[PATCH v2 3/4] introduce new format for git stash create

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git stash create currently supports a positional argument for adding a
message.  This is not quite in line with how git commands usually take
comments (using a -m flag).

Add a new syntax for adding a message to git stash create using a -m
flag.  This is with the goal of deprecating the old style git stash
create with positional arguments.

This also adds a -u argument, for untracked files.  This is already used
internally as another positional argument, but can now be used from the
command line.

Signed-off-by: Thomas Gummerer <t.gummerer@xxxxxxxxx>
---
 Documentation/git-stash.txt |  1 +
 git-stash.sh                | 50 +++++++++++++++++++++++++++++++++++++++++----
 t/t3903-stash.sh            | 18 ++++++++++++++++
 3 files changed, 65 insertions(+), 4 deletions(-)

diff --git a/Documentation/git-stash.txt b/Documentation/git-stash.txt
index 0fc23c25ee..0bce33e3fc 100644
--- a/Documentation/git-stash.txt
+++ b/Documentation/git-stash.txt
@@ -17,6 +17,7 @@ SYNOPSIS
 	     [-u|--include-untracked] [-a|--all] [<message>]]
 'git stash' clear
 'git stash' create [<message>]
+'git stash' create [-m <message>] [-u|--include-untracked <untracked|all>]
 'git stash' store [-m|--message <message>] [-q|--quiet] <commit>
 
 DESCRIPTION
diff --git a/git-stash.sh b/git-stash.sh
index 8528708f61..5f08b43967 100755
--- a/git-stash.sh
+++ b/git-stash.sh
@@ -56,8 +56,50 @@ clear_stash () {
 }
 
 create_stash () {
-	stash_msg="$1"
-	untracked="$2"
+	stash_msg=
+	untracked=
+	new_style=
+	while test $# != 0
+	do
+		case "$1" in
+		-m|--message)
+			shift
+			stash_msg="$1"
+			new_style=t
+			;;
+		-u|--include-untracked)
+			shift
+			untracked="$1"
+			new_style=t
+			;;
+		*)
+			if test -n "$new_style"
+			then
+				echo "invalid argument"
+				option="$1"
+				# TRANSLATORS: $option is an invalid option, like
+				# `--blah-blah'. The 7 spaces at the beginning of the
+				# second line correspond to "error: ". So you should line
+				# up the second line with however many characters the
+				# translation of "error: " takes in your language. E.g. in
+				# English this is:
+				#
+				#    $ git stash save --blah-blah 2>&1 | head -n 2
+				#    error: unknown option for 'stash save': --blah-blah
+				#           To provide a message, use git stash save -- '--blah-blah'
+				eval_gettextln "error: unknown option for 'stash create': \$option"
+				usage
+			fi
+			break
+			;;
+		esac
+		shift
+	done
+
+	if test -z "$new_style"
+	then
+		stash_msg="$*"
+	fi
 
 	git update-index -q --refresh
 	if no_changes
@@ -265,7 +307,7 @@ push_stash () {
 	git reflog exists $ref_stash ||
 		clear_stash || die "$(gettext "Cannot initialize stash")"
 
-	create_stash "$stash_msg" $untracked
+	create_stash -m "$stash_msg" -u "$untracked"
 	store_stash -m "$stash_msg" -q $w_commit ||
 	die "$(gettext "Cannot save the current status")"
 	say "$(eval_gettext "Saved working directory and index state \$stash_msg")"
@@ -697,7 +739,7 @@ clear)
 	;;
 create)
 	shift
-	create_stash "$*" && echo "$w_commit"
+	create_stash "$@" && echo "$w_commit"
 	;;
 store)
 	shift
diff --git a/t/t3903-stash.sh b/t/t3903-stash.sh
index 0171b824c9..34e9610bb6 100755
--- a/t/t3903-stash.sh
+++ b/t/t3903-stash.sh
@@ -784,4 +784,22 @@ test_expect_success 'push -m shows right message' '
 	test_cmp expect actual
 '
 
+test_expect_success 'deprecated version of stash create stores correct message' '
+	>foo &&
+	git add foo &&
+	STASH_ID=$(git stash create "create test message") &&
+	echo "On master: create test message" >expect &&
+	git show --pretty=%s ${STASH_ID} | head -n1 >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success 'new style stash create stores correct message' '
+	>foo &&
+	git add foo &&
+	STASH_ID=$(git stash create -m "create test message new style") &&
+	echo "On master: create test message new style" >expect &&
+	git show --pretty=%s ${STASH_ID} | head -n1 >actual &&
+	test_cmp expect actual
+'
+
 test_done
-- 
2.11.0.297.g9a2118ac0b.dirty




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