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Added an option `-h' which gives you usage info.

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(According to the original man page, giving `-' by itself as the argument
is supposed to do this, but it seems that it never worked that way.)
This commit is contained in:
Masafumi Max NAKANE 1997-02-15 06:12:07 +00:00
parent a60c8a80bc
commit 21bef06373
2 changed files with 18 additions and 10 deletions
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3
games/backgammon/backgammon/backgammon.6
View File

@ -65,6 +65,9 @@ consist of:
.PP
.na
.TP 8
.B -h
Get a description of possible arguments and exit
.TP 8
.B -n
don't ask for rules or instructions
.TP 8

25
games/backgammon/common_source/subs.c
View File

@ -48,15 +48,15 @@ static char plwhite[] = "Player is white, computer is red.";
static char nocomp[] = "(No computer play.)";
char *descr[] = {
"Usage: backgammon [-] [n r w b pr pw pb t3a]\n",
"\t-\tgets this list\n\tn\tdon't ask for rules or instructions",
"\tr\tplayer is red (implies n)\n\tw\tplayer is white (implies n)",
"\tb\ttwo players, red and white (implies n)",
"\tpr\tprint the board before red's turn",
"\tpw\tprint the board before white's turn",
"\tpb\tprint the board before both player's turn",
"\tterm\tterminal is a term",
"\tsfile\trecover saved game from file",
"Usage: backgammon [-h n r w b pr pw pb tterm sfile]\n",
"\t-h\tgets this list\n\t-n\tdon't ask for rules or instructions",
"\t-r\tplayer is red (implies -n)\n\t-w\tplayer is white (implies -n)",
"\t-b\ttwo players, red and white (implies -n)",
"\t-pr\tprint the board before red's turn",
"\t-pw\tprint the board before white's turn",
"\t-pb\tprint the board before both player's turn",
"\t-tterm\tterminal is a term",
"\t-sfile\trecover saved game from file",
0
};
@ -308,11 +308,12 @@ register char **argv;
register char ch;
extern int optind;
extern char *optarg;
int i;
/* process arguments here. dashes are ignored, nbrw are ignored
if the game is being recovered */
while ((ch = getopt (argc, argv, "nbrwp:t:s:")) != -1) {
while ((ch = getopt (argc, argv, "nbrwp:t:s:h")) != -1) {
switch (ch) {
/* don't ask if rules or instructions needed */
@ -372,6 +373,10 @@ register char **argv;
/* recover file */
recover (optarg);
break;
case 'h':
for (i = 0; descr[i] != 0; i++)
puts (descr[i]);
getout();
}
}
argc -= optind;