Problem with a manual spell

From: Chuck Carson (chuck@EDEN.COM)
Date: 09/20/98 

I am trying to add a knock spell and am having problems
manipulating the argument.

I want the syntax of the spell to be as follows:

cast 'knock' east  (or any of the other 5 dirs)

Thus I am trying to run tests on the argument which
is getting passed to the spell with a leading space.

For some reason, skip_spaces(&arg) is crashing and
also giving me a compile time warning.

Here is the spell:

     65 ASPELL(spell_knock)
     66 {
     67  int x = 0, found = 0;
     68
     69
     70  if (ch == NULL) {
     71    log("SYSERR: spell_knock: NULL *ch passed to function.");
     72    return;
     73   }
     74
     75  if (IN_ROOM(ch) == NOWHERE) {
     76    sprintf(buf, "SYSERR: spell_knock: %s casting spell in
non-existing room.", GET_NAME(ch));
     77    log(buf);
     78    return;
     79   }
     80
     81
     82   sprintf(buf, "arg=%s\r\n", arg);
     83   send_to_char(buf, ch);                // Here is prints out with a leading
space
     84
     85   for (x = 0; x < NUM_OF_DIRS; x++)
     86     if (!strcmp(arg, dirs[x])) {
     87        found = TRUE;
     88        break;
     89      }
     90
     91   if (!found) {
     92     send_to_char("There is no such exit leading in that
direction.\r\n", ch);
     93     return;
     94    }
     95
     96
     97  send_to_char("We found it!\r\n", ch);
     98
     99 }


I know this spell looks a little funny right now, I am just trying to do
the sanity
checks first, the rest is cake. How can I strip this leading space from
*arg?

Thanks in advance
Chuck


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