contrib/completion/git-prompt.sh

   1 # bash/zsh git prompt support
   2 #
   3 # Copyright (C) 2006,2007 Shawn O. Pearce <spearce@spearce.org>
   4 # Distributed under the GNU General Public License, version 2.0.
   5 #
   6 # This script allows you to see repository status in your prompt.
   7 #
   8 # To enable:
   9 #
  10 #    1) Copy this file to somewhere (e.g. ~/.git-prompt.sh).
  11 #    2) Add the following line to your .bashrc/.zshrc:
  12 #        source ~/.git-prompt.sh
  13 #    3a) Change your PS1 to call __git_ps1 as
  14 #        command-substitution:
  15 #        Bash: PS1='[\u@\h \W$(__git_ps1 " (%s)")]\$ '
  16 #        ZSH:  setopt PROMPT_SUBST ; PS1='[%n@%m %c$(__git_ps1 " (%s)")]\$ '
  17 #        the optional argument will be used as format string.
  18 #    3b) Alternatively, for a slightly faster prompt, __git_ps1 can
  19 #        be used for PROMPT_COMMAND in Bash or for precmd() in Zsh
  20 #        with two parameters, <pre> and <post>, which are strings
  21 #        you would put in $PS1 before and after the status string
  22 #        generated by the git-prompt machinery.  e.g.
  23 #        Bash: PROMPT_COMMAND='__git_ps1 "\u@\h:\w" "\\\$ "'
  24 #          will show username, at-sign, host, colon, cwd, then
  25 #          various status string, followed by dollar and SP, as
  26 #          your prompt.
  27 #        ZSH:  precmd () { __git_ps1 "%n" ":%~$ " "|%s" }
  28 #          will show username, pipe, then various status string,
  29 #          followed by colon, cwd, dollar and SP, as your prompt.
  30 #        Optionally, you can supply a third argument with a printf
  31 #        format string to finetune the output of the branch status
  32 #
  33 # The repository status will be displayed only if you are currently in a
  34 # git repository. The %s token is the placeholder for the shown status.
  35 #
  36 # The prompt status always includes the current branch name.
  37 #
  38 # In addition, if you set GIT_PS1_SHOWDIRTYSTATE to a nonempty value,
  39 # unstaged (*) and staged (+) changes will be shown next to the branch
  40 # name.  You can configure this per-repository with the
  41 # bash.showDirtyState variable, which defaults to true once
  42 # GIT_PS1_SHOWDIRTYSTATE is enabled.
  43 #
  44 # You can also see if currently something is stashed, by setting
  45 # GIT_PS1_SHOWSTASHSTATE to a nonempty value. If something is stashed,
  46 # then a '$' will be shown next to the branch name.
  47 #
  48 # If you would like to see if there're untracked files, then you can set
  49 # GIT_PS1_SHOWUNTRACKEDFILES to a nonempty value. If there're untracked
  50 # files, then a '%' will be shown next to the branch name.  You can
  51 # configure this per-repository with the bash.showUntrackedFiles
  52 # variable, which defaults to true once GIT_PS1_SHOWUNTRACKEDFILES is
  53 # enabled.
  54 #
  55 # If you would like to see the difference between HEAD and its upstream,
  56 # set GIT_PS1_SHOWUPSTREAM="auto".  A "<" indicates you are behind, ">"
  57 # indicates you are ahead, "<>" indicates you have diverged and "="
  58 # indicates that there is no difference. You can further control
  59 # behaviour by setting GIT_PS1_SHOWUPSTREAM to a space-separated list
  60 # of values:
  61 #
  62 #     verbose       show number of commits ahead/behind (+/-) upstream
  63 #     name          if verbose, then also show the upstream abbrev name
  64 #     legacy        don't use the '--count' option available in recent
  65 #                   versions of git-rev-list
  66 #     git           always compare HEAD to @{upstream}
  67 #     svn           always compare HEAD to your SVN upstream
  68 #
  69 # By default, __git_ps1 will compare HEAD to your SVN upstream if it can
  70 # find one, or @{upstream} otherwise.  Once you have set
  71 # GIT_PS1_SHOWUPSTREAM, you can override it on a per-repository basis by
  72 # setting the bash.showUpstream config variable.
  73 #
  74 # You can change the separator between the branch name and the above
  75 # state symbols by setting GIT_PS1_STATESEPARATOR. The default separator
  76 # is SP.
  77 #
  78 # When there is an in-progress operation such as a merge, rebase,
  79 # revert, cherry-pick, or bisect, the prompt will include information
  80 # related to the operation, often in the form "|<OPERATION-NAME>".
  81 #
  82 # When the repository has a sparse-checkout, a notification of the form
  83 # "|SPARSE" will be included in the prompt.  This can be shortened to a
  84 # single '?' character by setting GIT_PS1_COMPRESSSPARSESTATE, or omitted
  85 # by setting GIT_PS1_OMITSPARSESTATE.
  86 #
  87 # If you would like to see a notification on the prompt when there are
  88 # unresolved conflicts, set GIT_PS1_SHOWCONFLICTSTATE to "yes". The
  89 # prompt will include "|CONFLICT".
  90 #
  91 # If you would like to see more information about the identity of
  92 # commits checked out as a detached HEAD, set GIT_PS1_DESCRIBE_STYLE
  93 # to one of these values:
  94 #
  95 #     contains      relative to newer annotated tag (v1.6.3.2~35)
  96 #     branch        relative to newer tag or branch (master~4)
  97 #     describe      relative to older annotated tag (v1.6.3.1-13-gdd42c2f)
  98 #     tag           relative to any older tag (v1.6.3.1-13-gdd42c2f)
  99 #     default       exactly matching tag
 100 #
 101 # If you would like a colored hint about the current dirty state, set
 102 # GIT_PS1_SHOWCOLORHINTS to a nonempty value. The colors are based on
 103 # the colored output of "git status -sb" and are available only when
 104 # using __git_ps1 for PROMPT_COMMAND or precmd in Bash,
 105 # but always available in Zsh.
 106 #
 107 # If you would like __git_ps1 to do nothing in the case when the current
 108 # directory is set up to be ignored by git, then set
 109 # GIT_PS1_HIDE_IF_PWD_IGNORED to a nonempty value. Override this on the
 110 # repository level by setting bash.hideIfPwdIgnored to "false".
 111
 112 # check whether printf supports -v
 113 __git_printf_supports_v=
 114 printf -v __git_printf_supports_v -- '%s' yes >/dev/null 2>&1
 115
 116 # stores the divergence from upstream in $p
 117 # used by GIT_PS1_SHOWUPSTREAM
 118 __git_ps1_show_upstream ()
 119 {
 120         local key value
 121         local svn_remote svn_url_pattern count n
 122         local upstream_type=git legacy="" verbose="" name=""
 123
 124         svn_remote=()
 125         # get some config options from git-config
 126         local output="$(git config -z --get-regexp '^(svn-remote\..*\.url|bash\.showupstream)$' 2>/dev/null | tr '\0\n' '\n ')"
 127         while read -r key value; do
 128                 case "$key" in
 129                 bash.showupstream)
 130                         GIT_PS1_SHOWUPSTREAM="$value"
 131                         if [[ -z "${GIT_PS1_SHOWUPSTREAM}" ]]; then
 132                                 p=""
 133                                 return
 134                         fi
 135                         ;;
 136                 svn-remote.*.url)
 137                         svn_remote[$((${#svn_remote[@]} + 1))]="$value"
 138                         svn_url_pattern="$svn_url_pattern\\|$value"
 139                         upstream_type=svn+git # default upstream type is SVN if available, else git
 140                         ;;
 141                 esac
 142         done <<< "$output"
 143
 144         # parse configuration values
 145         local option
 146         for option in ${GIT_PS1_SHOWUPSTREAM}; do
 147                 case "$option" in
 148                 git|svn) upstream_type="$option" ;;
 149                 verbose) verbose=1 ;;
 150                 legacy)  legacy=1  ;;
 151                 name)    name=1 ;;
 152                 esac
 153         done
 154
 155         # Find our upstream type
 156         case "$upstream_type" in
 157         git)    upstream_type="@{upstream}" ;;
 158         svn*)
 159                 # get the upstream from the "git-svn-id: ..." in a commit message
 160                 # (git-svn uses essentially the same procedure internally)
 161                 local -a svn_upstream
 162                 svn_upstream=($(git log --first-parent -1 \
 163                                         --grep="^git-svn-id: \(${svn_url_pattern#??}\)" 2>/dev/null))
 164                 if [[ 0 -ne ${#svn_upstream[@]} ]]; then
 165                         svn_upstream=${svn_upstream[${#svn_upstream[@]} - 2]}
 166                         svn_upstream=${svn_upstream%@*}
 167                         local n_stop="${#svn_remote[@]}"
 168                         for ((n=1; n <= n_stop; n++)); do
 169                                 svn_upstream=${svn_upstream#${svn_remote[$n]}}
 170                         done
 171
 172                         if [[ -z "$svn_upstream" ]]; then
 173                                 # default branch name for checkouts with no layout:
 174                                 upstream_type=${GIT_SVN_ID:-git-svn}
 175                         else
 176                                 upstream_type=${svn_upstream#/}
 177                         fi
 178                 elif [[ "svn+git" = "$upstream_type" ]]; then
 179                         upstream_type="@{upstream}"
 180                 fi
 181                 ;;
 182         esac
 183
 184         # Find how many commits we are ahead/behind our upstream
 185         if [[ -z "$legacy" ]]; then
 186                 count="$(git rev-list --count --left-right \
 187                                 "$upstream_type"...HEAD 2>/dev/null)"
 188         else
 189                 # produce equivalent output to --count for older versions of git
 190                 local commits
 191                 if commits="$(git rev-list --left-right "$upstream_type"...HEAD 2>/dev/null)"
 192                 then
 193                         local commit behind=0 ahead=0
 194                         for commit in $commits
 195                         do
 196                                 case "$commit" in
 197                                 "<"*) ((behind++)) ;;
 198                                 *)    ((ahead++))  ;;
 199                                 esac
 200                         done
 201                         count="$behind  $ahead"
 202                 else
 203                         count=""
 204                 fi
 205         fi
 206
 207         # calculate the result
 208         if [[ -z "$verbose" ]]; then
 209                 case "$count" in
 210                 "") # no upstream
 211                         p="" ;;
 212                 "0      0") # equal to upstream
 213                         p="=" ;;
 214                 "0      "*) # ahead of upstream
 215                         p=">" ;;
 216                 *"      0") # behind upstream
 217                         p="<" ;;
 218                 *)          # diverged from upstream
 219                         p="<>" ;;
 220                 esac
 221         else # verbose, set upstream instead of p
 222                 case "$count" in
 223                 "") # no upstream
 224                         upstream="" ;;
 225                 "0      0") # equal to upstream
 226                         upstream="|u=" ;;
 227                 "0      "*) # ahead of upstream
 228                         upstream="|u+${count#0  }" ;;
 229                 *"      0") # behind upstream
 230                         upstream="|u-${count%   0}" ;;
 231                 *)          # diverged from upstream
 232                         upstream="|u+${count#*  }-${count%      *}" ;;
 233                 esac
 234                 if [[ -n "$count" && -n "$name" ]]; then
 235                         __git_ps1_upstream_name=$(git rev-parse \
 236                                 --abbrev-ref "$upstream_type" 2>/dev/null)
 237                         if [ $pcmode = yes ] && [ $ps1_expanded = yes ]; then
 238                                 upstream="$upstream \${__git_ps1_upstream_name}"
 239                         else
 240                                 upstream="$upstream ${__git_ps1_upstream_name}"
 241                                 # not needed anymore; keep user's
 242                                 # environment clean
 243                                 unset __git_ps1_upstream_name
 244                         fi
 245                 fi
 246         fi
 247
 248 }
 249
 250 # Helper function that is meant to be called from __git_ps1.  It
 251 # injects color codes into the appropriate gitstring variables used
 252 # to build a gitstring. Colored variables are responsible for clearing
 253 # their own color.
 254 __git_ps1_colorize_gitstring ()
 255 {
 256         if [[ -n ${ZSH_VERSION-} ]]; then
 257                 local c_red='%F{red}'
 258                 local c_green='%F{green}'
 259                 local c_lblue='%F{blue}'
 260                 local c_clear='%f'
 261         else
 262                 # Using \[ and \] around colors is necessary to prevent
 263                 # issues with command line editing/browsing/completion!
 264                 local c_red='\[\e[31m\]'
 265                 local c_green='\[\e[32m\]'
 266                 local c_lblue='\[\e[1;34m\]'
 267                 local c_clear='\[\e[0m\]'
 268         fi
 269         local bad_color=$c_red
 270         local ok_color=$c_green
 271         local flags_color="$c_lblue"
 272
 273         local branch_color=""
 274         if [ $detached = no ]; then
 275                 branch_color="$ok_color"
 276         else
 277                 branch_color="$bad_color"
 278         fi
 279         if [ -n "$c" ]; then
 280                 c="$branch_color$c$c_clear"
 281         fi
 282         b="$branch_color$b$c_clear"
 283
 284         if [ -n "$w" ]; then
 285                 w="$bad_color$w$c_clear"
 286         fi
 287         if [ -n "$i" ]; then
 288                 i="$ok_color$i$c_clear"
 289         fi
 290         if [ -n "$s" ]; then
 291                 s="$flags_color$s$c_clear"
 292         fi
 293         if [ -n "$u" ]; then
 294                 u="$bad_color$u$c_clear"
 295         fi
 296 }
 297
 298 # Helper function to read the first line of a file into a variable.
 299 # __git_eread requires 2 arguments, the file path and the name of the
 300 # variable, in that order.
 301 __git_eread ()
 302 {
 303         test -r "$1" && IFS=$'\r\n' read "$2" <"$1"
 304 }
 305
 306 # see if a cherry-pick or revert is in progress, if the user has committed a
 307 # conflict resolution with 'git commit' in the middle of a sequence of picks or
 308 # reverts then CHERRY_PICK_HEAD/REVERT_HEAD will not exist so we have to read
 309 # the todo file.
 310 __git_sequencer_status ()
 311 {
 312         local todo
 313         if test -f "$g/CHERRY_PICK_HEAD"
 314         then
 315                 r="|CHERRY-PICKING"
 316                 return 0;
 317         elif test -f "$g/REVERT_HEAD"
 318         then
 319                 r="|REVERTING"
 320                 return 0;
 321         elif __git_eread "$g/sequencer/todo" todo
 322         then
 323                 case "$todo" in
 324                 p[\ \   ]|pick[\ \      ]*)
 325                         r="|CHERRY-PICKING"
 326                         return 0
 327                 ;;
 328                 revert[\ \      ]*)
 329                         r="|REVERTING"
 330                         return 0
 331                 ;;
 332                 esac
 333         fi
 334         return 1
 335 }
 336
 337 # __git_ps1 accepts 0 or 1 arguments (i.e., format string)
 338 # when called from PS1 using command substitution
 339 # in this mode it prints text to add to bash PS1 prompt (includes branch name)
 340 #
 341 # __git_ps1 requires 2 or 3 arguments when called from PROMPT_COMMAND (pc)
 342 # in that case it _sets_ PS1. The arguments are parts of a PS1 string.
 343 # when two arguments are given, the first is prepended and the second appended
 344 # to the state string when assigned to PS1.
 345 # The optional third parameter will be used as printf format string to further
 346 # customize the output of the git-status string.
 347 # In this mode you can request colored hints using GIT_PS1_SHOWCOLORHINTS=true
 348 __git_ps1 ()
 349 {
 350         # preserve exit status
 351         local exit=$?
 352         local pcmode=no
 353         local detached=no
 354         local ps1pc_start='\u@\h:\w '
 355         local ps1pc_end='\$ '
 356         local printf_format=' (%s)'
 357
 358         case "$#" in
 359                 2|3)    pcmode=yes
 360                         ps1pc_start="$1"
 361                         ps1pc_end="$2"
 362                         printf_format="${3:-$printf_format}"
 363                         # set PS1 to a plain prompt so that we can
 364                         # simply return early if the prompt should not
 365                         # be decorated
 366                         PS1="$ps1pc_start$ps1pc_end"
 367                 ;;
 368                 0|1)    printf_format="${1:-$printf_format}"
 369                 ;;
 370                 *)      return $exit
 371                 ;;
 372         esac
 373
 374         # ps1_expanded:  This variable is set to 'yes' if the shell
 375         # subjects the value of PS1 to parameter expansion:
 376         #
 377         #   * bash does unless the promptvars option is disabled
 378         #   * zsh does not unless the PROMPT_SUBST option is set
 379         #   * POSIX shells always do
 380         #
 381         # If the shell would expand the contents of PS1 when drawing
 382         # the prompt, a raw ref name must not be included in PS1.
 383         # This protects the user from arbitrary code execution via
 384         # specially crafted ref names.  For example, a ref named
 385         # 'refs/heads/$(IFS=_;cmd=sudo_rm_-rf_/;$cmd)' might cause the
 386         # shell to execute 'sudo rm -rf /' when the prompt is drawn.
 387         #
 388         # Instead, the ref name should be placed in a separate global
 389         # variable (in the __git_ps1_* namespace to avoid colliding
 390         # with the user's environment) and that variable should be
 391         # referenced from PS1.  For example:
 392         #
 393         #     __git_ps1_foo=$(do_something_to_get_ref_name)
 394         #     PS1="...stuff...\${__git_ps1_foo}...stuff..."
 395         #
 396         # If the shell does not expand the contents of PS1, the raw
 397         # ref name must be included in PS1.
 398         #
 399         # The value of this variable is only relevant when in pcmode.
 400         #
 401         # Assume that the shell follows the POSIX specification and
 402         # expands PS1 unless determined otherwise.  (This is more
 403         # likely to be correct if the user has a non-bash, non-zsh
 404         # shell and safer than the alternative if the assumption is
 405         # incorrect.)
 406         #
 407         local ps1_expanded=yes
 408         [ -z "${ZSH_VERSION-}" ] || [[ -o PROMPT_SUBST ]] || ps1_expanded=no
 409         [ -z "${BASH_VERSION-}" ] || shopt -q promptvars || ps1_expanded=no
 410
 411         local repo_info rev_parse_exit_code
 412         repo_info="$(git rev-parse --git-dir --is-inside-git-dir \
 413                 --is-bare-repository --is-inside-work-tree \
 414                 --short HEAD 2>/dev/null)"
 415         rev_parse_exit_code="$?"
 416
 417         if [ -z "$repo_info" ]; then
 418                 return $exit
 419         fi
 420
 421         local short_sha=""
 422         if [ "$rev_parse_exit_code" = "0" ]; then
 423                 short_sha="${repo_info##*$'\n'}"
 424                 repo_info="${repo_info%$'\n'*}"
 425         fi
 426         local inside_worktree="${repo_info##*$'\n'}"
 427         repo_info="${repo_info%$'\n'*}"
 428         local bare_repo="${repo_info##*$'\n'}"
 429         repo_info="${repo_info%$'\n'*}"
 430         local inside_gitdir="${repo_info##*$'\n'}"
 431         local g="${repo_info%$'\n'*}"
 432
 433         if [ "true" = "$inside_worktree" ] &&
 434            [ -n "${GIT_PS1_HIDE_IF_PWD_IGNORED-}" ] &&
 435            [ "$(git config --bool bash.hideIfPwdIgnored)" != "false" ] &&
 436            git check-ignore -q .
 437         then
 438                 return $exit
 439         fi
 440
 441         local sparse=""
 442         if [ -z "${GIT_PS1_COMPRESSSPARSESTATE-}" ] &&
 443            [ -z "${GIT_PS1_OMITSPARSESTATE-}" ] &&
 444            [ "$(git config --bool core.sparseCheckout)" = "true" ]; then
 445                 sparse="|SPARSE"
 446         fi
 447
 448         local r=""
 449         local b=""
 450         local step=""
 451         local total=""
 452         if [ -d "$g/rebase-merge" ]; then
 453                 __git_eread "$g/rebase-merge/head-name" b
 454                 __git_eread "$g/rebase-merge/msgnum" step
 455                 __git_eread "$g/rebase-merge/end" total
 456                 r="|REBASE"
 457         else
 458                 if [ -d "$g/rebase-apply" ]; then
 459                         __git_eread "$g/rebase-apply/next" step
 460                         __git_eread "$g/rebase-apply/last" total
 461                         if [ -f "$g/rebase-apply/rebasing" ]; then
 462                                 __git_eread "$g/rebase-apply/head-name" b
 463                                 r="|REBASE"
 464                         elif [ -f "$g/rebase-apply/applying" ]; then
 465                                 r="|AM"
 466                         else
 467                                 r="|AM/REBASE"
 468                         fi
 469                 elif [ -f "$g/MERGE_HEAD" ]; then
 470                         r="|MERGING"
 471                 elif __git_sequencer_status; then
 472                         :
 473                 elif [ -f "$g/BISECT_LOG" ]; then
 474                         r="|BISECTING"
 475                 fi
 476
 477                 if [ -n "$b" ]; then
 478                         :
 479                 elif [ -h "$g/HEAD" ]; then
 480                         # symlink symbolic ref
 481                         b="$(git symbolic-ref HEAD 2>/dev/null)"
 482                 else
 483                         local head=""
 484                         if ! __git_eread "$g/HEAD" head; then
 485                                 return $exit
 486                         fi
 487                         # is it a symbolic ref?
 488                         b="${head#ref: }"
 489                         if [ "$head" = "$b" ]; then
 490                                 detached=yes
 491                                 b="$(
 492                                 case "${GIT_PS1_DESCRIBE_STYLE-}" in
 493                                 (contains)
 494                                         git describe --contains HEAD ;;
 495                                 (branch)
 496                                         git describe --contains --all HEAD ;;
 497                                 (tag)
 498                                         git describe --tags HEAD ;;
 499                                 (describe)
 500                                         git describe HEAD ;;
 501                                 (* | default)
 502                                         git describe --tags --exact-match HEAD ;;
 503                                 esac 2>/dev/null)" ||
 504
 505                                 b="$short_sha..."
 506                                 b="($b)"
 507                         fi
 508                 fi
 509         fi
 510
 511         if [ -n "$step" ] && [ -n "$total" ]; then
 512                 r="$r $step/$total"
 513         fi
 514
 515         local conflict="" # state indicator for unresolved conflicts
 516         if [[ "${GIT_PS1_SHOWCONFLICTSTATE}" == "yes" ]] &&
 517            [[ $(git ls-files --unmerged 2>/dev/null) ]]; then
 518                 conflict="|CONFLICT"
 519         fi
 520
 521         local w=""
 522         local i=""
 523         local s=""
 524         local u=""
 525         local h=""
 526         local c=""
 527         local p="" # short version of upstream state indicator
 528         local upstream="" # verbose version of upstream state indicator
 529
 530         if [ "true" = "$inside_gitdir" ]; then
 531                 if [ "true" = "$bare_repo" ]; then
 532                         c="BARE:"
 533                 else
 534                         b="GIT_DIR!"
 535                 fi
 536         elif [ "true" = "$inside_worktree" ]; then
 537                 if [ -n "${GIT_PS1_SHOWDIRTYSTATE-}" ] &&
 538                    [ "$(git config --bool bash.showDirtyState)" != "false" ]
 539                 then
 540                         git diff --no-ext-diff --quiet || w="*"
 541                         git diff --no-ext-diff --cached --quiet || i="+"
 542                         if [ -z "$short_sha" ] && [ -z "$i" ]; then
 543                                 i="#"
 544                         fi
 545                 fi
 546                 if [ -n "${GIT_PS1_SHOWSTASHSTATE-}" ] &&
 547                    git rev-parse --verify --quiet refs/stash >/dev/null
 548                 then
 549                         s="$"
 550                 fi
 551
 552                 if [ -n "${GIT_PS1_SHOWUNTRACKEDFILES-}" ] &&
 553                    [ "$(git config --bool bash.showUntrackedFiles)" != "false" ] &&
 554                    git ls-files --others --exclude-standard --directory --no-empty-directory --error-unmatch -- ':/*' >/dev/null 2>/dev/null
 555                 then
 556                         u="%${ZSH_VERSION+%}"
 557                 fi
 558
 559                 if [ -n "${GIT_PS1_COMPRESSSPARSESTATE-}" ] &&
 560                    [ "$(git config --bool core.sparseCheckout)" = "true" ]; then
 561                         h="?"
 562                 fi
 563
 564                 if [ -n "${GIT_PS1_SHOWUPSTREAM-}" ]; then
 565                         __git_ps1_show_upstream
 566                 fi
 567         fi
 568
 569         local z="${GIT_PS1_STATESEPARATOR-" "}"
 570
 571         b=${b##refs/heads/}
 572         if [ $pcmode = yes ] && [ $ps1_expanded = yes ]; then
 573                 __git_ps1_branch_name=$b
 574                 b="\${__git_ps1_branch_name}"
 575         fi
 576
 577         # NO color option unless in PROMPT_COMMAND mode or it's Zsh
 578         if [ -n "${GIT_PS1_SHOWCOLORHINTS-}" ]; then
 579                 if [ $pcmode = yes ] || [ -n "${ZSH_VERSION-}" ]; then
 580                         __git_ps1_colorize_gitstring
 581                 fi
 582         fi
 583
 584         local f="$h$w$i$s$u$p"
 585         local gitstring="$c$b${f:+$z$f}${sparse}$r${upstream}${conflict}"
 586
 587         if [ $pcmode = yes ]; then
 588                 if [ "${__git_printf_supports_v-}" != yes ]; then
 589                         gitstring=$(printf -- "$printf_format" "$gitstring")
 590                 else
 591                         printf -v gitstring -- "$printf_format" "$gitstring"
 592                 fi
 593                 PS1="$ps1pc_start$gitstring$ps1pc_end"
 594         else
 595                 printf -- "$printf_format" "$gitstring"
 596         fi
 597
 598         return $exit
 599 }