.. _cmd-fish_git_prompt:

fish_git_prompt - output git information for use in a prompt
============================================================

Description
-----------

The fish_git_prompt function can be used to display information about the current git repository, if any.

For obvious reasons, it requires having git installed.

There are numerous configuration options, either as fish variables or git config variables. If a git config variable is supported, it will be used if set, and the fish variable will only be used if it isn't.

- ``$__fish_git_prompt_show_informative_status`` or the git config option "bash.showInformativeStatus" can be set to enable the "informative" display, which will show a large amount of information - the number of untracked files, dirty files, unpushed/unpulled commits, etc... In large repositories, this can take a lot of time, so it is recommended to disable it there, via ``git config bash.showInformativeStatus false``.

- ``$__fish_git_prompt_showdirtystate`` or the git config option "bash.showDirtyState" can be set to show if the repository is "dirty", i.e. has uncommitted changes.

- ``$__fish_git_prompt_showuntrackedfiles`` or the git config option "bash.showUntrackedFiles" can be set to show if the repository has untracked files (that aren't ignored).

- ``$__fish_git_prompt_showupstream`` can be set to a number of values to determine how changes between HEAD and upstream are shown:

     verbose        show number of commits ahead/behind (+/-) upstream
     name           if verbose, then also show the upstream abbrev name
     informative    similar to verbose, but shows nothing when equal - this is the default if show_informative_status is set.
     git            always compare HEAD to @{upstream}
     svn            always compare HEAD to your SVN upstream
     none           disables (useful with show_informative_status)

- ``$__fish_git_prompt_showstashstate`` can be set to display the state of the stash.

- ``$__fish_git_prompt_shorten_branch_len`` can be set to the number of characters that the branch name will be shortened to.

- ``$__fish_git_prompt_describe_style`` can be set to a number of styles that describe the current HEAD:

     contains
     branch
     describe
     default

- ``$__fish_git_prompt_showcolorhints`` can be set to enable coloring for certain things.

A number of variables set characters and color used to indicate things. Many of these have a different default if used with informative status enabled. The normal default is given first, then the informative default if it is different. If no default for the colors is given, they default to ``$__fish_git_prompt_color``.

- ``$__fish_git_prompt_char_stateseparator`` (' ', `|`)
- ``$__fish_git_prompt_color`` ('')
- ``$__fish_git_prompt_color_prefix``
- ``$__fish_git_prompt_color_suffix``
- ``$__fish_git_prompt_color_bare``
- ``$__fish_git_prompt_color_merging``

Some variables are only used in some modes, like when informative status is enabled (by setting ``$__fish_git_prompt_show_informative_status``):

- ``$__fish_git_prompt_char_cleanstate`` (✔)
- ``$__fish_git_prompt_color_cleanstate``

Variables used with showdirtystate:

- ``$__fish_git_prompt_char_dirtystate`` (`*`, ✚)
- ``$__fish_git_prompt_char_invalidstate`` (#, ✖)
- ``$__fish_git_prompt_char_stagedstate`` (+, ●)
- ``$__fish_git_prompt_color_dirtystate`` (red with showcolorhints, same as color_flags otherwise)
- ``$__fish_git_prompt_color_invalidstate``
- ``$__fish_git_prompt_color_stagedstate`` (green with showcolorhints, color_flags otherwise)

Variables used with showstashstate:

- ``$__fish_git_prompt_char_stashstate`` (``$``, ⚑)
- ``$__fish_git_prompt_color_stashstate`` (same as color_flags)

Variables used with showuntrackedfiles:

- ``$__fish_git_prompt_char_untrackedfiles`` (%, …)
- ``$__fish_git_prompt_color_untrackedfiles`` (same as color_flags)

Variables used with showupstream (also implied by informative status):

- ``$__fish_git_prompt_char_upstream_ahead`` (>, ↑)
- ``$__fish_git_prompt_char_upstream_behind`` (<, ↓)
- ``$__fish_git_prompt_char_upstream_diverged`` (<>)
- ``$__fish_git_prompt_char_upstream_equal`` (=)
- ``$__fish_git_prompt_char_upstream_prefix`` ('')
- ``$__fish_git_prompt_color_upstream``

Colors used with showcolorhints:

- ``$__fish_git_prompt_color_branch`` (green)
- ``$__fish_git_prompt_color_branch_detached`` (red)
- ``$__fish_git_prompt_color_flags`` (--bold blue)

Note that all colors can also have a corresponding "_done" color. E.g. ``$__fish_git_prompt_color_upstream_done``, used right _after_ the upstream.

See also fish_vcs_prompt, which will call all supported vcs-prompt functions, including git, hg and svn.

Example
--------

A simple prompt that displays git info::

    function fish_prompt
        # ...
        set -g __fish_git_prompt_showupstream auto
        printf '%s %s$' $PWD (fish_git_prompt)
    end