[thirdparty/git.git] / contrib / completion / git-prompt.sh

# bash/zsh git prompt support
#
# 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.
#
# To enable:
#
#    1) Copy this file to somewhere (e.g. ~/.git-prompt.sh).
#    2) Add the following line to your .bashrc/.zshrc:
#        source ~/.git-prompt.sh
#    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 $PS1 before
#        and after the status string generated by the git-prompt
#        machinery.  e.g.
#        Bash: PROMPT_COMMAND='__git_ps1 "\u@\h:\w" "\\\$ "'
#        ZSH:  precmd () { __git_ps1 "%n" ":%~$ " "|%s" }
#        will show username, at-sign, host, colon, cwd, then
#        various status string, followed by 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.
#
# In addition, if you set GIT_PS1_SHOWDIRTYSTATE to a nonempty value,
# unstaged (*) and staged (+) changes will be shown next to the branch
# name.  You can configure this per-repository with the
# bash.showDirtyState variable, which defaults to true once
# GIT_PS1_SHOWDIRTYSTATE is enabled.
#
# You can also see if currently something is stashed, by setting
# GIT_PS1_SHOWSTASHSTATE to a nonempty value. If something is stashed,
# then a '$' will be shown next to the branch name.
#
# If you would like to see if there're untracked files, then you can set
# GIT_PS1_SHOWUNTRACKEDFILES to a nonempty value. If there're untracked
# files, then a '%' will be shown next to the branch name.  You can
# configure this per-repository with the bash.showUntrackedFiles
# variable, which defaults to true once GIT_PS1_SHOWUNTRACKEDFILES is
# enabled.
#
# If you would like to see the difference between HEAD and its upstream,
# set GIT_PS1_SHOWUPSTREAM="auto".  A "<" indicates you are behind, ">"
# indicates you are ahead, "<>" indicates you have diverged and "="
# indicates that there is no difference. You can further control
# behaviour by setting GIT_PS1_SHOWUPSTREAM to a space-separated list
# of values:
#
#     verbose       show number of commits ahead/behind (+/-) upstream
#     legacy        don't use the '--count' option available in recent
#                   versions of git-rev-list
#     git           always compare HEAD to @{upstream}
#     svn           always compare HEAD to your SVN upstream
#
# By default, __git_ps1 will compare HEAD to your SVN upstream if it can
# 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".

# stores the divergence from upstream in $p
# used by GIT_PS1_SHOWUPSTREAM
__git_ps1_show_upstream ()
{
	local key value
	local svn_remote svn_url_pattern count n
	local upstream=git legacy="" verbose=""

	svn_remote=()
	# get some config options from git-config
	local output="$(git config -z --get-regexp '^(svn-remote\..*\.url|bash\.showupstream)$' 2>/dev/null | tr '\0\n' '\n ')"
	while read -r key value; do
		case "$key" in
		bash.showupstream)
			GIT_PS1_SHOWUPSTREAM="$value"
			if [[ -z "${GIT_PS1_SHOWUPSTREAM}" ]]; then
				p=""
				return
			fi
			;;
		svn-remote.*.url)
			svn_remote[$((${#svn_remote[@]} + 1))]="$value"
			svn_url_pattern+="\\|$value"
			upstream=svn+git # default upstream is SVN if available, else git
			;;
		esac
	done <<< "$output"

	# parse configuration values
	for option in ${GIT_PS1_SHOWUPSTREAM}; do
		case "$option" in
		git|svn) upstream="$option" ;;
		verbose) verbose=1 ;;
		legacy)  legacy=1  ;;
		esac
	done

	# Find our upstream
	case "$upstream" in
	git)    upstream="@{upstream}" ;;
	svn*)
		# get the upstream from the "git-svn-id: ..." in a commit message
		# (git-svn uses essentially the same procedure internally)
		local -a svn_upstream
		svn_upstream=($(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%@*}
			local n_stop="${#svn_remote[@]}"
			for ((n=1; n <= n_stop; n++)); do
				svn_upstream=${svn_upstream#${svn_remote[$n]}}
			done

			if [[ -z "$svn_upstream" ]]; then
				# default branch name for checkouts with no layout:
				upstream=${GIT_SVN_ID:-git-svn}
			else
				upstream=${svn_upstream#/}
			fi
		elif [[ "svn+git" = "$upstream" ]]; then
			upstream="@{upstream}"
		fi
		;;
	esac

	# Find how many commits we are ahead/behind our upstream
	if [[ -z "$legacy" ]]; then
		count="$(git rev-list --count --left-right \
				"$upstream"...HEAD 2>/dev/null)"
	else
		# produce equivalent output to --count for older versions of git
		local commits
		if commits="$(git rev-list --left-right "$upstream"...HEAD 2>/dev/null)"
		then
			local commit behind=0 ahead=0
			for commit in $commits
			do
				case "$commit" in
				"<"*) ((behind++)) ;;
				*)    ((ahead++))  ;;
				esac
			done
			count="$behind	$ahead"
		else
			count=""
		fi
	fi

	# calculate the result
	if [[ -z "$verbose" ]]; then
		case "$count" in
		"") # no upstream
			p="" ;;
		"0	0") # equal to upstream
			p="=" ;;
		"0	"*) # ahead of upstream
			p=">" ;;
		*"	0") # behind upstream
			p="<" ;;
		*)	    # diverged from upstream
			p="<>" ;;
		esac
	else
		case "$count" in
		"") # no upstream
			p="" ;;
		"0	0") # equal to upstream
			p=" u=" ;;
		"0	"*) # ahead of upstream
			p=" u+${count#0	}" ;;
		*"	0") # behind upstream
			p=" u-${count%	0}" ;;
		*)	    # diverged from upstream
			p=" u+${count#*	}-${count%	*}" ;;
		esac
	fi

}

# Helper function that is meant to be called from __git_ps1.  It
# builds up a gitstring injecting color codes into the appropriate
# places.
__git_ps1_colorize_gitstring ()
{
	if [[ -n ${ZSH_VERSION-} ]]; then
		local c_red='%F{red}'
		local c_green='%F{green}'
		local c_lblue='%F{blue}'
		local c_clear='%f'
		local bad_color=$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

		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"
		return
	fi
	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"
}

# __git_ps1 accepts 0 or 1 arguments (i.e., format string)
# 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 or 3 arguments when called from PROMPT_COMMAND (pc)
# in that case it _sets_ PS1. The arguments are parts of a PS1 string.
# when two arguments are given, the first is prepended and the second appended
# to the state string when assigned to PS1.
# The optional third parameter will be used as printf format string to further
# customize the output of the git-status string.
# 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|3)	pcmode=yes
			ps1pc_start="$1"
			ps1pc_end="$2"
			printf_format="${3:-$printf_format}"
		;;
		0|1)	printf_format="${1:-$printf_format}"
		;;
		*)	return
		;;
	esac

	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
		if [ $pcmode = yes ]; then
			#In PC mode PS1 always needs to be set
			PS1="$ps1pc_start$ps1pc_end"
		fi
		return
	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'*}"

	local r=""
	local b=""
	local step=""
	local total=""
	if [ -d "$g/rebase-merge" ]; then
		read b 2>/dev/null <"$g/rebase-merge/head-name"
		read step 2>/dev/null <"$g/rebase-merge/msgnum"
		read total 2>/dev/null <"$g/rebase-merge/end"
		if [ -f "$g/rebase-merge/interactive" ]; then
			r="|REBASE-i"
		else
			r="|REBASE-m"
		fi
	else
		if [ -d "$g/rebase-apply" ]; then
			read step 2>/dev/null <"$g/rebase-apply/next"
			read total 2>/dev/null <"$g/rebase-apply/last"
			if [ -f "$g/rebase-apply/rebasing" ]; then
				read b 2>/dev/null <"$g/rebase-apply/head-name"
				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"
		fi

		if [ -n "$b" ]; then
			:
		elif [ -h "$g/HEAD" ]; then
			# symlink symbolic ref
			b="$(git symbolic-ref HEAD 2>/dev/null)"
		else
			local head=""
			if ! read head 2>/dev/null <"$g/HEAD"; then
				if [ $pcmode = yes ]; then
					PS1="$ps1pc_start$ps1pc_end"
				fi
				return
			fi
			# is it a symbolic ref?
			b="${head#ref: }"
			if [ "$head" = "$b" ]; then
				detached=yes
				b="$(
				case "${GIT_PS1_DESCRIBE_STYLE-}" in
				(contains)
					git describe --contains HEAD ;;
				(branch)
					git describe --contains --all HEAD ;;
				(describe)
					git describe HEAD ;;
				(* | default)
					git describe --tags --exact-match HEAD ;;
				esac 2>/dev/null)" ||

				b="$short_sha..."
				b="($b)"
			fi
		fi
	fi

	if [ -n "$step" ] && [ -n "$total" ]; then
		r="$r $step/$total"
	fi

	local w=""
	local i=""
	local s=""
	local u=""
	local c=""
	local p=""

	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
				i="#"
			fi
		fi
		if [ -n "${GIT_PS1_SHOWSTASHSTATE-}" ] &&
		   [ -r "$g/refs/stash" ]; then
			s="$"
		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
	fi

	local z="${GIT_PS1_STATESEPARATOR-" "}"
	local f="$w$i$s$u"
	if [ $pcmode = yes ]; then
		local gitstring=
		if [ -n "${GIT_PS1_SHOWCOLORHINTS-}" ]; then
			__git_ps1_colorize_gitstring
		else
			gitstring="$c${b##refs/heads/}${f:+$z$f}$r$p"
		fi
		if [[ -n ${ZSH_VERSION-} ]]; then
			gitstring=$(printf -- "$printf_format" "$gitstring")
		else
			printf -v gitstring -- "$printf_format" "$gitstring"
		fi
		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$p"
	fi
}
Commit	Line	Data
af31a456 FC	1	# bash/zsh git prompt support
	2	#
	3	# Copyright (C) 2006,2007 Shawn O. Pearce <spearce@spearce.org>
	4	# Distributed under the GNU General Public License, version 2.0.
	5	#
	6	# This script allows you to see the current branch in your prompt.
	7	#
	8	# To enable:
	9	#
	10	# 1) Copy this file to somewhere (e.g. ~/.git-prompt.sh).
	11	# 2) Add the following line to your .bashrc/.zshrc:
	12	# source ~/.git-prompt.sh
de29a7ac	13	# 3a) Change your PS1 to call __git_ps1 as
1bfc51ac SO	14	# command-substitution:
	15	# Bash: PS1='[\u@\h \W$(__git_ps1 " (%s)")]\$ '
	16	# ZSH: PS1='[%n@%m %c$(__git_ps1 " (%s)")]\$ '
de29a7ac JH	17	# the optional argument will be used as format string.
	18	# 3b) Alternatively, if you are using bash, __git_ps1 can be
	19	# used for PROMPT_COMMAND with two parameters, <pre> and
	20	# <post>, which are strings you would put in $PS1 before
	21	# and after the status string generated by the git-prompt
	22	# machinery. e.g.
9678696c RR	23	# Bash: PROMPT_COMMAND='__git_ps1 "\u@\h:\w" "\\\$ "'
9678696c RR	24	# ZSH: precmd () { __git_ps1 "%n" ":%~$ " "\|%s" }
de29a7ac JH	25	# will show username, at-sign, host, colon, cwd, then
	26	# various status string, followed by dollar and SP, as
	27	# your prompt.
126b5969 SO	28	# Optionally, you can supply a third argument with a printf
126b5969 SO	29	# format string to finetune the output of the branch status
af31a456 FC	30	#
	31	# The argument to __git_ps1 will be displayed only if you are currently
	32	# in a git repository. The %s token will be the name of the current
	33	# branch.
	34	#
	35	# In addition, if you set GIT_PS1_SHOWDIRTYSTATE to a nonempty value,
	36	# unstaged (*) and staged (+) changes will be shown next to the branch
	37	# name. You can configure this per-repository with the
	38	# bash.showDirtyState variable, which defaults to true once
	39	# GIT_PS1_SHOWDIRTYSTATE is enabled.
	40	#
	41	# You can also see if currently something is stashed, by setting
	42	# GIT_PS1_SHOWSTASHSTATE to a nonempty value. If something is stashed,
	43	# then a '$' will be shown next to the branch name.
	44	#
	45	# If you would like to see if there're untracked files, then you can set
	46	# GIT_PS1_SHOWUNTRACKEDFILES to a nonempty value. If there're untracked
66cb5d44 MEW	47	# files, then a '%' will be shown next to the branch name. You can
	48	# configure this per-repository with the bash.showUntrackedFiles
	49	# variable, which defaults to true once GIT_PS1_SHOWUNTRACKEDFILES is
	50	# enabled.
af31a456 FC	51	#
	52	# If you would like to see the difference between HEAD and its upstream,
	53	# set GIT_PS1_SHOWUPSTREAM="auto". A "<" indicates you are behind, ">"
f9db1921 JDL	54	# indicates you are ahead, "<>" indicates you have diverged and "="
	55	# indicates that there is no difference. You can further control
	56	# behaviour by setting GIT_PS1_SHOWUPSTREAM to a space-separated list
	57	# of values:
af31a456 FC	58	#
	59	# verbose show number of commits ahead/behind (+/-) upstream
	60	# legacy don't use the '--count' option available in recent
	61	# versions of git-rev-list
	62	# git always compare HEAD to @{upstream}
	63	# svn always compare HEAD to your SVN upstream
	64	#
	65	# By default, __git_ps1 will compare HEAD to your SVN upstream if it can
	66	# find one, or @{upstream} otherwise. Once you have set
	67	# GIT_PS1_SHOWUPSTREAM, you can override it on a per-repository basis by
	68	# setting the bash.showUpstream config variable.
9b7e776c	69	#
50b03b04 AK	70	# If you would like to see more information about the identity of
	71	# commits checked out as a detached HEAD, set GIT_PS1_DESCRIBE_STYLE
	72	# to one of these values:
	73	#
	74	# contains relative to newer annotated tag (v1.6.3.2~35)
	75	# branch relative to newer tag or branch (master~4)
	76	# describe relative to older annotated tag (v1.6.3.1-13-gdd42c2f)
	77	# default exactly matching tag
f993e2e1	78	#
9b7e776c	79	# If you would like a colored hint about the current dirty state, set
9b3aaf8b SO	80	# GIT_PS1_SHOWCOLORHINTS to a nonempty value. The colors are based on
9b3aaf8b SO	81	# the colored output of "git status -sb".
af31a456	82
af31a456 FC	83	# stores the divergence from upstream in $p
	84	# used by GIT_PS1_SHOWUPSTREAM
	85	__git_ps1_show_upstream ()
	86	{
	87	local key value
	88	local svn_remote svn_url_pattern count n
	89	local upstream=git legacy="" verbose=""
	90
	91	svn_remote=()
	92	# get some config options from git-config
	93	local output="$(git config -z --get-regexp '^(svn-remote\..*\.url\|bash\.showupstream)$' 2>/dev/null \| tr '\0\n' '\n ')"
	94	while read -r key value; do
	95	case "$key" in
	96	bash.showupstream)
	97	GIT_PS1_SHOWUPSTREAM="$value"
	98	if [[ -z "${GIT_PS1_SHOWUPSTREAM}" ]]; then
	99	p=""
	100	return
	101	fi
	102	;;
	103	svn-remote.*.url)
d0583da8	104	svn_remote[$((${#svn_remote[@]} + 1))]="$value"
af31a456 FC	105	svn_url_pattern+="\\\|$value"
	106	upstream=svn+git # default upstream is SVN if available, else git
	107	;;
	108	esac
	109	done <<< "$output"
	110
	111	# parse configuration values
	112	for option in ${GIT_PS1_SHOWUPSTREAM}; do
	113	case "$option" in
	114	git\|svn) upstream="$option" ;;
	115	verbose) verbose=1 ;;
	116	legacy) legacy=1 ;;
	117	esac
	118	done
	119
	120	# Find our upstream
	121	case "$upstream" in
	122	git) upstream="@{upstream}" ;;
	123	svn*)
	124	# get the upstream from the "git-svn-id: ..." in a commit message
	125	# (git-svn uses essentially the same procedure internally)
d0583da8 TG	126	local -a svn_upstream
d0583da8 TG	127	svn_upstream=($(git log --first-parent -1 \
af31a456 FC	128	--grep="^git-svn-id: \(${svn_url_pattern#??}\)" 2>/dev/null))
af31a456 FC	129	if [[ 0 -ne ${#svn_upstream[@]} ]]; then
d0583da8	130	svn_upstream=${svn_upstream[${#svn_upstream[@]} - 2]}
af31a456 FC	131	svn_upstream=${svn_upstream%@*}
	132	local n_stop="${#svn_remote[@]}"
	133	for ((n=1; n <= n_stop; n++)); do
	134	svn_upstream=${svn_upstream#${svn_remote[$n]}}
	135	done
	136
	137	if [[ -z "$svn_upstream" ]]; then
	138	# default branch name for checkouts with no layout:
	139	upstream=${GIT_SVN_ID:-git-svn}
	140	else
	141	upstream=${svn_upstream#/}
	142	fi
	143	elif [[ "svn+git" = "$upstream" ]]; then
	144	upstream="@{upstream}"
	145	fi
	146	;;
	147	esac
	148
	149	# Find how many commits we are ahead/behind our upstream
	150	if [[ -z "$legacy" ]]; then
	151	count="$(git rev-list --count --left-right \
	152	"$upstream"...HEAD 2>/dev/null)"
	153	else
	154	# produce equivalent output to --count for older versions of git
	155	local commits
	156	if commits="$(git rev-list --left-right "$upstream"...HEAD 2>/dev/null)"
	157	then
	158	local commit behind=0 ahead=0
	159	for commit in $commits
	160	do
	161	case "$commit" in
	162	"<"*) ((behind++)) ;;
	163	*) ((ahead++)) ;;
	164	esac
	165	done
	166	count="$behind $ahead"
	167	else
	168	count=""
	169	fi
	170	fi
	171
	172	# calculate the result
	173	if [[ -z "$verbose" ]]; then
	174	case "$count" in
	175	"") # no upstream
	176	p="" ;;
	177	"0 0") # equal to upstream
	178	p="=" ;;
	179	"0 "*) # ahead of upstream
	180	p=">" ;;
	181	*" 0") # behind upstream
	182	p="<" ;;
	183	*) # diverged from upstream
	184	p="<>" ;;
	185	esac
	186	else
	187	case "$count" in
	188	"") # no upstream
	189	p="" ;;
	190	"0 0") # equal to upstream
	191	p=" u=" ;;
	192	"0 "*) # ahead of upstream
	193	p=" u+${count#0 }" ;;
	194	*" 0") # behind upstream
195	p=" u-${count% 0}" ;;
196	*) # diverged from upstream
197	p=" u+${count#* }-${count% *}" ;;
198	esac
199	fi
200
201	}
202
18562ad1 RR	203	# Helper function that is meant to be called from __git_ps1. It
	204	# builds up a gitstring injecting color codes into the appropriate
	205	# places.
	206	__git_ps1_colorize_gitstring ()
	207	{
9678696c RR	208	if [[ -n ${ZSH_VERSION-} ]]; then
	209	local c_red='%F{red}'
	210	local c_green='%F{green}'
	211	local c_lblue='%F{blue}'
	212	local c_clear='%f'
	213	local bad_color=$c_red
	214	local ok_color=$c_green
	215	local branch_color="$c_clear"
	216	local flags_color="$c_lblue"
	217	local branchstring="$c${b##refs/heads/}"
	218
	219	if [ $detached = no ]; then
	220	branch_color="$ok_color"
	221	else
	222	branch_color="$bad_color"
	223	fi
	224
	225	gitstring="$branch_color$branchstring$c_clear"
	226
	227	if [ -n "$w$i$s$u$r$p" ]; then
	228	gitstring="$gitstring$z"
	229	fi
	230	if [ "$w" = "*" ]; then
	231	gitstring="$gitstring$bad_color$w"
	232	fi
	233	if [ -n "$i" ]; then
	234	gitstring="$gitstring$ok_color$i"
	235	fi
	236	if [ -n "$s" ]; then
	237	gitstring="$gitstring$flags_color$s"
	238	fi
	239	if [ -n "$u" ]; then
	240	gitstring="$gitstring$bad_color$u"
	241	fi
	242	gitstring="$gitstring$c_clear$r$p"
	243	return
	244	fi
18562ad1 RR	245	local c_red='\e[31m'
	246	local c_green='\e[32m'
	247	local c_lblue='\e[1;34m'
	248	local c_clear='\e[0m'
	249	local bad_color=$c_red
	250	local ok_color=$c_green
	251	local branch_color="$c_clear"
	252	local flags_color="$c_lblue"
	253	local branchstring="$c${b##refs/heads/}"
	254
	255	if [ $detached = no ]; then
	256	branch_color="$ok_color"
	257	else
	258	branch_color="$bad_color"
	259	fi
	260
	261	# Setting gitstring directly with \[ and \] around colors
	262	# is necessary to prevent wrapping issues!
	263	gitstring="\[$branch_color\]$branchstring\[$c_clear\]"
	264
	265	if [ -n "$w$i$s$u$r$p" ]; then
	266	gitstring="$gitstring$z"
	267	fi
	268	if [ "$w" = "*" ]; then
	269	gitstring="$gitstring\[$bad_color\]$w"
	270	fi
	271	if [ -n "$i" ]; then
	272	gitstring="$gitstring\[$ok_color\]$i"
	273	fi
	274	if [ -n "$s" ]; then
	275	gitstring="$gitstring\[$flags_color\]$s"
	276	fi
	277	if [ -n "$u" ]; then
	278	gitstring="$gitstring\[$bad_color\]$u"
	279	fi
	280	gitstring="$gitstring\[$c_clear\]$r$p"
	281	}
af31a456 FC	282
af31a456 FC	283	# __git_ps1 accepts 0 or 1 arguments (i.e., format string)
1bfc51ac SO	284	# when called from PS1 using command substitution
	285	# in this mode it prints text to add to bash PS1 prompt (includes branch name)
	286	#
126b5969	287	# __git_ps1 requires 2 or 3 arguments when called from PROMPT_COMMAND (pc)
1bfc51ac	288	# in that case it _sets_ PS1. The arguments are parts of a PS1 string.
126b5969	289	# when two arguments are given, the first is prepended and the second appended
1bfc51ac	290	# to the state string when assigned to PS1.
126b5969 SO	291	# The optional third parameter will be used as printf format string to further
126b5969 SO	292	# customize the output of the git-status string.
9b7e776c	293	# In this mode you can request colored hints using GIT_PS1_SHOWCOLORHINTS=true
af31a456 FC	294	__git_ps1 ()
af31a456 FC	295	{
1bfc51ac	296	local pcmode=no
9b3aaf8b	297	local detached=no
1bfc51ac SO	298	local ps1pc_start='\u@\h:\w '
	299	local ps1pc_end='\$ '
	300	local printf_format=' (%s)'
	301
	302	case "$#" in
126b5969	303	2\|3) pcmode=yes
1bfc51ac SO	304	ps1pc_start="$1"
1bfc51ac SO	305	ps1pc_end="$2"
126b5969	306	printf_format="${3:-$printf_format}"
1bfc51ac SO	307	;;
	308	0\|1) printf_format="${1:-$printf_format}"
	309	;;
	310	*) return
	311	;;
	312	esac
	313
e3e0b937 SG	314	local repo_info rev_parse_exit_code
	315	repo_info="$(git rev-parse --git-dir --is-inside-git-dir \
	316	--is-bare-repository --is-inside-work-tree \
	317	--short HEAD 2>/dev/null)"
	318	rev_parse_exit_code="$?"
	319
efaa0c15	320	if [ -z "$repo_info" ]; then
1bfc51ac SO	321	if [ $pcmode = yes ]; then
	322	#In PC mode PS1 always needs to be set
	323	PS1="$ps1pc_start$ps1pc_end"
	324	fi
96ea4047 SG	325	return
	326	fi
	327
e3e0b937 SG	328	local short_sha
	329	if [ "$rev_parse_exit_code" = "0" ]; then
	330	short_sha="${repo_info##*$'\n'}"
	331	repo_info="${repo_info%$'\n'*}"
	332	fi
efaa0c15 SG	333	local inside_worktree="${repo_info##*$'\n'}"
	334	repo_info="${repo_info%$'\n'*}"
	335	local bare_repo="${repo_info##*$'\n'}"
	336	repo_info="${repo_info%$'\n'*}"
	337	local inside_gitdir="${repo_info##*$'\n'}"
	338	local g="${repo_info%$'\n'*}"
	339
96ea4047 SG	340	local r=""
	341	local b=""
	342	local step=""
	343	local total=""
	344	if [ -d "$g/rebase-merge" ]; then
b91b935f SG	345	read b 2>/dev/null <"$g/rebase-merge/head-name"
	346	read step 2>/dev/null <"$g/rebase-merge/msgnum"
	347	read total 2>/dev/null <"$g/rebase-merge/end"
96ea4047 SG	348	if [ -f "$g/rebase-merge/interactive" ]; then
	349	r="\|REBASE-i"
	350	else
	351	r="\|REBASE-m"
	352	fi
1bfc51ac	353	else
96ea4047	354	if [ -d "$g/rebase-apply" ]; then
b91b935f SG	355	read step 2>/dev/null <"$g/rebase-apply/next"
b91b935f SG	356	read total 2>/dev/null <"$g/rebase-apply/last"
96ea4047	357	if [ -f "$g/rebase-apply/rebasing" ]; then
b91b935f	358	read b 2>/dev/null <"$g/rebase-apply/head-name"
96ea4047 SG	359	r="\|REBASE"
	360	elif [ -f "$g/rebase-apply/applying" ]; then
	361	r="\|AM"
b71dc3e1	362	else
96ea4047	363	r="\|AM/REBASE"
af31a456	364	fi
96ea4047 SG	365	elif [ -f "$g/MERGE_HEAD" ]; then
	366	r="\|MERGING"
	367	elif [ -f "$g/CHERRY_PICK_HEAD" ]; then
	368	r="\|CHERRY-PICKING"
	369	elif [ -f "$g/REVERT_HEAD" ]; then
	370	r="\|REVERTING"
	371	elif [ -f "$g/BISECT_LOG" ]; then
	372	r="\|BISECTING"
	373	fi
af31a456	374
3a43c4b5 SG	375	if [ -n "$b" ]; then
	376	:
	377	elif [ -h "$g/HEAD" ]; then
	378	# symlink symbolic ref
	379	b="$(git symbolic-ref HEAD 2>/dev/null)"
	380	else
	381	local head=""
	382	if ! read head 2>/dev/null <"$g/HEAD"; then
	383	if [ $pcmode = yes ]; then
	384	PS1="$ps1pc_start$ps1pc_end"
	385	fi
	386	return
	387	fi
	388	# is it a symbolic ref?
	389	b="${head#ref: }"
	390	if [ "$head" = "$b" ]; then
	391	detached=yes
	392	b="$(
	393	case "${GIT_PS1_DESCRIBE_STYLE-}" in
	394	(contains)
	395	git describe --contains HEAD ;;
	396	(branch)
	397	git describe --contains --all HEAD ;;
	398	(describe)
	399	git describe HEAD ;;
	400	(* \| default)
	401	git describe --tags --exact-match HEAD ;;
	402	esac 2>/dev/null)" \|\|
af31a456	403
e3e0b937	404	b="$short_sha..."
3a43c4b5 SG	405	b="($b)"
	406	fi
	407	fi
96ea4047	408	fi
af31a456	409
96ea4047 SG	410	if [ -n "$step" ] && [ -n "$total" ]; then
	411	r="$r $step/$total"
	412	fi
b71dc3e1	413
96ea4047 SG	414	local w=""
	415	local i=""
	416	local s=""
	417	local u=""
	418	local c=""
	419	local p=""
af31a456	420
efaa0c15 SG	421	if [ "true" = "$inside_gitdir" ]; then
efaa0c15 SG	422	if [ "true" = "$bare_repo" ]; then
96ea4047 SG	423	c="BARE:"
	424	else
	425	b="GIT_DIR!"
	426	fi
efaa0c15	427	elif [ "true" = "$inside_worktree" ]; then
96ea4047 SG	428	if [ -n "${GIT_PS1_SHOWDIRTYSTATE-}" ] &&
	429	[ "$(git config --bool bash.showDirtyState)" != "false" ]
	430	then
	431	git diff --no-ext-diff --quiet --exit-code \|\| w="*"
0f37c125	432	if [ -n "$short_sha" ]; then
96ea4047	433	git diff-index --cached --quiet HEAD -- \|\| i="+"
af31a456	434	else
96ea4047	435	i="#"
af31a456	436	fi
96ea4047	437	fi
dd0b72cb SG	438	if [ -n "${GIT_PS1_SHOWSTASHSTATE-}" ] &&
	439	[ -r "$g/refs/stash" ]; then
	440	s="$"
96ea4047	441	fi
af31a456	442
96ea4047 SG	443	if [ -n "${GIT_PS1_SHOWUNTRACKEDFILES-}" ] &&
96ea4047 SG	444	[ "$(git config --bool bash.showUntrackedFiles)" != "false" ] &&
14d76497	445	git ls-files --others --exclude-standard --error-unmatch -- '*' >/dev/null 2>/dev/null
96ea4047 SG	446	then
	447	u="%${ZSH_VERSION+%}"
	448	fi
af31a456	449
96ea4047 SG	450	if [ -n "${GIT_PS1_SHOWUPSTREAM-}" ]; then
96ea4047 SG	451	__git_ps1_show_upstream
af31a456	452	fi
96ea4047	453	fi
af31a456	454
96ea4047 SG	455	local z="${GIT_PS1_STATESEPARATOR-" "}"
	456	local f="$w$i$s$u"
	457	if [ $pcmode = yes ]; then
	458	local gitstring=
	459	if [ -n "${GIT_PS1_SHOWCOLORHINTS-}" ]; then
	460	__git_ps1_colorize_gitstring
1bfc51ac	461	else
96ea4047	462	gitstring="$c${b##refs/heads/}${f:+$z$f}$r$p"
1bfc51ac	463	fi
69a8141a SG	464	if [[ -n ${ZSH_VERSION-} ]]; then
	465	gitstring=$(printf -- "$printf_format" "$gitstring")
	466	else
	467	printf -v gitstring -- "$printf_format" "$gitstring"
	468	fi
96ea4047 SG	469	PS1="$ps1pc_start$gitstring$ps1pc_end"
	470	else
	471	# NO color option unless in PROMPT_COMMAND mode
	472	printf -- "$printf_format" "$c${b##refs/heads/}${f:+$z$f}$r$p"
af31a456 FC	473	fi
af31a456 FC	474	}