p=" u+${count#* }-${count% *}" ;;
esac
if [[ -n "$count" && -n "$name" ]]; then
- p="$p $(git rev-parse --abbrev-ref "$upstream" 2>/dev/null)"
+ __git_ps1_upstream_name=$(git rev-parse \
+ --abbrev-ref "$upstream" 2>/dev/null)
+ if [ $pcmode = yes ] && [ $ps1_expanded = yes ]; then
+ p="$p \${__git_ps1_upstream_name}"
+ else
+ p="$p ${__git_ps1_upstream_name}"
+ # not needed anymore; keep user's
+ # environment clean
+ unset __git_ps1_upstream_name
+ fi
fi
fi
r="$c_clear$r"
}
+__git_eread ()
+{
+ f="$1"
+ shift
+ test -r "$f" && read "$@" <"$f"
+}
+
# __git_ps1 accepts 0 or 1 arguments (i.e., format string)
# when called from PS1 using command substitution
# in this mode it prints text to add to bash PS1 prompt (includes branch name)
;;
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 \
local step=""
local total=""
if [ -d "$g/rebase-merge" ]; then
- read b 2>/dev/null <"$g/rebase-merge/head-name"
- read step 2>/dev/null <"$g/rebase-merge/msgnum"
- read total 2>/dev/null <"$g/rebase-merge/end"
+ __git_eread "$g/rebase-merge/head-name" b
+ __git_eread "$g/rebase-merge/msgnum" step
+ __git_eread "$g/rebase-merge/end" total
if [ -f "$g/rebase-merge/interactive" ]; then
r="|REBASE-i"
else
fi
else
if [ -d "$g/rebase-apply" ]; then
- read step 2>/dev/null <"$g/rebase-apply/next"
- read total 2>/dev/null <"$g/rebase-apply/last"
+ __git_eread "$g/rebase-apply/next" step
+ __git_eread "$g/rebase-apply/last" total
if [ -f "$g/rebase-apply/rebasing" ]; then
- read b 2>/dev/null <"$g/rebase-apply/head-name"
+ __git_eread "$g/rebase-apply/head-name" b
r="|REBASE"
elif [ -f "$g/rebase-apply/applying" ]; then
r="|AM"
b="$(git symbolic-ref HEAD 2>/dev/null)"
else
local head=""
- if ! read head 2>/dev/null <"$g/HEAD"; then
+ if ! __git_eread "$g/HEAD" head; then
if [ $pcmode = yes ]; then
PS1="$ps1pc_start$ps1pc_end"
fi
__git_ps1_colorize_gitstring
fi
+ b=${b##refs/heads/}
+ if [ $pcmode = yes ] && [ $ps1_expanded = yes ]; then
+ __git_ps1_branch_name=$b
+ b="\${__git_ps1_branch_name}"
+ fi
+
local f="$w$i$s$u"
- local gitstring="$c${b##refs/heads/}${f:+$z$f}$r$p"
+ local gitstring="$c$b${f:+$z$f}$r$p"
if [ $pcmode = yes ]; then
if [ "${__git_printf_supports_v-}" != yes ]; then