viewvcs: match 8000-byte lookup for git

No need to scan the entire string, but prefer to match git
behavior.  This might be faster if/when Perl can create
substrings efficiently using CoW.

Fix a 80-column violation while we're at it.

1 files changed, 3 insertions, 3 deletions

diff --git a/lib/PublicInbox/ViewVCS.pm b/lib/PublicInbox/ViewVCS.pm
index b41adc44..962dc66b 100644
--- a/lib/PublicInbox/ViewVCS.pm
+++ b/lib/PublicInbox/ViewVCS.pm
@@ -135,14 +135,14 @@ sub solve_result {
                 return html_page($ctx, 500, \$log);
         }
 
-        my $binary = index($$blob, "\0") >= 0;
+        my $bin = index(substr($$blob, 0, $BIN_DETECT), "\0") >= 0;
         if (defined $fn) {
                 my $h = [ 'Content-Length', $size, 'Content-Type' ];
-                push(@$h, ($binary ? 'application/octet-stream' : 'text/plain'));
+                push(@$h, ($bin ? 'application/octet-stream' : 'text/plain'));
                 return delete($ctx->{-wcb})->([200, $h, [ $$blob ]]);
         }
 
-        if ($binary) {
+        if ($bin) {
                 $log = "<pre>$oid $type $size bytes (binary)" .
                         " $raw_link</pre>" . $log;
                 return html_page($ctx, 200, \$log);