[PATCH] scripts: allow empty commit messages abort the commit

[Pádraig Brady]

I'm not committing this as it contradicts a comment
in the script, but I think something like this is
needed to allow one to abort a commit normally.

I've gone hunting for my vim process to kill
a couple of times now.

cheers,
Pádraig.

commit bdd5930b87071bcda32f92d3c8798d0e1a91f966
Author: Pádraig Brady <address@hidden>
Date:   Thu Jan 26 00:55:55 2012 +0000

    scripts: allow empty commit messages abort the commit

    * scripts/git-hooks/commit-msg: Validate empty commit
    messages, so that git will abort the commit as normal.

diff --git a/scripts/git-hooks/commit-msg b/scripts/git-hooks/commit-msg
index e1bb382..4a0a6b9 100755
--- a/scripts/git-hooks/commit-msg
+++ b/scripts/git-hooks/commit-msg
@@ -95,13 +95,13 @@ sub check_msg($$)
   # with lines that start with "#" in the log.

   # Filter out leading blank and comment lines.
-  # while (@line && $line[0] =~ /^(?:#.*|[ \t]*)$/) { shift @line; }
+  while (@line && $line[0] =~ /^(?:#.*|[ \t]*)$/) { shift @line; }

   # Filter out blank and comment lines at EOF.
-  # while (@line && $line[$#line] =~ /^(?:#.*|[ \t]*)$/) { pop @line; }
+  while (@line && $line[$#line] =~ /^(?:#.*|[ \t]*)$/) { pop @line; }

   @line == 0
-    and return 'no log message';
+    and return '';  # let git abort

   my $bad = bad_first_line $line[0];
   $bad