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#
# bash completion support for core Git.
#
# Copyright (C) 2006 Shawn Pearce
# Conceptually based on gitcompletion (http://gitweb.hawaga.org.uk/).
#
# The contained completion routines provide support for completing:
#
#    *) local and remote branch names
#    *) local and remote tag names
#    *) .git/remotes file names
#    *) git 'subcommands'
#    *) tree paths within 'ref:path/to/file' expressions
#
# To use these routines:
#
#    1) Copy this file to somewhere (e.g. ~/.git-completion.sh).
#    2) Added the following line to your .bashrc:
#        source ~/.git-completion.sh
#
#    3) Consider changing your PS1 to also show the current branch:
#        PS1='[\u@\h \W$(__git_ps1 " (%s)")]\$ '
#
#       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.
#
 
__gitdir ()
{
	echo "${__git_dir:-$(git rev-parse --git-dir 2>/dev/null)}"
}
 
__git_ps1 ()
{
	local b="$(git symbolic-ref HEAD 2>/dev/null)"
	if [ -n "$b" ]; then
		if [ -n "$1" ]; then
			printf "$1" "${b##refs/heads/}"
		else
			printf " (%s)" "${b##refs/heads/}"
		fi
	fi
}
 
__git_refs ()
{
	local cmd i is_hash=y dir="${1:-$(__gitdir)}"
	if [ -d "$dir" ]; then
		if [ -e "$dir/HEAD" ]; then echo HEAD; fi
		for i in $(git --git-dir="$dir" \
			for-each-ref --format='%(refname)' \
			refs/tags refs/heads refs/remotes); do
			case "$i" in
				refs/tags/*)    echo "${i#refs/tags/}" ;;
				refs/heads/*)   echo "${i#refs/heads/}" ;;
				refs/remotes/*) echo "${i#refs/remotes/}" ;;
				*)              echo "$i" ;;
			esac
		done
		return
	fi
	for i in $(git-ls-remote "$dir" 2>/dev/null); do
		case "$is_hash,$i" in
		y,*) is_hash=n ;;
		n,*^{}) is_hash=y ;;
		n,refs/tags/*) is_hash=y; echo "${i#refs/tags/}" ;;
		n,refs/heads/*) is_hash=y; echo "${i#refs/heads/}" ;;
		n,refs/remotes/*) is_hash=y; echo "${i#refs/remotes/}" ;;
		n,*) is_hash=y; echo "$i" ;;
		esac
	done
}
 
__git_refs2 ()
{
	local cmd i is_hash=y dir="${1:-$(__gitdir)}"
	if [ -d "$dir" ]; then
		cmd=git-peek-remote
	else
		cmd=git-ls-remote
	fi
	for i in $($cmd "$dir" 2>/dev/null); do
		case "$is_hash,$i" in
		y,*) is_hash=n ;;
		n,*^{}) is_hash=y ;;
		n,refs/tags/*) is_hash=y; echo "${i#refs/tags/}:${i#refs/tags/}" ;;
		n,refs/heads/*) is_hash=y; echo "${i#refs/heads/}:${i#refs/heads/}" ;;
		n,*) is_hash=y; echo "$i:$i" ;;
		esac
	done
}
 
__git_remotes ()
{
	local i ngoff IFS=$'\n' d="$(__gitdir)"
	shopt -q nullglob || ngoff=1
	shopt -s nullglob
	for i in "$d/remotes"/*; do
		echo ${i#$d/remotes/}
	done
	[ "$ngoff" ] && shopt -u nullglob
	for i in $(git --git-dir="$d" repo-config --list); do
		case "$i" in
		remote.*.url=*)
			i="${i#remote.}"
			echo "${i/.url=*/}"
			;;
		esac
	done
}
 
__git_merge_strategies ()
{
	sed -n "/^all_strategies='/{
		s/^all_strategies='//
		s/'//
		p
		q
		}" "$(git --exec-path)/git-merge"
}
 
__git_complete_file ()
{
	local pfx ls ref cur="${COMP_WORDS[COMP_CWORD]}"
	case "$cur" in
	?*:*)
		ref="${cur%%:*}"
		cur="${cur#*:}"
		case "$cur" in
		?*/*)
			pfx="${cur%/*}"
			cur="${cur##*/}"
			ls="$ref:$pfx"
			pfx="$pfx/"
			;;
		*)
			ls="$ref"
			;;
	    esac
		COMPREPLY=($(compgen -P "$pfx" \
			-W "$(git --git-dir="$(__gitdir)" ls-tree "$ls" \
				| sed '/^100... blob /s,^.*	,,
				       /^040000 tree /{
				           s,^.*	,,
				           s,$,/,
				       }
				       s/^.*	//')" \
			-- "$cur"))
		;;
	*)
		COMPREPLY=($(compgen -W "$(__git_refs)" -- "$cur"))
		;;
	esac
}
 
__git_complete_revlist ()
{
	local pfx cur="${COMP_WORDS[COMP_CWORD]}"
	case "$cur" in
	*...*)
		pfx="${cur%...*}..."
		cur="${cur#*...}"
		COMPREPLY=($(compgen -P "$pfx" -W "$(__git_refs)" -- "$cur"))
		;;
	*..*)
		pfx="${cur%..*}.."
		cur="${cur#*..}"
		COMPREPLY=($(compgen -P "$pfx" -W "$(__git_refs)" -- "$cur"))
		;;
	*)
		COMPREPLY=($(compgen -W "$(__git_refs)" -- "$cur"))
		;;
	esac
}
 
__git_commands ()
{
	local i IFS=" "$'\n'
	for i in $(git help -a|egrep '^ ')
	do
		case $i in
		check-ref-format) : plumbing;;
		commit-tree)      : plumbing;;
		convert-objects)  : plumbing;;
		cvsserver)        : daemon;;
		daemon)           : daemon;;
		fetch-pack)       : plumbing;;
		hash-object)      : plumbing;;
		http-*)           : transport;;
		index-pack)       : plumbing;;
		local-fetch)      : plumbing;;
		mailinfo)         : plumbing;;
		mailsplit)        : plumbing;;
		merge-*)          : plumbing;;
		mktree)           : plumbing;;
		mktag)            : plumbing;;
		pack-objects)     : plumbing;;
		pack-redundant)   : plumbing;;
		pack-refs)        : plumbing;;
		parse-remote)     : plumbing;;
		patch-id)         : plumbing;;
		peek-remote)      : plumbing;;
		read-tree)        : plumbing;;
		receive-pack)     : plumbing;;
		rerere)           : plumbing;;
		rev-list)         : plumbing;;
		rev-parse)        : plumbing;;
		runstatus)        : plumbing;;
		sh-setup)         : internal;;
		shell)            : daemon;;
		send-pack)        : plumbing;;
		show-index)       : plumbing;;
		ssh-*)            : transport;;
		stripspace)       : plumbing;;
		symbolic-ref)     : plumbing;;
		unpack-file)      : plumbing;;
		unpack-objects)   : plumbing;;
		update-ref)       : plumbing;;
		update-server-info) : daemon;;
		upload-archive)   : plumbing;;
		upload-pack)      : plumbing;;
		write-tree)       : plumbing;;
		*) echo $i;;
		esac
	done
}
 
__git_aliases ()
{
	local i IFS=$'\n'
	for i in $(git --git-dir="$(__gitdir)" repo-config --list); do
		case "$i" in
		alias.*)
			i="${i#alias.}"
			echo "${i/=*/}"
			;;
		esac
	done
}
 
__git_aliased_command ()
{
	local word cmdline=$(git --git-dir="$(__gitdir)" \
		repo-config --get "alias.$1")
	for word in $cmdline; do
		if [ "${word##-*}" ]; then
			echo $word
			return
		fi
	done
}
 
_git_branch ()
{
	local cur="${COMP_WORDS[COMP_CWORD]}"
	COMPREPLY=($(compgen -W "-l -f -d -D $(__git_refs)" -- "$cur"))
}
 
_git_cat_file ()
{
	local cur="${COMP_WORDS[COMP_CWORD]}"
	case "${COMP_WORDS[0]},$COMP_CWORD" in
	git-cat-file*,1)
		COMPREPLY=($(compgen -W "-p -t blob tree commit tag" -- "$cur"))
		;;
	git,2)
		COMPREPLY=($(compgen -W "-p -t blob tree commit tag" -- "$cur"))
		;;
	*)
		__git_complete_file
		;;
	esac
}
 
_git_checkout ()
{
	local cur="${COMP_WORDS[COMP_CWORD]}"
	COMPREPLY=($(compgen -W "-l -b $(__git_refs)" -- "$cur"))
}
 
_git_cherry_pick ()
{
	local cur="${COMP_WORDS[COMP_CWORD]}"
	case "$cur" in
	--*)
		COMPREPLY=($(compgen -W "
			--edit --no-commit
			" -- "$cur"))
		;;
	*)
		COMPREPLY=($(compgen -W "$(__git_refs)" -- "$cur"))
		;;
	esac
}
 
_git_diff ()
{
	__git_complete_file
}
 
_git_diff_tree ()
{
	local cur="${COMP_WORDS[COMP_CWORD]}"
	COMPREPLY=($(compgen -W "-r -p -M $(__git_refs)" -- "$cur"))
}
 
_git_fetch ()
{
	local cur="${COMP_WORDS[COMP_CWORD]}"
 
	case "${COMP_WORDS[0]},$COMP_CWORD" in
	git-fetch*,1)
		COMPREPLY=($(compgen -W "$(__git_remotes)" -- "$cur"))
		;;
	git,2)
		COMPREPLY=($(compgen -W "$(__git_remotes)" -- "$cur"))
		;;
	*)
		case "$cur" in
		*:*)
			cur="${cur#*:}"
			COMPREPLY=($(compgen -W "$(__git_refs)" -- "$cur"))
			;;
		*)
			local remote
			case "${COMP_WORDS[0]}" in
			git-fetch) remote="${COMP_WORDS[1]}" ;;
			git)       remote="${COMP_WORDS[2]}" ;;
			esac
			COMPREPLY=($(compgen -W "$(__git_refs2 "$remote")" -- "$cur"))
			;;
		esac
		;;
	esac
}
 
_git_format_patch ()
{
	local cur="${COMP_WORDS[COMP_CWORD]}"
	case "$cur" in
	--*)
		COMPREPLY=($(compgen -W "
			--stdout --attach --thread
			--output-directory
			--numbered --start-number
			--keep-subject
			--signoff
			--in-reply-to=
			--full-index --binary
			" -- "$cur"))
		return
		;;
	esac
	__git_complete_revlist
}
 
_git_ls_remote ()
{
	local cur="${COMP_WORDS[COMP_CWORD]}"
	COMPREPLY=($(compgen -W "$(__git_remotes)" -- "$cur"))
}
 
_git_ls_tree ()
{
	__git_complete_file
}
 
_git_log ()
{
	local cur="${COMP_WORDS[COMP_CWORD]}"
	case "$cur" in
	--pretty=*)
		COMPREPLY=($(compgen -W "
			oneline short medium full fuller email raw
			" -- "${cur##--pretty=}"))
		return
		;;
	--*)
		COMPREPLY=($(compgen -W "
			--max-count= --max-age= --since= --after=
			--min-age= --before= --until=
			--root --not --topo-order --date-order
			--no-merges
			--abbrev-commit --abbrev=
			--relative-date
			--author= --committer= --grep=
			--all-match
			--pretty= --name-status --name-only
			" -- "$cur"))
		return
		;;
	esac
	__git_complete_revlist
}
 
_git_merge ()
{
	local cur="${COMP_WORDS[COMP_CWORD]}"
	case "$cur" in
	--*)
		COMPREPLY=($(compgen -W "
			--no-commit --no-summary --squash --strategy
			" -- "$cur"))
		return
	esac
	case "${COMP_WORDS[COMP_CWORD-1]}" in
	-s|--strategy)
		COMPREPLY=($(compgen -W "$(__git_merge_strategies)" -- "$cur"))
		return
	esac
	COMPREPLY=($(compgen -W "$(__git_refs)" -- "$cur"))
}
 
_git_merge_base ()
{
	local cur="${COMP_WORDS[COMP_CWORD]}"
	COMPREPLY=($(compgen -W "$(__git_refs)" -- "$cur"))
}
 
_git_name_rev ()
{
	local cur="${COMP_WORDS[COMP_CWORD]}"
	COMPREPLY=($(compgen -W "--tags --all --stdin" -- "$cur"))
}
 
_git_pull ()
{
	local cur="${COMP_WORDS[COMP_CWORD]}"
 
	case "${COMP_WORDS[0]},$COMP_CWORD" in
	git-pull*,1)
		COMPREPLY=($(compgen -W "$(__git_remotes)" -- "$cur"))
		;;
	git,2)
		COMPREPLY=($(compgen -W "$(__git_remotes)" -- "$cur"))
		;;
	*)
		local remote
		case "${COMP_WORDS[0]}" in
		git-pull)  remote="${COMP_WORDS[1]}" ;;
		git)       remote="${COMP_WORDS[2]}" ;;
		esac
		COMPREPLY=($(compgen -W "$(__git_refs "$remote")" -- "$cur"))
		;;
	esac
}
 
_git_push ()
{
	local cur="${COMP_WORDS[COMP_CWORD]}"
 
	case "${COMP_WORDS[0]},$COMP_CWORD" in
	git-push*,1)
		COMPREPLY=($(compgen -W "$(__git_remotes)" -- "$cur"))
		;;
	git,2)
		COMPREPLY=($(compgen -W "$(__git_remotes)" -- "$cur"))
		;;
	*)
		case "$cur" in
		*:*)
			local remote
			case "${COMP_WORDS[0]}" in
			git-push)  remote="${COMP_WORDS[1]}" ;;
			git)       remote="${COMP_WORDS[2]}" ;;
			esac
			cur="${cur#*:}"
			COMPREPLY=($(compgen -W "$(__git_refs "$remote")" -- "$cur"))
			;;
		*)
			COMPREPLY=($(compgen -W "$(__git_refs2)" -- "$cur"))
			;;
		esac
		;;
	esac
}
 
_git_rebase ()
{
	local cur="${COMP_WORDS[COMP_CWORD]}"
	if [ -d .dotest ]; then
		COMPREPLY=($(compgen -W "
			--continue --skip --abort
			" -- "$cur"))
		return
	fi
	case "$cur" in
	--*)
		COMPREPLY=($(compgen -W "
			--onto --merge --strategy
			" -- "$cur"))
		return
	esac
	case "${COMP_WORDS[COMP_CWORD-1]}" in
	-s|--strategy)
		COMPREPLY=($(compgen -W "$(__git_merge_strategies)" -- "$cur"))
		return
	esac
	COMPREPLY=($(compgen -W "$(__git_refs)" -- "$cur"))
}
 
_git_reset ()
{
	local cur="${COMP_WORDS[COMP_CWORD]}"
	local opt="--mixed --hard --soft"
	COMPREPLY=($(compgen -W "$opt $(__git_refs)" -- "$cur"))
}
 
_git ()
{
	local i c=1 command __git_dir
 
	while [ $c -lt $COMP_CWORD ]; do
		i="${COMP_WORDS[c]}"
		case "$i" in
		--git-dir=*) __git_dir="${i#--git-dir=}" ;;
		--bare)      __git_dir="." ;;
		--version|--help|-p|--paginate) ;;
		*) command="$i"; break ;;
		esac
		c=$((++c))
	done
 
	if [ $c -eq $COMP_CWORD -a -z "$command" ]; then
		COMPREPLY=($(compgen -W "
			--git-dir= --version --exec-path
			$(__git_commands)
			$(__git_aliases)
			" -- "${COMP_WORDS[COMP_CWORD]}"))
		return;
	fi
 
	local expansion=$(__git_aliased_command "$command")
	[ "$expansion" ] && command="$expansion"
 
	case "$command" in
	branch)      _git_branch ;;
	cat-file)    _git_cat_file ;;
	checkout)    _git_checkout ;;
	cherry-pick) _git_cherry_pick ;;
	diff)        _git_diff ;;
	diff-tree)   _git_diff_tree ;;
	fetch)       _git_fetch ;;
	format-patch) _git_format_patch ;;
	log)         _git_log ;;
	ls-remote)   _git_ls_remote ;;
	ls-tree)     _git_ls_tree ;;
	merge)       _git_merge;;
	merge-base)  _git_merge_base ;;
	name-rev)    _git_name_rev ;;
	pull)        _git_pull ;;
	push)        _git_push ;;
	rebase)      _git_rebase ;;
	reset)       _git_reset ;;
	show)        _git_log ;;
	show-branch) _git_log ;;
	whatchanged) _git_log ;;
	*)           COMPREPLY=() ;;
	esac
}
 
_gitk ()
{
	local cur="${COMP_WORDS[COMP_CWORD]}"
	COMPREPLY=($(compgen -W "--all $(__git_refs)" -- "$cur"))
}
 
complete -o default -o nospace -F _git git
complete -o default            -F _gitk gitk
complete -o default            -F _git_branch git-branch
complete -o default -o nospace -F _git_cat_file git-cat-file
complete -o default            -F _git_checkout git-checkout
complete -o default            -F _git_cherry_pick git-cherry-pick
complete -o default -o nospace -F _git_diff git-diff
complete -o default            -F _git_diff_tree git-diff-tree
complete -o default -o nospace -F _git_fetch git-fetch
complete -o default -o nospace -F _git_format_patch git-format-patch
complete -o default -o nospace -F _git_log git-log
complete -o default            -F _git_ls_remote git-ls-remote
complete -o default -o nospace -F _git_ls_tree git-ls-tree
complete -o default            -F _git_merge git-merge
complete -o default            -F _git_merge_base git-merge-base
complete -o default            -F _git_name_rev git-name-rev
complete -o default -o nospace -F _git_pull git-pull
complete -o default -o nospace -F _git_push git-push
complete -o default            -F _git_rebase git-rebase
complete -o default            -F _git_reset git-reset
complete -o default            -F _git_log git-show
complete -o default -o nospace -F _git_log git-show-branch
complete -o default -o nospace -F _git_log git-whatchanged
 
# The following are necessary only for Cygwin, and only are needed
# when the user has tab-completed the executable name and consequently
# included the '.exe' suffix.
#
if [ Cygwin = "$(uname -o 2>/dev/null)" ]; then
complete -o default -o nospace -F _git git.exe
complete -o default            -F _git_branch git-branch.exe
complete -o default -o nospace -F _git_cat_file git-cat-file.exe
complete -o default -o nospace -F _git_diff git-diff.exe
complete -o default -o nospace -F _git_diff_tree git-diff-tree.exe
complete -o default -o nospace -F _git_format_patch git-format-patch.exe
complete -o default -o nospace -F _git_log git-log.exe
complete -o default -o nospace -F _git_ls_tree git-ls-tree.exe
complete -o default            -F _git_merge_base git-merge-base.exe
complete -o default            -F _git_name_rev git-name-rev.exe
complete -o default -o nospace -F _git_push git-push.exe
complete -o default -o nospace -F _git_log git-show.exe
complete -o default -o nospace -F _git_log git-show-branch.exe
complete -o default -o nospace -F _git_log git-whatchanged.exe
fi