.git-completion.bash

#!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'
#    *) tree paths within 'ref:path/to/file' expressions
#    *) common --long-options
#
# To use these routines:
#
#    1) Copy this file to somewhere (e.g. ~/.git-completion.sh).
#    2) Add the following line to your .bashrc/.zshrc:
#        source ~/.git-completion.sh
#
#    3) Consider changing your PS1 to also show the current branch:
#         Bash: PS1='[\u@\h \W$(__git_ps1 " (%s)")]\$ '
#         ZSH:  PS1='[%n@%m %c$(__git_ps1 " (%s)")]\$ '
#
#       The argument to __git_ps1 will be displayed only if you
#       are currently in a git repository.  The %s token will be
#       the name of the current branch.
#
#       In addition, if you set GIT_PS1_SHOWDIRTYSTATE to a nonempty
#       value, unstaged (*) and staged (+) changes will be shown next
#       to the branch name.  You can configure this per-repository
#       with the bash.showDirtyState variable, which defaults to true
#       once GIT_PS1_SHOWDIRTYSTATE is enabled.
#
#       You can also see if currently something is stashed, by setting
#       GIT_PS1_SHOWSTASHSTATE to a nonempty value. If something is stashed,
#       then a '$' will be shown next to the branch name.
#
#       If you would like to see if there're untracked files, then you can
#       set GIT_PS1_SHOWUNTRACKEDFILES to a nonempty value. If there're
#       untracked files, then a '%' will be shown next to the branch name.
#
#       If you would like to see the difference between HEAD and its
#       upstream, set GIT_PS1_SHOWUPSTREAM="auto".  A "<" indicates
#       you are behind, ">" indicates you are ahead, and "<>"
#       indicates you have diverged.  You can further control
#       behaviour by setting GIT_PS1_SHOWUPSTREAM to a space-separated
#       list of values:
#           verbose       show number of commits ahead/behind (+/-) upstream
#           legacy        don't use the '--count' option available in recent
#                         versions of git-rev-list
#           git           always compare HEAD to @{upstream}
#           svn           always compare HEAD to your SVN upstream
#       By default, __git_ps1 will compare HEAD to your SVN upstream
#       if it can find one, or @{upstream} otherwise.  Once you have
#       set GIT_PS1_SHOWUPSTREAM, you can override it on a
#       per-repository basis by setting the bash.showUpstream config
#       variable.
#

if [[ -n ${ZSH_VERSION-} ]]; then
  autoload -U +X bashcompinit && bashcompinit
fi

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

# __gitdir accepts 0 or 1 arguments (i.e., location)
# returns location of .git repo
__gitdir ()
{
  if [ -z "${1-}" ]; then
    if [ -n "${__git_dir-}" ]; then
      echo "$__git_dir"
    elif [ -d .git ]; then
      echo .git
    else
      git rev-parse --git-dir 2>/dev/null
    fi
  elif [ -d "$1/.git" ]; then
    echo "$1/.git"
  else
    echo "$1"
  fi
}

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

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

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

  # Find our upstream
  case "$upstream" in
  git)    upstream="@{upstream}" ;;
  svn*)
    # get the upstream from the "git-svn-id: ..." in a commit message
    # (git-svn uses essentially the same procedure internally)
    local svn_upstream=($(git log --first-parent -1 \
          --grep="^git-svn-id: \(${svn_url_pattern#??}\)" 2>/dev/null))
    if [[ 0 -ne ${#svn_upstream[@]} ]]; then
      svn_upstream=${svn_upstream[ ${#svn_upstream[@]} - 2 ]}
      svn_upstream=${svn_upstream%@*}
      local n_stop="${#svn_remote[@]}"
      for ((n=1; n <= n_stop; n++)); do
        svn_upstream=${svn_upstream#${svn_remote[$n]}}
      done

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

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

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

}


# __git_ps1 accepts 0 or 1 arguments (i.e., format string)
# returns text to add to bash PS1 prompt (includes branch name)
__git_ps1 ()
{
  local g="$(__gitdir)"
  if [ -n "$g" ]; then
    local r=""
    local b=""
    if [ -f "$g/rebase-merge/interactive" ]; then
      r="|REBASE-i"
      b="$(cat "$g/rebase-merge/head-name")"
    elif [ -d "$g/rebase-merge" ]; then
      r="|REBASE-m"
      b="$(cat "$g/rebase-merge/head-name")"
    else
      if [ -d "$g/rebase-apply" ]; then
        if [ -f "$g/rebase-apply/rebasing" ]; then
          r="|REBASE"
        elif [ -f "$g/rebase-apply/applying" ]; then
          r="|AM"
        else
          r="|AM/REBASE"
        fi
      elif [ -f "$g/MERGE_HEAD" ]; then
        r="|MERGING"
      elif [ -f "$g/CHERRY_PICK_HEAD" ]; then
        r="|CHERRY-PICKING"
      elif [ -f "$g/BISECT_LOG" ]; then
        r="|BISECTING"
      fi

      b="$(git symbolic-ref HEAD 2>/dev/null)" || {

        b="$(
        case "${GIT_PS1_DESCRIBE_STYLE-}" in
        (contains)
          git describe --contains HEAD ;;
        (branch)
          git describe --contains --all HEAD ;;
        (describe)
          git describe HEAD ;;
        (* | default)
          git describe --tags --exact-match HEAD ;;
        esac 2>/dev/null)" ||

        b="$(cut -c1-7 "$g/HEAD" 2>/dev/null)..." ||
        b="unknown"
        b="($b)"
      }
    fi

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

    if [ "true" = "$(git rev-parse --is-inside-git-dir 2>/dev/null)" ]; then
      if [ "true" = "$(git rev-parse --is-bare-repository 2>/dev/null)" ]; then
        c="BARE:"
      else
        b="GIT_DIR!"
      fi
    elif [ "true" = "$(git rev-parse --is-inside-work-tree 2>/dev/null)" ]; then
      if [ -n "${GIT_PS1_SHOWDIRTYSTATE-}" ]; then
        if [ "$(git config --bool bash.showDirtyState)" != "false" ]; then
          git diff --no-ext-diff --quiet --exit-code || w="*"
          if git rev-parse --quiet --verify HEAD >/dev/null; then
            git diff-index --cached --quiet HEAD -- || i="+"
          else
            i="#"
          fi
        fi
      fi
      if [ -n "${GIT_PS1_SHOWSTASHSTATE-}" ]; then
        git rev-parse --verify refs/stash >/dev/null 2>&1 && s="$"
      fi

      if [ -n "${GIT_PS1_SHOWUNTRACKEDFILES-}" ]; then
        if [ -n "$(git ls-files --others --exclude-standard)" ]; then
          u="%"
        fi
      fi

      if [ -n "${GIT_PS1_SHOWUPSTREAM-}" ]; then
        __git_ps1_show_upstream
      fi
    fi

    local f="$w$i$s$u"
    printf -- "${1:- (%s)}" "$c${b##refs/heads/}${f:+ $f}$r$p"
  fi
}

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

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

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

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

if ! type _get_comp_words_by_ref >/dev/null 2>&1; then
if [[ -z ${ZSH_VERSION:+set} ]]; 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
}
else
_get_comp_words_by_ref ()
{
  while [ $# -gt 0 ]; do
    case "$1" in
    cur)
      cur=${COMP_WORDS[COMP_CWORD]}
      ;;
    prev)
      prev=${COMP_WORDS[COMP_CWORD-1]}
      ;;
    words)
      words=("${COMP_WORDS[@]}")
      ;;
    cword)
      cword=$COMP_CWORD
      ;;
    -n)
      # assume COMP_WORDBREAKS is already set sanely
      shift
      ;;
    esac
    shift
  done
}
fi
fi

# Generates completion reply with compgen, 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 "$cur_" in
  --*=)
    COMPREPLY=()
    ;;
  *)
    local IFS=$'\n'
    COMPREPLY=($(compgen -P "${2-}" \
      -W "$(__gitcomp_1 "${1-}" "${4-}")" \
      -- "$cur_"))
    ;;
  esac
}

# Generates completion reply with compgen 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 ()
{
  local IFS=$'\n'
  COMPREPLY=($(compgen -P "${2-}" -S "${4- }" -W "$1" -- "${3-$cur}"))
}

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

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

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

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

# __git_refs_remotes requires 1 argument (to pass to ls-remote)
__git_refs_remotes ()
{
  local i hash
  git ls-remote "$1" 'refs/heads/*' 2>/dev/null | \
  while read -r hash i; do
    echo "$i:refs/remotes/$1/${i#refs/heads/}"
  done
}

__git_remotes ()
{
  local i IFS=$'\n' d="$(__gitdir)"
  test -d "$d/remotes" && ls -1 "$d/remotes"
  for i in $(git --git-dir="$d" config --get-regexp 'remote\..*\.url' 2>/dev/null); do
    i="${i#remote.}"
    echo "${i/.url*/}"
  done
}

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

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

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

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

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


__git_complete_file ()
{
  __git_complete_revlist_file
}

__git_complete_revlist ()
{
  __git_complete_revlist_file
}

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

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

__git_list_all_commands ()
{
  local i IFS=" "$'\n'
  for i in $(git help -a|egrep '^  [a-zA-Z0-9]')
  do
    case $i in
    *--*)             : helper pattern;;
    *) echo $i;;
    esac
  done
}

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

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

__git_porcelain_commands=
__git_compute_porcelain_commands ()
{
  __git_compute_all_commands
  test -n "$__git_porcelain_commands" ||
  __git_porcelain_commands=$(__git_list_porcelain_commands)
}

__git_pretty_aliases ()
{
  local i IFS=$'\n'
  for i in $(git --git-dir="$(__gitdir)" config --get-regexp "pretty\..*" 2>/dev/null); do
    case "$i" in
    pretty.*)
      i="${i#pretty.}"
      echo "${i/ */}"
      ;;
    esac
  done
}

__git_aliases ()
{
  local i IFS=$'\n'
  for i in $(git --git-dir="$(__gitdir)" config --get-regexp "alias\..*" 2>/dev/null); do
    case "$i" in
    alias.*)
      i="${i#alias.}"
      echo "${i/ */}"
      ;;
    esac
  done
}

# __git_aliased_command requires 1 argument
__git_aliased_command ()
{
  local word cmdline=$(git --git-dir="$(__gitdir)" \
    config --get "alias.$1")
  for word in $cmdline; do
    case "$word" in
    \!gitk|gitk)
      echo "gitk"
      return
      ;;
    \!*)  : shell command alias ;;
    -*) : option ;;
    *=*)  : setting env ;;
    git)  : git itself ;;
    *)
      echo "$word"
      return
    esac
  done
}

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

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

__git_whitespacelist="nowarn warn error error-all fix"

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

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

_git_add ()
{
  __git_has_doubledash && return

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

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

_git_bisect ()
{
  __git_has_doubledash && return

  local subcommands="start bad good skip reset visualize replay log run"
  local subcommand="$(__git_find_on_cmdline "$subcommands")"
  if [ -z "$subcommand" ]; then
    if [ -f "$(__gitdir)"/BISECT_START ]; then
      __gitcomp "$subcommands"
    else
      __gitcomp "replay start"
    fi
    return
  fi

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

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

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

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

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

_git_checkout ()
{
  __git_has_doubledash && return

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

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

_git_cherry_pick ()
{
  case "$cur" in
  --*)
    __gitcomp "--edit --no-commit"
    ;;
  *)
    __gitcomp_nl "$(__git_refs)"
    ;;
  esac
}

_git_clean ()
{
  __git_has_doubledash && return

  case "$cur" in
  --*)
    __gitcomp "--dry-run --quiet"
    return
    ;;
  esac
  COMPREPLY=()
}

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

_git_commit ()
{
  __git_has_doubledash && return

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

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

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

_git_diff ()
{
  __git_has_doubledash && return

  case "$cur" in
  --*)
    __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 ecmerge emerge kdiff3 meld opendiff
      tkdiff vimdiff gvimdiff xxdiff araxis p4merge bc3
"

_git_difftool ()
{
  __git_has_doubledash && return

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

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

_git_fetch ()
{
  case "$cur" in
  --*)
    __gitcomp "$__git_fetch_options"
    return
    ;;
  esac
  __git_complete_remote_or_refspec
}

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

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

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

_git_gitk ()
{
  _gitk
}

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

_git_grep ()
{
  __git_has_doubledash && return

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

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

  __gitcomp_nl "$(__git_refs)"
}

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

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

_git_ls_files ()
{
  __git_has_doubledash && return

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

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

_git_ls_tree ()
{
  __git_complete_file
}

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

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

_git_log ()
{
  __git_has_doubledash && return

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

__git_merge_options="
  --no-commit --no-stat --log --no-log --squash --strategy
  --commit --stat --no-squash --ff --no-ff --ff-only --edit --no-edit
"

_git_merge ()
{
  __git_complete_strategy && return

  case "$cur" in
  --*)
    __gitcomp "$__git_merge_options"
    return
  esac
  __gitcomp_nl "$(__git_refs)"
}

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

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

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

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

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

  case "$subcommand,$cur" in
  ,--*)
    __gitcomp '--ref'
    ;;
  ,*)
    case "${words[cword-1]}" in
    --ref)
      __gitcomp_nl "$(__git_refs)"
      ;;
    *)
      __gitcomp "$subcommands --ref"
      ;;
    esac
    ;;
  add,--reuse-message=*|append,--reuse-message=*|\
  add,--reedit-message=*|append,--reedit-message=*)
    __gitcomp_nl "$(__git_refs)" "" "${cur#*=}"
    ;;
  add,--*|append,--*)
    __gitcomp '--file= --message= --reedit-message=
        --reuse-message='
    ;;
  copy,--*)
    __gitcomp '--stdin'
    ;;
  prune,--*)
    __gitcomp '--dry-run --verbose'
    ;;
  prune,*)
    ;;
  *)
    case "${words[cword-1]}" in
    -m|-F)
      ;;
    *)
      __gitcomp_nl "$(__git_refs)"
      ;;
    esac
    ;;
  esac
}

_git_pull ()
{
  __git_complete_strategy && return

  case "$cur" in
  --*)
    __gitcomp "
      --rebase --no-rebase
      $__git_merge_options
      $__git_fetch_options
    "
    return
    ;;
  esac
  __git_complete_remote_or_refspec
}

_git_push ()
{
  case "$prev" in
  --repo)
    __gitcomp_nl "$(__git_remotes)"
    return
  esac
  case "$cur" in
  --repo=*)
    __gitcomp_nl "$(__git_remotes)" "" "${cur##--repo=}"
    return
    ;;
  --*)
    __gitcomp "
      --all --mirror --tags --dry-run --force --verbose
      --receive-pack= --repo= --set-upstream
    "
    return
    ;;
  esac
  __git_complete_remote_or_refspec
}

_git_rebase ()
{
  local dir="$(__gitdir)"
  if [ -d "$dir"/rebase-apply ] || [ -d "$dir"/rebase-merge ]; then
    __gitcomp "--continue --skip --abort"
    return
  fi
  __git_complete_strategy && return
  case "$cur" in
  --whitespace=*)
    __gitcomp "$__git_whitespacelist" "" "${cur##--whitespace=}"
    return
    ;;
  --*)
    __gitcomp "
      --onto --merge --strategy --interactive
      --preserve-merges --stat --no-stat
      --committer-date-is-author-date --ignore-date
      --ignore-whitespace --whitespace=
      --autosquash
      "

    return
  esac
  __gitcomp_nl "$(__git_refs)"
}

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

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

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

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

_git_stage ()
{
  _git_add
}

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

  git --git-dir="$(__gitdir)" config $config_file --list 2>/dev/null |
  while read -r line
  do
    case "$line" in
    *.*=*)
      echo "${line/=*/}"
      ;;
    esac
  done
}

_git_config ()
{
  case "$prev" in
  branch.*.remote)
    __gitcomp_nl "$(__git_remotes)"
    return
    ;;
  branch.*.merge)
    __gitcomp_nl "$(__git_refs)"
    return
    ;;
  remote.*.fetch)
    local remote="${prev#remote.}"
    remote="${remote%.fetch}"
    if [ -z "$cur" ]; then
      COMPREPLY=("refs/heads/")
      return
    fi
    __gitcomp_nl "$(__git_refs_remotes "$remote")"
    return
    ;;
  remote.*.push)
    local remote="${prev#remote.}"
    remote="${remote%.push}"
    __gitcomp_nl "$(git --git-dir="$(__gitdir)" \
      for-each-ref --format='%(refname):%(refname)' \
      refs/heads)"
    return
    ;;
  pull.twohead|pull.octopus)
    __git_compute_merge_strategies
    __gitcomp "$__git_merge_strategies"
    return
    ;;
  color.branch|color.diff|color.interactive|\
  color.showbranch|color.status|color.ui)
    __gitcomp "always never auto"
    return
    ;;
  color.pager)
    __gitcomp "false true"
    return
    ;;
  color.*.*)
    __gitcomp "
      normal black red green yellow blue magenta cyan white
      bold dim ul blink reverse
      "
    return
    ;;
  help.format)
    __gitcomp "man info web html"
    return
    ;;
  log.date)
    __gitcomp "$__git_log_date_formats"
    return
    ;;
  sendemail.aliasesfiletype)
    __gitcomp "mutt mailrc pine elm gnus"
    return
    ;;
  sendemail.confirm)
    __gitcomp "$__git_send_email_confirm_options"
    return
    ;;
  sendemail.suppresscc)
    __gitcomp "$__git_send_email_suppresscc_options"
    return
    ;;
  --get|--get-all|--unset|--unset-all)
    __gitcomp_nl "$(__git_config_get_set_variables)"
    return
    ;;
  *.*)
    COMPREPLY=()
    return
    ;;
  esac
  case "$cur" in
  --*)
    __gitcomp "
      --global --system --file=
      --list --replace-all
      --get --get-all --get-regexp
      --add --unset --unset-all
      --remove-section --rename-section
      "
    return
    ;;
  branch.*.*)
    local pfx="${cur%.*}." cur_="${cur##*.}"
    __gitcomp "remote merge mergeoptions rebase" "$pfx" "$cur_"
    return
    ;;
  branch.*)
    local pfx="${cur%.*}." cur_="${cur#*.}"
    __gitcomp_nl "$(__git_heads)" "$pfx" "$cur_" "."
    return
    ;;
  guitool.*.*)
    local pfx="${cur%.*}." cur_="${cur##*.}"
    __gitcomp "
      argprompt cmd confirm needsfile noconsole norescan
      prompt revprompt revunmerged title
      " "$pfx" "$cur_"
    return
    ;;
  difftool.*.*)
    local pfx="${cur%.*}." cur_="${cur##*.}"
    __gitcomp "cmd path" "$pfx" "$cur_"
    return
    ;;
  man.*.*)
    local pfx="${cur%.*}." cur_="${cur##*.}"
    __gitcomp "cmd path" "$pfx" "$cur_"
    return
    ;;
  mergetool.*.*)
    local pfx="${cur%.*}." cur_="${cur##*.}"
    __gitcomp "cmd path trustExitCode" "$pfx" "$cur_"
    return
    ;;
  pager.*)
    local pfx="${cur%.*}." cur_="${cur#*.}"
    __git_compute_all_commands
    __gitcomp_nl "$__git_all_commands" "$pfx" "$cur_"
    return
    ;;
  remote.*.*)
    local pfx="${cur%.*}." cur_="${cur##*.}"
    __gitcomp "
      url proxy fetch push mirror skipDefaultUpdate
      receivepack uploadpack tagopt pushurl
      " "$pfx" "$cur_"
    return
    ;;
  remote.*)
    local pfx="${cur%.*}." cur_="${cur#*.}"
    __gitcomp_nl "$(__git_remotes)" "$pfx" "$cur_" "."
    return
    ;;
  url.*.*)
    local pfx="${cur%.*}." cur_="${cur##*.}"
    __gitcomp "insteadOf pushInsteadOf" "$pfx" "$cur_"
    return
    ;;
  esac
  __gitcomp "
    add.ignoreErrors
    advice.commitBeforeMerge
    advice.detachedHead
    advice.implicitIdentity
    advice.pushNonFastForward
    advice.resolveConflict
    advice.statusHints
    alias.
    am.keepcr
    apply.ignorewhitespace
    apply.whitespace
    branch.autosetupmerge
    branch.autosetuprebase
    browser.
    clean.requireForce
    color.branch
    color.branch.current
    color.branch.local
    color.branch.plain
    color.branch.remote
    color.decorate.HEAD
    color.decorate.branch
    color.decorate.remoteBranch
    color.decorate.stash
    color.decorate.tag
    color.diff
    color.diff.commit
    color.diff.frag
    color.diff.func
    color.diff.meta
    color.diff.new
    color.diff.old
    color.diff.plain
    color.diff.whitespace
    color.grep
    color.grep.context
    color.grep.filename
    color.grep.function
    color.grep.linenumber
    color.grep.match
    color.grep.selected
    color.grep.separator
    color.interactive
    color.interactive.error
    color.interactive.header
    color.interactive.help
    color.interactive.prompt
    color.pager
    color.showbranch
    color.status
    color.status.added
    color.status.changed
    color.status.header
    color.status.nobranch
    color.status.untracked
    color.status.updated
    color.ui
    commit.status
    commit.template
    core.abbrev
    core.askpass
    core.attributesfile
    core.autocrlf
    core.bare
    core.bigFileThreshold
    core.compression
    core.createObject
    core.deltaBaseCacheLimit
    core.editor
    core.eol
    core.excludesfile
    core.fileMode
    core.fsyncobjectfiles
    core.gitProxy
    core.ignoreCygwinFSTricks
    core.ignoreStat
    core.ignorecase
    core.logAllRefUpdates
    core.loosecompression
    core.notesRef
    core.packedGitLimit
    core.packedGitWindowSize
    core.pager
    core.preferSymlinkRefs
    core.preloadindex
    core.quotepath
    core.repositoryFormatVersion
    core.safecrlf
    core.sharedRepository
    core.sparseCheckout
    core.symlinks
    core.trustctime
    core.warnAmbiguousRefs
    core.whitespace
    core.worktree
    diff.autorefreshindex
    diff.external
    diff.ignoreSubmodules
    diff.mnemonicprefix
    diff.noprefix
    diff.renameLimit
    diff.renames
    diff.suppressBlankEmpty
    diff.tool
    diff.wordRegex
    difftool.
    difftool.prompt
    fetch.recurseSubmodules
    fetch.unpackLimit
    format.attach
    format.cc
    format.headers
    format.numbered
    format.pretty
    format.signature
    format.signoff
    format.subjectprefix
    format.suffix
    format.thread
    format.to
    gc.
    gc.aggressiveWindow
    gc.auto
    gc.autopacklimit
    gc.packrefs
    gc.pruneexpire
    gc.reflogexpire
    gc.reflogexpireunreachable
    gc.rerereresolved
    gc.rerereunresolved
    gitcvs.allbinary
    gitcvs.commitmsgannotation
    gitcvs.dbTableNamePrefix
    gitcvs.dbdriver
    gitcvs.dbname
    gitcvs.dbpass
    gitcvs.dbuser
    gitcvs.enabled
    gitcvs.logfile
    gitcvs.usecrlfattr
    guitool.
    gui.blamehistoryctx
    gui.commitmsgwidth
    gui.copyblamethreshold
    gui.diffcontext
    gui.encoding
    gui.fastcopyblame
    gui.matchtrackingbranch
    gui.newbranchtemplate
    gui.pruneduringfetch
    gui.spellingdictionary
    gui.trustmtime
    help.autocorrect
    help.browser
    help.format
    http.lowSpeedLimit
    http.lowSpeedTime
    http.maxRequests
    http.minSessions
    http.noEPSV
    http.postBuffer
    http.proxy
    http.sslCAInfo
    http.sslCAPath
    http.sslCert
    http.sslCertPasswordProtected
    http.sslKey
    http.sslVerify
    http.useragent
    i18n.commitEncoding
    i18n.logOutputEncoding
    imap.authMethod
    imap.folder
    imap.host
    imap.pass
    imap.port
    imap.preformattedHTML
    imap.sslverify
    imap.tunnel
    imap.user
    init.templatedir
    instaweb.browser
    instaweb.httpd
    instaweb.local
    instaweb.modulepath
    instaweb.port
    interactive.singlekey
    log.date
    log.decorate
    log.showroot
    mailmap.file
    man.
    man.viewer
    merge.
    merge.conflictstyle
    merge.log
    merge.renameLimit
    merge.renormalize
    merge.stat
    merge.tool
    merge.verbosity
    mergetool.
    mergetool.keepBackup
    mergetool.keepTemporaries
    mergetool.prompt
    notes.displayRef
    notes.rewrite.
    notes.rewrite.amend
    notes.rewrite.rebase
    notes.rewriteMode
    notes.rewriteRef
    pack.compression
    pack.deltaCacheLimit
    pack.deltaCacheSize
    pack.depth
    pack.indexVersion
    pack.packSizeLimit
    pack.threads
    pack.window
    pack.windowMemory
    pager.
    pretty.
    pull.octopus
    pull.twohead
    push.default
    rebase.autosquash
    rebase.stat
    receive.autogc
    receive.denyCurrentBranch
    receive.denyDeleteCurrent
    receive.denyDeletes
    receive.denyNonFastForwards
    receive.fsckObjects
    receive.unpackLimit
    receive.updateserverinfo
    remotes.
    repack.usedeltabaseoffset
    rerere.autoupdate
    rerere.enabled
    sendemail.
    sendemail.aliasesfile
    sendemail.aliasfiletype
    sendemail.bcc
    sendemail.cc
    sendemail.cccmd
    sendemail.chainreplyto
    sendemail.confirm
    sendemail.envelopesender
    sendemail.from
    sendemail.identity
    sendemail.multiedit
    sendemail.signedoffbycc
    sendemail.smtpdomain
    sendemail.smtpencryption
    sendemail.smtppass
    sendemail.smtpserver
    sendemail.smtpserveroption
    sendemail.smtpserverport
    sendemail.smtpuser
    sendemail.suppresscc
    sendemail.suppressfrom
    sendemail.thread
    sendemail.to
    sendemail.validate
    showbranch.default
    status.relativePaths
    status.showUntrackedFiles
    status.submodulesummary
    submodule.
    tar.umask
    transfer.unpackLimit
    url.
    user.email
    user.name
    user.signingkey
    web.browser
    branch. remote.
  "
}

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

  case "$subcommand" in
  rename|rm|set-url|show|prune)
    __gitcomp_nl "$(__git_remotes)"
    ;;
  set-head|set-branches)
    __git_complete_remote_or_refspec
    ;;
  update)
    local i c='' IFS=$'\n'
    for i in $(git --git-dir="$(__gitdir)" config --get-regexp "remotes\..*" 2>/dev/null); do
      i="${i#remotes.}"
      c="$c ${i/ */}"
    done
    __gitcomp "$c"
    ;;
  *)
    COMPREPLY=()
    ;;
  esac
}

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

_git_reset ()
{
  __git_has_doubledash && return

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

_git_revert ()
{
  case "$cur" in
  --*)
    __gitcomp "--edit --mainline --no-edit --no-commit --signoff"
    return
    ;;
  esac
  __gitcomp_nl "$(__git_refs)"
}

_git_rm ()
{
  __git_has_doubledash && return

  case "$cur" in
  --*)
    __gitcomp "--cached --dry-run --ignore-unmatch --quiet"
    return
    ;;
  esac
  COMPREPLY=()
}

_git_shortlog ()
{
  __git_has_doubledash && return

  case "$cur" in
  --*)
    __gitcomp "
      $__git_log_common_options
      $__git_log_shortlog_options
      --numbered --summary
      "
    return
    ;;
  esac
  __git_complete_revlist
}

_git_show ()
{
  __git_has_doubledash && return

  case "$cur" in
  --pretty=*|--format=*)
    __gitcomp "$__git_log_pretty_formats $(__git_pretty_aliases)
      " "" "${cur#*=}"
    return
    ;;
  --*)
    __gitcomp "--pretty= --format= --abbrev-commit --oneline
      $__git_diff_common_options
      "
    return
    ;;
  esac
  __git_complete_file
}

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

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

_git_submodule ()
{
  __git_has_doubledash && return

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

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

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

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

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

_git_whatchanged ()
{
  _git_log
}

_git ()
{
  local i c=1 command __git_dir

  if [[ -n ${ZSH_VERSION-} ]]; then
    emulate -L bash
    setopt KSH_TYPESET

    # workaround zsh's bug that leaves 'words' as a special
    # variable in versions < 4.3.12
    typeset -h words

    # workaround zsh's bug that quotes spaces in the COMPREPLY
    # array if IFS doesn't contain spaces.
    typeset -h IFS
  fi

  local cur words cword prev
  _get_comp_words_by_ref -n =: cur words cword prev
  while [ $c -lt $cword ]; do
    i="${words[c]}"
    case "$i" in
    --git-dir=*) __git_dir="${i#--git-dir=}" ;;
    --bare)      __git_dir="." ;;
    --version|-p|--paginate) ;;
    --help) command="help"; break ;;
    *) command="$i"; break ;;
    esac
    ((c++))
  done

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

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

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

_gitk ()
{
  if [[ -n ${ZSH_VERSION-} ]]; then
    emulate -L bash
    setopt KSH_TYPESET

    # workaround zsh's bug that leaves 'words' as a special
    # variable in versions < 4.3.12
    typeset -h words

    # workaround zsh's bug that quotes spaces in the COMPREPLY
    # array if IFS doesn't contain spaces.
    typeset -h IFS
  fi

  local cur words cword prev
  _get_comp_words_by_ref -n =: cur words cword prev

  __git_has_doubledash && return

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

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

# The following are necessary only for Cygwin, and only are needed
# when the user has tab-completed the executable name and consequently
# included the '.exe' suffix.
#
if [ Cygwin = "$(uname -o 2>/dev/null)" ]; then
complete -o bashdefault -o default -o nospace -F _git git.exe 2>/dev/null \
  || complete -o default -o nospace -F _git git.exe
fi