Thanks for reporting that. I pushed the following change;
does it fix the bug for you?
>From d38c9d2c9c7f0a20308f0982a9f6b3836640942f Mon Sep 17 00:00:00 2001
From: Paul Eggert <egg...@cs.ucla.edu>
Date: Tue, 29 Jan 2013 13:46:48 -0800
Subject: [PATCH] autoscan: port to perl 5.17
* bin/autoscan.in (scan_sh_file): Escape '{'. This avoids a
feature that is deprecated in Perl 5.17. Reported by Ray Lauff in
<http://lists.gnu.org/archive/html/bug-autoconf/2013-01/msg00059.html>.
---
bin/autoscan.in | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/bin/autoscan.in b/bin/autoscan.in
index 993a750..db1df79 100644
--- a/bin/autoscan.in
+++ b/bin/autoscan.in
@@ -358,7 +358,7 @@ sub scan_sh_file ($)
{
# Strip out comments and variable references.
s/#.*//;
- s/\${[^\}]*}//g;
+ s/\$\{[^\}]*}//g;
s/@[^@]*@//g;
# Tokens in the code.
--
1.7.11.7
