Fourth batch

[git/raj.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 ; ... '".
#
# Compatible with bash 3.2.57.
#
# You can set the following environment variables to influence the behavior of
# the completion routines:
#
#   GIT_COMPLETION_CHECKOUT_NO_GUESS
#
#     When set to "1", do not include "DWIM" suggestions in git-checkout
#     and git-switch completion (e.g., completing "foo" when "origin/foo"
#     exists).

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

# Discovers the path to the git repository taking any '--git-dir=<path>' and
# '-C <path>' options into account and stores it in the $__git_repo_path
# variable.
__git_find_repo_path ()
{
        if [ -n "${__git_repo_path-}" ]; then
                # we already know where it is
                return
        fi

        if [ -n "${__git_C_args-}" ]; then
                __git_repo_path="$(git "${__git_C_args[@]}" \
                        ${__git_dir:+--git-dir="$__git_dir"} \
                        rev-parse --absolute-git-dir 2>/dev/null)"
        elif [ -n "${__git_dir-}" ]; then
                test -d "$__git_dir" &&
                __git_repo_path="$__git_dir"
        elif [ -n "${GIT_DIR-}" ]; then
                test -d "${GIT_DIR-}" &&
                __git_repo_path="$GIT_DIR"
        elif [ -d .git ]; then
                __git_repo_path=.git
        else
                __git_repo_path="$(git rev-parse --git-dir 2>/dev/null)"
        fi
}

# Deprecated: use __git_find_repo_path() and $__git_repo_path instead
# __gitdir accepts 0 or 1 arguments (i.e., location)
# returns location of .git repo
__gitdir ()
{
        if [ -z "${1-}" ]; then
                __git_find_repo_path || return 1
                echo "$__git_repo_path"
        elif [ -d "$1/.git" ]; then
                echo "$1/.git"
        else
                echo "$1"
        fi
}

# Runs git with all the options given as argument, respecting any
# '--git-dir=<path>' and '-C <path>' options present on the command line
__git ()
{
        git ${__git_C_args:+"${__git_C_args[@]}"} \
                ${__git_dir:+--git-dir="$__git_dir"} "$@" 2>/dev/null
}

# Removes backslash escaping, single quotes and double quotes from a word,
# stores the result in the variable $dequoted_word.
# 1: The word to dequote.
__git_dequote ()
{
        local rest="$1" len ch

        dequoted_word=""

        while test -n "$rest"; do
                len=${#dequoted_word}
                dequoted_word="$dequoted_word${rest%%[\\\'\"]*}"
                rest="${rest:$((${#dequoted_word}-$len))}"

                case "${rest:0:1}" in
                \\)
                        ch="${rest:1:1}"
                        case "$ch" in
                        $'\n')
                                ;;
                        *)
                                dequoted_word="$dequoted_word$ch"
                                ;;
                        esac
                        rest="${rest:2}"
                        ;;
                \')
                        rest="${rest:1}"
                        len=${#dequoted_word}
                        dequoted_word="$dequoted_word${rest%%\'*}"
                        rest="${rest:$((${#dequoted_word}-$len+1))}"
                        ;;
                \")
                        rest="${rest:1}"
                        while test -n "$rest" ; do
                                len=${#dequoted_word}
                                dequoted_word="$dequoted_word${rest%%[\\\"]*}"
                                rest="${rest:$((${#dequoted_word}-$len))}"
                                case "${rest:0:1}" in
                                \\)
                                        ch="${rest:1:1}"
                                        case "$ch" in
                                        \"|\\|\$|\`)
                                                dequoted_word="$dequoted_word$ch"
                                                ;;
                                        $'\n')
                                                ;;
                                        *)
                                                dequoted_word="$dequoted_word\\$ch"
                                                ;;
                                        esac
                                        rest="${rest:2}"
                                        ;;
                                \")
                                        rest="${rest:1}"
                                        break
                                        ;;
                                esac
                        done
                        ;;
                esac
        done
}

# 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, see <http://www.gnu.org/licenses/>.
#
#   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

# Fills the COMPREPLY array with prefiltered words without any additional
# processing.
# Callers must take care of providing only words that match the current word
# to be completed and adding any prefix and/or suffix (trailing space!), if
# necessary.
# 1: List of newline-separated matching completion words, complete with
#    prefix and suffix.
__gitcomp_direct ()
{
        local IFS=$'\n'

        COMPREPLY=($1)
}

# Similar to __gitcomp_direct, but appends to COMPREPLY instead.
# Callers must take care of providing only words that match the current word
# to be completed and adding any prefix and/or suffix (trailing space!), if
# necessary.
# 1: List of newline-separated matching completion words, complete with
#    prefix and suffix.
__gitcomp_direct_append ()
{
        local IFS=$'\n'

        COMPREPLY+=($1)
}

__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 "$cur_" in
        --*=)
                ;;
        --no-*)
                local c i=0 IFS=$' \t\n'
                for c in $1; do
                        if [[ $c == "--" ]]; then
                                continue
                        fi
                        c="$c${4-}"
                        if [[ $c == "$cur_"* ]]; then
                                case $c in
                                --*=|*.) ;;
                                *) c="$c " ;;
                                esac
                                COMPREPLY[i++]="${2-}$c"
                        fi
                done
                ;;
        *)
                local c i=0 IFS=$' \t\n'
                for c in $1; do
                        if [[ $c == "--" ]]; then
                                c="--no-...${4-}"
                                if [[ $c == "$cur_"* ]]; then
                                        COMPREPLY[i++]="${2-}$c "
                                fi
                                break
                        fi
                        c="$c${4-}"
                        if [[ $c == "$cur_"* ]]; then
                                case $c in
                                *=|*.) ;;
                                *) c="$c " ;;
                                esac
                                COMPREPLY[i++]="${2-}$c"
                        fi
                done
                ;;
        esac
}

# Clear the variables caching builtins' options when (re-)sourcing
# the completion script.
if [[ -n ${ZSH_VERSION-} ]]; then
        unset ${(M)${(k)parameters[@]}:#__gitcomp_builtin_*} 2>/dev/null
else
        unset $(compgen -v __gitcomp_builtin_)
fi

# This function is equivalent to
#
#    __gitcomp "$(git xxx --git-completion-helper) ..."
#
# except that the output is cached. Accept 1-3 arguments:
# 1: the git command to execute, this is also the cache key
# 2: extra options to be added on top (e.g. negative forms)
# 3: options to be excluded
__gitcomp_builtin ()
{
        # spaces must be replaced with underscore for multi-word
        # commands, e.g. "git remote add" becomes remote_add.
        local cmd="$1"
        local incl="${2-}"
        local excl="${3-}"

        local var=__gitcomp_builtin_"${cmd/-/_}"
        local options
        eval "options=\${$var-}"

        if [ -z "$options" ]; then
                # leading and trailing spaces are significant to make
                # option removal work correctly.
                options=" $incl $(__git ${cmd/_/ } --git-completion-helper) " || return

                for i in $excl; do
                        options="${options/ $i / }"
                done
                eval "$var=\"$options\""
        fi

        __gitcomp "$options"
}

# 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 "$@"
}

# Fills the COMPREPLY array with prefiltered paths without any additional
# processing.
# Callers must take care of providing only paths that match the current path
# to be completed and adding any prefix path components, if necessary.
# 1: List of newline-separated matching paths, complete with all prefix
#    path components.
__gitcomp_file_direct ()
{
        local IFS=$'\n'

        COMPREPLY=($1)

        # 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 ||
        true
}

# 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 ||
        true
}

# 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 "$1" -c core.quotePath=false diff-index \
                        --name-only --relative HEAD -- "${3//\\/\\\\}*"
        else
                # NOTE: $2 is not quoted in order to support multiple options
                __git -C "$1" -c core.quotePath=false ls-files \
                        --exclude-standard $2 -- "${3//\\/\\\\}*"
        fi
}


# __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.
# 3: List only paths matching this path component (optional).
__git_index_files ()
{
        local root="$2" match="$3"

        __git_ls_files_helper "$root" "$1" "${match:-?}" |
        awk -F / -v pfx="${2//\\/\\\\}" '{
                paths[$1] = 1
        }
        END {
                for (p in paths) {
                        if (substr(p, 1, 1) != "\"") {
                                # No special characters, easy!
                                print pfx p
                                continue
                        }

                        # The path is quoted.
                        p = dequote(p)
                        if (p == "")
                                continue

                        # Even when a directory name itself does not contain
                        # any special characters, it will still be quoted if
                        # any of its (stripped) trailing path components do.
                        # Because of this we may have seen the same directory
                        # both quoted and unquoted.
                        if (p in paths)
                                # We have seen the same directory unquoted,
                                # skip it.
                                continue
                        else
                                print pfx p
                }
        }
        function dequote(p,    bs_idx, out, esc, esc_idx, dec) {
                # Skip opening double quote.
                p = substr(p, 2)

                # Interpret backslash escape sequences.
                while ((bs_idx = index(p, "\\")) != 0) {
                        out = out substr(p, 1, bs_idx - 1)
                        esc = substr(p, bs_idx + 1, 1)
                        p = substr(p, bs_idx + 2)

                        if ((esc_idx = index("abtvfr\"\\", esc)) != 0) {
                                # C-style one-character escape sequence.
                                out = out substr("\a\b\t\v\f\r\"\\",
                                                 esc_idx, 1)
                        } else if (esc == "n") {
                                # Uh-oh, a newline character.
                                # We cannot reliably put a pathname
                                # containing a newline into COMPREPLY,
                                # and the newline would create a mess.
                                # Skip this path.
                                return ""
                        } else {
                                # Must be a \nnn octal value, then.
                                dec = esc             * 64 + \
                                      substr(p, 1, 1) * 8  + \
                                      substr(p, 2, 1)
                                out = out sprintf("%c", dec)
                                p = substr(p, 3)
                        }
                }
                # Drop closing double quote, if there is one.
                # (There is not any if this is a directory, as it was
                # already stripped with the trailing path components.)
                if (substr(p, length(p), 1) == "\"")
                        out = out substr(p, 1, length(p) - 1)
                else
                        out = out p

                return out
        }'
}

# __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 dequoted_word pfx="" cur_

        __git_dequote "$cur"

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

        __gitcomp_file_direct "$(__git_index_files "$1" "$pfx" "$cur_")"
}

# Lists branches from the local repository.
# 1: A prefix to be added to each listed branch (optional).
# 2: List only branches matching this word (optional; list all branches if
#    unset or empty).
# 3: A suffix to be appended to each listed branch (optional).
__git_heads ()
{
        local pfx="${1-}" cur_="${2-}" sfx="${3-}"

        __git for-each-ref --format="${pfx//\%/%%}%(refname:strip=2)$sfx" \
                        "refs/heads/$cur_*" "refs/heads/$cur_*/**"
}

# Lists branches from remote repositories.
# 1: A prefix to be added to each listed branch (optional).
# 2: List only branches matching this word (optional; list all branches if
#    unset or empty).
# 3: A suffix to be appended to each listed branch (optional).
__git_remote_heads ()
{
        local pfx="${1-}" cur_="${2-}" sfx="${3-}"

        __git for-each-ref --format="${pfx//\%/%%}%(refname:strip=2)$sfx" \
                        "refs/remotes/$cur_*" "refs/remotes/$cur_*/**"
}

# Lists tags from the local repository.
# Accepts the same positional parameters as __git_heads() above.
__git_tags ()
{
        local pfx="${1-}" cur_="${2-}" sfx="${3-}"

        __git for-each-ref --format="${pfx//\%/%%}%(refname:strip=2)$sfx" \
                        "refs/tags/$cur_*" "refs/tags/$cur_*/**"
}

# List unique branches from refs/remotes used for 'git checkout' and 'git
# switch' tracking DWIMery.
# 1: A prefix to be added to each listed branch (optional)
# 2: List only branches matching this word (optional; list all branches if
#    unset or empty).
# 3: A suffix to be appended to each listed branch (optional).
__git_dwim_remote_heads ()
{
        local pfx="${1-}" cur_="${2-}" sfx="${3-}"
        local fer_pfx="${pfx//\%/%%}" # "escape" for-each-ref format specifiers

        # employ the heuristic used by git checkout and git switch
        # Try to find a remote branch that cur_es the completion word
        # but only output if the branch name is unique
        __git for-each-ref --format="$fer_pfx%(refname:strip=3)$sfx" \
                --sort="refname:strip=3" \
                "refs/remotes/*/$cur_*" "refs/remotes/*/$cur_*/**" | \
        uniq -u
}

# Lists refs from the local (by default) or from a remote repository.
# It accepts 0, 1 or 2 arguments:
# 1: The remote to list refs from (optional; ignored, if set but empty).
#    Can be the name of a configured remote, a path, or a URL.
# 2: In addition to local refs, list unique branches from refs/remotes/ for
#    'git checkout's tracking DWIMery (optional; ignored, if set but empty).
# 3: A prefix to be added to each listed ref (optional).
# 4: List only refs matching this word (optional; list all refs if unset or
#    empty).
# 5: A suffix to be appended to each listed ref (optional; ignored, if set
#    but empty).
#
# Use __git_complete_refs() instead.
__git_refs ()
{
        local i hash dir track="${2-}"
        local list_refs_from=path remote="${1-}"
        local format refs
        local pfx="${3-}" cur_="${4-$cur}" sfx="${5-}"
        local match="${4-}"
        local fer_pfx="${pfx//\%/%%}" # "escape" for-each-ref format specifiers

        __git_find_repo_path
        dir="$__git_repo_path"

        if [ -z "$remote" ]; then
                if [ -z "$dir" ]; then
                        return
                fi
        else
                if __git_is_configured_remote "$remote"; then
                        # configured remote takes precedence over a
                        # local directory with the same name
                        list_refs_from=remote
                elif [ -d "$remote/.git" ]; then
                        dir="$remote/.git"
                elif [ -d "$remote" ]; then
                        dir="$remote"
                else
                        list_refs_from=url
                fi
        fi

        if [ "$list_refs_from" = path ]; then
                if [[ "$cur_" == ^* ]]; then
                        pfx="$pfx^"
                        fer_pfx="$fer_pfx^"
                        cur_=${cur_#^}
                        match=${match#^}
                fi
                case "$cur_" in
                refs|refs/*)
                        format="refname"
                        refs=("$match*" "$match*/**")
                        track=""
                        ;;
                *)
                        for i in HEAD FETCH_HEAD ORIG_HEAD MERGE_HEAD REBASE_HEAD; do
                                case "$i" in
                                $match*)
                                        if [ -e "$dir/$i" ]; then
                                                echo "$pfx$i$sfx"
                                        fi
                                        ;;
                                esac
                        done
                        format="refname:strip=2"
                        refs=("refs/tags/$match*" "refs/tags/$match*/**"
                                "refs/heads/$match*" "refs/heads/$match*/**"
                                "refs/remotes/$match*" "refs/remotes/$match*/**")
                        ;;
                esac
                __git_dir="$dir" __git for-each-ref --format="$fer_pfx%($format)$sfx" \
                        "${refs[@]}"
                if [ -n "$track" ]; then
                        __git_dwim_remote_heads "$pfx" "$match" "$sfx"
                fi
                return
        fi
        case "$cur_" in
        refs|refs/*)
                __git ls-remote "$remote" "$match*" | \
                while read -r hash i; do
                        case "$i" in
                        *^{}) ;;
                        *) echo "$pfx$i$sfx" ;;
                        esac
                done
                ;;
        *)
                if [ "$list_refs_from" = remote ]; then
                        case "HEAD" in
                        $match*)        echo "${pfx}HEAD$sfx" ;;
                        esac
                        __git for-each-ref --format="$fer_pfx%(refname:strip=3)$sfx" \
                                "refs/remotes/$remote/$match*" \
                                "refs/remotes/$remote/$match*/**"
                else
                        local query_symref
                        case "HEAD" in
                        $match*)        query_symref="HEAD" ;;
                        esac
                        __git ls-remote "$remote" $query_symref \
                                "refs/tags/$match*" "refs/heads/$match*" \
                                "refs/remotes/$match*" |
                        while read -r hash i; do
                                case "$i" in
                                *^{})   ;;
                                refs/*) echo "$pfx${i#refs/*/}$sfx" ;;
                                *)      echo "$pfx$i$sfx" ;;  # symbolic refs
                                esac
                        done
                fi
                ;;
        esac
}

# Completes refs, short and long, local and remote, symbolic and pseudo.
#
# Usage: __git_complete_refs [<option>]...
# --remote=<remote>: The remote to list refs from, can be the name of a
#                    configured remote, a path, or a URL.
# --dwim: List unique remote branches for 'git switch's tracking DWIMery.
# --pfx=<prefix>: A prefix to be added to each ref.
# --cur=<word>: The current ref to be completed.  Defaults to the current
#               word to be completed.
# --sfx=<suffix>: A suffix to be appended to each ref instead of the default
#                 space.
# --mode=<mode>: What set of refs to complete, one of 'refs' (the default) to
#                complete all refs, 'heads' to complete only branches, or
#                'remote-heads' to complete only remote branches. Note that
#                --remote is only compatible with --mode=refs.
__git_complete_refs ()
{
        local remote= dwim= pfx= cur_="$cur" sfx=" " mode="refs"

        while test $# != 0; do
                case "$1" in
                --remote=*)     remote="${1##--remote=}" ;;
                --dwim)         dwim="yes" ;;
                # --track is an old spelling of --dwim
                --track)        dwim="yes" ;;
                --pfx=*)        pfx="${1##--pfx=}" ;;
                --cur=*)        cur_="${1##--cur=}" ;;
                --sfx=*)        sfx="${1##--sfx=}" ;;
                --mode=*)       mode="${1##--mode=}" ;;
                *)              return 1 ;;
                esac
                shift
        done

        # complete references based on the specified mode
        case "$mode" in
                refs)
                        __gitcomp_direct "$(__git_refs "$remote" "" "$pfx" "$cur_" "$sfx")" ;;
                heads)
                        __gitcomp_direct "$(__git_heads "$pfx" "$cur_" "$sfx")" ;;
                remote-heads)
                        __gitcomp_direct "$(__git_remote_heads "$pfx" "$cur_" "$sfx")" ;;
                *)
                        return 1 ;;
        esac

        # Append DWIM remote branch names if requested
        if [ "$dwim" = "yes" ]; then
                __gitcomp_direct_append "$(__git_dwim_remote_heads "$pfx" "$cur_" "$sfx")"
        fi
}

# __git_refs2 requires 1 argument (to pass to __git_refs)
# Deprecated: use __git_complete_fetch_refspecs() instead.
__git_refs2 ()
{
        local i
        for i in $(__git_refs "$1"); do
                echo "$i:$i"
        done
}

# Completes refspecs for fetching from a remote repository.
# 1: The remote repository.
# 2: A prefix to be added to each listed refspec (optional).
# 3: The ref to be completed as a refspec instead of the current word to be
#    completed (optional)
# 4: A suffix to be appended to each listed refspec instead of the default
#    space (optional).
__git_complete_fetch_refspecs ()
{
        local i remote="$1" pfx="${2-}" cur_="${3-$cur}" sfx="${4- }"

        __gitcomp_direct "$(
                for i in $(__git_refs "$remote" "" "" "$cur_") ; do
                        echo "$pfx$i:$i$sfx"
                done
                )"
}

# __git_refs_remotes requires 1 argument (to pass to ls-remote)
__git_refs_remotes ()
{
        local i hash
        __git ls-remote "$1" 'refs/heads/*' | \
        while read -r hash i; do
                echo "$i:refs/remotes/$1/${i#refs/heads/}"
        done
}

__git_remotes ()
{
        __git_find_repo_path
        test -d "$__git_repo_path/remotes" && ls -1 "$__git_repo_path/remotes"
        __git remote
}

# Returns true if $1 matches the name of a configured remote, false otherwise.
__git_is_configured_remote ()
{
        local remote
        for remote in $(__git_remotes); do
                if [ "$remote" = "$1" ]; then
                        return 0
                fi
        done
        return 1
}

__git_list_merge_strategies ()
{
        LANG=C LC_ALL=C 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_merge_strategy_options="ours theirs subtree subtree= patience
        histogram diff-algorithm= ignore-space-change ignore-all-space
        ignore-space-at-eol renormalize no-renormalize no-renames
        find-renames find-renames= rename-threshold="

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

                __git_dequote "$cur_"

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

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

                __gitcomp_file "$(__git ls-tree "$ls" \
                                | sed 's/^.*    //
                                       s/$//')" \
                        "$pfx" "$cur_"
                ;;
        *...*)
                pfx="${cur_%...*}..."
                cur_="${cur_#*...}"
                __git_complete_refs --pfx="$pfx" --cur="$cur_"
                ;;
        *..*)
                pfx="${cur_%..*}.."
                cur_="${cur_#*..}"
                __git_complete_refs --pfx="$pfx" --cur="$cur_"
                ;;
        *)
                __git_complete_refs
                ;;
        esac
}

__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 ;;
                -d|--delete) [ "$cmd" = "push" ] && lhs=0 ;;
                --all)
                        case "$cmd" in
                        push) no_complete_refspec=1 ;;
                        fetch)
                                return
                                ;;
                        *) ;;
                        esac
                        ;;
                --multiple) no_complete_refspec=1; break ;;
                -*) ;;
                *) 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 [ $lhs = 1 ]; then
                        __git_complete_fetch_refspecs "$remote" "$pfx" "$cur_"
                else
                        __git_complete_refs --pfx="$pfx" --cur="$cur_"
                fi
                ;;
        pull|remote)
                if [ $lhs = 1 ]; then
                        __git_complete_refs --remote="$remote" --pfx="$pfx" --cur="$cur_"
                else
                        __git_complete_refs --pfx="$pfx" --cur="$cur_"
                fi
                ;;
        push)
                if [ $lhs = 1 ]; then
                        __git_complete_refs --pfx="$pfx" --cur="$cur_"
                else
                        __git_complete_refs --remote="$remote" --pfx="$pfx" --cur="$cur_"
                fi
                ;;
        esac
}

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

__git_all_commands=
__git_compute_all_commands ()
{
        test -n "$__git_all_commands" ||
        __git_all_commands=$(__git --list-cmds=main,others,alias,nohelpers)
}

# 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 $(__git config --name-only --get-regexp "^$section\..*"); do
                echo "${i#$section.}"
        done
}

__git_pretty_aliases ()
{
        __git_get_config_variables "pretty"
}

# __git_aliased_command requires 1 argument
__git_aliased_command ()
{
        local word cmdline=$(__git 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
}

# Check whether one of the given words is present on the command line,
# and print the first word found.
#
# Usage: __git_find_on_cmdline [<option>]... "<wordlist>"
# --show-idx: Optionally show the index of the found word in the $words array.
__git_find_on_cmdline ()
{
        local word c=1 show_idx

        while test $# -gt 1; do
                case "$1" in
                --show-idx)     show_idx=y ;;
                *)              return 1 ;;
                esac
                shift
        done
        local wordlist="$1"

        while [ $c -lt $cword ]; do
                for word in $wordlist; do
                        if [ "$word" = "${words[c]}" ]; then
                                if [ -n "${show_idx-}" ]; then
                                        echo "$c $word"
                                else
                                        echo "$word"
                                fi
                                return
                        fi
                done
                ((c++))
        done
}

# Similar to __git_find_on_cmdline, except that it loops backwards and thus
# prints the *last* word found. Useful for finding which of two options that
# supersede each other came last, such as "--guess" and "--no-guess".
#
# Usage: __git_find_last_on_cmdline [<option>]... "<wordlist>"
# --show-idx: Optionally show the index of the found word in the $words array.
__git_find_last_on_cmdline ()
{
        local word c=$cword show_idx

        while test $# -gt 1; do
                case "$1" in
                --show-idx)     show_idx=y ;;
                *)              return 1 ;;
                esac
                shift
        done
        local wordlist="$1"

        while [ $c -gt 1 ]; do
                ((c--))
                for word in $wordlist; do
                        if [ "$word" = "${words[c]}" ]; then
                                if [ -n "$show_idx" ]; then
                                        echo "$c $word"
                                else
                                        echo "$word"
                                fi
                                return
                        fi
                done
        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="$(__git config "$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_patchformat="mbox stgit stgit-series hg mboxrd"
__git_showcurrentpatch="diff raw"
__git_am_inprogress_options="--skip --continue --resolved --abort --quit --show-current-patch"

_git_am ()
{
        __git_find_repo_path
        if [ -d "$__git_repo_path"/rebase-apply ]; then
                __gitcomp "$__git_am_inprogress_options"
                return
        fi
        case "$cur" in
        --whitespace=*)
                __gitcomp "$__git_whitespacelist" "" "${cur##--whitespace=}"
                return
                ;;
        --patch-format=*)
                __gitcomp "$__git_patchformat" "" "${cur##--patch-format=}"
                return
                ;;
        --show-current-patch=*)
                __gitcomp "$__git_showcurrentpatch" "" "${cur##--show-current-patch=}"
                return
                ;;
        --*)
                __gitcomp_builtin am "" \
                        "$__git_am_inprogress_options"
                return
        esac
}

_git_apply ()
{
        case "$cur" in
        --whitespace=*)
                __gitcomp "$__git_whitespacelist" "" "${cur##--whitespace=}"
                return
                ;;
        --*)
                __gitcomp_builtin apply
                return
        esac
}

_git_add ()
{
        case "$cur" in
        --chmod=*)
                __gitcomp "+x -x" "" "${cur##--chmod=}"
                return
                ;;
        --*)
                __gitcomp_builtin add
                return
        esac

        local complete_opt="--others --modified --directory --no-empty-directory"
        if test -n "$(__git_find_on_cmdline "-u --update")"
        then
                complete_opt="--modified"
        fi
        __git_complete_index_file "$complete_opt"
}

_git_archive ()
{
        case "$cur" in
        --format=*)
                __gitcomp "$(git archive --list)" "" "${cur##--format=}"
                return
                ;;
        --remote=*)
                __gitcomp_nl "$(__git_remotes)" "" "${cur##--remote=}"
                return
                ;;
        --*)
                __gitcomp_builtin archive "--format= --list --verbose --prefix= --worktree-attributes"
                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 "$subcommand" ]; then
                __git_find_repo_path
                if [ -f "$__git_repo_path"/BISECT_START ]; then
                        __gitcomp "$subcommands"
                else
                        __gitcomp "replay start"
                fi
                return
        fi

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

__git_ref_fieldlist="refname objecttype objectsize objectname upstream push HEAD symref"

_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|--delete|-m|--move)  only_local_ref="y" ;;
                -r|--remotes)           has_r="y" ;;
                esac
                ((c++))
        done

        case "$cur" in
        --set-upstream-to=*)
                __git_complete_refs --cur="${cur##--set-upstream-to=}"
                ;;
        --*)
                __gitcomp_builtin branch
                ;;
        *)
                if [ $only_local_ref = "y" -a $has_r = "n" ]; then
                        __gitcomp_direct "$(__git_heads "" "$cur" " ")"
                else
                        __git_complete_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
}

# Helper function to decide whether or not we should enable DWIM logic for
# git-switch and git-checkout.
#
# To decide between the following rules in priority order
# 1) the last provided of "--guess" or "--no-guess" explicitly enable or
#    disable completion of DWIM logic respectively.
# 2) If the --no-track option is provided, take this as a hint to disable the
#    DWIM completion logic
# 3) If GIT_COMPLETION_CHECKOUT_NO_GUESS is set, disable the DWIM completion
#    logic, as requested by the user.
# 4) Enable DWIM logic otherwise.
#
__git_checkout_default_dwim_mode ()
{
        local last_option dwim_opt="--dwim"

        if [ "${GIT_COMPLETION_CHECKOUT_NO_GUESS-}" = "1" ]; then
                dwim_opt=""
        fi

        # --no-track disables DWIM, but with lower priority than
        # --guess/--no-guess
        if [ -n "$(__git_find_on_cmdline "--no-track")" ]; then
                dwim_opt=""
        fi

        # Find the last provided --guess or --no-guess
        last_option="$(__git_find_last_on_cmdline "--guess --no-guess")"
        case "$last_option" in
                --guess)
                        dwim_opt="--dwim"
                        ;;
                --no-guess)
                        dwim_opt=""
                        ;;
        esac

        echo "$dwim_opt"
}

_git_checkout ()
{
        __git_has_doubledash && return

        case "$cur" in
        --conflict=*)
                __gitcomp "diff3 merge" "" "${cur##--conflict=}"
                ;;
        --*)
                __gitcomp_builtin checkout
                ;;
        *)
                local dwim_opt="$(__git_checkout_default_dwim_mode)"
                local prevword prevword="${words[cword-1]}"

                case "$prevword" in
                        -b|-B|--orphan)
                                # Complete local branches (and DWIM branch
                                # remote branch names) for an option argument
                                # specifying a new branch name. This is for
                                # convenience, assuming new branches are
                                # possibly based on pre-existing branch names.
                                __git_complete_refs $dwim_opt --mode="heads"
                                return
                                ;;
                        *)
                                ;;
                esac

                # At this point, we've already handled special completion for
                # the arguments to -b/-B, and --orphan. There are 3 main
                # things left we can possibly complete:
                # 1) a start-point for -b/-B, -d/--detach, or --orphan
                # 2) a remote head, for --track
                # 3) an arbitrary reference, possibly including DWIM names
                #

                if [ -n "$(__git_find_on_cmdline "-b -B -d --detach --orphan")" ]; then
                        __git_complete_refs --mode="refs"
                elif [ -n "$(__git_find_on_cmdline "--track")" ]; then
                        __git_complete_refs --mode="remote-heads"
                else
                        __git_complete_refs $dwim_opt --mode="refs"
                fi
                ;;
        esac
}

__git_sequencer_inprogress_options="--continue --quit --abort --skip"

__git_cherry_pick_inprogress_options=$__git_sequencer_inprogress_options

_git_cherry_pick ()
{
        __git_find_repo_path
        if [ -f "$__git_repo_path"/CHERRY_PICK_HEAD ]; then
                __gitcomp "$__git_cherry_pick_inprogress_options"
                return
        fi

        __git_complete_strategy && return

        case "$cur" in
        --*)
                __gitcomp_builtin cherry-pick "" \
                        "$__git_cherry_pick_inprogress_options"
                ;;
        *)
                __git_complete_refs
                ;;
        esac
}

_git_clean ()
{
        case "$cur" in
        --*)
                __gitcomp_builtin clean
                return
                ;;
        esac

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

_git_clone ()
{
        case "$prev" in
        -c|--config)
                __git_complete_config_variable_name_and_value
                return
                ;;
        esac
        case "$cur" in
        --config=*)
                __git_complete_config_variable_name_and_value \
                        --cur="${cur##--config=}"
                return
                ;;
        --*)
                __gitcomp_builtin clone
                return
                ;;
        esac
}

__git_untracked_file_modes="all no normal"

_git_commit ()
{
        case "$prev" in
        -c|-C)
                __git_complete_refs
                return
                ;;
        esac

        case "$cur" in
        --cleanup=*)
                __gitcomp "default scissors strip verbatim whitespace
                        " "" "${cur##--cleanup=}"
                return
                ;;
        --reuse-message=*|--reedit-message=*|\
        --fixup=*|--squash=*)
                __git_complete_refs --cur="${cur#*=}"
                return
                ;;
        --untracked-files=*)
                __gitcomp "$__git_untracked_file_modes" "" "${cur##--untracked-files=}"
                return
                ;;
        --*)
                __gitcomp_builtin commit
                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_builtin describe
                return
        esac
        __git_complete_refs
}

__git_diff_algorithms="myers minimal patience histogram"

__git_diff_submodule_formats="diff log short"

__git_color_moved_opts="no default plain blocks zebra dimmed-zebra"

__git_color_moved_ws_opts="no ignore-space-at-eol ignore-space-change
                        ignore-all-space allow-indentation-change"

__git_diff_common_options="--stat --numstat --shortstat --summary
                        --patch-with-stat --name-only --name-status --color
                        --no-color --color-words --no-renames --check
                        --color-moved --color-moved= --no-color-moved
                        --color-moved-ws= --no-color-moved-ws
                        --full-index --binary --abbrev --diff-filter=
                        --find-copies-harder --ignore-cr-at-eol
                        --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=
                        --submodule --submodule= --ignore-submodules
                        --indent-heuristic --no-indent-heuristic
                        --textconv --no-textconv
"

_git_diff ()
{
        __git_has_doubledash && return

        case "$cur" in
        --diff-algorithm=*)
                __gitcomp "$__git_diff_algorithms" "" "${cur##--diff-algorithm=}"
                return
                ;;
        --submodule=*)
                __gitcomp "$__git_diff_submodule_formats" "" "${cur##--submodule=}"
                return
                ;;
        --color-moved=*)
                __gitcomp "$__git_color_moved_opts" "" "${cur##--color-moved=}"
                return
                ;;
        --color-moved-ws=*)
                __gitcomp "$__git_color_moved_ws_opts" "" "${cur##--color-moved-ws=}"
                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 smerge
"

_git_difftool ()
{
        __git_has_doubledash && return

        case "$cur" in
        --tool=*)
                __gitcomp "$__git_mergetools_common kompare" "" "${cur##--tool=}"
                return
                ;;
        --*)
                __gitcomp_builtin difftool "$__git_diff_common_options
                                        --base --cached --ours --theirs
                                        --pickaxe-all --pickaxe-regex
                                        --relative --staged
                                        "
                return
                ;;
        esac
        __git_complete_revlist_file
}

__git_fetch_recurse_submodules="yes on-demand no"

_git_fetch ()
{
        case "$cur" in
        --recurse-submodules=*)
                __gitcomp "$__git_fetch_recurse_submodules" "" "${cur##--recurse-submodules=}"
                return
                ;;
        --filter=*)
                __gitcomp "blob:none blob:limit= sparse:oid=" "" "${cur##--filter=}"
                return
                ;;
        --*)
                __gitcomp_builtin fetch
                return
                ;;
        esac
        __git_complete_remote_or_refspec
}

__git_format_patch_extra_options="
        --full-index --not --all --no-prefix --src-prefix=
        --dst-prefix= --notes
"

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

_git_fsck ()
{
        case "$cur" in
        --*)
                __gitcomp_builtin fsck
                return
                ;;
        esac
}

_git_gitk ()
{
        _gitk
}

# Lists matching symbol names from a tag (as in ctags) file.
# 1: List symbol names matching this word.
# 2: The tag file to list symbol names from.
# 3: A prefix to be added to each listed symbol name (optional).
# 4: A suffix to be appended to each listed symbol name (optional).
__git_match_ctag () {
        awk -v pfx="${3-}" -v sfx="${4-}" "
                /^${1//\//\\/}/ { print pfx \$1 sfx }
                " "$2"
}

# Complete symbol names from a tag file.
# Usage: __git_complete_symbol [<option>]...
# --tags=<file>: The tag file to list symbol names from instead of the
#                default "tags".
# --pfx=<prefix>: A prefix to be added to each symbol name.
# --cur=<word>: The current symbol name to be completed.  Defaults to
#               the current word to be completed.
# --sfx=<suffix>: A suffix to be appended to each symbol name instead
#                 of the default space.
__git_complete_symbol () {
        local tags=tags pfx="" cur_="${cur-}" sfx=" "

        while test $# != 0; do
                case "$1" in
                --tags=*)       tags="${1##--tags=}" ;;
                --pfx=*)        pfx="${1##--pfx=}" ;;
                --cur=*)        cur_="${1##--cur=}" ;;
                --sfx=*)        sfx="${1##--sfx=}" ;;
                *)              return 1 ;;
                esac
                shift
        done

        if test -r "$tags"; then
                __gitcomp_direct "$(__git_match_ctag "$cur_" "$tags" "$pfx" "$sfx")"
        fi
}

_git_grep ()
{
        __git_has_doubledash && return

        case "$cur" in
        --*)
                __gitcomp_builtin grep
                return
                ;;
        esac

        case "$cword,$prev" in
        2,*|*,-*)
                __git_complete_symbol && return
                ;;
        esac

        __git_complete_refs
}

_git_help ()
{
        case "$cur" in
        --*)
                __gitcomp_builtin help
                return
                ;;
        esac
        if test -n "$GIT_TESTING_ALL_COMMAND_LIST"
        then
                __gitcomp "$GIT_TESTING_ALL_COMMAND_LIST $(__git --list-cmds=alias,list-guide) gitk"
        else
                __gitcomp "$(__git --list-cmds=main,nohelpers,alias,list-guide) gitk"
        fi
}

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

_git_ls_files ()
{
        case "$cur" in
        --*)
                __gitcomp_builtin ls-files
                return
                ;;
        esac

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

_git_ls_remote ()
{
        case "$cur" in
        --*)
                __gitcomp_builtin ls-remote
                return
                ;;
        esac
        __gitcomp_nl "$(__git_remotes)"
}

_git_ls_tree ()
{
        case "$cur" in
        --*)
                __gitcomp_builtin ls-tree
                return
                ;;
        esac

        __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 reference email raw format: tformat: mboxrd"
__git_log_date_formats="relative iso8601 iso8601-strict rfc2822 short local default raw unix format:"

_git_log ()
{
        __git_has_doubledash && return
        __git_find_repo_path

        local merge=""
        if [ -f "$__git_repo_path/MERGE_HEAD" ]; then
                merge="--merge"
        fi
        case "$prev,$cur" in
        -L,:*:*)
                return  # fall back to Bash filename completion
                ;;
        -L,:*)
                __git_complete_symbol --cur="${cur#:}" --sfx=":"
                return
                ;;
        -G,*|-S,*)
                __git_complete_symbol
                return
                ;;
        esac
        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" "" "${cur##--decorate=}"
                return
                ;;
        --diff-algorithm=*)
                __gitcomp "$__git_diff_algorithms" "" "${cur##--diff-algorithm=}"
                return
                ;;
        --submodule=*)
                __gitcomp "$__git_diff_submodule_formats" "" "${cur##--submodule=}"
                return
                ;;
        --no-walk=*)
                __gitcomp "sorted unsorted" "" "${cur##--no-walk=}"
                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 --no-abbrev-commit --abbrev=
                        --relative-date --date=
                        --pretty= --format= --oneline
                        --show-signature
                        --cherry-mark
                        --cherry-pick
                        --graph
                        --decorate --decorate= --no-decorate
                        --walk-reflogs
                        --no-walk --no-walk= --do-walk
                        --parents --children
                        --expand-tabs --expand-tabs= --no-expand-tabs
                        --patch
                        $merge
                        $__git_diff_common_options
                        --pickaxe-all --pickaxe-regex
                        --patch --no-patch
                        "
                return
                ;;
        -L:*:*)
                return  # fall back to Bash filename completion
                ;;
        -L:*)
                __git_complete_symbol --cur="${cur#-L:}" --sfx=":"
                return
                ;;
        -G*)
                __git_complete_symbol --pfx="-G" --cur="${cur#-G}"
                return
                ;;
        -S*)
                __git_complete_symbol --pfx="-S" --cur="${cur#-S}"
                return
                ;;
        esac
        __git_complete_revlist
}

_git_merge ()
{
        __git_complete_strategy && return

        case "$cur" in
        --*)
                __gitcomp_builtin merge
                return
        esac
        __git_complete_refs
}

_git_mergetool ()
{
        case "$cur" in
        --tool=*)
                __gitcomp "$__git_mergetools_common tortoisemerge" "" "${cur##--tool=}"
                return
                ;;
        --*)
                __gitcomp "--tool= --prompt --no-prompt --gui --no-gui"
                return
                ;;
        esac
}

_git_merge_base ()
{
        case "$cur" in
        --*)
                __gitcomp_builtin merge-base
                return
                ;;
        esac
        __git_complete_refs
}

_git_mv ()
{
        case "$cur" in
        --*)
                __gitcomp_builtin mv
                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_notes ()
{
        local subcommands='add append copy edit get-ref list merge prune remove show'
        local subcommand="$(__git_find_on_cmdline "$subcommands")"

        case "$subcommand,$cur" in
        ,--*)
                __gitcomp_builtin notes
                ;;
        ,*)
                case "$prev" in
                --ref)
                        __git_complete_refs
                        ;;
                *)
                        __gitcomp "$subcommands --ref"
                        ;;
                esac
                ;;
        *,--reuse-message=*|*,--reedit-message=*)
                __git_complete_refs --cur="${cur#*=}"
                ;;
        *,--*)
                __gitcomp_builtin notes_$subcommand
                ;;
        prune,*|get-ref,*)
                # this command does not take a ref, do not complete it
                ;;
        *)
                case "$prev" in
                -m|-F)
                        ;;
                *)
                        __git_complete_refs
                        ;;
                esac
                ;;
        esac
}

_git_pull ()
{
        __git_complete_strategy && return

        case "$cur" in
        --recurse-submodules=*)
                __gitcomp "$__git_fetch_recurse_submodules" "" "${cur##--recurse-submodules=}"
                return
                ;;
        --*)
                __gitcomp_builtin pull

                return
                ;;
        esac
        __git_complete_remote_or_refspec
}

__git_push_recurse_submodules="check on-demand only"

__git_complete_force_with_lease ()
{
        local cur_=$1

        case "$cur_" in
        --*=)
                ;;
        *:*)
                __git_complete_refs --cur="${cur_#*:}"
                ;;
        *)
                __git_complete_refs --cur="$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_builtin push
                return
                ;;
        esac
        __git_complete_remote_or_refspec
}

_git_range_diff ()
{
        case "$cur" in
        --*)
                __gitcomp "
                        --creation-factor= --no-dual-color
                        $__git_diff_common_options
                "
                return
                ;;
        esac
        __git_complete_revlist
}

__git_rebase_inprogress_options="--continue --skip --abort --quit --show-current-patch"
__git_rebase_interactive_inprogress_options="$__git_rebase_inprogress_options --edit-todo"

_git_rebase ()
{
        __git_find_repo_path
        if [ -f "$__git_repo_path"/rebase-merge/interactive ]; then
                __gitcomp "$__git_rebase_interactive_inprogress_options"
                return
        elif [ -d "$__git_repo_path"/rebase-apply ] || \
             [ -d "$__git_repo_path"/rebase-merge ]; then
                __gitcomp "$__git_rebase_inprogress_options"
                return
        fi
        __git_complete_strategy && return
        case "$cur" in
        --whitespace=*)
                __gitcomp "$__git_whitespacelist" "" "${cur##--whitespace=}"
                return
                ;;
        --onto=*)
                __git_complete_refs --cur="${cur##--onto=}"
                return
                ;;
        --*)
                __gitcomp_builtin rebase "" \
                        "$__git_rebase_interactive_inprogress_options"

                return
        esac
        __git_complete_refs
}

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

        if [ -z "$subcommand" ]; then
                __gitcomp "$subcommands"
        else
                __git_complete_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 send-email --dump-aliases)"
                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 "$(__git send-email --dump-aliases)" "" "${cur#--*=}"
                return
                ;;
        --*)
                __gitcomp_builtin send-email "--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 --reply-to
                        --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_extra_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_builtin status
                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_switch ()
{
        case "$cur" in
        --conflict=*)
                __gitcomp "diff3 merge" "" "${cur##--conflict=}"
                ;;
        --*)
                __gitcomp_builtin switch
                ;;
        *)
                local dwim_opt="$(__git_checkout_default_dwim_mode)"
                local prevword prevword="${words[cword-1]}"

                case "$prevword" in
                        -c|-C|--orphan)
                                # Complete local branches (and DWIM branch
                                # remote branch names) for an option argument
                                # specifying a new branch name. This is for
                                # convenience, assuming new branches are
                                # possibly based on pre-existing branch names.
                                __git_complete_refs $dwim_opt --mode="heads"
                                return
                                ;;
                        *)
                                ;;
                esac

                # Unlike in git checkout, git switch --orphan does not take
                # a start point. Thus we really have nothing to complete after
                # the branch name.
                if [ -n "$(__git_find_on_cmdline "--orphan")" ]; then
                        return
                fi

                # At this point, we've already handled special completion for
                # -c/-C, and --orphan. There are 3 main things left to
                # complete:
                # 1) a start-point for -c/-C or -d/--detach
                # 2) a remote head, for --track
                # 3) a branch name, possibly including DWIM remote branches

                if [ -n "$(__git_find_on_cmdline "-c -C -d --detach")" ]; then
                        __git_complete_refs --mode="refs"
                elif [ -n "$(__git_find_on_cmdline "--track")" ]; then
                        __git_complete_refs --mode="remote-heads"
                else
                        __git_complete_refs $dwim_opt --mode="heads"
                fi
                ;;
        esac
}

__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 config $config_file --name-only --list
}

__git_config_vars=
__git_compute_config_vars ()
{
        test -n "$__git_config_vars" ||
        __git_config_vars="$(git help --config-for-completion | sort -u)"
}

# Completes possible values of various configuration variables.
#
# Usage: __git_complete_config_variable_value [<option>]...
# --varname=<word>: The name of the configuration variable whose value is
#                   to be completed.  Defaults to the previous word on the
#                   command line.
# --cur=<word>: The current value to be completed.  Defaults to the current
#               word to be completed.
__git_complete_config_variable_value ()
{
        local varname="$prev" cur_="$cur"

        while test $# != 0; do
                case "$1" in
                --varname=*)    varname="${1##--varname=}" ;;
                --cur=*)        cur_="${1##--cur=}" ;;
                *)              return 1 ;;
                esac
                shift
        done

        if [ "${BASH_VERSINFO[0]:-0}" -ge 4 ]; then
                varname="${varname,,}"
        else
                varname="$(echo "$varname" |tr A-Z a-z)"
        fi

        case "$varname" in
        branch.*.remote|branch.*.pushremote)
                __gitcomp_nl "$(__git_remotes)" "" "$cur_"
                return
                ;;
        branch.*.merge)
                __git_complete_refs --cur="$cur_"
                return
                ;;
        branch.*.rebase)
                __gitcomp "false true merges preserve interactive" "" "$cur_"
                return
                ;;
        remote.pushdefault)
                __gitcomp_nl "$(__git_remotes)" "" "$cur_"
                return
                ;;
        remote.*.fetch)
                local remote="${varname#remote.}"
                remote="${remote%.fetch}"
                if [ -z "$cur_" ]; then
                        __gitcomp_nl "refs/heads/" "" "" ""
                        return
                fi
                __gitcomp_nl "$(__git_refs_remotes "$remote")" "" "$cur_"
                return
                ;;
        remote.*.push)
                local remote="${varname#remote.}"
                remote="${remote%.push}"
                __gitcomp_nl "$(__git for-each-ref \
                        --format='%(refname):%(refname)' refs/heads)" "" "$cur_"
                return
                ;;
        pull.twohead|pull.octopus)
                __git_compute_merge_strategies
                __gitcomp "$__git_merge_strategies" "" "$cur_"
                return
                ;;
        color.pager)
                __gitcomp "false true" "" "$cur_"
                return
                ;;
        color.*.*)
                __gitcomp "
                        normal black red green yellow blue magenta cyan white
                        bold dim ul blink reverse
                        " "" "$cur_"
                return
                ;;
        color.*)
                __gitcomp "false true always never auto" "" "$cur_"
                return
                ;;
        diff.submodule)
                __gitcomp "$__git_diff_submodule_formats" "" "$cur_"
                return
                ;;
        help.format)
                __gitcomp "man info web html" "" "$cur_"
                return
                ;;
        log.date)
                __gitcomp "$__git_log_date_formats" "" "$cur_"
                return
                ;;
        sendemail.aliasfiletype)
                __gitcomp "mutt mailrc pine elm gnus" "" "$cur_"
                return
                ;;
        sendemail.confirm)
                __gitcomp "$__git_send_email_confirm_options" "" "$cur_"
                return
                ;;
        sendemail.suppresscc)
                __gitcomp "$__git_send_email_suppresscc_options" "" "$cur_"
                return
                ;;
        sendemail.transferencoding)
                __gitcomp "7bit 8bit quoted-printable base64" "" "$cur_"
                return
                ;;
        *.*)
                return
                ;;
        esac
}

# Completes configuration sections, subsections, variable names.
#
# Usage: __git_complete_config_variable_name [<option>]...
# --cur=<word>: The current configuration section/variable name to be
#               completed.  Defaults to the current word to be completed.
# --sfx=<suffix>: A suffix to be appended to each fully completed
#                 configuration variable name (but not to sections or
#                 subsections) instead of the default space.
__git_complete_config_variable_name ()
{
        local cur_="$cur" sfx

        while test $# != 0; do
                case "$1" in
                --cur=*)        cur_="${1##--cur=}" ;;
                --sfx=*)        sfx="${1##--sfx=}" ;;
                *)              return 1 ;;
                esac
                shift
        done

        case "$cur_" in
        branch.*.*)
                local pfx="${cur_%.*}."
                cur_="${cur_##*.}"
                __gitcomp "remote pushRemote merge mergeOptions rebase" "$pfx" "$cur_" "$sfx"
                return
                ;;
        branch.*)
                local pfx="${cur%.*}."
                cur_="${cur#*.}"
                __gitcomp_direct "$(__git_heads "$pfx" "$cur_" ".")"
                __gitcomp_nl_append $'autoSetupMerge\nautoSetupRebase\n' "$pfx" "$cur_" "$sfx"
                return
                ;;
        guitool.*.*)
                local pfx="${cur_%.*}."
                cur_="${cur_##*.}"
                __gitcomp "
                        argPrompt cmd confirm needsFile noConsole noRescan
                        prompt revPrompt revUnmerged title
                        " "$pfx" "$cur_" "$sfx"
                return
                ;;
        difftool.*.*)
                local pfx="${cur_%.*}."
                cur_="${cur_##*.}"
                __gitcomp "cmd path" "$pfx" "$cur_" "$sfx"
                return
                ;;
        man.*.*)
                local pfx="${cur_%.*}."
                cur_="${cur_##*.}"
                __gitcomp "cmd path" "$pfx" "$cur_" "$sfx"
                return
                ;;
        mergetool.*.*)
                local pfx="${cur_%.*}."
                cur_="${cur_##*.}"
                __gitcomp "cmd path trustExitCode" "$pfx" "$cur_" "$sfx"
                return
                ;;
        pager.*)
                local pfx="${cur_%.*}."
                cur_="${cur_#*.}"
                __git_compute_all_commands
                __gitcomp_nl "$__git_all_commands" "$pfx" "$cur_" "$sfx"
                return
                ;;
        remote.*.*)
                local pfx="${cur_%.*}."
                cur_="${cur_##*.}"
                __gitcomp "
                        url proxy fetch push mirror skipDefaultUpdate
                        receivepack uploadpack tagOpt pushurl
                        " "$pfx" "$cur_" "$sfx"
                return
                ;;
        remote.*)
                local pfx="${cur_%.*}."
                cur_="${cur_#*.}"
                __gitcomp_nl "$(__git_remotes)" "$pfx" "$cur_" "."
                __gitcomp_nl_append "pushDefault" "$pfx" "$cur_" "$sfx"
                return
                ;;
        url.*.*)
                local pfx="${cur_%.*}."
                cur_="${cur_##*.}"
                __gitcomp "insteadOf pushInsteadOf" "$pfx" "$cur_" "$sfx"
                return
                ;;
        *.*)
                __git_compute_config_vars
                __gitcomp "$__git_config_vars" "" "$cur_" "$sfx"
                ;;
        *)
                __git_compute_config_vars
                __gitcomp "$(echo "$__git_config_vars" |
                                awk -F . '{
                                        sections[$1] = 1
                                }
                                END {
                                        for (s in sections)
                                                print s "."
                                }
                                ')" "" "$cur_"
                ;;
        esac
}

# Completes '='-separated configuration sections/variable names and values
# for 'git -c section.name=value'.
#
# Usage: __git_complete_config_variable_name_and_value [<option>]...
# --cur=<word>: The current configuration section/variable name/value to be
#               completed. Defaults to the current word to be completed.
__git_complete_config_variable_name_and_value ()
{
        local cur_="$cur"

        while test $# != 0; do
                case "$1" in
                --cur=*)        cur_="${1##--cur=}" ;;
                *)              return 1 ;;
                esac
                shift
        done

        case "$cur_" in
        *=*)
                __git_complete_config_variable_value \
                        --varname="${cur_%%=*}" --cur="${cur_#*=}"
                ;;
        *)
                __git_complete_config_variable_name --cur="$cur_" --sfx='='
                ;;
        esac
}

_git_config ()
{
        case "$prev" in
        --get|--get-all|--unset|--unset-all)
                __gitcomp_nl "$(__git_config_get_set_variables)"
                return
                ;;
        *.*)
                __git_complete_config_variable_value
                return
                ;;
        esac
        case "$cur" in
        --*)
                __gitcomp_builtin config
                ;;
        *)
                __git_complete_config_variable_name
                ;;
        esac
}

_git_remote ()
{
        local subcommands="
                add rename remove set-head set-branches
                get-url set-url show prune update
                "
        local subcommand="$(__git_find_on_cmdline "$subcommands")"
        if [ -z "$subcommand" ]; then
                case "$cur" in
                --*)
                        __gitcomp_builtin remote
                        ;;
                *)
                        __gitcomp "$subcommands"
                        ;;
                esac
                return
        fi

        case "$subcommand,$cur" in
        add,--*)
                __gitcomp_builtin remote_add
                ;;
        add,*)
                ;;
        set-head,--*)
                __gitcomp_builtin remote_set-head
                ;;
        set-branches,--*)
                __gitcomp_builtin remote_set-branches
                ;;
        set-head,*|set-branches,*)
                __git_complete_remote_or_refspec
                ;;
        update,--*)
                __gitcomp_builtin remote_update
                ;;
        update,*)
                __gitcomp "$(__git_remotes) $(__git_get_config_variables "remotes")"
                ;;
        set-url,--*)
                __gitcomp_builtin remote_set-url
                ;;
        get-url,--*)
                __gitcomp_builtin remote_get-url
                ;;
        prune,--*)
                __gitcomp_builtin remote_prune
                ;;
        *)
                __gitcomp_nl "$(__git_remotes)"
                ;;
        esac
}

_git_replace ()
{
        case "$cur" in
        --format=*)
                __gitcomp "short medium long" "" "${cur##--format=}"
                return
                ;;
        --*)
                __gitcomp_builtin replace
                return
                ;;
        esac
        __git_complete_refs
}

_git_rerere ()
{
        local subcommands="clear forget diff remaining status gc"
        local subcommand="$(__git_find_on_cmdline "$subcommands")"
        if test -z "$subcommand"
        then
                __gitcomp "$subcommands"
                return
        fi
}

_git_reset ()
{
        __git_has_doubledash && return

        case "$cur" in
        --*)
                __gitcomp_builtin reset
                return
                ;;
        esac
        __git_complete_refs
}

_git_restore ()
{
        case "$cur" in
        --conflict=*)
                __gitcomp "diff3 merge" "" "${cur##--conflict=}"
                ;;
        --source=*)
                __git_complete_refs --cur="${cur##--source=}"
                ;;
        --*)
                __gitcomp_builtin restore
                ;;
        esac
}

__git_revert_inprogress_options=$__git_sequencer_inprogress_options

_git_revert ()
{
        __git_find_repo_path
        if [ -f "$__git_repo_path"/REVERT_HEAD ]; then
                __gitcomp "$__git_revert_inprogress_options"
                return
        fi
        __git_complete_strategy && return
        case "$cur" in
        --*)
                __gitcomp_builtin revert "" \
                        "$__git_revert_inprogress_options"
                return
                ;;
        esac
        __git_complete_refs
}

_git_rm ()
{
        case "$cur" in
        --*)
                __gitcomp_builtin rm
                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 --email
                        "
                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
                ;;
        --submodule=*)
                __gitcomp "$__git_diff_submodule_formats" "" "${cur##--submodule=}"
                return
                ;;
        --color-moved=*)
                __gitcomp "$__git_color_moved_opts" "" "${cur##--color-moved=}"
                return
                ;;
        --color-moved-ws=*)
                __gitcomp "$__git_color_moved_ws_opts" "" "${cur##--color-moved-ws=}"
                return
                ;;
        --*)
                __gitcomp "--pretty= --format= --abbrev-commit --no-abbrev-commit
                        --oneline --show-signature --patch
                        --expand-tabs --expand-tabs= --no-expand-tabs
                        $__git_diff_common_options
                        "
                return
                ;;
        esac
        __git_complete_revlist_file
}

_git_show_branch ()
{
        case "$cur" in
        --*)
                __gitcomp_builtin show-branch
                return
                ;;
        esac
        __git_complete_revlist
}

_git_sparse_checkout ()
{
        local subcommands="list init set disable"
        local subcommand="$(__git_find_on_cmdline "$subcommands")"
        if [ -z "$subcommand" ]; then
                __gitcomp "$subcommands"
                return
        fi

        case "$subcommand,$cur" in
        init,--*)
                __gitcomp "--cone"
                ;;
        set,--*)
                __gitcomp "--stdin"
                ;;
        *)
                ;;
        esac
}

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

_git_submodule ()
{
        __git_has_doubledash && return

        local subcommands="add status init deinit update set-branch set-url summary foreach sync absorbgitdirs"
        local subcommand="$(__git_find_on_cmdline "$subcommands")"
        if [ -z "$subcommand" ]; then
                case "$cur" in
                --*)
                        __gitcomp "--quiet"
                        ;;
                *)
                        __gitcomp "$subcommands"
                        ;;
                esac
                return
        fi

        case "$subcommand,$cur" in
        add,--*)
                __gitcomp "--branch --force --name --reference --depth"
                ;;
        status,--*)
                __gitcomp "--cached --recursive"
                ;;
        deinit,--*)
                __gitcomp "--force --all"
                ;;
        update,--*)
                __gitcomp "
                        --init --remote --no-fetch
                        --recommend-shallow --no-recommend-shallow
                        --force --rebase --merge --reference --depth --recursive --jobs
                "
                ;;
        set-branch,--*)
                __gitcomp "--default --branch"
                ;;
        summary,--*)
                __gitcomp "--cached --files --summary-limit"
                ;;
        foreach,--*|sync,--*)
                __gitcomp "--recursive"
                ;;
        *)
                ;;
        esac
}

_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
                        --add-author-from
                        --recursive
                        --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= $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 "$i" in
                -d|--delete|-v|--verify)
                        __gitcomp_direct "$(__git_tags "" "$cur" " ")"
                        return
                        ;;
                -f)
                        f=1
                        ;;
                esac
                ((c++))
        done

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

        case "$cur" in
        --*)
                __gitcomp_builtin tag
                ;;
        esac
}

_git_whatchanged ()
{
        _git_log
}

__git_complete_worktree_paths ()
{
        local IFS=$'\n'
        __gitcomp_nl "$(git worktree list --porcelain |
                # Skip the first entry: it's the path of the main worktree,
                # which can't be moved, removed, locked, etc.
                sed -n -e '2,$ s/^worktree //p')"
}

_git_worktree ()
{
        local subcommands="add list lock move prune remove unlock"
        local subcommand subcommand_idx

        subcommand="$(__git_find_on_cmdline --show-idx "$subcommands")"
        subcommand_idx="${subcommand% *}"
        subcommand="${subcommand#* }"

        case "$subcommand,$cur" in
        ,*)
                __gitcomp "$subcommands"
                ;;
        *,--*)
                __gitcomp_builtin worktree_$subcommand
                ;;
        add,*)  # usage: git worktree add [<options>] <path> [<commit-ish>]
                # Here we are not completing an --option, it's either the
                # path or a ref.
                case "$prev" in
                -b|-B)  # Complete refs for branch to be created/reseted.
                        __git_complete_refs
                        ;;
                -*)     # The previous word is an -o|--option without an
                        # unstuck argument: have to complete the path for
                        # the new worktree, so don't list anything, but let
                        # Bash fall back to filename completion.
                        ;;
                *)      # The previous word is not an --option, so it must
                        # be either the 'add' subcommand, the unstuck
                        # argument of an option (e.g. branch for -b|-B), or
                        # the path for the new worktree.
                        if [ $cword -eq $((subcommand_idx+1)) ]; then
                                # Right after the 'add' subcommand: have to
                                # complete the path, so fall back to Bash
                                # filename completion.
                                :
                        else
                                case "${words[cword-2]}" in
                                -b|-B)  # After '-b <branch>': have to
                                        # complete the path, so fall back
                                        # to Bash filename completion.
                                        ;;
                                *)      # After the path: have to complete
                                        # the ref to be checked out.
                                        __git_complete_refs
                                        ;;
                                esac
                        fi
                        ;;
                esac
                ;;
        lock,*|remove,*|unlock,*)
                __git_complete_worktree_paths
                ;;
        move,*)
                if [ $cword -eq $((subcommand_idx+1)) ]; then
                        # The first parameter must be an existing working
                        # tree to be moved.
                        __git_complete_worktree_paths
                else
                        # The second parameter is the destination: it could
                        # be any path, so don't list anything, but let Bash
                        # fall back to filename completion.
                        :
                fi
                ;;
        esac
}

__git_complete_common () {
        local command="$1"

        case "$cur" in
        --*)
                __gitcomp_builtin "$command"
                ;;
        esac
}

__git_cmds_with_parseopt_helper=
__git_support_parseopt_helper () {
        test -n "$__git_cmds_with_parseopt_helper" ||
                __git_cmds_with_parseopt_helper="$(__git --list-cmds=parseopt)"

        case " $__git_cmds_with_parseopt_helper " in
        *" $1 "*)
                return 0
                ;;
        *)
                return 1
                ;;
        esac
}

__git_complete_command () {
        local command="$1"
        local completion_func="_git_${command//-/_}"
        if ! declare -f $completion_func >/dev/null 2>/dev/null &&
                declare -f _completion_loader >/dev/null 2>/dev/null
        then
                _completion_loader "git-$command"
        fi
        if declare -f $completion_func >/dev/null 2>/dev/null
        then
                $completion_func
                return 0
        elif __git_support_parseopt_helper "$command"
        then
                __git_complete_common "$command"
                return 0
        else
                return 1
        fi
}

__git_main ()
{
        local i c=1 command __git_dir __git_repo_path
        local __git_C_args C_args_count=0

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

        if [ -z "${command-}" ]; then
                case "$prev" in
                --git-dir|-C|--work-tree)
                        # these need a path argument, let's fall back to
                        # Bash filename completion
                        return
                        ;;
                -c)
                        __git_complete_config_variable_name_and_value
                        return
                        ;;
                --namespace)
                        # we don't support completing these options' arguments
                        return
                        ;;
                esac
                case "$cur" in
                --*)   __gitcomp "
                        --paginate
                        --no-pager
                        --git-dir=
                        --bare
                        --version
                        --exec-path
                        --exec-path=
                        --html-path
                        --man-path
                        --info-path
                        --work-tree=
                        --namespace=
                        --no-replace-objects
                        --help
                        "
                        ;;
                *)
                        if test -n "${GIT_TESTING_PORCELAIN_COMMAND_LIST-}"
                        then
                                __gitcomp "$GIT_TESTING_PORCELAIN_COMMAND_LIST"
                        else
                                __gitcomp "$(__git --list-cmds=list-mainporcelain,others,nohelpers,alias,list-complete,config)"
                        fi
                        ;;
                esac
                return
        fi

        __git_complete_command "$command" && return

        local expansion=$(__git_aliased_command "$command")
        if [ -n "$expansion" ]; then
                words[1]=$expansion
                __git_complete_command "$expansion"
        fi
}

__gitk_main ()
{
        __git_has_doubledash && return

        local __git_repo_path
        __git_find_repo_path

        local merge=""
        if [ -f "$__git_repo_path/MERGE_HEAD" ]; then
                merge="--merge"
        fi
        case "$cur" in
        --*)
                __gitcomp "
                        $__git_log_common_options
                        $__git_log_gitk_options
                        $merge
                        "
                return
                ;;
        esac
        __git_complete_revlist
}

if [[ -n ${ZSH_VERSION-} ]] &&
   # Don't define these functions when sourced from 'git-completion.zsh',
   # it has its own implementations.
   [[ -z ${GIT_SOURCING_ZSH_COMPLETION-} ]]; 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_direct ()
        {
                emulate -L zsh

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

        __gitcomp_nl ()
        {
                emulate -L zsh

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

        __gitcomp_file_direct ()
        {
                emulate -L zsh

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

        __gitcomp_file ()
        {
                emulate -L zsh

                local IFS=$'\n'
                compset -P '*[=:]'
                compadd -p "${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