Merge pull request #5104 from felipec/fc/gitfast

gitfast: update to the latest upstream Git and a couple of fixes

plugins/gitfast/_git

@@ -104,6 +104,7 @@ __git_zsh_bash_func ()
 
 	local expansion=$(__git_aliased_command "$command")
 	if [ -n "$expansion" ]; then
+		words[1]=$expansion
 		completion_func="_git_${expansion//-/_}"
 		declare -f $completion_func >/dev/null && $completion_func
 	fi
@@ -213,8 +214,10 @@ _git ()
 
 	if (( $+functions[__${service}_zsh_main] )); then
 		__${service}_zsh_main
-	else
+	elif (( $+functions[__${service}_main] )); then
 		emulate ksh -c __${service}_main
+	elif (( $+functions[_${service}] )); then
+		emulate ksh -c _${service}
 	fi
 
 	let _ret && _default && _ret=0

plugins/gitfast/git-prompt.sh

@@ -66,6 +66,10 @@
 #     git           always compare HEAD to @{upstream}
 #     svn           always compare HEAD to your SVN upstream
 #
+# You can change the separator between the branch name and the above
+# state symbols by setting GIT_PS1_STATESEPARATOR. The default separator
+# is SP.
+#
 # By default, __git_ps1 will compare HEAD to your SVN upstream if it can
 # find one, or @{upstream} otherwise.  Once you have set
 # GIT_PS1_SHOWUPSTREAM, you can override it on a per-repository basis by
@@ -84,6 +88,11 @@
 # GIT_PS1_SHOWCOLORHINTS to a nonempty value. The colors are based on
 # the colored output of "git status -sb" and are available only when
 # using __git_ps1 for PROMPT_COMMAND or precmd.
+#
+# If you would like __git_ps1 to do nothing in the case when the current
+# directory is set up to be ignored by git, then set
+# GIT_PS1_HIDE_IF_PWD_IGNORED to a nonempty value. Override this on the
+# repository level by setting bash.hideIfPwdIgnored to "false".
 
 # check whether printf supports -v
 __git_printf_supports_v=
@@ -207,7 +216,16 @@ __git_ps1_show_upstream ()
 			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
 
@@ -259,9 +277,9 @@ __git_ps1_colorize_gitstring ()
 	r="$c_clear$r"
 }
 
-eread ()
+__git_eread ()
 {
-	f="$1"
+	local f="$1"
 	shift
 	test -r "$f" && read "$@" <"$f"
 }
@@ -279,6 +297,8 @@ eread ()
 # In this mode you can request colored hints using GIT_PS1_SHOWCOLORHINTS=true
 __git_ps1 ()
 {
+	# preserve exit status
+	local exit=$?
 	local pcmode=no
 	local detached=no
 	local ps1pc_start='\u@\h:\w '
@@ -290,13 +310,54 @@ __git_ps1 ()
 			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
+		*)	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 \
@@ -304,11 +365,7 @@ __git_ps1 ()
 	rev_parse_exit_code="$?"
 
 	if [ -z "$repo_info" ]; then
-		if [ $pcmode = yes ]; then
-			#In PC mode PS1 always needs to be set
-			PS1="$ps1pc_start$ps1pc_end"
-		fi
-		return
+		return $exit
 	fi
 
 	local short_sha
@@ -323,14 +380,22 @@ __git_ps1 ()
 	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 $exit
+	fi
+
 	local r=""
 	local b=""
 	local step=""
 	local total=""
 	if [ -d "$g/rebase-merge" ]; then
-		eread "$g/rebase-merge/head-name" b
-		eread "$g/rebase-merge/msgnum" step
-		eread "$g/rebase-merge/end" total
+		__git_eread "$g/rebase-merge/head-name" b
+		__git_eread "$g/rebase-merge/msgnum" step
+		__git_eread "$g/rebase-merge/end" total
 		if [ -f "$g/rebase-merge/interactive" ]; then
 			r="|REBASE-i"
 		else
@@ -338,10 +403,10 @@ __git_ps1 ()
 		fi
 	else
 		if [ -d "$g/rebase-apply" ]; then
-			eread "$g/rebase-apply/next" step
-			eread "$g/rebase-apply/last" total
+			__git_eread "$g/rebase-apply/next" step
+			__git_eread "$g/rebase-apply/last" total
 			if [ -f "$g/rebase-apply/rebasing" ]; then
-				eread "$g/rebase-apply/head-name" b
+				__git_eread "$g/rebase-apply/head-name" b
 				r="|REBASE"
 			elif [ -f "$g/rebase-apply/applying" ]; then
 				r="|AM"
@@ -365,11 +430,8 @@ __git_ps1 ()
 			b="$(git symbolic-ref HEAD 2>/dev/null)"
 		else
 			local head=""
-			if ! eread "$g/HEAD" head; then
-				if [ $pcmode = yes ]; then
-					PS1="$ps1pc_start$ps1pc_end"
-				fi
-				return
+			if ! __git_eread "$g/HEAD" head; then
+				return $exit
 			fi
 			# is it a symbolic ref?
 			b="${head#ref: }"
@@ -414,21 +476,21 @@ __git_ps1 ()
 		if [ -n "${GIT_PS1_SHOWDIRTYSTATE-}" ] &&
 		   [ "$(git config --bool bash.showDirtyState)" != "false" ]
 		then
-			git diff --no-ext-diff --quiet --exit-code || w="*"
-			if [ -n "$short_sha" ]; then
-				git diff-index --cached --quiet HEAD -- || i="+"
-			else
+			git diff --no-ext-diff --quiet || w="*"
+			git diff --no-ext-diff --cached --quiet || i="+"
+			if [ -z "$short_sha" ] && [ -z "$i" ]; then
 				i="#"
 			fi
 		fi
 		if [ -n "${GIT_PS1_SHOWSTASHSTATE-}" ] &&
-		   [ -r "$g/refs/stash" ]; then
+		   git rev-parse --verify --quiet refs/stash >/dev/null
+		then
 			s="$"
 		fi
 
 		if [ -n "${GIT_PS1_SHOWUNTRACKEDFILES-}" ] &&
 		   [ "$(git config --bool bash.showUntrackedFiles)" != "false" ] &&
-		   git ls-files --others --exclude-standard --error-unmatch -- '*' >/dev/null 2>/dev/null
+		   git ls-files --others --exclude-standard --directory --no-empty-directory --error-unmatch -- ':/*' >/dev/null 2>/dev/null
 		then
 			u="%${ZSH_VERSION+%}"
 		fi
@@ -440,13 +502,21 @@ __git_ps1 ()
 
 	local z="${GIT_PS1_STATESEPARATOR-" "}"
 
-	# NO color option unless in PROMPT_COMMAND mode
-	if [ $pcmode = yes ] && [ -n "${GIT_PS1_SHOWCOLORHINTS-}" ]; then
+	# 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="$w$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
@@ -458,4 +528,6 @@ __git_ps1 ()
 	else
 		printf -- "$printf_format" "$gitstring"
 	fi
+
+	return $exit
 }