[TopGit PATCH] tg.sh: Check for read permissions of help files

[Bert Wesarg <bert.wesarg@googlemail.com>]

We currently check only for '-f' but we need to have read permissions as well.

And help files don't need the execution bit set.

Signed-off-by: Bert Wesarg <bert.wesarg@googlemail.com>

---
 Makefile |    2 +-
 tg.sh    |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index 238d07d..f9dbe6e 100644
--- a/Makefile
+++ b/Makefile
@@ -35,7 +35,7 @@ install:: all
 	install -d -m 755 "$(hooksdir)"
 	install $(hooks_out) "$(hooksdir)"
 	install -d -m 755 "$(sharedir)"
-	install $(help_out) "$(sharedir)"
+	install -m 644 $(help_out) "$(sharedir)"
 
 clean::
 	rm -f tg $(commands_out) $(hooks_out) $(help_out)
diff --git a/tg.sh b/tg.sh
index 03a392b..edac006 100644
--- a/tg.sh
+++ b/tg.sh
@@ -154,7 +154,7 @@ do_help()
 	if [ -z "$1" ] ; then
 		echo "TopGit v0.1 - A different patch queue manager"
 		echo "Usage: tg (create|delete|info|patch|summary|update|help) ..."
-	elif [ -f "@sharedir@/tg-$1.txt" ] ; then
+	elif [ -f "@sharedir@/tg-$1.txt" -a -r "@sharedir@/tg-$1.txt" ] ; then
 		cat "@sharedir@/tg-$1.txt"
 	else
 		echo "`basename $0`: no help for $1" 1>&2
-- 
tg: (e311d15..) t/check-read-permissions-of-help-files (depends on: master)