Merge pull request #281 from polluks/sp65

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

doc/sp65.sgml

@@ -49,6 +49,7 @@ Short options:
 
 Long options:
   --convert-to fmt[,attrlist]   Convert into target format
+  --dump-palette                Dump palette as table
   --help                        Help (this text)
   --list-conversions            List all possible conversions
   --pop                         Restore the original loaded image
@@ -76,6 +77,12 @@ attribute lists see <ref id="attr-lists" name="below">.
   see section <ref id="conversions" name="Conversions">.
 
 
+  <label id="option--dump-palette">
+  <tag><tt>--dump-palette</tt></tag>
+
+  Dump palette as table.
+
+
   <label id="option--help">
   <tag><tt>-h, --help</tt></tag>
 

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);