[PATCH] cvsserver: fix legacy cvs client and branch rev issues

[Dirk Koopman <djk@tobit.co.uk>]

Early cvs clients don't cause state->{args} to be initialised,
so force this to occur.
Some revision checking code assumes that revisions will be
recognisably numeric to perl, Branches are not, because they
have more decimal points (eg 1.2.3.4 instead of just 1.2).
---
 git-cvsserver.perl |   17 +++++++++++------
 1 files changed, 11 insertions(+), 6 deletions(-)

diff --git a/git-cvsserver.perl b/git-cvsserver.perl
index 5cbf27e..0a4b75e 100755
--- a/git-cvsserver.perl
+++ b/git-cvsserver.perl
@@ -1813,11 +1813,14 @@ sub req_annotate
 # the second is $state->{files} which is everything after it.
 sub argsplit
 {
+    $state->{args} = [];        # need this here because later code depends on it
+                                # and for some reason earlier versions of CVS don't
+                                # satisfy the next condition on plain 'cvs update'
+
     return unless( defined($state->{arguments}) and ref $state->{arguments} eq "ARRAY" );
 
     my $type = shift;
 
-    $state->{args} = [];
     $state->{files} = [];
     $state->{opt} = {};
 
@@ -1906,11 +1909,13 @@ sub argsfromdir
 
     # push added files
     foreach my $file (keys %{$state->{entries}}) {
-	if ( exists $state->{entries}{$file}{revision} &&
-		$state->{entries}{$file}{revision} == 0 )
-	{
-	    push @gethead, { name => $file, filehash => 'added' };
-	}
+        # remember that revisions could be on branches 1.2.3.4[.5.6..]
+        # not just a recogisable "numeric" 1.2
+        if ( exists $state->{entries}{$file}{revision} &&
+             !$state->{entries}{$file}{revision} )
+        {
+            push @gethead, { name => $file, filehash => 'added' };
+        }
     }
 
     if ( scalar(@{$state->{args}}) == 1 )
-- 
1.5.2.1