Merge pull request #281 from polluks/sp65

sp65: A forgotten option. Empty arguments are not silent anymore.

src/sp65/main.c

@@ -92,6 +92,7 @@ static void Usage (void)
             "\n"
             "Long options:\n"
             "  --convert-to fmt[,attrlist]\tConvert into target format\n"
+            "  --dump-palette\t\tDump palette as table\n"
             "  --help\t\t\tHelp (this text)\n"
             "  --list-conversions\t\tList all possible conversions\n"
             "  --pop\t\t\t\tRestore the original loaded image\n"
@@ -273,7 +274,7 @@ static void OptSlice (const char* Opt attribute ((unused)), const char* Arg)
 
 static void OptVerbose (const char* Opt attribute ((unused)),
                         const char* Arg attribute ((unused)))
-/* Increase versbosity */
+/* Increase verbosity */
 {
     ++Verbosity;
 }
@@ -397,6 +398,11 @@ int main (int argc, char* argv [])
         ++I;
     }
 
+    /* Do we have an input file? */
+    if (I == 1) {
+        Error ("No input file");
+    }
+
     /* Cleanup data */
     SetWorkBitmap (C);
     FreeBitmap (B);