Merge branch 'cp/completion-clone-recurse-submodules'

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

# bash/zsh 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'
#    *) git email aliases for git-send-email
#    *) tree paths within 'ref:path/to/file' expressions
#    *) file paths within current working directory and index
#    *) common --long-options
#
# To use these routines:
#
#    1) Copy this file to somewhere (e.g. ~/.git-completion.bash).
#    2) Add the following line to your .bashrc/.zshrc:
#        source ~/.git-completion.bash
#    3) Consider changing your PS1 to also show the current branch,
#       see git-prompt.sh for details.
#
# If you use complex aliases of form '!f() { ... }; f', you can use the null
# command ':' as the first command in the function body to declare the desired
# completion style.  For example '!f() { : git commit ; ... }; f' will
# tell the completion to use commit completion.  This also works with aliases
# of form "!sh -c '...'".  For example, "!sh -c ': git commit ; ... '".

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 "$__git_dir"
                elif [ -n "${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
}

# The following function is based on code from:
#
#   bash_completion - programmable completion functions for bash 3.2+
#
#   Copyright © 2006-2008, Ian Macdonald <ian@caliban.org>
#             © 2009-2010, Bash Completion Maintainers
#                     <bash-completion-devel@lists.alioth.debian.org>
#
#   This program is free software; you can redistribute it and/or modify
#   it under the terms of the GNU General Public License as published by
#   the Free Software Foundation; either version 2, or (at your option)
#   any later version.
#
#   This program is distributed in the hope that it will be useful,
#   but WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#   GNU General Public License for more details.
#
#   You should have received a copy of the GNU General Public License
#   along with this program; if not, write to the Free Software Foundation,
#   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
#   The latest version of this software can be obtained here:
#
#   http://bash-completion.alioth.debian.org/
#
#   RELEASE: 2.x

# This function can be used to access a tokenized list of words
# on the command line:
#
#       __git_reassemble_comp_words_by_ref '=:'
#       if test "${words_[cword_-1]}" = -w
#       then
#               ...
#       fi
#
# The argument should be a collection of characters from the list of
# word completion separators (COMP_WORDBREAKS) to treat as ordinary
# characters.
#
# This is roughly equivalent to going back in time and setting
# COMP_WORDBREAKS to exclude those characters.  The intent is to
# make option types like --date=<type> and <rev>:<path> easy to
# recognize by treating each shell word as a single token.
#
# It is best not to set COMP_WORDBREAKS directly because the value is
# shared with other completion scripts.  By the time the completion
# function gets called, COMP_WORDS has already been populated so local
# changes to COMP_WORDBREAKS have no effect.
#
# Output: words_, cword_, cur_.

__git_reassemble_comp_words_by_ref()
{
        local exclude i j first
        # Which word separators to exclude?
        exclude="${1//[^$COMP_WORDBREAKS]}"
        cword_=$COMP_CWORD
        if [ -z "$exclude" ]; then
                words_=("${COMP_WORDS[@]}")
                return
        fi
        # List of word completion separators has shrunk;
        # re-assemble words to complete.
        for ((i=0, j=0; i < ${#COMP_WORDS[@]}; i++, j++)); do
                # Append each nonempty word consisting of just
                # word separator characters to the current word.
                first=t
                while
                        [ $i -gt 0 ] &&
                        [ -n "${COMP_WORDS[$i]}" ] &&
                        # word consists of excluded word separators
                        [ "${COMP_WORDS[$i]//[^$exclude]}" = "${COMP_WORDS[$i]}" ]
                do
                        # Attach to the previous token,
                        # unless the previous token is the command name.
                        if [ $j -ge 2 ] && [ -n "$first" ]; then
                                ((j--))
                        fi
                        first=
                        words_[$j]=${words_[j]}${COMP_WORDS[i]}
                        if [ $i = $COMP_CWORD ]; then
                                cword_=$j
                        fi
                        if (($i < ${#COMP_WORDS[@]} - 1)); then
                                ((i++))
                        else
                                # Done.
                                return
                        fi
                done
                words_[$j]=${words_[j]}${COMP_WORDS[i]}
                if [ $i = $COMP_CWORD ]; then
                        cword_=$j
                fi
        done
}

if ! type _get_comp_words_by_ref >/dev/null 2>&1; then
_get_comp_words_by_ref ()
{
        local exclude cur_ words_ cword_
        if [ "$1" = "-n" ]; then
                exclude=$2
                shift 2
        fi
        __git_reassemble_comp_words_by_ref "$exclude"
        cur_=${words_[cword_]}
        while [ $# -gt 0 ]; do
                case "$1" in
                cur)
                        cur=$cur_
                        ;;
                prev)
                        prev=${words_[$cword_-1]}
                        ;;
                words)
                        words=("${words_[@]}")
                        ;;
                cword)
                        cword=$cword_
                        ;;
                esac
                shift
        done
}
fi

__gitcompappend ()
{
        local x i=${#COMPREPLY[@]}
        for x in $1; do
                if [[ "$x" == "$3"* ]]; then
                        COMPREPLY[i++]="$2$x$4"
                fi
        done
}

__gitcompadd ()
{
        COMPREPLY=()
        __gitcompappend "$@"
}

# Generates completion reply, appending a space to possible completion words,
# if necessary.
# It accepts 1 to 4 arguments:
# 1: List of possible completion words.
# 2: A prefix to be added to each possible completion word (optional).
# 3: Generate possible completion matches for this word (optional).
# 4: A suffix to be appended to each possible completion word (optional).
__gitcomp ()
{
        local cur_="${3-$cur}"

        case "$cur_" in
        --*=)
                ;;
        *)
                local c i=0 IFS=$' \t\n'
                for c in $1; do
                        c="$c${4-}"
                        if [[ $c == "$cur_"* ]]; then
                                case $c in
                                --*=*|*.) ;;
                                *) c="$c " ;;
                                esac
                                COMPREPLY[i++]="${2-}$c"
                        fi
                done
                ;;
        esac
}

# Variation of __gitcomp_nl () that appends to the existing list of
# completion candidates, COMPREPLY.
__gitcomp_nl_append ()
{
        local IFS=$'\n'
        __gitcompappend "$1" "${2-}" "${3-$cur}" "${4- }"
}

# Generates completion reply from newline-separated possible completion words
# by appending a space to all of them.
# It accepts 1 to 4 arguments:
# 1: List of possible completion words, separated by a single newline.
# 2: A prefix to be added to each possible completion word (optional).
# 3: Generate possible completion matches for this word (optional).
# 4: A suffix to be appended to each possible completion word instead of
#    the default space (optional).  If specified but empty, nothing is
#    appended.
__gitcomp_nl ()
{
        COMPREPLY=()
        __gitcomp_nl_append "$@"
}

# Generates completion reply with compgen from newline-separated possible
# completion filenames.
# It accepts 1 to 3 arguments:
# 1: List of possible completion filenames, separated by a single newline.
# 2: A directory prefix to be added to each possible completion filename
#    (optional).
# 3: Generate possible completion matches for this word (optional).
__gitcomp_file ()
{
        local IFS=$'\n'

        # XXX does not work when the directory prefix contains a tilde,
        # since tilde expansion is not applied.
        # This means that COMPREPLY will be empty and Bash default
        # completion will be used.
        __gitcompadd "$1" "${2-}" "${3-$cur}" ""

        # use a hack to enable file mode in bash < 4
        compopt -o filenames +o nospace 2>/dev/null ||
        compgen -f /non-existing-dir/ > /dev/null
}

# Execute 'git ls-files', unless the --committable option is specified, in
# which case it runs 'git diff-index' to find out the files that can be
# committed.  It return paths relative to the directory specified in the first
# argument, and using the options specified in the second argument.
__git_ls_files_helper ()
{
        if [ "$2" == "--committable" ]; then
                git -C "$1" diff-index --name-only --relative HEAD
        else
                # NOTE: $2 is not quoted in order to support multiple options
                git -C "$1" ls-files --exclude-standard $2
        fi 2>/dev/null
}


# __git_index_files accepts 1 or 2 arguments:
# 1: Options to pass to ls-files (required).
# 2: A directory path (optional).
#    If provided, only files within the specified directory are listed.
#    Sub directories are never recursed.  Path must have a trailing
#    slash.
__git_index_files ()
{
        local dir="$(__gitdir)" root="${2-.}" file

        if [ -d "$dir" ]; then
                __git_ls_files_helper "$root" "$1" |
                while read -r file; do
                        case "$file" in
                        ?*/*) echo "${file%%/*}" ;;
                        *) echo "$file" ;;
                        esac
                done | sort | uniq
        fi
}

__git_heads ()
{
        local dir="$(__gitdir)"
        if [ -d "$dir" ]; then
                git --git-dir="$dir" for-each-ref --format='%(refname:short)' \
                        refs/heads
                return
        fi
}

__git_tags ()
{
        local dir="$(__gitdir)"
        if [ -d "$dir" ]; then
                git --git-dir="$dir" for-each-ref --format='%(refname:short)' \
                        refs/tags
                return
        fi
}

# __git_refs accepts 0, 1 (to pass to __gitdir), or 2 arguments
# presence of 2nd argument means use the guess heuristic employed
# by checkout for tracking branches
__git_refs ()
{
        local i hash dir="$(__gitdir "${1-}")" track="${2-}"
        local format refs
        if [ -d "$dir" ]; then
                case "$cur" in
                refs|refs/*)
                        format="refname"
                        refs="${cur%/*}"
                        track=""
                        ;;
                *)
                        for i in HEAD FETCH_HEAD ORIG_HEAD MERGE_HEAD; do
                                if [ -e "$dir/$i" ]; then echo $i; fi
                        done
                        format="refname:short"
                        refs="refs/tags refs/heads refs/remotes"
                        ;;
                esac
                git --git-dir="$dir" for-each-ref --format="%($format)" \
                        $refs
                if [ -n "$track" ]; then
                        # employ the heuristic used by git checkout
                        # Try to find a remote branch that matches the completion word
                        # but only output if the branch name is unique
                        local ref entry
                        git --git-dir="$dir" for-each-ref --shell --format="ref=%(refname:short)" \
                                "refs/remotes/" | \
                        while read -r entry; do
                                eval "$entry"
                                ref="${ref#*/}"
                                if [[ "$ref" == "$cur"* ]]; then
                                        echo "$ref"
                                fi
                        done | sort | uniq -u
                fi
                return
        fi
        case "$cur" in
        refs|refs/*)
                git ls-remote "$dir" "$cur*" 2>/dev/null | \
                while read -r hash i; do
                        case "$i" in
                        *^{}) ;;
                        *) echo "$i" ;;
                        esac
                done
                ;;
        *)
                echo "HEAD"
                git for-each-ref --format="%(refname:short)" -- \
                        "refs/remotes/$dir/" 2>/dev/null | sed -e "s#^$dir/##"
                ;;
        esac
}

# __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 i hash
        git ls-remote "$1" 'refs/heads/*' 2>/dev/null | \
        while read -r hash i; do
                echo "$i:refs/remotes/$1/${i#refs/heads/}"
        done
}

__git_remotes ()
{
        local d="$(__gitdir)"
        test -d "$d/remotes" && ls -1 "$d/remotes"
        git --git-dir="$d" remote
}

__git_list_merge_strategies ()
{
        git merge -s help 2>&1 |
        sed -n -e '/[Aa]vailable strategies are: /,/^$/{
                s/\.$//
                s/.*://
                s/^[    ]*//
                s/[     ]*$//
                p
        }'
}

__git_merge_strategies=
# 'git merge -s help' (and thus detection of the merge strategy
# list) fails, unfortunately, if run outside of any git working
# tree.  __git_merge_strategies is set to the empty string in
# that case, and the detection will be repeated the next time it
# is needed.
__git_compute_merge_strategies ()
{
        test -n "$__git_merge_strategies" ||
        __git_merge_strategies=$(__git_list_merge_strategies)
}

__git_complete_revlist_file ()
{
        local pfx ls ref cur_="$cur"
        case "$cur_" in
        *..?*:*)
                return
                ;;
        ?*:*)
                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

                __gitcomp_nl "$(git --git-dir="$(__gitdir)" ls-tree "$ls" 2>/dev/null \
                                | sed '/^100... blob /{
                                           s,^.*        ,,
                                           s,$, ,
                                       }
                                       /^120000 blob /{
                                           s,^.*        ,,
                                           s,$, ,
                                       }
                                       /^040000 tree /{
                                           s,^.*        ,,
                                           s,$,/,
                                       }
                                       s/^.*    //')" \
                        "$pfx" "$cur_" ""
                ;;
        *...*)
                pfx="${cur_%...*}..."
                cur_="${cur_#*...}"
                __gitcomp_nl "$(__git_refs)" "$pfx" "$cur_"
                ;;
        *..*)
                pfx="${cur_%..*}.."
                cur_="${cur_#*..}"
                __gitcomp_nl "$(__git_refs)" "$pfx" "$cur_"
                ;;
        *)
                __gitcomp_nl "$(__git_refs)"
                ;;
        esac
}


# __git_complete_index_file requires 1 argument:
# 1: the options to pass to ls-file
#
# The exception is --committable, which finds the files appropriate commit.
__git_complete_index_file ()
{
        local pfx="" cur_="$cur"

        case "$cur_" in
        ?*/*)
                pfx="${cur_%/*}"
                cur_="${cur_##*/}"
                pfx="${pfx}/"
                ;;
        esac

        __gitcomp_file "$(__git_index_files "$1" ${pfx:+"$pfx"})" "$pfx" "$cur_"
}

__git_complete_file ()
{
        __git_complete_revlist_file
}

__git_complete_revlist ()
{
        __git_complete_revlist_file
}

__git_complete_remote_or_refspec ()
{
        local cur_="$cur" cmd="${words[1]}"
        local i c=2 remote="" pfx="" lhs=1 no_complete_refspec=0
        if [ "$cmd" = "remote" ]; then
                ((c++))
        fi
        while [ $c -lt $cword ]; do
                i="${words[c]}"
                case "$i" in
                --mirror) [ "$cmd" = "push" ] && no_complete_refspec=1 ;;
                --all)
                        case "$cmd" in
                        push) no_complete_refspec=1 ;;
                        fetch)
                                return
                                ;;
                        *) ;;
                        esac
                        ;;
                -*) ;;
                *) remote="$i"; break ;;
                esac
                ((c++))
        done
        if [ -z "$remote" ]; then
                __gitcomp_nl "$(__git_remotes)"
                return
        fi
        if [ $no_complete_refspec = 1 ]; then
                return
        fi
        [ "$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 [ $lhs = 1 ]; then
                        __gitcomp_nl "$(__git_refs2 "$remote")" "$pfx" "$cur_"
                else
                        __gitcomp_nl "$(__git_refs)" "$pfx" "$cur_"
                fi
                ;;
        pull|remote)
                if [ $lhs = 1 ]; then
                        __gitcomp_nl "$(__git_refs "$remote")" "$pfx" "$cur_"
                else
                        __gitcomp_nl "$(__git_refs)" "$pfx" "$cur_"
                fi
                ;;
        push)
                if [ $lhs = 1 ]; then
                        __gitcomp_nl "$(__git_refs)" "$pfx" "$cur_"
                else
                        __gitcomp_nl "$(__git_refs "$remote")" "$pfx" "$cur_"
                fi
                ;;
        esac
}

__git_complete_strategy ()
{
        __git_compute_merge_strategies
        case "$prev" in
        -s|--strategy)
                __gitcomp "$__git_merge_strategies"
                return 0
        esac
        case "$cur" in
        --strategy=*)
                __gitcomp "$__git_merge_strategies" "" "${cur##--strategy=}"
                return 0
                ;;
        esac
        return 1
}

__git_commands () {
        if test -n "${GIT_TESTING_COMMAND_COMPLETION:-}"
        then
                printf "%s" "${GIT_TESTING_COMMAND_COMPLETION}"
        else
                git help -a|egrep '^  [a-zA-Z0-9]'
        fi
}

__git_list_all_commands ()
{
        local i IFS=" "$'\n'
        for i in $(__git_commands)
        do
                case $i in
                *--*)             : helper pattern;;
                *) echo $i;;
                esac
        done
}

__git_all_commands=
__git_compute_all_commands ()
{
        test -n "$__git_all_commands" ||
        __git_all_commands=$(__git_list_all_commands)
}

__git_list_porcelain_commands ()
{
        local i IFS=" "$'\n'
        __git_compute_all_commands
        for i in $__git_all_commands
        do
                case $i in
                *--*)             : helper pattern;;
                applymbox)        : ask gittus;;
                applypatch)       : ask gittus;;
                archimport)       : import;;
                cat-file)         : plumbing;;
                check-attr)       : plumbing;;
                check-ignore)     : plumbing;;
                check-mailmap)    : plumbing;;
                check-ref-format) : plumbing;;
                checkout-index)   : plumbing;;
                column)           : internal helper;;
                commit-tree)      : plumbing;;
                count-objects)    : infrequent;;
                credential)       : credentials;;
                credential-*)     : credentials helper;;
                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;;
                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;;
                prune)            : plumbing;;
                prune-packed)     : plumbing;;
                quiltimport)      : import;;
                read-tree)        : plumbing;;
                receive-pack)     : plumbing;;
                remote-*)         : transport;;
                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;;
                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_commands=
__git_compute_porcelain_commands ()
{
        test -n "$__git_porcelain_commands" ||
        __git_porcelain_commands=$(__git_list_porcelain_commands)
}

# Lists all set config variables starting with the given section prefix,
# with the prefix removed.
__git_get_config_variables ()
{
        local section="$1" i IFS=$'\n'
        for i in $(git --git-dir="$(__gitdir)" config --name-only --get-regexp "^$section\..*" 2>/dev/null); do
                echo "${i#$section.}"
        done
}

__git_pretty_aliases ()
{
        __git_get_config_variables "pretty"
}

__git_aliases ()
{
        __git_get_config_variables "alias"
}

# __git_aliased_command requires 1 argument
__git_aliased_command ()
{
        local word cmdline=$(git --git-dir="$(__gitdir)" \
                config --get "alias.$1")
        for word in $cmdline; do
                case "$word" in
                \!gitk|gitk)
                        echo "gitk"
                        return
                        ;;
                \!*)    : shell command alias ;;
                -*)     : option ;;
                *=*)    : setting env ;;
                git)    : git itself ;;
                \(\))   : skip parens of shell function definition ;;
                {)      : skip start of shell helper function ;;
                :)      : skip null command ;;
                \'*)    : skip opening quote after sh -c ;;
                *)
                        echo "$word"
                        return
                esac
        done
}

# __git_find_on_cmdline requires 1 argument
__git_find_on_cmdline ()
{
        local word subcommand c=1
        while [ $c -lt $cword ]; do
                word="${words[c]}"
                for subcommand in $1; do
                        if [ "$subcommand" = "$word" ]; then
                                echo "$subcommand"
                                return
                        fi
                done
                ((c++))
        done
}

# Echo the value of an option set on the command line or config
#
# $1: short option name
# $2: long option name including =
# $3: list of possible values
# $4: config string (optional)
#
# example:
# result="$(__git_get_option_value "-d" "--do-something=" \
#     "yes no" "core.doSomething")"
#
# result is then either empty (no option set) or "yes" or "no"
#
# __git_get_option_value requires 3 arguments
__git_get_option_value ()
{
        local c short_opt long_opt val
        local result= values config_key word

        short_opt="$1"
        long_opt="$2"
        values="$3"
        config_key="$4"

        ((c = $cword - 1))
        while [ $c -ge 0 ]; do
                word="${words[c]}"
                for val in $values; do
                        if [ "$short_opt$val" = "$word" ] ||
                           [ "$long_opt$val"  = "$word" ]; then
                                result="$val"
                                break 2
                        fi
                done
                ((c--))
        done

        if [ -n "$config_key" ] && [ -z "$result" ]; then
                result="$(git --git-dir="$(__gitdir)" config "$config_key")"
        fi

        echo "$result"
}

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

# Try to count non option arguments passed on the command line for the
# specified git command.
# When options are used, it is necessary to use the special -- option to
# tell the implementation were non option arguments begin.
# XXX this can not be improved, since options can appear everywhere, as
# an example:
#       git mv x -n y
#
# __git_count_arguments requires 1 argument: the git command executed.
__git_count_arguments ()
{
        local word i c=0

        # Skip "git" (first argument)
        for ((i=1; i < ${#words[@]}; i++)); do
                word="${words[i]}"

                case "$word" in
                        --)
                                # Good; we can assume that the following are only non
                                # option arguments.
                                ((c = 0))
                                ;;
                        "$1")
                                # Skip the specified git command and discard git
                                # main options
                                ((c = 0))
                                ;;
                        ?*)
                                ((c++))
                                ;;
                esac
        done

        printf "%d" $c
}

__git_whitespacelist="nowarn warn error error-all fix"

_git_am ()
{
        local dir="$(__gitdir)"
        if [ -d "$dir"/rebase-apply ]; then
                __gitcomp "--skip --continue --resolved --abort"
                return
        fi
        case "$cur" in
        --whitespace=*)
                __gitcomp "$__git_whitespacelist" "" "${cur##--whitespace=}"
                return
                ;;
        --*)
                __gitcomp "
                        --3way --committer-date-is-author-date --ignore-date
                        --ignore-whitespace --ignore-space-change
                        --interactive --keep --no-utf8 --signoff --utf8
                        --whitespace= --scissors
                        "
                return
        esac
}

_git_apply ()
{
        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=
                        --ignore-whitespace --ignore-space-change
                        --whitespace= --inaccurate-eof --verbose
                        "
                return
        esac
}

_git_add ()
{
        case "$cur" in
        --*)
                __gitcomp "
                        --interactive --refresh --patch --update --dry-run
                        --ignore-errors --intent-to-add
                        "
                return
        esac

        # XXX should we check for --update and --all options ?
        __git_complete_index_file "--others --modified --directory --no-empty-directory"
}

_git_archive ()
{
        case "$cur" in
        --format=*)
                __gitcomp "$(git archive --list)" "" "${cur##--format=}"
                return
                ;;
        --remote=*)
                __gitcomp_nl "$(__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="$(__git_find_on_cmdline "$subcommands")"
        if [ -z "$subcommand" ]; then
                if [ -f "$(__gitdir)"/BISECT_START ]; then
                        __gitcomp "$subcommands"
                else
                        __gitcomp "replay start"
                fi
                return
        fi

        case "$subcommand" in
        bad|good|reset|skip|start)
                __gitcomp_nl "$(__git_refs)"
                ;;
        *)
                ;;
        esac
}

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

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

        case "$cur" in
        --set-upstream-to=*)
                __gitcomp_nl "$(__git_refs)" "" "${cur##--set-upstream-to=}"
                ;;
        --*)
                __gitcomp "
                        --color --no-color --verbose --abbrev= --no-abbrev
                        --track --no-track --contains --merged --no-merged
                        --set-upstream-to= --edit-description --list
                        --unset-upstream
                        "
                ;;
        *)
                if [ $only_local_ref = "y" -a $has_r = "n" ]; then
                        __gitcomp_nl "$(__git_heads)"
                else
                        __gitcomp_nl "$(__git_refs)"
                fi
                ;;
        esac
}

_git_bundle ()
{
        local cmd="${words[2]}"
        case "$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

        case "$cur" in
        --conflict=*)
                __gitcomp "diff3 merge" "" "${cur##--conflict=}"
                ;;
        --*)
                __gitcomp "
                        --quiet --ours --theirs --track --no-track --merge
                        --conflict= --orphan --patch
                        "
                ;;
        *)
                # check if --track, --no-track, or --no-guess was specified
                # if so, disable DWIM mode
                local flags="--track --no-track --no-guess" track=1
                if [ -n "$(__git_find_on_cmdline "$flags")" ]; then
                        track=''
                fi
                __gitcomp_nl "$(__git_refs '' $track)"
                ;;
        esac
}

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

_git_cherry_pick ()
{
        local dir="$(__gitdir)"
        if [ -f "$dir"/CHERRY_PICK_HEAD ]; then
                __gitcomp "--continue --quit --abort"
                return
        fi
        case "$cur" in
        --*)
                __gitcomp "--edit --no-commit --signoff --strategy= --mainline"
                ;;
        *)
                __gitcomp_nl "$(__git_refs)"
                ;;
        esac
}

_git_clean ()
{
        case "$cur" in
        --*)
                __gitcomp "--dry-run --quiet"
                return
                ;;
        esac

        # XXX should we check for -x option ?
        __git_complete_index_file "--others --directory"
}

_git_clone ()
{
        case "$cur" in
        --*)
                __gitcomp "
                        --local
                        --no-hardlinks
                        --shared
                        --reference
                        --quiet
                        --no-checkout
                        --bare
                        --mirror
                        --origin
                        --upload-pack
                        --template=
                        --depth
                        --single-branch
                        --branch
                        --recurse-submodules
                        "
                return
                ;;
        esac
}

__git_untracked_file_modes="all no normal"

_git_commit ()
{
        case "$prev" in
        -c|-C)
                __gitcomp_nl "$(__git_refs)" "" "${cur}"
                return
                ;;
        esac

        case "$cur" in
        --cleanup=*)
                __gitcomp "default scissors strip verbatim whitespace
                        " "" "${cur##--cleanup=}"
                return
                ;;
        --reuse-message=*|--reedit-message=*|\
        --fixup=*|--squash=*)
                __gitcomp_nl "$(__git_refs)" "" "${cur#*=}"
                return
                ;;
        --untracked-files=*)
                __gitcomp "$__git_untracked_file_modes" "" "${cur##--untracked-files=}"
                return
                ;;
        --*)
                __gitcomp "
                        --all --author= --signoff --verify --no-verify
                        --edit --no-edit
                        --amend --include --only --interactive
                        --dry-run --reuse-message= --reedit-message=
                        --reset-author --file= --message= --template=
                        --cleanup= --untracked-files --untracked-files=
                        --verbose --quiet --fixup= --squash=
                        "
                return
        esac

        if git rev-parse --verify --quiet HEAD >/dev/null; then
                __git_complete_index_file "--committable"
        else
                # This is the first commit
                __git_complete_index_file "--cached"
        fi
}

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

__git_diff_algorithms="myers minimal patience histogram"

__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 --ignore-blank-lines --exit-code
                        --quiet --ext-diff --no-ext-diff
                        --no-prefix --src-prefix= --dst-prefix=
                        --inter-hunk-context=
                        --patience --histogram --minimal
                        --raw --word-diff --word-diff-regex=
                        --dirstat --dirstat= --dirstat-by-file
                        --dirstat-by-file= --cumulative
                        --diff-algorithm=
"

_git_diff ()
{
        __git_has_doubledash && return

        case "$cur" in
        --diff-algorithm=*)
                __gitcomp "$__git_diff_algorithms" "" "${cur##--diff-algorithm=}"
                return
                ;;
        --*)
                __gitcomp "--cached --staged --pickaxe-all --pickaxe-regex
                        --base --ours --theirs --no-index
                        $__git_diff_common_options
                        "
                return
                ;;
        esac
        __git_complete_revlist_file
}

__git_mergetools_common="diffuse diffmerge ecmerge emerge kdiff3 meld opendiff
                        tkdiff vimdiff gvimdiff xxdiff araxis p4merge bc codecompare
"

_git_difftool ()
{
        __git_has_doubledash && return

        case "$cur" in
        --tool=*)
                __gitcomp "$__git_mergetools_common kompare" "" "${cur##--tool=}"
                return
                ;;
        --*)
                __gitcomp "--cached --staged --pickaxe-all --pickaxe-regex
                        --base --ours --theirs
                        --no-renames --diff-filter= --find-copies-harder
                        --relative --ignore-submodules
                        --tool="
                return
                ;;
        esac
        __git_complete_revlist_file
}

__git_fetch_recurse_submodules="yes on-demand no"

__git_fetch_options="
        --quiet --verbose --append --upload-pack --force --keep --depth=
        --tags --no-tags --all --prune --dry-run --recurse-submodules=
"

_git_fetch ()
{
        case "$cur" in
        --recurse-submodules=*)
                __gitcomp "$__git_fetch_recurse_submodules" "" "${cur##--recurse-submodules=}"
                return
                ;;
        --*)
                __gitcomp "$__git_fetch_options"
                return
                ;;
        esac
        __git_complete_remote_or_refspec
}

__git_format_patch_options="
        --stdout --attach --no-attach --thread --thread= --no-thread
        --numbered --start-number --numbered-files --keep-subject --signoff
        --signature --no-signature --in-reply-to= --cc= --full-index --binary
        --not --all --cover-letter --no-prefix --src-prefix= --dst-prefix=
        --inline --suffix= --ignore-if-in-upstream --subject-prefix=
        --output-directory --reroll-count --to= --quiet --notes
"

_git_format_patch ()
{
        case "$cur" in
        --thread=*)
                __gitcomp "
                        deep shallow
                        " "" "${cur##--thread=}"
                return
                ;;
        --*)
                __gitcomp "$__git_format_patch_options"
                return
                ;;
        esac
        __git_complete_revlist
}

_git_fsck ()
{
        case "$cur" in
        --*)
                __gitcomp "
                        --tags --root --unreachable --cache --no-reflogs --full
                        --strict --verbose --lost-found
                        "
                return
                ;;
        esac
}

_git_gc ()
{
        case "$cur" in
        --*)
                __gitcomp "--prune --aggressive"
                return
                ;;
        esac
}

_git_gitk ()
{
        _gitk
}

__git_match_ctag() {
        awk "/^${1//\//\\/}/ { print \$1 }" "$2"
}

_git_grep ()
{
        __git_has_doubledash && return

        case "$cur" in
        --*)
                __gitcomp "
                        --cached
                        --text --ignore-case --word-regexp --invert-match
                        --full-name --line-number
                        --extended-regexp --basic-regexp --fixed-strings
                        --perl-regexp
                        --threads
                        --files-with-matches --name-only
                        --files-without-match
                        --max-depth
                        --count
                        --and --or --not --all-match
                        "
                return
                ;;
        esac

        case "$cword,$prev" in
        2,*|*,-*)
                if test -r tags; then
                        __gitcomp_nl "$(__git_match_ctag "$cur" tags)"
                        return
                fi
                ;;
        esac

        __gitcomp_nl "$(__git_refs)"
}

_git_help ()
{
        case "$cur" in
        --*)
                __gitcomp "--all --guides --info --man --web"
                return
                ;;
        esac
        __git_compute_all_commands
        __gitcomp "$__git_all_commands $(__git_aliases)
                attributes cli core-tutorial cvs-migration
                diffcore everyday gitk glossary hooks ignore modules
                namespaces repository-layout revisions tutorial tutorial-2
                workflows
                "
}

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

_git_ls_files ()
{
        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

        # XXX ignore options like --modified and always suggest all cached
        # files.
        __git_complete_index_file "--cached"
}

_git_ls_remote ()
{
        __gitcomp_nl "$(__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 --merges --no-merges
        --max-count=
        --max-age= --since= --after=
        --min-age= --until= --before=
        --min-parents= --max-parents=
        --no-min-parents --no-max-parents
"
# 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 --notes --no-notes
"
# Options that go well for log and shortlog (not gitk)
__git_log_shortlog_options="
        --author= --committer= --grep=
        --all-match --invert-grep
"

__git_log_pretty_formats="oneline short medium full fuller email raw format:"
__git_log_date_formats="relative iso8601 rfc2822 short local default raw"

_git_log ()
{
        __git_has_doubledash && return

        local g="$(git rev-parse --git-dir 2>/dev/null)"
        local merge=""
        if [ -f "$g/MERGE_HEAD" ]; then
                merge="--merge"
        fi
        case "$cur" in
        --pretty=*|--format=*)
                __gitcomp "$__git_log_pretty_formats $(__git_pretty_aliases)
                        " "" "${cur#*=}"
                return
                ;;
        --date=*)
                __gitcomp "$__git_log_date_formats" "" "${cur##--date=}"
                return
                ;;
        --decorate=*)
                __gitcomp "full short no" "" "${cur##--decorate=}"
                return
                ;;
        --*)
                __gitcomp "
                        $__git_log_common_options
                        $__git_log_shortlog_options
                        $__git_log_gitk_options
                        --root --topo-order --date-order --reverse
                        --follow --full-diff
                        --abbrev-commit --abbrev=
                        --relative-date --date=
                        --pretty= --format= --oneline
                        --show-signature
                        --cherry-mark
                        --cherry-pick
                        --graph
                        --decorate --decorate=
                        --walk-reflogs
                        --parents --children
                        $merge
                        $__git_diff_common_options
                        --pickaxe-all --pickaxe-regex
                        "
                return
                ;;
        esac
        __git_complete_revlist
}

# Common merge options shared by git-merge(1) and git-pull(1).
__git_merge_options="
        --no-commit --no-stat --log --no-log --squash --strategy
        --commit --stat --no-squash --ff --no-ff --ff-only --edit --no-edit
        --verify-signatures --no-verify-signatures --gpg-sign
        --quiet --verbose --progress --no-progress
"

_git_merge ()
{
        __git_complete_strategy && return

        case "$cur" in
        --*)
                __gitcomp "$__git_merge_options
                        --rerere-autoupdate --no-rerere-autoupdate --abort"
                return
        esac
        __gitcomp_nl "$(__git_refs)"
}

_git_mergetool ()
{
        case "$cur" in
        --tool=*)
                __gitcomp "$__git_mergetools_common tortoisemerge" "" "${cur##--tool=}"
                return
                ;;
        --*)
                __gitcomp "--tool="
                return
                ;;
        esac
}

_git_merge_base ()
{
        case "$cur" in
        --*)
                __gitcomp "--octopus --independent --is-ancestor --fork-point"
                return
                ;;
        esac
        __gitcomp_nl "$(__git_refs)"
}

_git_mv ()
{
        case "$cur" in
        --*)
                __gitcomp "--dry-run"
                return
                ;;
        esac

        if [ $(__git_count_arguments "mv") -gt 0 ]; then
                # We need to show both cached and untracked files (including
                # empty directories) since this may not be the last argument.
                __git_complete_index_file "--cached --others --directory"
        else
                __git_complete_index_file "--cached"
        fi
}

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

_git_notes ()
{
        local subcommands='add append copy edit list prune remove show'
        local subcommand="$(__git_find_on_cmdline "$subcommands")"

        case "$subcommand,$cur" in
        ,--*)
                __gitcomp '--ref'
                ;;
        ,*)
                case "$prev" in
                --ref)
                        __gitcomp_nl "$(__git_refs)"
                        ;;
                *)
                        __gitcomp "$subcommands --ref"
                        ;;
                esac
                ;;
        add,--reuse-message=*|append,--reuse-message=*|\
        add,--reedit-message=*|append,--reedit-message=*)
                __gitcomp_nl "$(__git_refs)" "" "${cur#*=}"
                ;;
        add,--*|append,--*)
                __gitcomp '--file= --message= --reedit-message=
                                --reuse-message='
                ;;
        copy,--*)
                __gitcomp '--stdin'
                ;;
        prune,--*)
                __gitcomp '--dry-run --verbose'
                ;;
        prune,*)
                ;;
        *)
                case "$prev" in
                -m|-F)
                        ;;
                *)
                        __gitcomp_nl "$(__git_refs)"
                        ;;
                esac
                ;;
        esac
}

_git_pull ()
{
        __git_complete_strategy && return

        case "$cur" in
        --recurse-submodules=*)
                __gitcomp "$__git_fetch_recurse_submodules" "" "${cur##--recurse-submodules=}"
                return
                ;;
        --*)
                __gitcomp "
                        --rebase --no-rebase
                        $__git_merge_options
                        $__git_fetch_options
                "
                return
                ;;
        esac
        __git_complete_remote_or_refspec
}

__git_push_recurse_submodules="check on-demand"

__git_complete_force_with_lease ()
{
        local cur_=$1

        case "$cur_" in
        --*=)
                ;;
        *:*)
                __gitcomp_nl "$(__git_refs)" "" "${cur_#*:}"
                ;;
        *)
                __gitcomp_nl "$(__git_refs)" "" "$cur_"
                ;;
        esac
}

_git_push ()
{
        case "$prev" in
        --repo)
                __gitcomp_nl "$(__git_remotes)"
                return
                ;;
        --recurse-submodules)
                __gitcomp "$__git_push_recurse_submodules"
                return
                ;;
        esac
        case "$cur" in
        --repo=*)
                __gitcomp_nl "$(__git_remotes)" "" "${cur##--repo=}"
                return
                ;;
        --recurse-submodules=*)
                __gitcomp "$__git_push_recurse_submodules" "" "${cur##--recurse-submodules=}"
                return
                ;;
        --force-with-lease=*)
                __git_complete_force_with_lease "${cur##--force-with-lease=}"
                return
                ;;
        --*)
                __gitcomp "
                        --all --mirror --tags --dry-run --force --verbose
                        --quiet --prune --delete --follow-tags
                        --receive-pack= --repo= --set-upstream
                        --force-with-lease --force-with-lease= --recurse-submodules=
                "
                return
                ;;
        esac
        __git_complete_remote_or_refspec
}

_git_rebase ()
{
        local dir="$(__gitdir)"
        if [ -f "$dir"/rebase-merge/interactive ]; then
                __gitcomp "--continue --skip --abort --edit-todo"
                return
        elif [ -d "$dir"/rebase-apply ] || [ -d "$dir"/rebase-merge ]; then
                __gitcomp "--continue --skip --abort"
                return
        fi
        __git_complete_strategy && return
        case "$cur" in
        --whitespace=*)
                __gitcomp "$__git_whitespacelist" "" "${cur##--whitespace=}"
                return
                ;;
        --*)
                __gitcomp "
                        --onto --merge --strategy --interactive
                        --preserve-merges --stat --no-stat
                        --committer-date-is-author-date --ignore-date
                        --ignore-whitespace --whitespace=
                        --autosquash --no-autosquash
                        --fork-point --no-fork-point
                        --autostash --no-autostash
                        --verify --no-verify
                        --keep-empty --root --force-rebase --no-ff
                        --exec
                        "

                return
        esac
        __gitcomp_nl "$(__git_refs)"
}

_git_reflog ()
{
        local subcommands="show delete expire"
        local subcommand="$(__git_find_on_cmdline "$subcommands")"

        if [ -z "$subcommand" ]; then
                __gitcomp "$subcommands"
        else
                __gitcomp_nl "$(__git_refs)"
        fi
}

__git_send_email_confirm_options="always never auto cc compose"
__git_send_email_suppresscc_options="author self cc bodycc sob cccmd body all"

_git_send_email ()
{
        case "$prev" in
        --to|--cc|--bcc|--from)
                __gitcomp "
                $(git --git-dir="$(__gitdir)" send-email --dump-aliases 2>/dev/null)
                "
                return
                ;;
        esac

        case "$cur" in
        --confirm=*)
                __gitcomp "
                        $__git_send_email_confirm_options
                        " "" "${cur##--confirm=}"
                return
                ;;
        --suppress-cc=*)
                __gitcomp "
                        $__git_send_email_suppresscc_options
                        " "" "${cur##--suppress-cc=}"

                return
                ;;
        --smtp-encryption=*)
                __gitcomp "ssl tls" "" "${cur##--smtp-encryption=}"
                return
                ;;
        --thread=*)
                __gitcomp "
                        deep shallow
                        " "" "${cur##--thread=}"
                return
                ;;
        --to=*|--cc=*|--bcc=*|--from=*)
                __gitcomp "
                $(git --git-dir="$(__gitdir)" send-email --dump-aliases 2>/dev/null)
                " "" "${cur#--*=}"
                return
                ;;
        --*)
                __gitcomp "--annotate --bcc --cc --cc-cmd --chain-reply-to
                        --compose --confirm= --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-encryption= --smtp-user
                        --subject --suppress-cc= --suppress-from --thread --to
                        --validate --no-validate
                        $__git_format_patch_options"
                return
                ;;
        esac
        __git_complete_revlist
}

_git_stage ()
{
        _git_add
}

_git_status ()
{
        local complete_opt
        local untracked_state

        case "$cur" in
        --ignore-submodules=*)
                __gitcomp "none untracked dirty all" "" "${cur##--ignore-submodules=}"
                return
                ;;
        --untracked-files=*)
                __gitcomp "$__git_untracked_file_modes" "" "${cur##--untracked-files=}"
                return
                ;;
        --column=*)
                __gitcomp "
                        always never auto column row plain dense nodense
                        " "" "${cur##--column=}"
                return
                ;;
        --*)
                __gitcomp "
                        --short --branch --porcelain --long --verbose
                        --untracked-files= --ignore-submodules= --ignored
                        --column= --no-column
                        "
                return
                ;;
        esac

        untracked_state="$(__git_get_option_value "-u" "--untracked-files=" \
                "$__git_untracked_file_modes" "status.showUntrackedFiles")"

        case "$untracked_state" in
        no)
                # --ignored option does not matter
                complete_opt=
                ;;
        all|normal|*)
                complete_opt="--cached --directory --no-empty-directory --others"

                if [ -n "$(__git_find_on_cmdline "--ignored")" ]; then
                        complete_opt="$complete_opt --ignored --exclude=*"
                fi
                ;;
        esac

        __git_complete_index_file "$complete_opt"
}

__git_config_get_set_variables ()
{
        local prevword word config_file= c=$cword
        while [ $c -gt 1 ]; do
                word="${words[c]}"
                case "$word" in
                --system|--global|--local|--file=*)
                        config_file="$word"
                        break
                        ;;
                -f|--file)
                        config_file="$word $prevword"
                        break
                        ;;
                esac
                prevword=$word
                c=$((--c))
        done

        git --git-dir="$(__gitdir)" config $config_file --name-only --list 2>/dev/null
}

_git_config ()
{
        case "$prev" in
        branch.*.remote|branch.*.pushremote)
                __gitcomp_nl "$(__git_remotes)"
                return
                ;;
        branch.*.merge)
                __gitcomp_nl "$(__git_refs)"
                return
                ;;
        branch.*.rebase)
                __gitcomp "false true preserve interactive"
                return
                ;;
        remote.pushdefault)
                __gitcomp_nl "$(__git_remotes)"
                return
                ;;
        remote.*.fetch)
                local remote="${prev#remote.}"
                remote="${remote%.fetch}"
                if [ -z "$cur" ]; then
                        __gitcomp_nl "refs/heads/" "" "" ""
                        return
                fi
                __gitcomp_nl "$(__git_refs_remotes "$remote")"
                return
                ;;
        remote.*.push)
                local remote="${prev#remote.}"
                remote="${remote%.push}"
                __gitcomp_nl "$(git --git-dir="$(__gitdir)" \
                        for-each-ref --format='%(refname):%(refname)' \
                        refs/heads)"
                return
                ;;
        pull.twohead|pull.octopus)
                __git_compute_merge_strategies
                __gitcomp "$__git_merge_strategies"
                return
                ;;
        color.branch|color.diff|color.interactive|\
        color.showbranch|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
                ;;
        diff.submodule)
                __gitcomp "log short"
                return
                ;;
        help.format)
                __gitcomp "man info web html"
                return
                ;;
        log.date)
                __gitcomp "$__git_log_date_formats"
                return
                ;;
        sendemail.aliasesfiletype)
                __gitcomp "mutt mailrc pine elm gnus"
                return
                ;;
        sendemail.confirm)
                __gitcomp "$__git_send_email_confirm_options"
                return
                ;;
        sendemail.suppresscc)
                __gitcomp "$__git_send_email_suppresscc_options"
                return
                ;;
        sendemail.transferencoding)
                __gitcomp "7bit 8bit quoted-printable base64"
                return
                ;;
        --get|--get-all|--unset|--unset-all)
                __gitcomp_nl "$(__git_config_get_set_variables)"
                return
                ;;
        *.*)
                return
                ;;
        esac
        case "$cur" in
        --*)
                __gitcomp "
                        --system --global --local --file=
                        --list --replace-all
                        --get --get-all --get-regexp
                        --add --unset --unset-all
                        --remove-section --rename-section
                        --name-only
                        "
                return
                ;;
        branch.*.*)
                local pfx="${cur%.*}." cur_="${cur##*.}"
                __gitcomp "remote pushremote merge mergeoptions rebase" "$pfx" "$cur_"
                return
                ;;
        branch.*)
                local pfx="${cur%.*}." cur_="${cur#*.}"
                __gitcomp_nl "$(__git_heads)" "$pfx" "$cur_" "."
                __gitcomp_nl_append $'autosetupmerge\nautosetuprebase\n' "$pfx" "$cur_"
                return
                ;;
        guitool.*.*)
                local pfx="${cur%.*}." cur_="${cur##*.}"
                __gitcomp "
                        argprompt cmd confirm needsfile noconsole norescan
                        prompt revprompt revunmerged title
                        " "$pfx" "$cur_"
                return
                ;;
        difftool.*.*)
                local pfx="${cur%.*}." cur_="${cur##*.}"
                __gitcomp "cmd path" "$pfx" "$cur_"
                return
                ;;
        man.*.*)
                local pfx="${cur%.*}." cur_="${cur##*.}"
                __gitcomp "cmd path" "$pfx" "$cur_"
                return
                ;;
        mergetool.*.*)
                local pfx="${cur%.*}." cur_="${cur##*.}"
                __gitcomp "cmd path trustExitCode" "$pfx" "$cur_"
                return
                ;;
        pager.*)
                local pfx="${cur%.*}." cur_="${cur#*.}"
                __git_compute_all_commands
                __gitcomp_nl "$__git_all_commands" "$pfx" "$cur_"
                return
                ;;
        remote.*.*)
                local pfx="${cur%.*}." cur_="${cur##*.}"
                __gitcomp "
                        url proxy fetch push mirror skipDefaultUpdate
                        receivepack uploadpack tagopt pushurl
                        " "$pfx" "$cur_"
                return
                ;;
        remote.*)
                local pfx="${cur%.*}." cur_="${cur#*.}"
                __gitcomp_nl "$(__git_remotes)" "$pfx" "$cur_" "."
                __gitcomp_nl_append "pushdefault" "$pfx" "$cur_"
                return
                ;;
        url.*.*)
                local pfx="${cur%.*}." cur_="${cur##*.}"
                __gitcomp "insteadOf pushInsteadOf" "$pfx" "$cur_"
                return
                ;;
        esac
        __gitcomp "
                add.ignoreErrors
                advice.commitBeforeMerge
                advice.detachedHead
                advice.implicitIdentity
                advice.pushNonFastForward
                advice.resolveConflict
                advice.statusHints
                alias.
                am.keepcr
                apply.ignorewhitespace
                apply.whitespace
                branch.autosetupmerge
                branch.autosetuprebase
                browser.
                clean.requireForce
                color.branch
                color.branch.current
                color.branch.local
                color.branch.plain
                color.branch.remote
                color.decorate.HEAD
                color.decorate.branch
                color.decorate.remoteBranch
                color.decorate.stash
                color.decorate.tag
                color.diff
                color.diff.commit
                color.diff.frag
                color.diff.func
                color.diff.meta
                color.diff.new
                color.diff.old
                color.diff.plain
                color.diff.whitespace
                color.grep
                color.grep.context
                color.grep.filename
                color.grep.function
                color.grep.linenumber
                color.grep.match
                color.grep.selected
                color.grep.separator
                color.interactive
                color.interactive.error
                color.interactive.header
                color.interactive.help
                color.interactive.prompt
                color.pager
                color.showbranch
                color.status
                color.status.added
                color.status.changed
                color.status.header
                color.status.nobranch
                color.status.unmerged
                color.status.untracked
                color.status.updated
                color.ui
                commit.status
                commit.template
                core.abbrev
                core.askpass
                core.attributesfile
                core.autocrlf
                core.bare
                core.bigFileThreshold
                core.compression
                core.createObject
                core.deltaBaseCacheLimit
                core.editor
                core.eol
                core.excludesfile
                core.fileMode
                core.fsyncobjectfiles
                core.gitProxy
                core.ignoreStat
                core.ignorecase
                core.logAllRefUpdates
                core.loosecompression
                core.notesRef
                core.packedGitLimit
                core.packedGitWindowSize
                core.pager
                core.preferSymlinkRefs
                core.preloadindex
                core.quotepath
                core.repositoryFormatVersion
                core.safecrlf
                core.sharedRepository
                core.sparseCheckout
                core.symlinks
                core.trustctime
                core.untrackedCache
                core.warnAmbiguousRefs
                core.whitespace
                core.worktree
                diff.autorefreshindex
                diff.external
                diff.ignoreSubmodules
                diff.mnemonicprefix
                diff.noprefix
                diff.renameLimit
                diff.renames
                diff.statGraphWidth
                diff.submodule
                diff.suppressBlankEmpty
                diff.tool
                diff.wordRegex
                diff.algorithm
                difftool.
                difftool.prompt
                fetch.recurseSubmodules
                fetch.unpackLimit
                format.attach
                format.cc
                format.coverLetter
                format.headers
                format.numbered
                format.pretty
                format.signature
                format.signoff
                format.subjectprefix
                format.suffix
                format.thread
                format.to
                gc.
                gc.aggressiveWindow
                gc.auto
                gc.autopacklimit
                gc.packrefs
                gc.pruneexpire
                gc.reflogexpire
                gc.reflogexpireunreachable
                gc.rerereresolved
                gc.rerereunresolved
                gitcvs.allbinary
                gitcvs.commitmsgannotation
                gitcvs.dbTableNamePrefix
                gitcvs.dbdriver
                gitcvs.dbname
                gitcvs.dbpass
                gitcvs.dbuser
                gitcvs.enabled
                gitcvs.logfile
                gitcvs.usecrlfattr
                guitool.
                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.minSessions
                http.noEPSV
                http.postBuffer
                http.proxy
                http.sslCipherList
                http.sslVersion
                http.sslCAInfo
                http.sslCAPath
                http.sslCert
                http.sslCertPasswordProtected
                http.sslKey
                http.sslVerify
                http.useragent
                i18n.commitEncoding
                i18n.logOutputEncoding
                imap.authMethod
                imap.folder
                imap.host
                imap.pass
                imap.port
                imap.preformattedHTML
                imap.sslverify
                imap.tunnel
                imap.user
                init.templatedir
                instaweb.browser
                instaweb.httpd
                instaweb.local
                instaweb.modulepath
                instaweb.port
                interactive.singlekey
                log.date
                log.decorate
                log.showroot
                mailmap.file
                man.
                man.viewer
                merge.
                merge.conflictstyle
                merge.log
                merge.renameLimit
                merge.renormalize
                merge.stat
                merge.tool
                merge.verbosity
                mergetool.
                mergetool.keepBackup
                mergetool.keepTemporaries
                mergetool.prompt
                notes.displayRef
                notes.rewrite.
                notes.rewrite.amend
                notes.rewrite.rebase
                notes.rewriteMode
                notes.rewriteRef
                pack.compression
                pack.deltaCacheLimit
                pack.deltaCacheSize
                pack.depth
                pack.indexVersion
                pack.packSizeLimit
                pack.threads
                pack.window
                pack.windowMemory
                pager.
                pretty.
                pull.octopus
                pull.twohead
                push.default
                push.followTags
                rebase.autosquash
                rebase.stat
                receive.autogc
                receive.denyCurrentBranch
                receive.denyDeleteCurrent
                receive.denyDeletes
                receive.denyNonFastForwards
                receive.fsckObjects
                receive.unpackLimit
                receive.updateserverinfo
                remote.pushdefault
                remotes.
                repack.usedeltabaseoffset
                rerere.autoupdate
                rerere.enabled
                sendemail.
                sendemail.aliasesfile
                sendemail.aliasfiletype
                sendemail.bcc
                sendemail.cc
                sendemail.cccmd
                sendemail.chainreplyto
                sendemail.confirm
                sendemail.envelopesender
                sendemail.from
                sendemail.identity
                sendemail.multiedit
                sendemail.signedoffbycc
                sendemail.smtpdomain
                sendemail.smtpencryption
                sendemail.smtppass
                sendemail.smtpserver
                sendemail.smtpserveroption
                sendemail.smtpserverport
                sendemail.smtpuser
                sendemail.suppresscc
                sendemail.suppressfrom
                sendemail.thread
                sendemail.to
                sendemail.validate
                showbranch.default
                status.relativePaths
                status.showUntrackedFiles
                status.submodulesummary
                submodule.
                tar.umask
                transfer.unpackLimit
                url.
                user.email
                user.name
                user.signingkey
                web.browser
                branch. remote.
        "
}

_git_remote ()
{
        local subcommands="add rename remove set-head set-branches set-url show prune update"
        local subcommand="$(__git_find_on_cmdline "$subcommands")"
        if [ -z "$subcommand" ]; then
                __gitcomp "$subcommands"
                return
        fi

        case "$subcommand" in
        rename|remove|set-url|show|prune)
                __gitcomp_nl "$(__git_remotes)"
                ;;
        set-head|set-branches)
                __git_complete_remote_or_refspec
                ;;
        update)
                __gitcomp "$(__git_get_config_variables "remotes")"
                ;;
        *)
                ;;
        esac
}

_git_replace ()
{
        __gitcomp_nl "$(__git_refs)"
}

_git_reset ()
{
        __git_has_doubledash && return

        case "$cur" in
        --*)
                __gitcomp "--merge --mixed --hard --soft --patch"
                return
                ;;
        esac
        __gitcomp_nl "$(__git_refs)"
}

_git_revert ()
{
        local dir="$(__gitdir)"
        if [ -f "$dir"/REVERT_HEAD ]; then
                __gitcomp "--continue --quit --abort"
                return
        fi
        case "$cur" in
        --*)
                __gitcomp "--edit --mainline --no-edit --no-commit --signoff"
                return
                ;;
        esac
        __gitcomp_nl "$(__git_refs)"
}

_git_rm ()
{
        case "$cur" in
        --*)
                __gitcomp "--cached --dry-run --ignore-unmatch --quiet"
                return
                ;;
        esac

        __git_complete_index_file "--cached"
}

_git_shortlog ()
{
        __git_has_doubledash && return

        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

        case "$cur" in
        --pretty=*|--format=*)
                __gitcomp "$__git_log_pretty_formats $(__git_pretty_aliases)
                        " "" "${cur#*=}"
                return
                ;;
        --diff-algorithm=*)
                __gitcomp "$__git_diff_algorithms" "" "${cur##--diff-algorithm=}"
                return
                ;;
        --*)
                __gitcomp "--pretty= --format= --abbrev-commit --oneline
                        --show-signature
                        $__git_diff_common_options
                        "
                return
                ;;
        esac
        __git_complete_revlist_file
}

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

_git_stash ()
{
        local save_opts='--all --keep-index --no-keep-index --quiet --patch --include-untracked'
        local subcommands='save list show apply clear drop pop create branch'
        local subcommand="$(__git_find_on_cmdline "$subcommands")"
        if [ -z "$subcommand" ]; then
                case "$cur" in
                --*)
                        __gitcomp "$save_opts"
                        ;;
                *)
                        if [ -z "$(__git_find_on_cmdline "$save_opts")" ]; then
                                __gitcomp "$subcommands"
                        fi
                        ;;
                esac
        else
                case "$subcommand,$cur" in
                save,--*)
                        __gitcomp "$save_opts"
                        ;;
                apply,--*|pop,--*)
                        __gitcomp "--index --quiet"
                        ;;
                drop,--*)
                        __gitcomp "--quiet"
                        ;;
                show,--*|branch,--*)
                        ;;
                branch,*)
                        if [ $cword -eq 3 ]; then
                                __gitcomp_nl "$(__git_refs)";
                        else
                                __gitcomp_nl "$(git --git-dir="$(__gitdir)" stash list \
                                                | sed -n -e 's/:.*//p')"
                        fi
                        ;;
                show,*|apply,*|drop,*|pop,*)
                        __gitcomp_nl "$(git --git-dir="$(__gitdir)" stash list \
                                        | sed -n -e 's/:.*//p')"
                        ;;
                *)
                        ;;
                esac
        fi
}

_git_submodule ()
{
        __git_has_doubledash && return

        local subcommands="add status init deinit update summary foreach sync"
        if [ -z "$(__git_find_on_cmdline "$subcommands")" ]; then
                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 mkdirs reset gc
                "
        local subcommand="$(__git_find_on_cmdline "$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= --include-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=
                        "

                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 --interactive $cmt_opts $fc_opts
                                "
                        ;;
                set-tree,--*)
                        __gitcomp "--stdin $cmt_opts $fc_opts"
                        ;;
                create-ignore,--*|propget,--*|proplist,--*|show-ignore,--*|\
                show-externals,--*|mkdirs,--*)
                        __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=
                                "
                        ;;
                reset,--*)
                        __gitcomp "--revision= --parent"
                        ;;
                *)
                        ;;
                esac
        fi
}

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

        case "$prev" in
        -m|-F)
                ;;
        -*|tag)
                if [ $f = 1 ]; then
                        __gitcomp_nl "$(__git_tags)"
                fi
                ;;
        *)
                __gitcomp_nl "$(__git_refs)"
                ;;
        esac

        case "$cur" in
        --*)
                __gitcomp "
                        --list --delete --verify --annotate --message --file
                        --sign --cleanup --local-user --force --column --sort
                        --contains --points-at
                        "
                ;;
        esac
}

_git_whatchanged ()
{
        _git_log
}

_git_worktree ()
{
        local subcommands="add list lock prune unlock"
        local subcommand="$(__git_find_on_cmdline "$subcommands")"
        if [ -z "$subcommand" ]; then
                __gitcomp "$subcommands"
        else
                case "$subcommand,$cur" in
                add,--*)
                        __gitcomp "--detach"
                        ;;
                list,--*)
                        __gitcomp "--porcelain"
                        ;;
                lock,--*)
                        __gitcomp "--reason"
                        ;;
                prune,--*)
                        __gitcomp "--dry-run --expire --verbose"
                        ;;
                *)
                        ;;
                esac
        fi
}

__git_main ()
{
        local i c=1 command __git_dir

        while [ $c -lt $cword ]; do
                i="${words[c]}"
                case "$i" in
                --git-dir=*) __git_dir="${i#--git-dir=}" ;;
                --git-dir)   ((c++)) ; __git_dir="${words[c]}" ;;
                --bare)      __git_dir="." ;;
                --help) command="help"; break ;;
                -c|--work-tree|--namespace) ((c++)) ;;
                -*) ;;
                *) command="$i"; break ;;
                esac
                ((c++))
        done

        if [ -z "$command" ]; then
                case "$cur" in
                --*)   __gitcomp "
                        --paginate
                        --no-pager
                        --git-dir=
                        --bare
                        --version
                        --exec-path
                        --exec-path=
                        --html-path
                        --man-path
                        --info-path
                        --work-tree=
                        --namespace=
                        --no-replace-objects
                        --help
                        "
                        ;;
                *)     __git_compute_porcelain_commands
                       __gitcomp "$__git_porcelain_commands $(__git_aliases)" ;;
                esac
                return
        fi

        local completion_func="_git_${command//-/_}"
        declare -f $completion_func >/dev/null && $completion_func && return

        local expansion=$(__git_aliased_command "$command")
        if [ -n "$expansion" ]; then
                words[1]=$expansion
                completion_func="_git_${expansion//-/_}"
                declare -f $completion_func >/dev/null && $completion_func
        fi
}

__gitk_main ()
{
        __git_has_doubledash && return

        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
}

if [[ -n ${ZSH_VERSION-} ]]; then
        echo "WARNING: this script is deprecated, please see git-completion.zsh" 1>&2

        autoload -U +X compinit && compinit

        __gitcomp ()
        {
                emulate -L zsh

                local cur_="${3-$cur}"

                case "$cur_" in
                --*=)
                        ;;
                *)
                        local c IFS=$' \t\n'
                        local -a array
                        for c in ${=1}; do
                                c="$c${4-}"
                                case $c in
                                --*=*|*.) ;;
                                *) c="$c " ;;
                                esac
                                array[${#array[@]}+1]="$c"
                        done
                        compset -P '*[=:]'
                        compadd -Q -S '' -p "${2-}" -a -- array && _ret=0
                        ;;
                esac
        }

        __gitcomp_nl ()
        {
                emulate -L zsh

                local IFS=$'\n'
                compset -P '*[=:]'
                compadd -Q -S "${4- }" -p "${2-}" -- ${=1} && _ret=0
        }

        __gitcomp_file ()
        {
                emulate -L zsh

                local IFS=$'\n'
                compset -P '*[=:]'
                compadd -Q -p "${2-}" -f -- ${=1} && _ret=0
        }

        _git ()
        {
                local _ret=1 cur cword prev
                cur=${words[CURRENT]}
                prev=${words[CURRENT-1]}
                let cword=CURRENT-1
                emulate ksh -c __${service}_main
                let _ret && _default && _ret=0
                return _ret
        }

        compdef _git git gitk
        return
fi

__git_func_wrap ()
{
        local cur words cword prev
        _get_comp_words_by_ref -n =: cur words cword prev
        $1
}

# Setup completion for certain functions defined above by setting common
# variables and workarounds.
# This is NOT a public function; use at your own risk.
__git_complete ()
{
        local wrapper="__git_wrap${2}"
        eval "$wrapper () { __git_func_wrap $2 ; }"
        complete -o bashdefault -o default -o nospace -F $wrapper $1 2>/dev/null \
                || complete -o default -o nospace -F $wrapper $1
}

# wrapper for backwards compatibility
_git ()
{
        __git_wrap__git_main
}

# wrapper for backwards compatibility
_gitk ()
{
        __git_wrap__gitk_main
}

__git_complete git __git_main
__git_complete gitk __gitk_main

# 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
__git_complete git.exe __git_main
fi