# [PATCH] git-tag: Fix the main while loop exit condition.

3 messages from 2007-06-28 to 2007-06-30. Participants: Alexandre Vassalotti, Junio C Hamano, Sam Vilain.
Thread: https://gitlist.dev/t/8761

## Alexandre Vassalotti, 2007-06-28 16:56

Subject: [PATCH] git-tag: Fix the main while loop exit condition.
Message-ID: <11830498172717-git-send-email-alexandre@peadrop.com>
URL: https://gitlist.dev/e/11830498172717-git-send-email-alexandre%40peadrop.com

```
This stop git-tag from emitting a "shift: can't shift that many"
error, when listing tags.

Signed-off-by: Alexandre Vassalotti <alexandre@peadrop.com>
---
 git-tag.sh |    8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/git-tag.sh b/git-tag.sh
index c840439..bc0d735 100755
--- a/git-tag.sh
+++ b/git-tag.sh
@@ -14,18 +14,20 @@ username=
 list=
 verify=
 LINES=0
-while case "$#" in 0) break ;; esac
-do
+while [ $# -ne 0 ]; do
     case "$1" in
     -a)
 	annotate=1
+	shift
 	;;
     -s)
 	annotate=1
 	signed=1
+	shift
 	;;
     -f)
 	force=1
+	shift
 	;;
     -n)
         case $2 in
@@ -36,6 +38,7 @@ do
 		[ -z "$LINES" ] && LINES=1 # 1 line is default when -n is used
 		;;
 	esac
+	shift
 	;;
     -l)
 	list=1
@@ -122,7 +125,6 @@ do
 	break
 	;;
     esac
-    shift
 done
 
 [ -n "$list" ] && exit 0
-- 
1.5.2.1.144.gabc40

```

## Junio C Hamano, 2007-06-29 00:01

Subject: Re: [PATCH] git-tag: Fix the main while loop exit condition.
Message-ID: <7vy7i3mxw3.fsf@assigned-by-dhcp.pobox.com>
URL: https://gitlist.dev/e/7vy7i3mxw3.fsf%40assigned-by-dhcp.pobox.com
In-Reply-To: <11830498172717-git-send-email-alexandre@peadrop.com>

```
Thanks.

I think you would need something like this on top if you want to
really fix it, though.

I also suspect that we should error out on:

	$ git tag -l foo bar

but that will be left as an exercise to the readers ;-)

diff --git a/git-tag.sh b/git-tag.sh
index bc0d735..48b54a1 100755
--- a/git-tag.sh
+++ b/git-tag.sh
@@ -14,7 +14,8 @@ username=
 list=
 verify=
 LINES=0
-while [ $# -ne 0 ]; do
+while case "$#" in 0) break ;; esac
+do
     case "$1" in
     -a)
 	annotate=1
@@ -30,8 +31,9 @@ while [ $# -ne 0 ]; do
 	shift
 	;;
     -n)
-        case $2 in
-	-*)	LINES=1 	# no argument
+        case "$#,$2" in
+	1,* | *,-*)
+		LINES=1 	# no argument
 		;;
 	*)	shift
 		LINES=$(expr "$1" : '\([0-9]*\)')
@@ -43,7 +45,14 @@ while [ $# -ne 0 ]; do
     -l)
 	list=1
 	shift
-	PATTERN="$1"	# select tags by shell pattern, not re
+	case $# in
+	0)	PATTERN=
+		;;
+	*)
+		PATTERN="$1"	# select tags by shell pattern, not re
+		shift
+		;;
+	esac
 	git rev-parse --symbolic --tags | sort |
 	    while read TAG
 	    do

```

## Sam Vilain, 2007-06-30 06:04

Subject: Re: [PATCH] git-tag: Fix the main while loop exit condition.
Message-ID: <4685F275.8030508@vilain.net>
URL: https://gitlist.dev/e/4685F275.8030508%40vilain.net
In-Reply-To: <7vy7i3mxw3.fsf@assigned-by-dhcp.pobox.com>

```
Junio C Hamano wrote:
> Thanks.
> 
> I think you would need something like this on top if you want to
> really fix it, though.
> 
> I also suspect that we should error out on:
> 
> 	$ git tag -l foo bar
> 
> but that will be left as an exercise to the readers ;-)

More is required...

diff --git a/git-tag.sh b/git-tag.sh
index 48b54a1..480d16d 100755
--- a/git-tag.sh
+++ b/git-tag.sh
@@ -82,7 +82,9 @@ do
 	if test "$#" = "0"; then
 	    die "error: option -m needs an argument"
 	else
+	    message="$1"
 	    message_given=1
+	    shift
 	fi
 	;;
     -F)
@@ -93,13 +95,19 @@ do
 	else
 	    message="$(cat "$1")"
 	    message_given=1
+	    shift
 	fi
 	;;
     -u)
 	annotate=1
 	signed=1
 	shift
-	username="$1"
+	if test "$#" = "0"; then
+	    die "error: option -u needs an argument"
+	else
+	    username="$1"
+	    shift
+	fi
 	;;
     -d)
 	shift

```