From: Russell Steicke <russellsteicke@gmail.com>
Date: Sun, 3 Aug 2008 14:14:01 +0000 (+0800)
Subject: Check for pre-commit hook existence.
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ian/git?a=commitdiff_plain;h=30c34d664cbd6d27272728b3619425ea3ef8744d;p=topgit.git

Check for pre-commit hook existence.

Running tg in a repo without an active pre-commit hook fails
saying

  grep: .git/hooks/pre-commit: No such file or directory
  cat: .git/hooks/pre-commit: No such file or directory

Even "tg help" does this!  So add extra checks for existence
of the pre-commit hook.
---

diff --git a/tg.sh b/tg.sh
index 6896721..c334f70 100644
--- a/tg.sh
+++ b/tg.sh
@@ -21,9 +21,11 @@ die()
 setup_hook()
 {
 	hook_call="\"\$(tg --hooks-path)\"/$1 \"\$@\""
-	if fgrep -q "$hook_call" "$git_dir/hooks/$1"; then
-		# Another job well done!
-		return
+	if [ -x "$git_dir/hooks/$1" ]; then
+		if fgrep -q "$hook_call" "$git_dir/hooks/$1"; then
+			# Another job well done!
+			return
+		fi
 	fi
 	# Prepare incanation
 	if [ -x "$git_dir/hooks/$1" ]; then
@@ -35,7 +37,7 @@ setup_hook()
 	{
 		echo "#!/bin/sh"
 		echo "$hook_call"
-		cat "$git_dir/hooks/$1"
+		[ -x "$git_dir/hooks/$1" ] && cat "$git_dir/hooks/$1"
 	} >"$git_dir/hooks/$1+"
 	chmod a+x "$git_dir/hooks/$1+"
 	mv "$git_dir/hooks/$1+" "$git_dir/hooks/$1"