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