bash completion: refactor --strategy completion

[thirdparty/git.git] / contrib / completion / git-completion.bash

#!bash
#
# bash completion support for core Git.
#
# Copyright (C) 2006,2007 Shawn O. Pearce <spearce@spearce.org>
# Conceptually based on gitcompletion (http://gitweb.hawaga.org.uk/).
# Distributed under the GNU General Public License, version 2.0.
#
# 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
#    *) common --long-options
#
# 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) You may want to make sure the git executable is available
#       in your PATH before this script is sourced, as some caching
#       is performed while the script loads.  If git isn't found
#       at source time then all lookups will be done on demand,
#       which may be slightly slower.
#
#    4) 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.
#
#       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.
#
# To submit patches:
#
#    *) Read Documentation/SubmittingPatches
#    *) Send all patches to the current maintainer:
#
#       "Shawn O. Pearce" <spearce@spearce.org>
#
#    *) Always CC the Git mailing list:
#
#       git@vger.kernel.org
#

case "$COMP_WORDBREAKS" in
*:*) : great ;;
*)   COMP_WORDBREAKS="$COMP_WORDBREAKS:"
esac

# __gitdir accepts 0 or 1 arguments (i.e., location)
# returns location of .git repo
__gitdir ()
{
	if [ -z "${1-}" ]; then
		if [ -n "${__git_dir-}" ]; then
			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
}

# __git_ps1 accepts 0 or 1 arguments (i.e., format string)
# returns text to add to bash PS1 prompt (includes branch name)
__git_ps1 ()
{
	local g="$(__gitdir)"
	if [ -n "$g" ]; then
		local r
		local b
		if [ -d "$g/rebase-apply" ]; then
			if [ -f "$g/rebase-apply/rebasing" ]; then
				r="|REBASE"
		elif [ -f "$g/rebase-apply/applying" ]; then
				r="|AM"
			else
				r="|AM/REBASE"
			fi
			b="$(git symbolic-ref HEAD 2>/dev/null)"
		elif [ -f "$g/rebase-merge/interactive" ]; then
			r="|REBASE-i"
			b="$(cat "$g/rebase-merge/head-name")"
		elif [ -d "$g/rebase-merge" ]; then
			r="|REBASE-m"
			b="$(cat "$g/rebase-merge/head-name")"
		elif [ -f "$g/MERGE_HEAD" ]; then
			r="|MERGING"
			b="$(git symbolic-ref HEAD 2>/dev/null)"
		else
			if [ -f "$g/BISECT_LOG" ]; then
				r="|BISECTING"
			fi
			if ! b="$(git symbolic-ref HEAD 2>/dev/null)"; then
				if ! b="$(git describe --exact-match HEAD 2>/dev/null)"; then
					if [ -r "$g/HEAD" ]; then
						b="$(cut -c1-7 "$g/HEAD")..."
					fi
				fi
			fi
		fi

		local w
		local i
		local c

		if [ "true" = "$(git rev-parse --is-inside-git-dir 2>/dev/null)" ]; then
			if [ "true" = "$(git config --bool core.bare 2>/dev/null)" ]; then
				c="BARE:"
			else
				b="GIT_DIR!"
			fi
		elif [ "true" = "$(git rev-parse --is-inside-work-tree 2>/dev/null)" ]; then
			if [ -n "${GIT_PS1_SHOWDIRTYSTATE-}" ]; then
				if [ "$(git config --bool bash.showDirtyState)" != "false" ]; then
					git diff --no-ext-diff --ignore-submodules \
						--quiet --exit-code || w="*"
					if git rev-parse --quiet --verify HEAD >/dev/null; then
						git diff-index --cached --quiet \
							--ignore-submodules HEAD -- || i="+"
					else
						i="#"
					fi
				fi
			fi
		fi

		if [ -n "$b" ]; then
			if [ -n "${1-}" ]; then
				printf "$1" "$c${b##refs/heads/}$w$i$r"
			else
				printf " (%s)" "$c${b##refs/heads/}$w$i$r"
			fi
		fi
	fi
}

# __gitcomp_1 requires 2 arguments
__gitcomp_1 ()
{
	local c IFS=' '$'\t'$'\n'
	for c in $1; do
		case "$c$2" in
		--*=*) printf %s$'\n' "$c$2" ;;
		*.)    printf %s$'\n' "$c$2" ;;
		*)     printf %s$'\n' "$c$2 " ;;
		esac
	done
}

# __gitcomp accepts 1, 2, 3, or 4 arguments
# generates completion reply with compgen
__gitcomp ()
{
	local cur="${COMP_WORDS[COMP_CWORD]}"
	if [ $# -gt 2 ]; then
		cur="$3"
	fi
	case "$cur" in
	--*=)
		COMPREPLY=()
		;;
	*)
		local IFS=$'\n'
		COMPREPLY=($(compgen -P "${2-}" \
			-W "$(__gitcomp_1 "${1-}" "${4-}")" \
			-- "$cur"))
		;;
	esac
}

# __git_heads accepts 0 or 1 arguments (to pass to __gitdir)
__git_heads ()
{
	local cmd i is_hash=y dir="$(__gitdir "${1-}")"
	if [ -d "$dir" ]; then
		git --git-dir="$dir" for-each-ref --format='%(refname:short)' \
			refs/heads
		return
	fi
	for i in $(git ls-remote "${1-}" 2>/dev/null); do
		case "$is_hash,$i" in
		y,*) is_hash=n ;;
		n,*^{}) is_hash=y ;;
		n,refs/heads/*) is_hash=y; echo "${i#refs/heads/}" ;;
		n,*) is_hash=y; echo "$i" ;;
		esac
	done
}

# __git_tags accepts 0 or 1 arguments (to pass to __gitdir)
__git_tags ()
{
	local cmd i is_hash=y dir="$(__gitdir "${1-}")"
	if [ -d "$dir" ]; then
		git --git-dir="$dir" for-each-ref --format='%(refname:short)' \
			refs/tags
		return
	fi
	for i in $(git ls-remote "${1-}" 2>/dev/null); do
		case "$is_hash,$i" in
		y,*) is_hash=n ;;
		n,*^{}) is_hash=y ;;
		n,refs/tags/*) is_hash=y; echo "${i#refs/tags/}" ;;
		n,*) is_hash=y; echo "$i" ;;
		esac
	done
}

# __git_refs accepts 0 or 1 arguments (to pass to __gitdir)
__git_refs ()
{
	local i is_hash=y dir="$(__gitdir "${1-}")"
	local cur="${COMP_WORDS[COMP_CWORD]}" format refs
	if [ -d "$dir" ]; then
		case "$cur" in
		refs|refs/*)
			format="refname"
			refs="${cur%/*}"
			;;
		*)
			if [ -e "$dir/HEAD" ]; then echo HEAD; fi
			format="refname:short"
			refs="refs/tags refs/heads refs/remotes"
			;;
		esac
		git --git-dir="$dir" for-each-ref --format="%($format)" \
			$refs
		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 requires 1 argument (to pass to __git_refs)
__git_refs2 ()
{
	local i
	for i in $(__git_refs "$1"); do
		echo "$i:$i"
	done
}

# __git_refs_remotes requires 1 argument (to pass to ls-remote)
__git_refs_remotes ()
{
	local cmd i is_hash=y
	for i in $(git ls-remote "$1" 2>/dev/null); do
		case "$is_hash,$i" in
		n,refs/heads/*)
			is_hash=y
			echo "$i:refs/remotes/$1/${i#refs/heads/}"
			;;
		y,*) is_hash=n ;;
		n,*^{}) is_hash=y ;;
		n,refs/tags/*) is_hash=y;;
		n,*) is_hash=y; ;;
		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" config --list); do
		case "$i" in
		remote.*.url=*)
			i="${i#remote.}"
			echo "${i/.url=*/}"
			;;
		esac
	done
}

__git_merge_strategies ()
{
	if [ -n "${__git_merge_strategylist-}" ]; then
		echo "$__git_merge_strategylist"
		return
	fi
	git merge -s help 2>&1 |
	sed -n -e '/[Aa]vailable strategies are: /,/^$/{
		s/\.$//
		s/.*://
		s/^[ 	]*//
		s/[ 	]*$//
		p
	}'
}
__git_merge_strategylist=
__git_merge_strategylist=$(__git_merge_strategies 2>/dev/null)

__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

		case "$COMP_WORDBREAKS" in
		*:*) : great ;;
		*)   pfx="$ref:$pfx" ;;
		esac

		local IFS=$'\n'
		COMPREPLY=($(compgen -P "$pfx" \
			-W "$(git --git-dir="$(__gitdir)" ls-tree "$ls" \
				| sed '/^100... blob /{
				           s,^.*	,,
				           s,$, ,
				       }
				       /^120000 blob /{
				           s,^.*	,,
				           s,$, ,
				       }
				       /^040000 tree /{
				           s,^.*	,,
				           s,$,/,
				       }
				       s/^.*	//')" \
			-- "$cur"))
		;;
	*)
		__gitcomp "$(__git_refs)"
		;;
	esac
}

__git_complete_revlist ()
{
	local pfx cur="${COMP_WORDS[COMP_CWORD]}"
	case "$cur" in
	*...*)
		pfx="${cur%...*}..."
		cur="${cur#*...}"
		__gitcomp "$(__git_refs)" "$pfx" "$cur"
		;;
	*..*)
		pfx="${cur%..*}.."
		cur="${cur#*..}"
		__gitcomp "$(__git_refs)" "$pfx" "$cur"
		;;
	*)
		__gitcomp "$(__git_refs)"
		;;
	esac
}

__git_complete_remote_or_refspec ()
{
	local cmd="${COMP_WORDS[1]}"
	local cur="${COMP_WORDS[COMP_CWORD]}"
	local i c=2 remote="" pfx="" lhs=1
	while [ $c -lt $COMP_CWORD ]; do
		i="${COMP_WORDS[c]}"
		case "$i" in
		-*) ;;
		*) remote="$i"; break ;;
		esac
		c=$((++c))
	done
	if [ -z "$remote" ]; then
		__gitcomp "$(__git_remotes)"
		return
	fi
	[ "$remote" = "." ] && remote=
	case "$cur" in
	*:*)
		case "$COMP_WORDBREAKS" in
		*:*) : great ;;
		*)   pfx="${cur%%:*}:" ;;
		esac
		cur="${cur#*:}"
		lhs=0
		;;
	+*)
		pfx="+"
		cur="${cur#+}"
		;;
	esac
	case "$cmd" in
	fetch)
		if [ $lhs = 1 ]; then
			__gitcomp "$(__git_refs2 "$remote")" "$pfx" "$cur"
		else
			__gitcomp "$(__git_refs)" "$pfx" "$cur"
		fi
		;;
	pull)
		if [ $lhs = 1 ]; then
			__gitcomp "$(__git_refs "$remote")" "$pfx" "$cur"
		else
			__gitcomp "$(__git_refs)" "$pfx" "$cur"
		fi
		;;
	push)
		if [ $lhs = 1 ]; then
			__gitcomp "$(__git_refs)" "$pfx" "$cur"
		else
			__gitcomp "$(__git_refs "$remote")" "$pfx" "$cur"
		fi
		;;
	esac
}

__git_complete_strategy ()
{
	case "${COMP_WORDS[COMP_CWORD-1]}" in
	-s|--strategy)
		__gitcomp "$(__git_merge_strategies)"
		return 0
	esac
	local cur="${COMP_WORDS[COMP_CWORD]}"
	case "$cur" in
	--strategy=*)
		__gitcomp "$(__git_merge_strategies)" "" "${cur##--strategy=}"
		return 0
		;;
	esac
	return 1
}

__git_all_commands ()
{
	if [ -n "${__git_all_commandlist-}" ]; then
		echo "$__git_all_commandlist"
		return
	fi
	local i IFS=" "$'\n'
	for i in $(git help -a|egrep '^ ')
	do
		case $i in
		*--*)             : helper pattern;;
		*) echo $i;;
		esac
	done
}
__git_all_commandlist=
__git_all_commandlist="$(__git_all_commands 2>/dev/null)"

__git_porcelain_commands ()
{
	if [ -n "${__git_porcelain_commandlist-}" ]; then
		echo "$__git_porcelain_commandlist"
		return
	fi
	local i IFS=" "$'\n'
	for i in "help" $(__git_all_commands)
	do
		case $i in
		*--*)             : helper pattern;;
		applymbox)        : ask gittus;;
		applypatch)       : ask gittus;;
		archimport)       : import;;
		cat-file)         : plumbing;;
		check-attr)       : plumbing;;
		check-ref-format) : plumbing;;
		checkout-index)   : plumbing;;
		commit-tree)      : plumbing;;
		count-objects)    : infrequent;;
		cvsexportcommit)  : export;;
		cvsimport)        : import;;
		cvsserver)        : daemon;;
		daemon)           : daemon;;
		diff-files)       : plumbing;;
		diff-index)       : plumbing;;
		diff-tree)        : plumbing;;
		fast-import)      : import;;
		fast-export)      : export;;
		fsck-objects)     : plumbing;;
		fetch-pack)       : plumbing;;
		fmt-merge-msg)    : plumbing;;
		for-each-ref)     : plumbing;;
		hash-object)      : plumbing;;
		http-*)           : transport;;
		index-pack)       : plumbing;;
		init-db)          : deprecated;;
		local-fetch)      : plumbing;;
		lost-found)       : infrequent;;
		ls-files)         : plumbing;;
		ls-remote)        : plumbing;;
		ls-tree)          : 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;;
		prune)            : plumbing;;
		prune-packed)     : plumbing;;
		quiltimport)      : import;;
		read-tree)        : plumbing;;
		receive-pack)     : plumbing;;
		reflog)           : plumbing;;
		repo-config)      : deprecated;;
		rerere)           : plumbing;;
		rev-list)         : plumbing;;
		rev-parse)        : plumbing;;
		runstatus)        : plumbing;;
		sh-setup)         : internal;;
		shell)            : daemon;;
		show-ref)         : plumbing;;
		send-pack)        : plumbing;;
		show-index)       : plumbing;;
		ssh-*)            : transport;;
		stripspace)       : plumbing;;
		symbolic-ref)     : plumbing;;
		tar-tree)         : deprecated;;
		unpack-file)      : plumbing;;
		unpack-objects)   : plumbing;;
		update-index)     : plumbing;;
		update-ref)       : plumbing;;
		update-server-info) : daemon;;
		upload-archive)   : plumbing;;
		upload-pack)      : plumbing;;
		write-tree)       : plumbing;;
		var)              : infrequent;;
		verify-pack)      : infrequent;;
		verify-tag)       : plumbing;;
		*) echo $i;;
		esac
	done
}
__git_porcelain_commandlist=
__git_porcelain_commandlist="$(__git_porcelain_commands 2>/dev/null)"

__git_aliases ()
{
	local i IFS=$'\n'
	for i in $(git --git-dir="$(__gitdir)" config --list); do
		case "$i" in
		alias.*)
			i="${i#alias.}"
			echo "${i/=*/}"
			;;
		esac
	done
}

# __git_aliased_command requires 1 argument
__git_aliased_command ()
{
	local word cmdline=$(git --git-dir="$(__gitdir)" \
		config --get "alias.$1")
	for word in $cmdline; do
		if [ "${word##-*}" ]; then
			echo $word
			return
		fi
	done
}

# __git_find_subcommand requires 1 argument
__git_find_subcommand ()
{
	local word subcommand c=1

	while [ $c -lt $COMP_CWORD ]; do
		word="${COMP_WORDS[c]}"
		for subcommand in $1; do
			if [ "$subcommand" = "$word" ]; then
				echo "$subcommand"
				return
			fi
		done
		c=$((++c))
	done
}

__git_has_doubledash ()
{
	local c=1
	while [ $c -lt $COMP_CWORD ]; do
		if [ "--" = "${COMP_WORDS[c]}" ]; then
			return 0
		fi
		c=$((++c))
	done
	return 1
}

__git_whitespacelist="nowarn warn error error-all fix"

_git_am ()
{
	local cur="${COMP_WORDS[COMP_CWORD]}" dir="$(__gitdir)"
	if [ -d "$dir"/rebase-apply ]; then
		__gitcomp "--skip --resolved --abort"
		return
	fi
	case "$cur" in
	--whitespace=*)
		__gitcomp "$__git_whitespacelist" "" "${cur##--whitespace=}"
		return
		;;
	--*)
		__gitcomp "
			--signoff --utf8 --binary --3way --interactive
			--whitespace=
			"
		return
	esac
	COMPREPLY=()
}

_git_apply ()
{
	local cur="${COMP_WORDS[COMP_CWORD]}"
	case "$cur" in
	--whitespace=*)
		__gitcomp "$__git_whitespacelist" "" "${cur##--whitespace=}"
		return
		;;
	--*)
		__gitcomp "
			--stat --numstat --summary --check --index
			--cached --index-info --reverse --reject --unidiff-zero
			--apply --no-add --exclude=
			--whitespace= --inaccurate-eof --verbose
			"
		return
	esac
	COMPREPLY=()
}

_git_add ()
{
	__git_has_doubledash && return

	local cur="${COMP_WORDS[COMP_CWORD]}"
	case "$cur" in
	--*)
		__gitcomp "
			--interactive --refresh --patch --update --dry-run
			--ignore-errors --intent-to-add
			"
		return
	esac
	COMPREPLY=()
}

_git_archive ()
{
	local cur="${COMP_WORDS[COMP_CWORD]}"
	case "$cur" in
	--format=*)
		__gitcomp "$(git archive --list)" "" "${cur##--format=}"
		return
		;;
	--remote=*)
		__gitcomp "$(__git_remotes)" "" "${cur##--remote=}"
		return
		;;
	--*)
		__gitcomp "
			--format= --list --verbose
			--prefix= --remote= --exec=
			"
		return
		;;
	esac
	__git_complete_file
}

_git_bisect ()
{
	__git_has_doubledash && return

	local subcommands="start bad good skip reset visualize replay log run"
	local subcommand="$(__git_find_subcommand "$subcommands")"
	if [ -z "$subcommand" ]; then
		__gitcomp "$subcommands"
		return
	fi

	case "$subcommand" in
	bad|good|reset|skip)
		__gitcomp "$(__git_refs)"
		;;
	*)
		COMPREPLY=()
		;;
	esac
}

_git_branch ()
{
	local i c=1 only_local_ref="n" has_r="n"

	while [ $c -lt $COMP_CWORD ]; do
		i="${COMP_WORDS[c]}"
		case "$i" in
		-d|-m)	only_local_ref="y" ;;
		-r)	has_r="y" ;;
		esac
		c=$((++c))
	done

	case "${COMP_WORDS[COMP_CWORD]}" in
	--*)
		__gitcomp "
			--color --no-color --verbose --abbrev= --no-abbrev
			--track --no-track --contains --merged --no-merged
			"
		;;
	*)
		if [ $only_local_ref = "y" -a $has_r = "n" ]; then
			__gitcomp "$(__git_heads)"
		else
			__gitcomp "$(__git_refs)"
		fi
		;;
	esac
}

_git_bundle ()
{
	local cmd="${COMP_WORDS[2]}"
	case "$COMP_CWORD" in
	2)
		__gitcomp "create list-heads verify unbundle"
		;;
	3)
		# looking for a file
		;;
	*)
		case "$cmd" in
			create)
				__git_complete_revlist
			;;
		esac
		;;
	esac
}

_git_checkout ()
{
	__git_has_doubledash && return

	__gitcomp "$(__git_refs)"
}

_git_cherry ()
{
	__gitcomp "$(__git_refs)"
}

_git_cherry_pick ()
{
	local cur="${COMP_WORDS[COMP_CWORD]}"
	case "$cur" in
	--*)
		__gitcomp "--edit --no-commit"
		;;
	*)
		__gitcomp "$(__git_refs)"
		;;
	esac
}

_git_clean ()
{
	__git_has_doubledash && return

	local cur="${COMP_WORDS[COMP_CWORD]}"
	case "$cur" in
	--*)
		__gitcomp "--dry-run --quiet"
		return
		;;
	esac
	COMPREPLY=()
}

_git_clone ()
{
	local cur="${COMP_WORDS[COMP_CWORD]}"
	case "$cur" in
	--*)
		__gitcomp "
			--local
			--no-hardlinks
			--shared
			--reference
			--quiet
			--no-checkout
			--bare
			--mirror
			--origin
			--upload-pack
			--template=
			--depth
			"
		return
		;;
	esac
	COMPREPLY=()
}

_git_commit ()
{
	__git_has_doubledash && return

	local cur="${COMP_WORDS[COMP_CWORD]}"
	case "$cur" in
	--*)
		__gitcomp "
			--all --author= --signoff --verify --no-verify
			--edit --amend --include --only --interactive
			"
		return
	esac
	COMPREPLY=()
}

_git_describe ()
{
	local cur="${COMP_WORDS[COMP_CWORD]}"
	case "$cur" in
	--*)
		__gitcomp "
			--all --tags --contains --abbrev= --candidates=
			--exact-match --debug --long --match --always
			"
		return
	esac
	__gitcomp "$(__git_refs)"
}

__git_diff_common_options="--stat --numstat --shortstat --summary
			--patch-with-stat --name-only --name-status --color
			--no-color --color-words --no-renames --check
			--full-index --binary --abbrev --diff-filter=
			--find-copies-harder
			--text --ignore-space-at-eol --ignore-space-change
			--ignore-all-space --exit-code --quiet --ext-diff
			--no-ext-diff
			--no-prefix --src-prefix= --dst-prefix=
			--inter-hunk-context=
			--patience
			--raw
"

_git_diff ()
{
	__git_has_doubledash && return

	local cur="${COMP_WORDS[COMP_CWORD]}"
	case "$cur" in
	--*)
		__gitcomp "--cached --pickaxe-all --pickaxe-regex
			--base --ours --theirs
			$__git_diff_common_options
			"
		return
		;;
	esac
	__git_complete_file
}

_git_fetch ()
{
	__git_complete_remote_or_refspec
}

_git_format_patch ()
{
	local cur="${COMP_WORDS[COMP_CWORD]}"
	case "$cur" in
	--*)
		__gitcomp "
			--stdout --attach --thread
			--output-directory
			--numbered --start-number
			--numbered-files
			--keep-subject
			--signoff
			--in-reply-to=
			--full-index --binary
			--not --all
			--cover-letter
			--no-prefix --src-prefix= --dst-prefix=
			--inline --suffix= --ignore-if-in-upstream
			--subject-prefix=
			"
		return
		;;
	esac
	__git_complete_revlist
}

_git_gc ()
{
	local cur="${COMP_WORDS[COMP_CWORD]}"
	case "$cur" in
	--*)
		__gitcomp "--prune --aggressive"
		return
		;;
	esac
	COMPREPLY=()
}

_git_grep ()
{
	__git_has_doubledash && return

	local cur="${COMP_WORDS[COMP_CWORD]}"
	case "$cur" in
	--*)
		__gitcomp "
			--cached
			--text --ignore-case --word-regexp --invert-match
			--full-name
			--extended-regexp --basic-regexp --fixed-strings
			--files-with-matches --name-only
			--files-without-match
			--count
			--and --or --not --all-match
			"
		return
		;;
	esac
	COMPREPLY=()
}

_git_help ()
{
	local cur="${COMP_WORDS[COMP_CWORD]}"
	case "$cur" in
	--*)
		__gitcomp "--all --info --man --web"
		return
		;;
	esac
	__gitcomp "$(__git_all_commands)
		attributes cli core-tutorial cvs-migration
		diffcore gitk glossary hooks ignore modules
		repository-layout tutorial tutorial-2
		workflows
		"
}

_git_init ()
{
	local cur="${COMP_WORDS[COMP_CWORD]}"
	case "$cur" in
	--shared=*)
		__gitcomp "
			false true umask group all world everybody
			" "" "${cur##--shared=}"
		return
		;;
	--*)
		__gitcomp "--quiet --bare --template= --shared --shared="
		return
		;;
	esac
	COMPREPLY=()
}

_git_ls_files ()
{
	__git_has_doubledash && return

	local cur="${COMP_WORDS[COMP_CWORD]}"
	case "$cur" in
	--*)
		__gitcomp "--cached --deleted --modified --others --ignored
			--stage --directory --no-empty-directory --unmerged
			--killed --exclude= --exclude-from=
			--exclude-per-directory= --exclude-standard
			--error-unmatch --with-tree= --full-name
			--abbrev --ignored --exclude-per-directory
			"
		return
		;;
	esac
	COMPREPLY=()
}

_git_ls_remote ()
{
	__gitcomp "$(__git_remotes)"
}

_git_ls_tree ()
{
	__git_complete_file
}

# Options that go well for log, shortlog and gitk
__git_log_common_options="
	--not --all
	--branches --tags --remotes
	--first-parent --no-merges
	--max-count=
	--max-age= --since= --after=
	--min-age= --until= --before=
"
# Options that go well for log and gitk (not shortlog)
__git_log_gitk_options="
	--dense --sparse --full-history
	--simplify-merges --simplify-by-decoration
	--left-right
"
# Options that go well for log and shortlog (not gitk)
__git_log_shortlog_options="
	--author= --committer= --grep=
	--all-match
"

__git_log_pretty_formats="oneline short medium full fuller email raw format:"

_git_log ()
{
	__git_has_doubledash && return

	local cur="${COMP_WORDS[COMP_CWORD]}"
	local g="$(git rev-parse --git-dir 2>/dev/null)"
	local merge=""
	if [ -f $g/MERGE_HEAD ]; then
		merge="--merge"
	fi
	case "$cur" in
	--pretty=*)
		__gitcomp "$__git_log_pretty_formats
			" "" "${cur##--pretty=}"
		return
		;;
	--format=*)
		__gitcomp "$__git_log_pretty_formats
			" "" "${cur##--format=}"
		return
		;;
	--date=*)
		__gitcomp "
			relative iso8601 rfc2822 short local default
		" "" "${cur##--date=}"
		return
		;;
	--*)
		__gitcomp "
			$__git_log_common_options
			$__git_log_shortlog_options
			$__git_log_gitk_options
			--root --topo-order --date-order --reverse
			--follow
			--abbrev-commit --abbrev=
			--relative-date --date=
			--pretty= --format= --oneline
			--cherry-pick
			--graph
			--decorate
			--walk-reflogs
			--parents --children
			$merge
			$__git_diff_common_options
			--pickaxe-all --pickaxe-regex
			"
		return
		;;
	esac
	__git_complete_revlist
}

_git_merge ()
{
	__git_complete_strategy && return

	local cur="${COMP_WORDS[COMP_CWORD]}"
	case "$cur" in
	--*)
		__gitcomp "
			--no-commit --no-stat --log --no-log --squash --strategy
			--commit --stat --no-squash --ff --no-ff
			"
		return
	esac
	__gitcomp "$(__git_refs)"
}

_git_mergetool ()
{
	local cur="${COMP_WORDS[COMP_CWORD]}"
	case "$cur" in
	--tool=*)
		__gitcomp "
			kdiff3 tkdiff meld xxdiff emerge
			vimdiff gvimdiff ecmerge opendiff
			" "" "${cur##--tool=}"
		return
		;;
	--*)
		__gitcomp "--tool="
		return
		;;
	esac
	COMPREPLY=()
}

_git_merge_base ()
{
	__gitcomp "$(__git_refs)"
}

_git_mv ()
{
	local cur="${COMP_WORDS[COMP_CWORD]}"
	case "$cur" in
	--*)
		__gitcomp "--dry-run"
		return
		;;
	esac
	COMPREPLY=()
}

_git_name_rev ()
{
	__gitcomp "--tags --all --stdin"
}

_git_pull ()
{
	__git_complete_remote_or_refspec
}

_git_push ()
{
	__git_complete_remote_or_refspec
}

_git_rebase ()
{
	local cur="${COMP_WORDS[COMP_CWORD]}" dir="$(__gitdir)"
	if [ -d "$dir"/rebase-apply ] || [ -d "$dir"/rebase-merge ]; then
		__gitcomp "--continue --skip --abort"
		return
	fi
	__git_complete_strategy && return
	case "$cur" in
	--*)
		__gitcomp "--onto --merge --strategy --interactive"
		return
	esac
	__gitcomp "$(__git_refs)"
}

_git_send_email ()
{
	local cur="${COMP_WORDS[COMP_CWORD]}"
	case "$cur" in
	--*)
		__gitcomp "--bcc --cc --cc-cmd --chain-reply-to --compose
			--dry-run --envelope-sender --from --identity
			--in-reply-to --no-chain-reply-to --no-signed-off-by-cc
			--no-suppress-from --no-thread --quiet
			--signed-off-by-cc --smtp-pass --smtp-server
			--smtp-server-port --smtp-ssl --smtp-user --subject
			--suppress-cc --suppress-from --thread --to
			--validate --no-validate"
		return
		;;
	esac
	COMPREPLY=()
}

_git_config ()
{
	local cur="${COMP_WORDS[COMP_CWORD]}"
	local prv="${COMP_WORDS[COMP_CWORD-1]}"
	case "$prv" in
	branch.*.remote)
		__gitcomp "$(__git_remotes)"
		return
		;;
	branch.*.merge)
		__gitcomp "$(__git_refs)"
		return
		;;
	remote.*.fetch)
		local remote="${prv#remote.}"
		remote="${remote%.fetch}"
		__gitcomp "$(__git_refs_remotes "$remote")"
		return
		;;
	remote.*.push)
		local remote="${prv#remote.}"
		remote="${remote%.push}"
		__gitcomp "$(git --git-dir="$(__gitdir)" \
			for-each-ref --format='%(refname):%(refname)' \
			refs/heads)"
		return
		;;
	pull.twohead|pull.octopus)
		__gitcomp "$(__git_merge_strategies)"
		return
		;;
	color.branch|color.diff|color.interactive|color.status|color.ui)
		__gitcomp "always never auto"
		return
		;;
	color.pager)
		__gitcomp "false true"
		return
		;;
	color.*.*)
		__gitcomp "
			normal black red green yellow blue magenta cyan white
			bold dim ul blink reverse
			"
		return
		;;
	*.*)
		COMPREPLY=()
		return
		;;
	esac
	case "$cur" in
	--*)
		__gitcomp "
			--global --system --file=
			--list --replace-all
			--get --get-all --get-regexp
			--add --unset --unset-all
			--remove-section --rename-section
			"
		return
		;;
	branch.*.*)
		local pfx="${cur%.*}."
		cur="${cur##*.}"
		__gitcomp "remote merge mergeoptions" "$pfx" "$cur"
		return
		;;
	branch.*)
		local pfx="${cur%.*}."
		cur="${cur#*.}"
		__gitcomp "$(__git_heads)" "$pfx" "$cur" "."
		return
		;;
	remote.*.*)
		local pfx="${cur%.*}."
		cur="${cur##*.}"
		__gitcomp "
			url proxy fetch push mirror skipDefaultUpdate
			receivepack uploadpack tagopt
			" "$pfx" "$cur"
		return
		;;
	remote.*)
		local pfx="${cur%.*}."
		cur="${cur#*.}"
		__gitcomp "$(__git_remotes)" "$pfx" "$cur" "."
		return
		;;
	esac
	__gitcomp "
		apply.whitespace
		branch.autosetupmerge
		branch.autosetuprebase
		clean.requireForce
		color.branch
		color.branch.current
		color.branch.local
		color.branch.plain
		color.branch.remote
		color.diff
		color.diff.commit
		color.diff.frag
		color.diff.meta
		color.diff.new
		color.diff.old
		color.diff.plain
		color.diff.whitespace
		color.interactive
		color.interactive.header
		color.interactive.help
		color.interactive.prompt
		color.pager
		color.status
		color.status.added
		color.status.changed
		color.status.header
		color.status.nobranch
		color.status.untracked
		color.status.updated
		color.ui
		commit.template
		core.autocrlf
		core.bare
		core.compression
		core.deltaBaseCacheLimit
		core.editor
		core.excludesfile
		core.fileMode
		core.fsyncobjectfiles
		core.gitProxy
		core.ignoreCygwinFSTricks
		core.ignoreStat
		core.logAllRefUpdates
		core.loosecompression
		core.packedGitLimit
		core.packedGitWindowSize
		core.pager
		core.preferSymlinkRefs
		core.preloadindex
		core.quotepath
		core.repositoryFormatVersion
		core.safecrlf
		core.sharedRepository
		core.symlinks
		core.trustctime
		core.warnAmbiguousRefs
		core.whitespace
		core.worktree
		diff.autorefreshindex
		diff.external
		diff.mnemonicprefix
		diff.renameLimit
		diff.renameLimit.
		diff.renames
		fetch.unpackLimit
		format.headers
		format.numbered
		format.pretty
		format.suffix
		gc.aggressiveWindow
		gc.auto
		gc.autopacklimit
		gc.packrefs
		gc.pruneexpire
		gc.reflogexpire
		gc.reflogexpireunreachable
		gc.rerereresolved
		gc.rerereunresolved
		gitcvs.allbinary
		gitcvs.dbTableNamePrefix
		gitcvs.dbdriver
		gitcvs.dbname
		gitcvs.dbpass
		gitcvs.dbuser
		gitcvs.enabled
		gitcvs.logfile
		gitcvs.usecrlfattr
		gui.blamehistoryctx
		gui.commitmsgwidth
		gui.copyblamethreshold
		gui.diffcontext
		gui.encoding
		gui.fastcopyblame
		gui.matchtrackingbranch
		gui.newbranchtemplate
		gui.pruneduringfetch
		gui.spellingdictionary
		gui.trustmtime
		help.autocorrect
		help.browser
		help.format
		http.lowSpeedLimit
		http.lowSpeedTime
		http.maxRequests
		http.noEPSV
		http.proxy
		http.sslCAInfo
		http.sslCAPath
		http.sslCert
		http.sslKey
		http.sslVerify
		i18n.commitEncoding
		i18n.logOutputEncoding
		instaweb.browser
		instaweb.httpd
		instaweb.local
		instaweb.modulepath
		instaweb.port
		log.date
		log.showroot
		man.viewer
		merge.conflictstyle
		merge.log
		merge.renameLimit
		merge.stat
		merge.tool
		merge.verbosity
		mergetool.keepBackup
		pack.compression
		pack.deltaCacheLimit
		pack.deltaCacheSize
		pack.depth
		pack.indexVersion
		pack.packSizeLimit
		pack.threads
		pack.window
		pack.windowMemory
		pull.octopus
		pull.twohead
		receive.denyCurrentBranch
		receive.denyDeletes
		receive.denyNonFastForwards
		receive.fsckObjects
		receive.unpackLimit
		repack.usedeltabaseoffset
		rerere.autoupdate
		rerere.enabled
		showbranch.default
		status.relativePaths
		status.showUntrackedFiles
		tar.umask
		transfer.unpackLimit
		user.email
		user.name
		user.signingkey
		web.browser
		branch. remote.
	"
}

_git_remote ()
{
	local subcommands="add rename rm show prune update"
	local subcommand="$(__git_find_subcommand "$subcommands")"
	if [ -z "$subcommand" ]; then
		__gitcomp "$subcommands"
		return
	fi

	case "$subcommand" in
	rename|rm|show|prune)
		__gitcomp "$(__git_remotes)"
		;;
	update)
		local i c='' IFS=$'\n'
		for i in $(git --git-dir="$(__gitdir)" config --list); do
			case "$i" in
			remotes.*)
				i="${i#remotes.}"
				c="$c ${i/=*/}"
				;;
			esac
		done
		__gitcomp "$c"
		;;
	*)
		COMPREPLY=()
		;;
	esac
}

_git_reset ()
{
	__git_has_doubledash && return

	local cur="${COMP_WORDS[COMP_CWORD]}"
	case "$cur" in
	--*)
		__gitcomp "--merge --mixed --hard --soft"
		return
		;;
	esac
	__gitcomp "$(__git_refs)"
}

_git_revert ()
{
	local cur="${COMP_WORDS[COMP_CWORD]}"
	case "$cur" in
	--*)
		__gitcomp "--edit --mainline --no-edit --no-commit --signoff"
		return
		;;
	esac
	__gitcomp "$(__git_refs)"
}

_git_rm ()
{
	__git_has_doubledash && return

	local cur="${COMP_WORDS[COMP_CWORD]}"
	case "$cur" in
	--*)
		__gitcomp "--cached --dry-run --ignore-unmatch --quiet"
		return
		;;
	esac
	COMPREPLY=()
}

_git_shortlog ()
{
	__git_has_doubledash && return

	local cur="${COMP_WORDS[COMP_CWORD]}"
	case "$cur" in
	--*)
		__gitcomp "
			$__git_log_common_options
			$__git_log_shortlog_options
			--numbered --summary
			"
		return
		;;
	esac
	__git_complete_revlist
}

_git_show ()
{
	__git_has_doubledash && return

	local cur="${COMP_WORDS[COMP_CWORD]}"
	case "$cur" in
	--pretty=*)
		__gitcomp "$__git_log_pretty_formats
			" "" "${cur##--pretty=}"
		return
		;;
	--format=*)
		__gitcomp "$__git_log_pretty_formats
			" "" "${cur##--format=}"
		return
		;;
	--*)
		__gitcomp "--pretty= --format=
			$__git_diff_common_options
			"
		return
		;;
	esac
	__git_complete_file
}

_git_show_branch ()
{
	local cur="${COMP_WORDS[COMP_CWORD]}"
	case "$cur" in
	--*)
		__gitcomp "
			--all --remotes --topo-order --current --more=
			--list --independent --merge-base --no-name
			--sha1-name --topics --reflog
			"
		return
		;;
	esac
	__git_complete_revlist
}

_git_stash ()
{
	local subcommands='save list show apply clear drop pop create branch'
	local subcommand="$(__git_find_subcommand "$subcommands")"
	if [ -z "$subcommand" ]; then
		__gitcomp "$subcommands"
	else
		local cur="${COMP_WORDS[COMP_CWORD]}"
		case "$subcommand,$cur" in
		save,--*)
			__gitcomp "--keep-index"
			;;
		apply,--*)
			__gitcomp "--index"
			;;
		show,--*|drop,--*|pop,--*|branch,--*)
			COMPREPLY=()
			;;
		show,*|apply,*|drop,*|pop,*|branch,*)
			__gitcomp "$(git --git-dir="$(__gitdir)" stash list \
					| sed -n -e 's/:.*//p')"
			;;
		*)
			COMPREPLY=()
			;;
		esac
	fi
}

_git_submodule ()
{
	__git_has_doubledash && return

	local subcommands="add status init update summary foreach sync"
	if [ -z "$(__git_find_subcommand "$subcommands")" ]; then
		local cur="${COMP_WORDS[COMP_CWORD]}"
		case "$cur" in
		--*)
			__gitcomp "--quiet --cached"
			;;
		*)
			__gitcomp "$subcommands"
			;;
		esac
		return
	fi
}

_git_svn ()
{
	local subcommands="
		init fetch clone rebase dcommit log find-rev
		set-tree commit-diff info create-ignore propget
		proplist show-ignore show-externals branch tag blame
		migrate
		"
	local subcommand="$(__git_find_subcommand "$subcommands")"
	if [ -z "$subcommand" ]; then
		__gitcomp "$subcommands"
	else
		local remote_opts="--username= --config-dir= --no-auth-cache"
		local fc_opts="
			--follow-parent --authors-file= --repack=
			--no-metadata --use-svm-props --use-svnsync-props
			--log-window-size= --no-checkout --quiet
			--repack-flags --use-log-author --localtime
			--ignore-paths= $remote_opts
			"
		local init_opts="
			--template= --shared= --trunk= --tags=
			--branches= --stdlayout --minimize-url
			--no-metadata --use-svm-props --use-svnsync-props
			--rewrite-root= --prefix= --use-log-author
			--add-author-from $remote_opts
			"
		local cmt_opts="
			--edit --rmdir --find-copies-harder --copy-similarity=
			"

		local cur="${COMP_WORDS[COMP_CWORD]}"
		case "$subcommand,$cur" in
		fetch,--*)
			__gitcomp "--revision= --fetch-all $fc_opts"
			;;
		clone,--*)
			__gitcomp "--revision= $fc_opts $init_opts"
			;;
		init,--*)
			__gitcomp "$init_opts"
			;;
		dcommit,--*)
			__gitcomp "
				--merge --strategy= --verbose --dry-run
				--fetch-all --no-rebase --commit-url
				--revision $cmt_opts $fc_opts
				"
			;;
		set-tree,--*)
			__gitcomp "--stdin $cmt_opts $fc_opts"
			;;
		create-ignore,--*|propget,--*|proplist,--*|show-ignore,--*|\
		show-externals,--*)
			__gitcomp "--revision="
			;;
		log,--*)
			__gitcomp "
				--limit= --revision= --verbose --incremental
				--oneline --show-commit --non-recursive
				--authors-file= --color
				"
			;;
		rebase,--*)
			__gitcomp "
				--merge --verbose --strategy= --local
				--fetch-all --dry-run $fc_opts
				"
			;;
		commit-diff,--*)
			__gitcomp "--message= --file= --revision= $cmt_opts"
			;;
		info,--*)
			__gitcomp "--url"
			;;
		branch,--*)
			__gitcomp "--dry-run --message --tag"
			;;
		tag,--*)
			__gitcomp "--dry-run --message"
			;;
		blame,--*)
			__gitcomp "--git-format"
			;;
		migrate,--*)
			__gitcomp "
				--config-dir= --ignore-paths= --minimize
				--no-auth-cache --username=
				"
			;;
		*)
			COMPREPLY=()
			;;
		esac
	fi
}

_git_tag ()
{
	local i c=1 f=0
	while [ $c -lt $COMP_CWORD ]; do
		i="${COMP_WORDS[c]}"
		case "$i" in
		-d|-v)
			__gitcomp "$(__git_tags)"
			return
			;;
		-f)
			f=1
			;;
		esac
		c=$((++c))
	done

	case "${COMP_WORDS[COMP_CWORD-1]}" in
	-m|-F)
		COMPREPLY=()
		;;
	-*|tag)
		if [ $f = 1 ]; then
			__gitcomp "$(__git_tags)"
		else
			COMPREPLY=()
		fi
		;;
	*)
		__gitcomp "$(__git_refs)"
		;;
	esac
}

_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|-p|--paginate) ;;
		--help) command="help"; break ;;
		*) command="$i"; break ;;
		esac
		c=$((++c))
	done

	if [ -z "$command" ]; then
		case "${COMP_WORDS[COMP_CWORD]}" in
		--*)   __gitcomp "
			--paginate
			--no-pager
			--git-dir=
			--bare
			--version
			--exec-path
			--work-tree=
			--help
			"
			;;
		*)     __gitcomp "$(__git_porcelain_commands) $(__git_aliases)" ;;
		esac
		return
	fi

	local expansion=$(__git_aliased_command "$command")
	[ "$expansion" ] && command="$expansion"

	case "$command" in
	am)          _git_am ;;
	add)         _git_add ;;
	apply)       _git_apply ;;
	archive)     _git_archive ;;
	bisect)      _git_bisect ;;
	bundle)      _git_bundle ;;
	branch)      _git_branch ;;
	checkout)    _git_checkout ;;
	cherry)      _git_cherry ;;
	cherry-pick) _git_cherry_pick ;;
	clean)       _git_clean ;;
	clone)       _git_clone ;;
	commit)      _git_commit ;;
	config)      _git_config ;;
	describe)    _git_describe ;;
	diff)        _git_diff ;;
	fetch)       _git_fetch ;;
	format-patch) _git_format_patch ;;
	gc)          _git_gc ;;
	grep)        _git_grep ;;
	help)        _git_help ;;
	init)        _git_init ;;
	log)         _git_log ;;
	ls-files)    _git_ls_files ;;
	ls-remote)   _git_ls_remote ;;
	ls-tree)     _git_ls_tree ;;
	merge)       _git_merge;;
	mergetool)   _git_mergetool;;
	merge-base)  _git_merge_base ;;
	mv)          _git_mv ;;
	name-rev)    _git_name_rev ;;
	pull)        _git_pull ;;
	push)        _git_push ;;
	rebase)      _git_rebase ;;
	remote)      _git_remote ;;
	reset)       _git_reset ;;
	revert)      _git_revert ;;
	rm)          _git_rm ;;
	send-email)  _git_send_email ;;
	shortlog)    _git_shortlog ;;
	show)        _git_show ;;
	show-branch) _git_show_branch ;;
	stash)       _git_stash ;;
	stage)       _git_add ;;
	submodule)   _git_submodule ;;
	svn)         _git_svn ;;
	tag)         _git_tag ;;
	whatchanged) _git_log ;;
	*)           COMPREPLY=() ;;
	esac
}

_gitk ()
{
	__git_has_doubledash && return

	local cur="${COMP_WORDS[COMP_CWORD]}"
	local g="$(__gitdir)"
	local merge=""
	if [ -f $g/MERGE_HEAD ]; then
		merge="--merge"
	fi
	case "$cur" in
	--*)
		__gitcomp "
			$__git_log_common_options
			$__git_log_gitk_options
			$merge
			"
		return
		;;
	esac
	__git_complete_revlist
}

complete -o bashdefault -o default -o nospace -F _git git 2>/dev/null \
	|| complete -o default -o nospace -F _git git
complete -o bashdefault -o default -o nospace -F _gitk gitk 2>/dev/null \
	|| complete -o default -o nospace -F _gitk gitk

# 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 bashdefault -o default -o nospace -F _git git.exe 2>/dev/null \
	|| complete -o default -o nospace -F _git git.exe
fi