Hi,

quoting from the commit message:
 This patch makes zutils behave like grep(1) in that the default for
 grep_show_name is false when one file is being searched and true when multiple
 files are being searched. Of course, -h and -H overwrite the default.

Find the patch attached.

-- 
Best regards,
Michael
Description: Don’t print file name if only one file is grepped
 This patch makes zutils behave like grep(1) in that the default for
 grep_show_name is false when one file is being searched and true when multiple
 files are being searched. Of course, -h and -H overwrite the default.
Author: Michael Stapelberg <stapelb...@debian.org>
Bug-Debian: http://bugs.debian.org/694024
Forwarded: 
Last-Update: 2012-12-04

--- zutils-0.9.orig/main.cc
+++ zutils-0.9/main.cc
@@ -245,6 +245,7 @@ int main( const int argc, const char * c
   int argind = 0;
   bool grep_list = false;
   bool grep_show_name = true;
+  bool grep_show_name_default = true;
   bool grep_pattern_found = false;
   for( ; argind < parser.arguments(); ++argind )
     {
@@ -302,8 +303,8 @@ int main( const int argc, const char * c
           case 'f': grep_args.push_back( "-f" ); grep_args.push_back( arg );
                     grep_pattern_found = true; break;
           case 'F': grep_args.push_back( "-F" ); break;
-          case 'h': grep_show_name = false; break;
-          case 'H': grep_show_name = true; break;
+          case 'h': grep_show_name = false; grep_show_name_default = false; break;
+          case 'H': grep_show_name = true; grep_show_name_default = false; break;
           case 'i': grep_args.push_back( "-i" ); break;
           case 'I': grep_args.push_back( "-I" ); break;
           case 'l': grep_args.push_back( "-l" ); grep_list = true; break;
@@ -350,6 +351,11 @@ int main( const int argc, const char * c
 
   if( filenames.empty() ) filenames.push_back("-");
 
+  if( grep_show_name_default && filenames.size() == 1 )
+    {
+    grep_show_name = false;
+    }
+
   int retval = ( ( program_mode == m_zgrep ) ? 1 : 0 );
   while( !filenames.empty() )
     {
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