# Copyright (C) 2006,2007 Shawn O. Pearce <spearce@spearce.org>
# Distributed under the GNU General Public License, version 2.0.
#
-# This script allows you to see the current branch in your prompt.
+# This script allows you to see repository status in your prompt.
#
# To enable:
#
# 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)")]\$ '
+# ZSH: setopt PROMPT_SUBST ; 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.
+# 3b) Alternatively, for a slightly faster prompt, __git_ps1 can
+# be used for PROMPT_COMMAND in Bash or for precmd() in Zsh
+# with two parameters, <pre> and <post>, which are strings
+# you would put in $PS1 before and after the status string
+# generated by the git-prompt machinery. e.g.
+# Bash: PROMPT_COMMAND='__git_ps1 "\u@\h:\w" "\\\$ "'
+# will show username, at-sign, host, colon, cwd, then
+# various status string, followed by dollar and SP, as
+# your prompt.
+# ZSH: precmd () { __git_ps1 "%n" ":%~$ " "|%s" }
+# will show username, pipe, then various status string,
+# followed by colon, cwd, dollar and SP, as your prompt.
# Optionally, you can supply a third argument with a printf
# format string to finetune the output of the branch status
#
-# 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
-# branch.
+# The repository status will be displayed only if you are currently in a
+# git repository. The %s token is the placeholder for the shown status.
+#
+# The prompt status always includes the current branch name.
#
# In addition, if you set GIT_PS1_SHOWDIRTYSTATE to a nonempty value,
# unstaged (*) and staged (+) changes will be shown next to the branch
# of values:
#
# verbose show number of commits ahead/behind (+/-) upstream
+# name if verbose, then also show the upstream abbrev name
# legacy don't use the '--count' option available in recent
# versions of git-rev-list
# git always compare HEAD to @{upstream}
#
# 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".
+# the colored output of "git status -sb" and are available only when
+# using __git_ps1 for PROMPT_COMMAND or precmd.
+#
+# If you would like __git_ps1 to do nothing in the case when the current
+# directory is set up to be ignored by git, then set
+# GIT_PS1_HIDE_IF_PWD_IGNORED to a nonempty value. Override this on the
+# repository level by setting bash.hideIfPwdIgnored to "false".
-# __gitdir accepts 0 or 1 arguments (i.e., location)
-# returns location of .git repo
-__gitdir ()
-{
- # Note: this function is duplicated in git-completion.bash
- # When updating it, make sure you update the other one to match.
- if [ -z "${1-}" ]; then
- if [ -n "${__git_dir-}" ]; then
- echo "$__git_dir"
- elif [ -n "${GIT_DIR-}" ]; then
- test -d "${GIT_DIR-}" || return 1
- echo "$GIT_DIR"
- elif [ -d .git ]; then
- echo .git
- else
- git rev-parse --git-dir 2>/dev/null
- fi
- elif [ -d "$1/.git" ]; then
- echo "$1/.git"
- else
- echo "$1"
- fi
-}
+# check whether printf supports -v
+__git_printf_supports_v=
+printf -v __git_printf_supports_v -- '%s' yes >/dev/null 2>&1
# stores the divergence from upstream in $p
# used by GIT_PS1_SHOWUPSTREAM
{
local key value
local svn_remote svn_url_pattern count n
- local upstream=git legacy="" verbose=""
+ local upstream=git legacy="" verbose="" name=""
svn_remote=()
# get some config options from git-config
fi
;;
svn-remote.*.url)
- svn_remote[ $((${#svn_remote[@]} + 1)) ]="$value"
- svn_url_pattern+="\\|$value"
+ svn_remote[$((${#svn_remote[@]} + 1))]="$value"
+ svn_url_pattern="$svn_url_pattern\\|$value"
upstream=svn+git # default upstream is SVN if available, else git
;;
esac
git|svn) upstream="$option" ;;
verbose) verbose=1 ;;
legacy) legacy=1 ;;
+ name) name=1 ;;
esac
done
svn*)
# get the upstream from the "git-svn-id: ..." in a commit message
# (git-svn uses essentially the same procedure internally)
- local svn_upstream=($(git log --first-parent -1 \
+ local -a svn_upstream
+ svn_upstream=($(git log --first-parent -1 \
--grep="^git-svn-id: \(${svn_url_pattern#??}\)" 2>/dev/null))
if [[ 0 -ne ${#svn_upstream[@]} ]]; then
- svn_upstream=${svn_upstream[ ${#svn_upstream[@]} - 2 ]}
+ svn_upstream=${svn_upstream[${#svn_upstream[@]} - 2]}
svn_upstream=${svn_upstream%@*}
local n_stop="${#svn_remote[@]}"
for ((n=1; n <= n_stop; n++)); do
*) # diverged from upstream
p=" u+${count#* }-${count% *}" ;;
esac
+ if [[ -n "$count" && -n "$name" ]]; then
+ __git_ps1_upstream_name=$(git rev-parse \
+ --abbrev-ref "$upstream" 2>/dev/null)
+ if [ $pcmode = yes ] && [ $ps1_expanded = yes ]; then
+ p="$p \${__git_ps1_upstream_name}"
+ else
+ p="$p ${__git_ps1_upstream_name}"
+ # not needed anymore; keep user's
+ # environment clean
+ unset __git_ps1_upstream_name
+ fi
+ fi
+ fi
+
+}
+
+# Helper function that is meant to be called from __git_ps1. It
+# injects color codes into the appropriate gitstring variables used
+# to build a gitstring.
+__git_ps1_colorize_gitstring ()
+{
+ if [[ -n ${ZSH_VERSION-} ]]; then
+ local c_red='%F{red}'
+ local c_green='%F{green}'
+ local c_lblue='%F{blue}'
+ local c_clear='%f'
+ else
+ # Using \[ and \] around colors is necessary to prevent
+ # issues with command line editing/browsing/completion!
+ local c_red='\[\e[31m\]'
+ local c_green='\[\e[32m\]'
+ local c_lblue='\[\e[1;34m\]'
+ local c_clear='\[\e[0m\]'
fi
+ local bad_color=$c_red
+ local ok_color=$c_green
+ local flags_color="$c_lblue"
+ local branch_color=""
+ if [ $detached = no ]; then
+ branch_color="$ok_color"
+ else
+ branch_color="$bad_color"
+ fi
+ c="$branch_color$c"
+
+ z="$c_clear$z"
+ if [ "$w" = "*" ]; then
+ w="$bad_color$w"
+ fi
+ if [ -n "$i" ]; then
+ i="$ok_color$i"
+ fi
+ if [ -n "$s" ]; then
+ s="$flags_color$s"
+ fi
+ if [ -n "$u" ]; then
+ u="$bad_color$u"
+ fi
+ r="$c_clear$r"
}
+__git_eread ()
+{
+ local f="$1"
+ shift
+ test -r "$f" && read "$@" <"$f"
+}
# __git_ps1 accepts 0 or 1 arguments (i.e., format string)
# when called from PS1 using command substitution
# In this mode you can request colored hints using GIT_PS1_SHOWCOLORHINTS=true
__git_ps1 ()
{
+ # preserve exit status
+ local exit=$?
local pcmode=no
local detached=no
local ps1pc_start='\u@\h:\w '
ps1pc_start="$1"
ps1pc_end="$2"
printf_format="${3:-$printf_format}"
+ # set PS1 to a plain prompt so that we can
+ # simply return early if the prompt should not
+ # be decorated
+ PS1="$ps1pc_start$ps1pc_end"
;;
0|1) printf_format="${1:-$printf_format}"
;;
- *) return
+ *) return $exit
;;
esac
- local g="$(__gitdir)"
- if [ -z "$g" ]; then
- if [ $pcmode = yes ]; then
- #In PC mode PS1 always needs to be set
- PS1="$ps1pc_start$ps1pc_end"
+ # ps1_expanded: This variable is set to 'yes' if the shell
+ # subjects the value of PS1 to parameter expansion:
+ #
+ # * bash does unless the promptvars option is disabled
+ # * zsh does not unless the PROMPT_SUBST option is set
+ # * POSIX shells always do
+ #
+ # If the shell would expand the contents of PS1 when drawing
+ # the prompt, a raw ref name must not be included in PS1.
+ # This protects the user from arbitrary code execution via
+ # specially crafted ref names. For example, a ref named
+ # 'refs/heads/$(IFS=_;cmd=sudo_rm_-rf_/;$cmd)' might cause the
+ # shell to execute 'sudo rm -rf /' when the prompt is drawn.
+ #
+ # Instead, the ref name should be placed in a separate global
+ # variable (in the __git_ps1_* namespace to avoid colliding
+ # with the user's environment) and that variable should be
+ # referenced from PS1. For example:
+ #
+ # __git_ps1_foo=$(do_something_to_get_ref_name)
+ # PS1="...stuff...\${__git_ps1_foo}...stuff..."
+ #
+ # If the shell does not expand the contents of PS1, the raw
+ # ref name must be included in PS1.
+ #
+ # The value of this variable is only relevant when in pcmode.
+ #
+ # Assume that the shell follows the POSIX specification and
+ # expands PS1 unless determined otherwise. (This is more
+ # likely to be correct if the user has a non-bash, non-zsh
+ # shell and safer than the alternative if the assumption is
+ # incorrect.)
+ #
+ local ps1_expanded=yes
+ [ -z "$ZSH_VERSION" ] || [[ -o PROMPT_SUBST ]] || ps1_expanded=no
+ [ -z "$BASH_VERSION" ] || shopt -q promptvars || ps1_expanded=no
+
+ local repo_info rev_parse_exit_code
+ repo_info="$(git rev-parse --git-dir --is-inside-git-dir \
+ --is-bare-repository --is-inside-work-tree \
+ --short HEAD 2>/dev/null)"
+ rev_parse_exit_code="$?"
+
+ if [ -z "$repo_info" ]; then
+ return $exit
+ fi
+
+ local short_sha
+ if [ "$rev_parse_exit_code" = "0" ]; then
+ short_sha="${repo_info##*$'\n'}"
+ repo_info="${repo_info%$'\n'*}"
+ fi
+ local inside_worktree="${repo_info##*$'\n'}"
+ repo_info="${repo_info%$'\n'*}"
+ local bare_repo="${repo_info##*$'\n'}"
+ repo_info="${repo_info%$'\n'*}"
+ local inside_gitdir="${repo_info##*$'\n'}"
+ local g="${repo_info%$'\n'*}"
+
+ if [ "true" = "$inside_worktree" ] &&
+ [ -n "${GIT_PS1_HIDE_IF_PWD_IGNORED-}" ] &&
+ [ "$(git config --bool bash.hideIfPwdIgnored)" != "false" ] &&
+ git check-ignore -q .
+ then
+ return $exit
+ fi
+
+ local r=""
+ local b=""
+ local step=""
+ local total=""
+ if [ -d "$g/rebase-merge" ]; then
+ __git_eread "$g/rebase-merge/head-name" b
+ __git_eread "$g/rebase-merge/msgnum" step
+ __git_eread "$g/rebase-merge/end" total
+ if [ -f "$g/rebase-merge/interactive" ]; then
+ r="|REBASE-i"
+ else
+ r="|REBASE-m"
fi
else
- local r=""
- local b=""
- local step=""
- local total=""
- if [ -d "$g/rebase-merge" ]; then
- b="$(cat "$g/rebase-merge/head-name")"
- step=$(cat "$g/rebase-merge/msgnum")
- total=$(cat "$g/rebase-merge/end")
- if [ -f "$g/rebase-merge/interactive" ]; then
- r="|REBASE-i"
+ if [ -d "$g/rebase-apply" ]; then
+ __git_eread "$g/rebase-apply/next" step
+ __git_eread "$g/rebase-apply/last" total
+ if [ -f "$g/rebase-apply/rebasing" ]; then
+ __git_eread "$g/rebase-apply/head-name" b
+ r="|REBASE"
+ elif [ -f "$g/rebase-apply/applying" ]; then
+ r="|AM"
else
- r="|REBASE-m"
+ r="|AM/REBASE"
fi
+ elif [ -f "$g/MERGE_HEAD" ]; then
+ r="|MERGING"
+ elif [ -f "$g/CHERRY_PICK_HEAD" ]; then
+ r="|CHERRY-PICKING"
+ elif [ -f "$g/REVERT_HEAD" ]; then
+ r="|REVERTING"
+ elif [ -f "$g/BISECT_LOG" ]; then
+ r="|BISECTING"
+ fi
+
+ if [ -n "$b" ]; then
+ :
+ elif [ -h "$g/HEAD" ]; then
+ # symlink symbolic ref
+ b="$(git symbolic-ref HEAD 2>/dev/null)"
else
- if [ -d "$g/rebase-apply" ]; then
- step=$(cat "$g/rebase-apply/next")
- total=$(cat "$g/rebase-apply/last")
- if [ -f "$g/rebase-apply/rebasing" ]; then
- r="|REBASE"
- elif [ -f "$g/rebase-apply/applying" ]; then
- r="|AM"
- else
- r="|AM/REBASE"
- fi
- elif [ -f "$g/MERGE_HEAD" ]; then
- r="|MERGING"
- elif [ -f "$g/CHERRY_PICK_HEAD" ]; then
- r="|CHERRY-PICKING"
- elif [ -f "$g/REVERT_HEAD" ]; then
- r="|REVERTING"
- elif [ -f "$g/BISECT_LOG" ]; then
- r="|BISECTING"
+ local head=""
+ if ! __git_eread "$g/HEAD" head; then
+ return $exit
fi
-
- b="$(git symbolic-ref HEAD 2>/dev/null)" || {
+ # is it a symbolic ref?
+ b="${head#ref: }"
+ if [ "$head" = "$b" ]; then
detached=yes
b="$(
case "${GIT_PS1_DESCRIBE_STYLE-}" in
git describe --tags --exact-match HEAD ;;
esac 2>/dev/null)" ||
- b="$(cut -c1-7 "$g/HEAD" 2>/dev/null)..." ||
- b="unknown"
+ b="$short_sha..."
b="($b)"
- }
+ fi
fi
+ fi
- if [ -n "$step" ] && [ -n "$total" ]; then
- r="$r $step/$total"
- fi
+ if [ -n "$step" ] && [ -n "$total" ]; then
+ r="$r $step/$total"
+ fi
- local w=""
- local i=""
- local s=""
- local u=""
- local c=""
- local p=""
+ local w=""
+ local i=""
+ local s=""
+ local u=""
+ local c=""
+ local p=""
- if [ "true" = "$(git rev-parse --is-inside-git-dir 2>/dev/null)" ]; then
- if [ "true" = "$(git rev-parse --is-bare-repository 2>/dev/null)" ]; then
- c="BARE:"
+ if [ "true" = "$inside_gitdir" ]; then
+ if [ "true" = "$bare_repo" ]; then
+ c="BARE:"
+ else
+ b="GIT_DIR!"
+ fi
+ elif [ "true" = "$inside_worktree" ]; then
+ if [ -n "${GIT_PS1_SHOWDIRTYSTATE-}" ] &&
+ [ "$(git config --bool bash.showDirtyState)" != "false" ]
+ then
+ git diff --no-ext-diff --quiet --exit-code || w="*"
+ if [ -n "$short_sha" ]; then
+ git diff-index --cached --quiet HEAD -- || i="+"
else
- b="GIT_DIR!"
- fi
- elif [ "true" = "$(git rev-parse --is-inside-work-tree 2>/dev/null)" ]; then
- if [ -n "${GIT_PS1_SHOWDIRTYSTATE-}" ] &&
- [ "$(git config --bool bash.showDirtyState)" != "false" ]
- then
- git diff --no-ext-diff --quiet --exit-code || w="*"
- if git rev-parse --quiet --verify HEAD >/dev/null; then
- git diff-index --cached --quiet HEAD -- || i="+"
- else
- i="#"
- fi
- fi
- if [ -n "${GIT_PS1_SHOWSTASHSTATE-}" ]; then
- git rev-parse --verify refs/stash >/dev/null 2>&1 && s="$"
+ i="#"
fi
+ fi
+ if [ -n "${GIT_PS1_SHOWSTASHSTATE-}" ] &&
+ git rev-parse --verify --quiet refs/stash >/dev/null
+ then
+ s="$"
+ fi
- if [ -n "${GIT_PS1_SHOWUNTRACKEDFILES-}" ] &&
- [ "$(git config --bool bash.showUntrackedFiles)" != "false" ] &&
- [ -n "$(git ls-files --others --exclude-standard)" ]
- then
- u="%${ZSH_VERSION+%}"
- fi
+ if [ -n "${GIT_PS1_SHOWUNTRACKEDFILES-}" ] &&
+ [ "$(git config --bool bash.showUntrackedFiles)" != "false" ] &&
+ git ls-files --others --exclude-standard --error-unmatch -- ':/*' >/dev/null 2>/dev/null
+ then
+ u="%${ZSH_VERSION+%}"
+ fi
- if [ -n "${GIT_PS1_SHOWUPSTREAM-}" ]; then
- __git_ps1_show_upstream
- fi
+ if [ -n "${GIT_PS1_SHOWUPSTREAM-}" ]; then
+ __git_ps1_show_upstream
fi
+ fi
- local z="${GIT_PS1_STATESEPARATOR-" "}"
- local f="$w$i$s$u"
- if [ $pcmode = yes ]; then
- local gitstring=
- if [ -n "${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 gitstring directly with \[ and \] around colors
- # is necessary to prevent wrapping issues!
- gitstring="\[$branch_color\]$branchstring\[$c_clear\]"
-
- if [ -n "$w$i$s$u$r$p" ]; then
- gitstring="$gitstring$z"
- fi
- if [ "$w" = "*" ]; then
- gitstring="$gitstring\[$bad_color\]$w"
- fi
- if [ -n "$i" ]; then
- gitstring="$gitstring\[$ok_color\]$i"
- fi
- if [ -n "$s" ]; then
- gitstring="$gitstring\[$flags_color\]$s"
- fi
- if [ -n "$u" ]; then
- gitstring="$gitstring\[$bad_color\]$u"
- fi
- gitstring="$gitstring\[$c_clear\]$r$p"
- else
- gitstring="$c${b##refs/heads/}${f:+$z$f}$r$p"
- fi
+ local z="${GIT_PS1_STATESEPARATOR-" "}"
+
+ # NO color option unless in PROMPT_COMMAND mode
+ if [ $pcmode = yes ] && [ -n "${GIT_PS1_SHOWCOLORHINTS-}" ]; then
+ __git_ps1_colorize_gitstring
+ fi
+
+ b=${b##refs/heads/}
+ if [ $pcmode = yes ] && [ $ps1_expanded = yes ]; then
+ __git_ps1_branch_name=$b
+ b="\${__git_ps1_branch_name}"
+ fi
+
+ local f="$w$i$s$u"
+ local gitstring="$c$b${f:+$z$f}$r$p"
+
+ if [ $pcmode = yes ]; then
+ if [ "${__git_printf_supports_v-}" != yes ]; then
gitstring=$(printf -- "$printf_format" "$gitstring")
- PS1="$ps1pc_start$gitstring$ps1pc_end"
else
- # NO color option unless in PROMPT_COMMAND mode
- printf -- "$printf_format" "$c${b##refs/heads/}${f:+$z$f}$r$p"
+ printf -v gitstring -- "$printf_format" "$gitstring"
fi
+ PS1="$ps1pc_start$gitstring$ps1pc_end"
+ else
+ printf -- "$printf_format" "$gitstring"
fi
+
+ return $exit
}