From 5a6775be4fdbee0523a573af960568ca21f38c49 Mon Sep 17 00:00:00 2001
From: Russ Allbery <rra@stanford.edu>
Date: Fri, 7 Dec 2007 00:26:24 +0000
Subject: Allow the empty string in wallet-backend arguments.

When writing to a file in the wallet client program, remove an old
backup file before creating a new backup and don't fail if the backup
already exists.
---
 server/wallet-backend | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'server')

diff --git a/server/wallet-backend b/server/wallet-backend
index c2be5e7..4af7490 100755
--- a/server/wallet-backend
+++ b/server/wallet-backend
@@ -120,7 +120,7 @@ sub check_args {
     my %exclude = map { $_ => 1 } @$exclude;
     for (my $i = 1; $i <= @args; $i++) {
         next if $exclude{$i};
-        unless ($args[$i - 1] =~ m,^[\w_/.-]+\z,) {
+        unless ($args[$i - 1] =~ m,^[\w_/.-]*\z,) {
             error "invalid characters in argument: $args[$i - 1]";
         }
     }
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