587 lines
17 KiB
Bash
587 lines
17 KiB
Bash
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# bash/zsh git prompt support
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#
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# Copyright (C) 2006,2007 Shawn O. Pearce <spearce@spearce.org>
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# Distributed under the GNU General Public License, version 2.0.
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#
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# This script allows you to see repository status in your prompt.
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#
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# To enable:
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#
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# 1) Copy this file to somewhere (e.g. ~/.git-prompt.sh).
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# 2) Add the following line to your .bashrc/.zshrc:
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# source ~/.git-prompt.sh
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# 3a) Change your PS1 to call __git_ps1 as
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# command-substitution:
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# Bash: PS1='[\u@\h \W$(__git_ps1 " (%s)")]\$ '
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# ZSH: setopt PROMPT_SUBST ; PS1='[%n@%m %c$(__git_ps1 " (%s)")]\$ '
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# the optional argument will be used as format string.
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# 3b) Alternatively, for a slightly faster prompt, __git_ps1 can
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# be used for PROMPT_COMMAND in Bash or for precmd() in Zsh
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# with two parameters, <pre> and <post>, which are strings
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# you would put in $PS1 before and after the status string
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# generated by the git-prompt machinery. e.g.
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# Bash: PROMPT_COMMAND='__git_ps1 "\u@\h:\w" "\\\$ "'
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# will show username, at-sign, host, colon, cwd, then
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# various status string, followed by dollar and SP, as
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# your prompt.
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# ZSH: precmd () { __git_ps1 "%n" ":%~$ " "|%s" }
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# will show username, pipe, then various status string,
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# followed by colon, cwd, dollar and SP, as your prompt.
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# Optionally, you can supply a third argument with a printf
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# format string to finetune the output of the branch status
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#
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# The repository status will be displayed only if you are currently in a
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# git repository. The %s token is the placeholder for the shown status.
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#
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# The prompt status always includes the current branch name.
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#
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# In addition, if you set GIT_PS1_SHOWDIRTYSTATE to a nonempty value,
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# unstaged (*) and staged (+) changes will be shown next to the branch
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# name. You can configure this per-repository with the
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# bash.showDirtyState variable, which defaults to true once
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# GIT_PS1_SHOWDIRTYSTATE is enabled.
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#
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# You can also see if currently something is stashed, by setting
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# GIT_PS1_SHOWSTASHSTATE to a nonempty value. If something is stashed,
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# then a '$' will be shown next to the branch name.
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#
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# If you would like to see if there're untracked files, then you can set
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# GIT_PS1_SHOWUNTRACKEDFILES to a nonempty value. If there're untracked
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# files, then a '%' will be shown next to the branch name. You can
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# configure this per-repository with the bash.showUntrackedFiles
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# variable, which defaults to true once GIT_PS1_SHOWUNTRACKEDFILES is
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# enabled.
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#
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# If you would like to see the difference between HEAD and its upstream,
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# set GIT_PS1_SHOWUPSTREAM="auto". A "<" indicates you are behind, ">"
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# indicates you are ahead, "<>" indicates you have diverged and "="
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# indicates that there is no difference. You can further control
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# behaviour by setting GIT_PS1_SHOWUPSTREAM to a space-separated list
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# of values:
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#
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# verbose show number of commits ahead/behind (+/-) upstream
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# name if verbose, then also show the upstream abbrev name
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# legacy don't use the '--count' option available in recent
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# versions of git-rev-list
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# git always compare HEAD to @{upstream}
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# svn always compare HEAD to your SVN upstream
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#
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# You can change the separator between the branch name and the above
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# state symbols by setting GIT_PS1_STATESEPARATOR. The default separator
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# is SP.
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#
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# When there is an in-progress operation such as a merge, rebase,
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# revert, cherry-pick, or bisect, the prompt will include information
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# related to the operation, often in the form "|<OPERATION-NAME>".
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#
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# When the repository has a sparse-checkout, a notification of the form
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# "|SPARSE" will be included in the prompt. This can be shortened to a
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# single '?' character by setting GIT_PS1_COMPRESSSPARSESTATE, or omitted
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# by setting GIT_PS1_OMITSPARSESTATE.
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#
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# By default, __git_ps1 will compare HEAD to your SVN upstream if it can
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# find one, or @{upstream} otherwise. Once you have set
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# GIT_PS1_SHOWUPSTREAM, you can override it on a per-repository basis by
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# setting the bash.showUpstream config variable.
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#
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# If you would like to see more information about the identity of
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# commits checked out as a detached HEAD, set GIT_PS1_DESCRIBE_STYLE
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# to one of these values:
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#
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# contains relative to newer annotated tag (v1.6.3.2~35)
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# branch relative to newer tag or branch (master~4)
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# describe relative to older annotated tag (v1.6.3.1-13-gdd42c2f)
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# tag relative to any older tag (v1.6.3.1-13-gdd42c2f)
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# default exactly matching tag
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#
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# If you would like a colored hint about the current dirty state, set
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# GIT_PS1_SHOWCOLORHINTS to a nonempty value. The colors are based on
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# the colored output of "git status -sb" and are available only when
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# using __git_ps1 for PROMPT_COMMAND or precmd in Bash,
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# but always available in Zsh.
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#
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# If you would like __git_ps1 to do nothing in the case when the current
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# directory is set up to be ignored by git, then set
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# GIT_PS1_HIDE_IF_PWD_IGNORED to a nonempty value. Override this on the
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# repository level by setting bash.hideIfPwdIgnored to "false".
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# check whether printf supports -v
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__git_printf_supports_v=
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printf -v __git_printf_supports_v -- '%s' yes >/dev/null 2>&1
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# stores the divergence from upstream in $p
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# used by GIT_PS1_SHOWUPSTREAM
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__git_ps1_show_upstream ()
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{
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local key value
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local svn_remote svn_url_pattern count n
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local upstream=git legacy="" verbose="" name=""
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svn_remote=()
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# get some config options from git-config
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local output="$(git config -z --get-regexp '^(svn-remote\..*\.url|bash\.showupstream)$' 2>/dev/null | tr '\0\n' '\n ')"
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while read -r key value; do
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case "$key" in
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bash.showupstream)
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GIT_PS1_SHOWUPSTREAM="$value"
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if [[ -z "${GIT_PS1_SHOWUPSTREAM}" ]]; then
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p=""
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return
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fi
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;;
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svn-remote.*.url)
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svn_remote[$((${#svn_remote[@]} + 1))]="$value"
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svn_url_pattern="$svn_url_pattern\\|$value"
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upstream=svn+git # default upstream is SVN if available, else git
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;;
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esac
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done <<< "$output"
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# parse configuration values
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local option
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for option in ${GIT_PS1_SHOWUPSTREAM}; do
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case "$option" in
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git|svn) upstream="$option" ;;
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verbose) verbose=1 ;;
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legacy) legacy=1 ;;
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name) name=1 ;;
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esac
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done
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# Find our upstream
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case "$upstream" in
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git) upstream="@{upstream}" ;;
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svn*)
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# get the upstream from the "git-svn-id: ..." in a commit message
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# (git-svn uses essentially the same procedure internally)
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local -a svn_upstream
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svn_upstream=($(git log --first-parent -1 \
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--grep="^git-svn-id: \(${svn_url_pattern#??}\)" 2>/dev/null))
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if [[ 0 -ne ${#svn_upstream[@]} ]]; then
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svn_upstream=${svn_upstream[${#svn_upstream[@]} - 2]}
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svn_upstream=${svn_upstream%@*}
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local n_stop="${#svn_remote[@]}"
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for ((n=1; n <= n_stop; n++)); do
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svn_upstream=${svn_upstream#${svn_remote[$n]}}
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done
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if [[ -z "$svn_upstream" ]]; then
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# default branch name for checkouts with no layout:
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upstream=${GIT_SVN_ID:-git-svn}
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else
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upstream=${svn_upstream#/}
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fi
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elif [[ "svn+git" = "$upstream" ]]; then
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upstream="@{upstream}"
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fi
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;;
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esac
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# Find how many commits we are ahead/behind our upstream
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if [[ -z "$legacy" ]]; then
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count="$(git rev-list --count --left-right \
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"$upstream"...HEAD 2>/dev/null)"
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else
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# produce equivalent output to --count for older versions of git
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local commits
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if commits="$(git rev-list --left-right "$upstream"...HEAD 2>/dev/null)"
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then
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local commit behind=0 ahead=0
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for commit in $commits
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do
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case "$commit" in
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"<"*) ((behind++)) ;;
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*) ((ahead++)) ;;
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esac
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done
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count="$behind $ahead"
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else
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count=""
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fi
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fi
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# calculate the result
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if [[ -z "$verbose" ]]; then
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case "$count" in
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"") # no upstream
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p="" ;;
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"0 0") # equal to upstream
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p="=" ;;
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"0 "*) # ahead of upstream
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p=">" ;;
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*" 0") # behind upstream
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p="<" ;;
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*) # diverged from upstream
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p="<>" ;;
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esac
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else
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case "$count" in
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"") # no upstream
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p="" ;;
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"0 0") # equal to upstream
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p=" u=" ;;
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"0 "*) # ahead of upstream
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p=" u+${count#0 }" ;;
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*" 0") # behind upstream
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p=" u-${count% 0}" ;;
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*) # diverged from upstream
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p=" u+${count#* }-${count% *}" ;;
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esac
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if [[ -n "$count" && -n "$name" ]]; then
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__git_ps1_upstream_name=$(git rev-parse \
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--abbrev-ref "$upstream" 2>/dev/null)
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if [ $pcmode = yes ] && [ $ps1_expanded = yes ]; then
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p="$p \${__git_ps1_upstream_name}"
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else
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p="$p ${__git_ps1_upstream_name}"
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# not needed anymore; keep user's
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# environment clean
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unset __git_ps1_upstream_name
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fi
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fi
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fi
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}
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# Helper function that is meant to be called from __git_ps1. It
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# injects color codes into the appropriate gitstring variables used
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# to build a gitstring.
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__git_ps1_colorize_gitstring ()
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{
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if [[ -n ${ZSH_VERSION-} ]]; then
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local c_red='%F{red}'
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local c_green='%F{green}'
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local c_lblue='%F{blue}'
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local c_clear='%f'
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else
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# Using \[ and \] around colors is necessary to prevent
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# issues with command line editing/browsing/completion!
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local c_red='\[\e[31m\]'
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local c_green='\[\e[32m\]'
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local c_lblue='\[\e[1;34m\]'
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local c_clear='\[\e[0m\]'
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fi
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local bad_color=$c_red
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local ok_color=$c_green
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local flags_color="$c_lblue"
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local branch_color=""
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if [ $detached = no ]; then
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branch_color="$ok_color"
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else
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branch_color="$bad_color"
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fi
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c="$branch_color$c"
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z="$c_clear$z"
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if [ "$w" = "*" ]; then
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w="$bad_color$w"
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fi
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if [ -n "$i" ]; then
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i="$ok_color$i"
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fi
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if [ -n "$s" ]; then
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s="$flags_color$s"
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fi
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if [ -n "$u" ]; then
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u="$bad_color$u"
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fi
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r="$c_clear$r"
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}
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# Helper function to read the first line of a file into a variable.
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# __git_eread requires 2 arguments, the file path and the name of the
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# variable, in that order.
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__git_eread ()
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{
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test -r "$1" && IFS=$'\r\n' read "$2" <"$1"
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}
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# see if a cherry-pick or revert is in progress, if the user has committed a
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# conflict resolution with 'git commit' in the middle of a sequence of picks or
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# reverts then CHERRY_PICK_HEAD/REVERT_HEAD will not exist so we have to read
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# the todo file.
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__git_sequencer_status ()
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{
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local todo
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if test -f "$g/CHERRY_PICK_HEAD"
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then
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r="|CHERRY-PICKING"
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return 0;
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elif test -f "$g/REVERT_HEAD"
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then
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r="|REVERTING"
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return 0;
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elif __git_eread "$g/sequencer/todo" todo
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then
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case "$todo" in
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p[\ \ ]|pick[\ \ ]*)
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r="|CHERRY-PICKING"
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return 0
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;;
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revert[\ \ ]*)
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r="|REVERTING"
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return 0
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;;
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esac
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fi
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return 1
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}
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# __git_ps1 accepts 0 or 1 arguments (i.e., format string)
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# when called from PS1 using command substitution
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# in this mode it prints text to add to bash PS1 prompt (includes branch name)
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#
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# __git_ps1 requires 2 or 3 arguments when called from PROMPT_COMMAND (pc)
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# in that case it _sets_ PS1. The arguments are parts of a PS1 string.
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# when two arguments are given, the first is prepended and the second appended
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# to the state string when assigned to PS1.
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# The optional third parameter will be used as printf format string to further
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# customize the output of the git-status string.
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# In this mode you can request colored hints using GIT_PS1_SHOWCOLORHINTS=true
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__git_ps1 ()
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{
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# preserve exit status
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local exit=$?
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local pcmode=no
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local detached=no
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local ps1pc_start='\u@\h:\w '
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local ps1pc_end='\$ '
|
||
|
|
local printf_format=' (%s)'
|
||
|
|
|
||
|
|
case "$#" in
|
||
|
|
2|3) pcmode=yes
|
||
|
|
ps1pc_start="$1"
|
||
|
|
ps1pc_end="$2"
|
||
|
|
printf_format="${3:-$printf_format}"
|
||
|
|
# set PS1 to a plain prompt so that we can
|
||
|
|
# simply return early if the prompt should not
|
||
|
|
# be decorated
|
||
|
|
PS1="$ps1pc_start$ps1pc_end"
|
||
|
|
;;
|
||
|
|
0|1) printf_format="${1:-$printf_format}"
|
||
|
|
;;
|
||
|
|
*) return $exit
|
||
|
|
;;
|
||
|
|
esac
|
||
|
|
|
||
|
|
# ps1_expanded: This variable is set to 'yes' if the shell
|
||
|
|
# subjects the value of PS1 to parameter expansion:
|
||
|
|
#
|
||
|
|
# * bash does unless the promptvars option is disabled
|
||
|
|
# * zsh does not unless the PROMPT_SUBST option is set
|
||
|
|
# * POSIX shells always do
|
||
|
|
#
|
||
|
|
# If the shell would expand the contents of PS1 when drawing
|
||
|
|
# the prompt, a raw ref name must not be included in PS1.
|
||
|
|
# This protects the user from arbitrary code execution via
|
||
|
|
# specially crafted ref names. For example, a ref named
|
||
|
|
# 'refs/heads/$(IFS=_;cmd=sudo_rm_-rf_/;$cmd)' might cause the
|
||
|
|
# shell to execute 'sudo rm -rf /' when the prompt is drawn.
|
||
|
|
#
|
||
|
|
# Instead, the ref name should be placed in a separate global
|
||
|
|
# variable (in the __git_ps1_* namespace to avoid colliding
|
||
|
|
# with the user's environment) and that variable should be
|
||
|
|
# referenced from PS1. For example:
|
||
|
|
#
|
||
|
|
# __git_ps1_foo=$(do_something_to_get_ref_name)
|
||
|
|
# PS1="...stuff...\${__git_ps1_foo}...stuff..."
|
||
|
|
#
|
||
|
|
# If the shell does not expand the contents of PS1, the raw
|
||
|
|
# ref name must be included in PS1.
|
||
|
|
#
|
||
|
|
# The value of this variable is only relevant when in pcmode.
|
||
|
|
#
|
||
|
|
# Assume that the shell follows the POSIX specification and
|
||
|
|
# expands PS1 unless determined otherwise. (This is more
|
||
|
|
# likely to be correct if the user has a non-bash, non-zsh
|
||
|
|
# shell and safer than the alternative if the assumption is
|
||
|
|
# incorrect.)
|
||
|
|
#
|
||
|
|
local ps1_expanded=yes
|
||
|
|
[ -z "${ZSH_VERSION-}" ] || [[ -o PROMPT_SUBST ]] || ps1_expanded=no
|
||
|
|
[ -z "${BASH_VERSION-}" ] || shopt -q promptvars || ps1_expanded=no
|
||
|
|
|
||
|
|
local repo_info rev_parse_exit_code
|
||
|
|
repo_info="$(git rev-parse --git-dir --is-inside-git-dir \
|
||
|
|
--is-bare-repository --is-inside-work-tree \
|
||
|
|
--short HEAD 2>/dev/null)"
|
||
|
|
rev_parse_exit_code="$?"
|
||
|
|
|
||
|
|
if [ -z "$repo_info" ]; then
|
||
|
|
return $exit
|
||
|
|
fi
|
||
|
|
|
||
|
|
local short_sha=""
|
||
|
|
if [ "$rev_parse_exit_code" = "0" ]; then
|
||
|
|
short_sha="${repo_info##*$'\n'}"
|
||
|
|
repo_info="${repo_info%$'\n'*}"
|
||
|
|
fi
|
||
|
|
local inside_worktree="${repo_info##*$'\n'}"
|
||
|
|
repo_info="${repo_info%$'\n'*}"
|
||
|
|
local bare_repo="${repo_info##*$'\n'}"
|
||
|
|
repo_info="${repo_info%$'\n'*}"
|
||
|
|
local inside_gitdir="${repo_info##*$'\n'}"
|
||
|
|
local g="${repo_info%$'\n'*}"
|
||
|
|
|
||
|
|
if [ "true" = "$inside_worktree" ] &&
|
||
|
|
[ -n "${GIT_PS1_HIDE_IF_PWD_IGNORED-}" ] &&
|
||
|
|
[ "$(git config --bool bash.hideIfPwdIgnored)" != "false" ] &&
|
||
|
|
git check-ignore -q .
|
||
|
|
then
|
||
|
|
return $exit
|
||
|
|
fi
|
||
|
|
|
||
|
|
local sparse=""
|
||
|
|
if [ -z "${GIT_PS1_COMPRESSSPARSESTATE}" ] &&
|
||
|
|
[ -z "${GIT_PS1_OMITSPARSESTATE}" ] &&
|
||
|
|
[ "$(git config --bool core.sparseCheckout)" = "true" ]; then
|
||
|
|
sparse="|SPARSE"
|
||
|
|
fi
|
||
|
|
|
||
|
|
local r=""
|
||
|
|
local b=""
|
||
|
|
local step=""
|
||
|
|
local total=""
|
||
|
|
if [ -d "$g/rebase-merge" ]; then
|
||
|
|
__git_eread "$g/rebase-merge/head-name" b
|
||
|
|
__git_eread "$g/rebase-merge/msgnum" step
|
||
|
|
__git_eread "$g/rebase-merge/end" total
|
||
|
|
r="|REBASE"
|
||
|
|
else
|
||
|
|
if [ -d "$g/rebase-apply" ]; then
|
||
|
|
__git_eread "$g/rebase-apply/next" step
|
||
|
|
__git_eread "$g/rebase-apply/last" total
|
||
|
|
if [ -f "$g/rebase-apply/rebasing" ]; then
|
||
|
|
__git_eread "$g/rebase-apply/head-name" b
|
||
|
|
r="|REBASE"
|
||
|
|
elif [ -f "$g/rebase-apply/applying" ]; then
|
||
|
|
r="|AM"
|
||
|
|
else
|
||
|
|
r="|AM/REBASE"
|
||
|
|
fi
|
||
|
|
elif [ -f "$g/MERGE_HEAD" ]; then
|
||
|
|
r="|MERGING"
|
||
|
|
elif __git_sequencer_status; then
|
||
|
|
:
|
||
|
|
elif [ -f "$g/BISECT_LOG" ]; then
|
||
|
|
r="|BISECTING"
|
||
|
|
fi
|
||
|
|
|
||
|
|
if [ -n "$b" ]; then
|
||
|
|
:
|
||
|
|
elif [ -h "$g/HEAD" ]; then
|
||
|
|
# symlink symbolic ref
|
||
|
|
b="$(git symbolic-ref HEAD 2>/dev/null)"
|
||
|
|
else
|
||
|
|
local head=""
|
||
|
|
if ! __git_eread "$g/HEAD" head; then
|
||
|
|
return $exit
|
||
|
|
fi
|
||
|
|
# is it a symbolic ref?
|
||
|
|
b="${head#ref: }"
|
||
|
|
if [ "$head" = "$b" ]; then
|
||
|
|
detached=yes
|
||
|
|
b="$(
|
||
|
|
case "${GIT_PS1_DESCRIBE_STYLE-}" in
|
||
|
|
(contains)
|
||
|
|
git describe --contains HEAD ;;
|
||
|
|
(branch)
|
||
|
|
git describe --contains --all HEAD ;;
|
||
|
|
(tag)
|
||
|
|
git describe --tags HEAD ;;
|
||
|
|
(describe)
|
||
|
|
git describe HEAD ;;
|
||
|
|
(* | default)
|
||
|
|
git describe --tags --exact-match HEAD ;;
|
||
|
|
esac 2>/dev/null)" ||
|
||
|
|
|
||
|
|
b="$short_sha..."
|
||
|
|
b="($b)"
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
|
||
|
|
if [ -n "$step" ] && [ -n "$total" ]; then
|
||
|
|
r="$r $step/$total"
|
||
|
|
fi
|
||
|
|
|
||
|
|
local w=""
|
||
|
|
local i=""
|
||
|
|
local s=""
|
||
|
|
local u=""
|
||
|
|
local h=""
|
||
|
|
local c=""
|
||
|
|
local p=""
|
||
|
|
|
||
|
|
if [ "true" = "$inside_gitdir" ]; then
|
||
|
|
if [ "true" = "$bare_repo" ]; then
|
||
|
|
c="BARE:"
|
||
|
|
else
|
||
|
|
b="GIT_DIR!"
|
||
|
|
fi
|
||
|
|
elif [ "true" = "$inside_worktree" ]; then
|
||
|
|
if [ -n "${GIT_PS1_SHOWDIRTYSTATE-}" ] &&
|
||
|
|
[ "$(git config --bool bash.showDirtyState)" != "false" ]
|
||
|
|
then
|
||
|
|
git diff --no-ext-diff --quiet || w="*"
|
||
|
|
git diff --no-ext-diff --cached --quiet || i="+"
|
||
|
|
if [ -z "$short_sha" ] && [ -z "$i" ]; then
|
||
|
|
i="#"
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
if [ -n "${GIT_PS1_SHOWSTASHSTATE-}" ] &&
|
||
|
|
git rev-parse --verify --quiet refs/stash >/dev/null
|
||
|
|
then
|
||
|
|
s="$"
|
||
|
|
fi
|
||
|
|
|
||
|
|
if [ -n "${GIT_PS1_SHOWUNTRACKEDFILES-}" ] &&
|
||
|
|
[ "$(git config --bool bash.showUntrackedFiles)" != "false" ] &&
|
||
|
|
git ls-files --others --exclude-standard --directory --no-empty-directory --error-unmatch -- ':/*' >/dev/null 2>/dev/null
|
||
|
|
then
|
||
|
|
u="%${ZSH_VERSION+%}"
|
||
|
|
fi
|
||
|
|
|
||
|
|
if [ -n "${GIT_PS1_COMPRESSSPARSESTATE}" ] &&
|
||
|
|
[ "$(git config --bool core.sparseCheckout)" = "true" ]; then
|
||
|
|
h="?"
|
||
|
|
fi
|
||
|
|
|
||
|
|
if [ -n "${GIT_PS1_SHOWUPSTREAM-}" ]; then
|
||
|
|
__git_ps1_show_upstream
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
|
||
|
|
local z="${GIT_PS1_STATESEPARATOR-" "}"
|
||
|
|
|
||
|
|
# NO color option unless in PROMPT_COMMAND mode or it's Zsh
|
||
|
|
if [ -n "${GIT_PS1_SHOWCOLORHINTS-}" ]; then
|
||
|
|
if [ $pcmode = yes ] || [ -n "${ZSH_VERSION-}" ]; then
|
||
|
|
__git_ps1_colorize_gitstring
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
|
||
|
|
b=${b##refs/heads/}
|
||
|
|
if [ $pcmode = yes ] && [ $ps1_expanded = yes ]; then
|
||
|
|
__git_ps1_branch_name=$b
|
||
|
|
b="\${__git_ps1_branch_name}"
|
||
|
|
fi
|
||
|
|
|
||
|
|
local f="$h$w$i$s$u"
|
||
|
|
local gitstring="$c$b${f:+$z$f}${sparse}$r$p"
|
||
|
|
|
||
|
|
if [ $pcmode = yes ]; then
|
||
|
|
if [ "${__git_printf_supports_v-}" != yes ]; then
|
||
|
|
gitstring=$(printf -- "$printf_format" "$gitstring")
|
||
|
|
else
|
||
|
|
printf -v gitstring -- "$printf_format" "$gitstring"
|
||
|
|
fi
|
||
|
|
PS1="$ps1pc_start$gitstring$ps1pc_end"
|
||
|
|
else
|
||
|
|
printf -- "$printf_format" "$gitstring"
|
||
|
|
fi
|
||
|
|
|
||
|
|
return $exit
|
||
|
|
}
|