slackbuilds_ponce/games/wolf4sdl/exename.diff

diff -Naur Wolf4SDL-1.7-src/wl_main.cpp Wolf4SDL-1.7-src.patched/wl_main.cpp
--- Wolf4SDL-1.7-src/wl_main.cpp	2011-05-15 23:11:34.000000000 -0400
+++ Wolf4SDL-1.7-src.patched/wl_main.cpp	2014-09-05 12:06:24.000000000 -0400
@@ -1678,6 +1678,10 @@
     bool hasError = false, showHelp = false;
     bool sampleRateGiven = false, audioBufferGiven = false;
     int defaultSampleRate = param_samplerate;
+	 char *exename = argv[0], *p;
+
+	 for (p = argv[0]; *p; p++)
+		 if (*p == '/') exename = p + 1;
 
     for(int i = 1; i < argc; i++)
     {
@@ -1884,7 +1888,7 @@
             "Wolf4SDL v1.7 ($Revision: 256 $)\n"
             "Ported by Chaos-Software (http://www.chaos-software.de.vu)\n"
             "Original Wolfenstein 3D by id Software\n\n"
-            "Usage: Wolf4SDL [options]\n"
+            "Usage: %s [options]\n"
             "Options:\n"
             " --help                 This help page\n"
             " --tedlevel <level>     Starts the game in the given level\n"
@@ -1923,7 +1927,7 @@
             "                        (default: 0 -> .sod, 1-3 -> .sd*)\n"
             " --goodtimes            Disable copy protection quiz\n"
 #endif
-            , defaultSampleRate
+            , exename, defaultSampleRate
         );
         exit(1);
     }