))
+ (?M . ,(transient-format-value obj #'cadr))))))
+
+(cl-defmethod transient-format-value ((obj magit--git-branch:upstream) key)
+ (if-let ((value (funcall key (oref obj value))))
+ (propertize value 'face 'transient-argument)
+ (propertize "unset" 'face 'transient-inactive-argument)))
+
+(transient-define-infix magit-branch.<branch>.rebase ()
+ :class 'magit--git-variable:choices
+ :scope #'magit--read-branch-scope
+ :variable "branch.%s.rebase"
+ :fallback "pull.rebase"
+ :choices '("true" "false")
+ :default "false")
+
+(transient-define-infix magit-branch.<branch>.pushRemote ()
+ :class 'magit--git-variable:choices
+ :scope #'magit--read-branch-scope
+ :variable "branch.%s.pushRemote"
+ :fallback "remote.pushDefault"
+ :choices #'magit-list-remotes)
+
+(transient-define-infix magit-pull.rebase ()
+ :class 'magit--git-variable:choices
+ :variable "pull.rebase"
+ :choices '("true" "false")
+ :default "false")
+
+(transient-define-infix magit-remote.pushDefault ()
+ :class 'magit--git-variable:choices
+ :variable "remote.pushDefault"
+ :choices #'magit-list-remotes)
+
+(transient-define-infix magit-branch.autoSetupMerge ()
+ :class 'magit--git-variable:choices
+ :variable "branch.autoSetupMerge"
+ :choices '("always" "true" "false")
+ :default "true")
+
+(transient-define-infix magit-branch.autoSetupRebase ()
+ :class 'magit--git-variable:choices
+ :variable "branch.autoSetupRebase"
+ :choices '("always" "local" "remote" "never")
+ :default "never")
+
+;;; _
+(provide 'magit-branch)
+;;; magit-branch.el ends here