Force the sticked form for options with optional arguments.

This forbids "git tag -n <number> -l" we allowed earlier, so
adjust t7004 while at it.

Signed-off-by: Pierre Habouzit <madcoder@debian.org>

parse-options.c

diff --git a/parse-options.c b/parse-options.c
index e12b428..7a08a0c 100644
--- a/parse-options.c
+++ b/parse-options.c
@@ -89,7 +89,7 @@
 			*(const char **)opt->value = NULL;
 			return 0;
 		}
-		if (opt->flags & PARSE_OPT_OPTARG && (!arg || *arg == '-')) {
+		if (opt->flags & PARSE_OPT_OPTARG && !p->opt) {
 			*(const char **)opt->value = (const char *)opt->defval;
 			return 0;
 		}
@@ -103,7 +103,7 @@
 			return (*opt->callback)(opt, NULL, 1);
 		if (opt->flags & PARSE_OPT_NOARG)
 			return (*opt->callback)(opt, NULL, 0);
-		if (opt->flags & PARSE_OPT_OPTARG && (!arg || *arg == '-'))
+		if (opt->flags & PARSE_OPT_OPTARG && !p->opt)
 			return (*opt->callback)(opt, NULL, 0);
 		if (!arg)
 			return opterror(opt, "requires a value", flags);
@@ -114,7 +114,7 @@
 			*(int *)opt->value = 0;
 			return 0;
 		}
-		if (opt->flags & PARSE_OPT_OPTARG && (!arg || !isdigit(*arg))) {
+		if (opt->flags & PARSE_OPT_OPTARG && !p->opt) {
 			*(int *)opt->value = opt->defval;
 			return 0;
 		}

t/t7004-tag.sh

diff --git a/t/t7004-tag.sh b/t/t7004-tag.sh
index 6f41ce3..df496a9 100755
--- a/t/t7004-tag.sh
+++ b/t/t7004-tag.sh
@@ -491,21 +491,21 @@
 	echo "tag-one-line" >expect &&
 	git-tag -l | grep "^tag-one-line" >actual &&
 	git diff expect actual &&
-	git-tag -n 0 -l | grep "^tag-one-line" >actual &&
+	git-tag -n0 -l | grep "^tag-one-line" >actual &&
 	git diff expect actual &&
-	git-tag -n 0 -l tag-one-line >actual &&
+	git-tag -n0 -l tag-one-line >actual &&
 	git diff expect actual &&
 
 	echo "tag-one-line    A msg" >expect &&
-	git-tag -n 1 -l | grep "^tag-one-line" >actual &&
+	git-tag -n1 -l | grep "^tag-one-line" >actual &&
 	git diff expect actual &&
 	git-tag -n -l | grep "^tag-one-line" >actual &&
 	git diff expect actual &&
-	git-tag -n 1 -l tag-one-line >actual &&
+	git-tag -n1 -l tag-one-line >actual &&
 	git diff expect actual &&
-	git-tag -n 2 -l tag-one-line >actual &&
+	git-tag -n2 -l tag-one-line >actual &&
 	git diff expect actual &&
-	git-tag -n 999 -l tag-one-line >actual &&
+	git-tag -n999 -l tag-one-line >actual &&
 	git diff expect actual
 '
 
@@ -516,21 +516,21 @@
 	echo "tag-zero-lines" >expect &&
 	git-tag -l | grep "^tag-zero-lines" >actual &&
 	git diff expect actual &&
-	git-tag -n 0 -l | grep "^tag-zero-lines" >actual &&
+	git-tag -n0 -l | grep "^tag-zero-lines" >actual &&
 	git diff expect actual &&
-	git-tag -n 0 -l tag-zero-lines >actual &&
+	git-tag -n0 -l tag-zero-lines >actual &&
 	git diff expect actual &&
 
 	echo "tag-zero-lines  " >expect &&
-	git-tag -n 1 -l | grep "^tag-zero-lines" >actual &&
+	git-tag -n1 -l | grep "^tag-zero-lines" >actual &&
 	git diff expect actual &&
 	git-tag -n -l | grep "^tag-zero-lines" >actual &&
 	git diff expect actual &&
-	git-tag -n 1 -l tag-zero-lines >actual &&
+	git-tag -n1 -l tag-zero-lines >actual &&
 	git diff expect actual &&
-	git-tag -n 2 -l tag-zero-lines >actual &&
+	git-tag -n2 -l tag-zero-lines >actual &&
 	git diff expect actual &&
-	git-tag -n 999 -l tag-zero-lines >actual &&
+	git-tag -n999 -l tag-zero-lines >actual &&
 	git diff expect actual
 '
 
@@ -544,37 +544,37 @@
 	echo "tag-lines" >expect &&
 	git-tag -l | grep "^tag-lines" >actual &&
 	git diff expect actual &&
-	git-tag -n 0 -l | grep "^tag-lines" >actual &&
+	git-tag -n0 -l | grep "^tag-lines" >actual &&
 	git diff expect actual &&
-	git-tag -n 0 -l tag-lines >actual &&
+	git-tag -n0 -l tag-lines >actual &&
 	git diff expect actual &&
 
 	echo "tag-lines       tag line one" >expect &&
-	git-tag -n 1 -l | grep "^tag-lines" >actual &&
+	git-tag -n1 -l | grep "^tag-lines" >actual &&
 	git diff expect actual &&
 	git-tag -n -l | grep "^tag-lines" >actual &&
 	git diff expect actual &&
-	git-tag -n 1 -l tag-lines >actual &&
+	git-tag -n1 -l tag-lines >actual &&
 	git diff expect actual &&
 
 	echo "    tag line two" >>expect &&
-	git-tag -n 2 -l | grep "^ *tag.line" >actual &&
+	git-tag -n2 -l | grep "^ *tag.line" >actual &&
 	git diff expect actual &&
-	git-tag -n 2 -l tag-lines >actual &&
+	git-tag -n2 -l tag-lines >actual &&
 	git diff expect actual &&
 
 	echo "    tag line three" >>expect &&
-	git-tag -n 3 -l | grep "^ *tag.line" >actual &&
+	git-tag -n3 -l | grep "^ *tag.line" >actual &&
 	git diff expect actual &&
-	git-tag -n 3 -l tag-lines >actual &&
+	git-tag -n3 -l tag-lines >actual &&
 	git diff expect actual &&
-	git-tag -n 4 -l | grep "^ *tag.line" >actual &&
+	git-tag -n4 -l | grep "^ *tag.line" >actual &&
 	git diff expect actual &&
-	git-tag -n 4 -l tag-lines >actual &&
+	git-tag -n4 -l tag-lines >actual &&
 	git diff expect actual &&
-	git-tag -n 99 -l | grep "^ *tag.line" >actual &&
+	git-tag -n99 -l | grep "^ *tag.line" >actual &&
 	git diff expect actual &&
-	git-tag -n 99 -l tag-lines >actual &&
+	git-tag -n99 -l tag-lines >actual &&
 	git diff expect actual
 '
 
@@ -902,21 +902,21 @@
 	echo "stag-one-line" >expect &&
 	git-tag -l | grep "^stag-one-line" >actual &&
 	git diff expect actual &&
-	git-tag -n 0 -l | grep "^stag-one-line" >actual &&
+	git-tag -n0 -l | grep "^stag-one-line" >actual &&
 	git diff expect actual &&
-	git-tag -n 0 -l stag-one-line >actual &&
+	git-tag -n0 -l stag-one-line >actual &&
 	git diff expect actual &&
 
 	echo "stag-one-line   A message line signed" >expect &&
-	git-tag -n 1 -l | grep "^stag-one-line" >actual &&
+	git-tag -n1 -l | grep "^stag-one-line" >actual &&
 	git diff expect actual &&
 	git-tag -n -l | grep "^stag-one-line" >actual &&
 	git diff expect actual &&
-	git-tag -n 1 -l stag-one-line >actual &&
+	git-tag -n1 -l stag-one-line >actual &&
 	git diff expect actual &&
-	git-tag -n 2 -l stag-one-line >actual &&
+	git-tag -n2 -l stag-one-line >actual &&
 	git diff expect actual &&
-	git-tag -n 999 -l stag-one-line >actual &&
+	git-tag -n999 -l stag-one-line >actual &&
 	git diff expect actual
 '
 
@@ -927,21 +927,21 @@
 	echo "stag-zero-lines" >expect &&
 	git-tag -l | grep "^stag-zero-lines" >actual &&
 	git diff expect actual &&
-	git-tag -n 0 -l | grep "^stag-zero-lines" >actual &&
+	git-tag -n0 -l | grep "^stag-zero-lines" >actual &&
 	git diff expect actual &&
-	git-tag -n 0 -l stag-zero-lines >actual &&
+	git-tag -n0 -l stag-zero-lines >actual &&
 	git diff expect actual &&
 
 	echo "stag-zero-lines " >expect &&
-	git-tag -n 1 -l | grep "^stag-zero-lines" >actual &&
+	git-tag -n1 -l | grep "^stag-zero-lines" >actual &&
 	git diff expect actual &&
 	git-tag -n -l | grep "^stag-zero-lines" >actual &&
 	git diff expect actual &&
-	git-tag -n 1 -l stag-zero-lines >actual &&
+	git-tag -n1 -l stag-zero-lines >actual &&
 	git diff expect actual &&
-	git-tag -n 2 -l stag-zero-lines >actual &&
+	git-tag -n2 -l stag-zero-lines >actual &&
 	git diff expect actual &&
-	git-tag -n 999 -l stag-zero-lines >actual &&
+	git-tag -n999 -l stag-zero-lines >actual &&
 	git diff expect actual
 '
 
@@ -955,37 +955,37 @@
 	echo "stag-lines" >expect &&
 	git-tag -l | grep "^stag-lines" >actual &&
 	git diff expect actual &&
-	git-tag -n 0 -l | grep "^stag-lines" >actual &&
+	git-tag -n0 -l | grep "^stag-lines" >actual &&
 	git diff expect actual &&
-	git-tag -n 0 -l stag-lines >actual &&
+	git-tag -n0 -l stag-lines >actual &&
 	git diff expect actual &&
 
 	echo "stag-lines      stag line one" >expect &&
-	git-tag -n 1 -l | grep "^stag-lines" >actual &&
+	git-tag -n1 -l | grep "^stag-lines" >actual &&
 	git diff expect actual &&
 	git-tag -n -l | grep "^stag-lines" >actual &&
 	git diff expect actual &&
-	git-tag -n 1 -l stag-lines >actual &&
+	git-tag -n1 -l stag-lines >actual &&
 	git diff expect actual &&
 
 	echo "    stag line two" >>expect &&
-	git-tag -n 2 -l | grep "^ *stag.line" >actual &&
+	git-tag -n2 -l | grep "^ *stag.line" >actual &&
 	git diff expect actual &&
-	git-tag -n 2 -l stag-lines >actual &&
+	git-tag -n2 -l stag-lines >actual &&
 	git diff expect actual &&
 
 	echo "    stag line three" >>expect &&
-	git-tag -n 3 -l | grep "^ *stag.line" >actual &&
+	git-tag -n3 -l | grep "^ *stag.line" >actual &&
 	git diff expect actual &&
-	git-tag -n 3 -l stag-lines >actual &&
+	git-tag -n3 -l stag-lines >actual &&
 	git diff expect actual &&
-	git-tag -n 4 -l | grep "^ *stag.line" >actual &&
+	git-tag -n4 -l | grep "^ *stag.line" >actual &&
 	git diff expect actual &&
-	git-tag -n 4 -l stag-lines >actual &&
+	git-tag -n4 -l stag-lines >actual &&
 	git diff expect actual &&
-	git-tag -n 99 -l | grep "^ *stag.line" >actual &&
+	git-tag -n99 -l | grep "^ *stag.line" >actual &&
 	git diff expect actual &&
-	git-tag -n 99 -l stag-lines >actual &&
+	git-tag -n99 -l stag-lines >actual &&
 	git diff expect actual
 '