# 1) Copy this file to somewhere (e.g. ~/.git-prompt.sh).
# 2) Add the following line to your .bashrc/.zshrc:
# source ~/.git-prompt.sh
-# 3) Change your PS1 to also show the current branch:
-# Bash: PS1='[\u@\h \W$(__git_ps1 " (%s)")]\$ '
-# ZSH: PS1='[%n@%m %c$(__git_ps1 " (%s)")]\$ '
+# 3a) Change your PS1 to call __git_ps1 as
+# command-substitution:
+# Bash: PS1='[\u@\h \W$(__git_ps1 " (%s)")]\$ '
+# ZSH: PS1='[%n@%m %c$(__git_ps1 " (%s)")]\$ '
+# the optional argument will be used as format string.
+# 3b) Alternatively, if you are using bash, __git_ps1 can be
+# used for PROMPT_COMMAND with two parameters, <pre> and
+# <post>, which are strings you would put in $PS1 before
+# and after the status string generated by the git-prompt
+# machinery. e.g.
+# PROMPT_COMMAND='__git_ps1 "\u@\h:\w" "\\\$ "'
+# will show username, at-sign, host, colon, cwd, then
+# various status string, followed by dollar and SP, as
+# your prompt.
#
# The argument to __git_ps1 will be displayed only if you are currently
# in a git repository. The %s token will be the name of the current
# find one, or @{upstream} otherwise. Once you have set
# GIT_PS1_SHOWUPSTREAM, you can override it on a per-repository basis by
# setting the bash.showUpstream config variable.
+#
+# If you would like to see more information about the identity of
+# commits checked out as a detached HEAD, set GIT_PS1_DESCRIBE_STYLE
+# to one of these values:
+#
+# contains relative to newer annotated tag (v1.6.3.2~35)
+# branch relative to newer tag or branch (master~4)
+# describe relative to older annotated tag (v1.6.3.1-13-gdd42c2f)
+# default exactly matching tag
+#
+# If you would like a colored hint about the current dirty state, set
+# GIT_PS1_SHOWCOLORHINTS to a nonempty value. The colors are based on
+# the colored output of "git status -sb".
# __gitdir accepts 0 or 1 arguments (i.e., location)
# returns location of .git repo
# __git_ps1 accepts 0 or 1 arguments (i.e., format string)
-# returns text to add to bash PS1 prompt (includes branch name)
+# when called from PS1 using command substitution
+# in this mode it prints text to add to bash PS1 prompt (includes branch name)
+#
+# __git_ps1 requires 2 arguments when called from PROMPT_COMMAND (pc)
+# in that case it _sets_ PS1. The arguments are parts of a PS1 string.
+# when both arguments are given, the first is prepended and the second appended
+# to the state string when assigned to PS1.
+# In this mode you can request colored hints using GIT_PS1_SHOWCOLORHINTS=true
__git_ps1 ()
{
+ local pcmode=no
+ local detached=no
+ local ps1pc_start='\u@\h:\w '
+ local ps1pc_end='\$ '
+ local printf_format=' (%s)'
+
+ case "$#" in
+ 2) pcmode=yes
+ ps1pc_start="$1"
+ ps1pc_end="$2"
+ ;;
+ 0|1) printf_format="${1:-$printf_format}"
+ ;;
+ *) return
+ ;;
+ esac
+
local g="$(__gitdir)"
- if [ -n "$g" ]; then
+ if [ -z "$g" ]; then
+ if [ $pcmode = yes ]; then
+ #In PC mode PS1 always needs to be set
+ PS1="$ps1pc_start$ps1pc_end"
+ fi
+ else
local r=""
local b=""
if [ -f "$g/rebase-merge/interactive" ]; then
fi
b="$(git symbolic-ref HEAD 2>/dev/null)" || {
-
+ detached=yes
b="$(
case "${GIT_PS1_DESCRIBE_STYLE-}" in
(contains)
fi
local f="$w$i$s$u"
- printf -- "${1:- (%s)}" "$c${b##refs/heads/}${f:+ $f}$r$p"
+ if [ $pcmode = yes ]; then
+ if [ -n "${GIT_PS1_SHOWCOLORHINTS-}" ]; then
+ local c_red='\e[31m'
+ local c_green='\e[32m'
+ local c_lblue='\e[1;34m'
+ local c_clear='\e[0m'
+ local bad_color=$c_red
+ local ok_color=$c_green
+ local branch_color="$c_clear"
+ local flags_color="$c_lblue"
+ local branchstring="$c${b##refs/heads/}"
+
+ if [ $detached = no ]; then
+ branch_color="$ok_color"
+ else
+ branch_color="$bad_color"
+ fi
+
+ # Setting PS1 directly with \[ and \] around colors
+ # is necessary to prevent wrapping issues!
+ PS1="$ps1pc_start (\[$branch_color\]$branchstring\[$c_clear\]"
+
+ if [ -n "$w$i$s$u$r$p" ]; then
+ PS1="$PS1 "
+ fi
+ if [ "$w" = "*" ]; then
+ PS1="$PS1\[$bad_color\]$w"
+ fi
+ if [ -n "$i" ]; then
+ PS1="$PS1\[$ok_color\]$i"
+ fi
+ if [ -n "$s" ]; then
+ PS1="$PS1\[$flags_color\]$s"
+ fi
+ if [ -n "$u" ]; then
+ PS1="$PS1\[$bad_color\]$u"
+ fi
+ PS1="$PS1\[$c_clear\]$r$p)$ps1pc_end"
+ else
+ PS1="$ps1pc_start ($c${b##refs/heads/}${f:+ $f}$r$p)$ps1pc_end"
+ fi
+ else
+ # NO color option unless in PROMPT_COMMAND mode
+ printf -- "$printf_format" "$c${b##refs/heads/}${f:+ $f}$r$p"
+ fi
fi
}