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[src/trunk]: src/usr.bin/make make(1): clean up documentation for Var_Subst
details: https://anonhg.NetBSD.org/src/rev/f8ddd1c5262b
branches: trunk
changeset: 942079:f8ddd1c5262b
user: rillig <rillig%NetBSD.org@localhost>
date: Thu Nov 05 18:20:23 2020 +0000
description:
make(1): clean up documentation for Var_Subst
diffstat:
usr.bin/make/var.c | 19 ++++++++-----------
1 files changed, 8 insertions(+), 11 deletions(-)
diffs (45 lines):
diff -r bd91ad404dc1 -r f8ddd1c5262b usr.bin/make/var.c
--- a/usr.bin/make/var.c Thu Nov 05 18:08:39 2020 +0000
+++ b/usr.bin/make/var.c Thu Nov 05 18:20:23 2020 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: var.c,v 1.659 2020/11/05 17:27:16 rillig Exp $ */
+/* $NetBSD: var.c,v 1.660 2020/11/05 18:20:23 rillig Exp $ */
/*
* Copyright (c) 1988, 1989, 1990, 1993
@@ -130,7 +130,7 @@
#include "metachar.h"
/* "@(#)var.c 8.3 (Berkeley) 3/19/94" */
-MAKE_RCSID("$NetBSD: var.c,v 1.659 2020/11/05 17:27:16 rillig Exp $");
+MAKE_RCSID("$NetBSD: var.c,v 1.660 2020/11/05 18:20:23 rillig Exp $");
#define VAR_DEBUG1(fmt, arg1) DEBUG1(VAR, fmt, arg1)
#define VAR_DEBUG2(fmt, arg1, arg2) DEBUG2(VAR, fmt, arg1, arg2)
@@ -3935,20 +3935,17 @@
return VPR_UNKNOWN;
}
-/* Substitute for all variables in the given string in the given context.
- *
- * If eflags & VARE_WANTRES, any effects from the modifiers, such as ::=,
- * :sh or !cmd! take place.
+/* Expand all variable expressions like $V, ${VAR}, $(VAR:Modifiers) in the
+ * given string.
*
* Input:
- * str the string which to substitute
- * ctxt the context wherein to find variables
+ * str The string in which the variable expressions are
+ * expanded.
+ * ctxt The context in which to start searching for
+ * variables. The other contexts are searched as well.
* eflags VARE_UNDEFERR if undefineds are an error
* VARE_WANTRES if we actually want the result
* VARE_ASSIGN if we are in a := assignment
- *
- * Results:
- * The resulting string.
*/
VarParseResult
Var_Subst(const char *str, GNode *ctxt, VarEvalFlags eflags, char **out_res)
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