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fix #4027 - unix command line parsing bug

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'nethack --show' is rejected, which is ok, but the feedback is
'prscore: bad arguments (2)' which is pretty confusing.

Reject any --s unless it's the start of --scores or --showpath[s].
'nethack --show' will be rejected as "Unknown option: --show."
'nethack -show' is still accepted and will report that it can't find
any scores for how as it always has (assuming that there aren't any
score entries for "how" :-).
This commit is contained in:
PatR
2023-11-05 17:16:02 -08:00
parent 9d83152ced
commit 1b04533b35
2 changed files with 16 additions and 5 deletions
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17
sys/unix/unixmain.c
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@@ -1,4 +1,4 @@
/* NetHack 3.7 unixmain.c $NHDT-Date: 1693359574 2023/08/30 01:39:34 $ $NHDT-Branch: keni-crashweb2 $:$NHDT-Revision: 1.117 $ */
/* NetHack 3.7 unixmain.c $NHDT-Date: 1699233290 2023/11/06 01:14:50 $ $NHDT-Branch: NetHack-3.7 $:$NHDT-Revision: 1.118 $ */
/* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
/*-Copyright (c) Robert Patrick Rankin, 2011. */
/* NetHack may be freely redistributed. See license for details. */
@@ -606,7 +606,8 @@ early_options(int *argc_p, char ***argv_p, char **hackdir_p)
/*
* Both *argc_p and *argv_p account for the program name as (*argv_p)[0];
* local argc and argv impicitly discard that (by starting 'ndx' at 1).
* argcheck() doesn't mind, prscore() (via scores_only()) does.
* argcheck() doesn't mind, prscore() (via scores_only()) does (for the
* number of args it gets passed, not for the value of argv[0]).
*/
for (ndx = 1; ndx < *argc_p; ndx += (consumed ? 0 : 1)) {
consumed = 0;
@@ -687,8 +688,16 @@ early_options(int *argc_p, char ***argv_p, char **hackdir_p)
/*NOTREACHED*/
}
/* check for "-s" request to show scores */
if (lopt(arg,
(ArgValDisallowed | ArgNamOneLetter | ArgErrComplain),
if (lopt(arg, ((ArgValDisallowed | ArgErrComplain)
/* only accept one-letter if there is just one
dash; reject "--s" because prscore() via
scores_only() doesn't understand it */
| ((origarg[1] != '-') ? ArgNamOneLetter : 0)),
/* [ought to omit val-disallowed and accept
--scores=foo since -s foo and -sfoo are
allowed, but -s form can take more than one
space-separated argument and --scores=foo
isn't suited for that] */
"-scores", origarg, &argc, &argv)) {
/* at this point, argv[0] contains "-scores" or a leading
substring of it; prscore() (via scores_only()) expects