[PATCH 1/3] new: clean up the group name input code

["Darrick J. Wong" <djwong@kernel.org>]

From: Darrick J. Wong <djwong@kernel.org>

Clean up the code that reads group names in from the command line to
take advantage of the read command's ability to display a prompt.  While
we're at it, we should abort the script if the group list encounters
EOF, and we can tighten up some of the other sh-isms too.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
---
 new |   13 +++++--------
 1 file changed, 5 insertions(+), 8 deletions(-)


diff --git a/new b/new
index 6b7dc5d4..ea7cf25e 100755
--- a/new
+++ b/new
@@ -91,16 +91,13 @@ group_names() {
 	}' doc/group-names.txt
 }
 
-if [ $# -eq 0 ]
-then
-
+if [ $# -eq 0 ]; then
+	prompt="Add to group(s) [other] (separate by space, ? for list): "
     while true
     do
-	echo -n "Add to group(s) [other] (separate by space, ? for list): "
-	read ans
-	[ -z "$ans" ] && ans=other
-	if [ "X$ans" = "X?" ]
-	then
+	read -p "${prompt}" ans || exit 1
+	test -z "${ans}" && ans=other
+	if [ "${ans}" = "?" ]; then
 	    echo $(group_names)
 	else
 	    # only allow lower cases, spaces, digits and underscore in group