spacemacs/layers/+source-control/git/README.org

Git layer

• Description
  • Features:
• Install
  • Layer
  • Magit status fullscreen
  • Magit auto-complete
  • Magit SVN plugin
  • Global git commit mode
  • Git
  • Git-Flow
  • Org integration
• Working with Git
  • Magit
  • Staging lines
  • Commit message editing buffer
  • Log selection buffer
  • Interactive rebase buffer
  • Quick guide for recurring use cases in Magit
  • Git-Flow
  • Git time machine
  • Git links to web services
  • Repository list

Description

This layers adds extensive support for git to Spacemacs.

Features:

• git repository management the indispensable magit package
• git-flow add-on for magit.
• quick in buffer history browsing with git-timemachine.
• quick in buffer last commit message per line with git-messenger
• colorize buffer line by age of commit with smeargle
• git grep with helm-git-grep
• gitignore generator with helm-gitignore
• org integration with magit via orgit

New to Magit? Checkout the official intro.

Install

Layer

To use this configuration layer, add it to your ~/.spacemacs. You will need to add git to the existing dotspacemacs-configuration-layers list in this file.

Magit status fullscreen

To display the magit status buffer in fullscreen set the variable git-magit-status-fullscreen to t in your dotspacemacs/user-init function.

  (defun dotspacemacs/user-init ()
    (setq-default git-magit-status-fullscreen t))

Magit auto-complete

Magit auto-complete feature is enabled by default. For this feature to work best - setup magit repository list.

Magit SVN plugin

The magit SVN plugin shows commits which were not pushed to svn yet. Press ! in Magit buffer to open the magit-svn-popup. There you can push to or rebase from svn.

For convenience the magit SVN plugin can be activated directly in the Git layer by setting the variable git-enable-magit-svn-plugin to t.

  (defun dotspacemacs/user-init ()
    (setq-default git-enable-magit-svn-plugin t))

Key binding	Description
~	open magit-svn-popup

Global git commit mode

Spacemacs can be used as the $EDITOR (or $GIT_EDITOR) for editing git commits messages. To enable this you have to add the following line to your dotspacemacs/user-config:

  (global-git-commit-mode t)

Git

Of course if your OS does not ship with git (!) you'll have to install it on your machine. You can download it from the download page.

Git-Flow

Git-flow is a standardized branching pattern for git repositories with the aim of making things more manageable. While there are tools to assist with making this easier, these do nothing you couldn't do manually.

Support requires installation of the git-flow extensions. Please reference their installation page for assistance.

Org integration

See the commentary section of the package here.

Working with Git

Git commands (start with g):

Key binding	Description
SPC g /	open helm-git-grep
SPC g *	open helm-git-grep-at-point
SPC g b	open a magit blame
SPC g f f	view a file at a specific branch or commit
SPC g f l	commits log for current file
SPC g f d	diff for current file
SPC g H c	clear highlights
SPC g H h	highlight regions by age of commits
SPC g H t	highlight regions by last updated time
SPC g i	initialize a new git repository
SPC g I	open helm-gitignore
SPC g L	open magit-repolist
SPC g s	open a magit status window
SPC g S	stage current file
SPC g m	magit dispatch popup
SPC g M	display the last commit message of the current line
SPC g t	launch the git time machine
SPC g U	unstage current file

Notes:

• Highlight by age of commit or last update time is provided by smeargle.
• Git time machine is provided by git-timemachine.
• Git last commit message per line is provided by git-messenger.

Magit

Spacemacs uses magit to manage Git repositories.

To open a status buffer, type in a buffer of a Git repository: SPC g s. The central key binding hub of Magit is available on SPC g m.

Spacemacs uses evil-magit for key bindings in magit buffers (unless your editing style is set to emacs, in which case you get the default magit bindings), which are the standard magit key bindings with some minimal changes to make them comfortable for evil users.

Here are the often used bindings inside a status buffer:

Key binding	Description
/	evil-search
$	open command output buffer
c c	open a commit message buffer
b b	checkout a branch
b c	create a branch
f f	fetch changes
F (r) u	pull tracked branch and rebase
gr	refresh
j	goto next magit section
C-j	next visual line
k	goto previous magit section
C-k	previous visual line
l l	open log buffer
n	next search occurrence
N	previous search occurrence
o	revert item at point
P u	push to tracked branch
P m	push to matching branch (e.g., upstream/develop to origin/develop)
q	quit
s	on a file or hunk in a diff: stage the file or hunk
x	discard changes
+	on a hunk: increase hunk size
=	on a hunk: decrease hunk size
S	stage all
TAB	on a file: expand/collapse diff
u	on a staged file: unstage
U	unstage all staged files
v or V	select multiple lines
z z	stash changes

Staging lines

Magit allows you to stage specific lines by selecting them in a diff and hitting s to stage. Due to inconsistencies between Vim and Emacs editing styles, if you enter visual line state with V, you will stage one more line than intended. To work around this, you can use v instead (since Magit only stages whole lines, in any case).

Commit message editing buffer

In a commit message buffer the following key bindings are active:

Key binding	Description
SPC m c or SPC m ,	commit changes with the entered message
SPC m a or SPC m k	discard message and abort the commit
g j or M-n	cycle through history to the previous commit message
g k or M-p	save current commit message and cycle to the next message

In addition, regular commands for saving and killing a buffer such as :wq and ZZ can be used to commit changes.

Log selection buffer

A log selection buffer is presented as an interactive way of selecting a recent commit that is reachable from HEAD. such as when selecting the beginning of a rebase and when selecting a commit to be squashed into.

Key binding	Description
SPC m c or SPC m ,	select the commit at point and act on it
SPC m a or SPC m k	abort selecting and don't act on any commit

Interactive rebase buffer

Key binding	Description
c or p	pick
e	edit
f	fixup
j	go down
M-j	move line down
k	go up
M-k	move line up
d or x	kill line
r	reword
s	squash
u	undo
y	insert
!	execute

Quick guide for recurring use cases in Magit

• Amend a commit:

  • l l to open log buffer
  • c a on the commit you want to amend
  • ​,​c or C-c C-c to submit the changes

• Squash last commit:

  • l l to open log buffer
  • r e on the second to last commit, it opens the rebase buffer
  • j to put point on last commit
  • s to squash it
  • ​,​c or C-c C-c to continue to the commit message buffer
  • ​,​c or C-c C-c again when you have finished to edit the commit message

• Force push a squashed commit:

  • in the status buffer you should see the new commit unpushed and the old commit unpulled
  • P -f P for force a push (beware usually it is not recommended to rewrite the history of a public repository, but if you are sure that you are the only one to work on a repository it is ok - i.e. in your fork).

• Add upstream remote (the parent repository you have forked):

  • M to open the remote popup
  • a to add a remote, type the name (i.e. upstream) and the URL

• Pull changes from upstream (the parent repository you have forked) and push:

  • F -r C-u F and choose upstream or the name you gave to it
  • P P to push the commit to origin

Git-Flow

magit-gitflow provides git-flow commands in its own magit menu.

Key binding	Description
%	open magit-gitflow menu

Git time machine

git-timemachine allows to quickly browse the commits of the current buffer.

Key binding	Description
SPC g t	start git timemachine and initiate transient-state
c	show current commit
n	show next commit
N	show previous commit
p	show previous commit
q	leave transient-state and git timemachine
Y	copy current commit hash

Git links to web services

These key bindings allow to quickly construct URLs pointing to a given commit or lines in a file hosted on Git web services like GitHub, GitLab, Bitbucket…

Key binding	Description
SPC g l c	on a commit hash, browse to the current file at this commit
SPC g l C	on a commit hash, create link to the file at this commit and copy it
SPC g l l	on a region, browse to file at current lines position
SPC g l L	on a region, create a link to the file highlighting the selected lines

Notes:

• You can use the universal argument SPC u to select a remote repository.
• When the link is opened, the URL is also copied in the kill ring, you can override this behavior by setting the variable git-link-open-in-browser to nil.

Repository list

Feature displays a status-list of git repositories. Within your .spacemacs config, in the dotspacemacs/user-config() stanza configure magit-repository-directories to target Emacs to directories to look into.

  (setq magit-repository-directories
        '(("~/Development/" . 2) ("~/src/" . 2)))

Where each element has the form (DIRECTORY . DEPTH), when DEPTH is 0 - then only add DIRECTORY itself. The DIRECTORY should end up with a / to respect Emacs conventions.

Key binding	Description
SPC g L	start git repo list
RET	show the git status window for the selected project
gr	refresh the project list

For more information, look into Magit-User-Manual#Status-Buffer