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make(1): document use of magic values in CondDoEmpty

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rillig 2020-09-03 17:16:01 +00:00
parent 4dd5292c3e
commit ecb4f44224
1 changed files with 5 additions and 4 deletions
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9
usr.bin/make/cond.c
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@ -1,4 +1,4 @@
/* $NetBSD: cond.c,v 1.108 2020/09/03 16:14:58 rillig Exp $ */
/* $NetBSD: cond.c,v 1.109 2020/09/03 17:16:01 rillig Exp $ */
/*
* Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
@ -70,14 +70,14 @@
*/
#ifndef MAKE_NATIVE
static char rcsid[] = "$NetBSD: cond.c,v 1.108 2020/09/03 16:14:58 rillig Exp $";
static char rcsid[] = "$NetBSD: cond.c,v 1.109 2020/09/03 17:16:01 rillig Exp $";
#else
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)cond.c 8.2 (Berkeley) 1/2/94";
#else
__RCSID("$NetBSD: cond.c,v 1.108 2020/09/03 16:14:58 rillig Exp $");
__RCSID("$NetBSD: cond.c,v 1.109 2020/09/03 17:16:01 rillig Exp $");
#endif
#endif /* not lint */
#endif
@ -719,6 +719,7 @@ get_mpt_arg(Boolean doEval, const char **linePtr, char **argPtr,
static Boolean
CondDoEmpty(int arglen, const char *arg MAKE_ATTR_UNUSED)
{
/* Magic values ahead, see get_mpt_arg. */
return arglen == 1;
}
@ -1232,7 +1233,7 @@ Cond_Eval(const char *line)
}
}
/* And evaluate the conditional expresssion */
/* And evaluate the conditional expression */
if (Cond_EvalExpression(ifp, line, &value, 1, TRUE) == COND_INVALID) {
/* Syntax error in conditional, error message already output. */
/* Skip everything to matching .endif */