[src/trunk]: src/usr.bin/make make(1): fix documentation of Var_Subst, clean ...

[rillig <rillig%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/d22085198127
branches:  trunk
changeset: 1011602:d22085198127
user:      rillig <rillig%NetBSD.org@localhost>
date:      Sat Jul 04 10:46:31 2020 +0000

description:
make(1): fix documentation of Var_Subst, clean up other documentation

diffstat:

 usr.bin/make/var.c |  46 +++++++++-------------------------------------
 1 files changed, 9 insertions(+), 37 deletions(-)

diffs (129 lines):

diff -r 5e23d7716ac4 -r d22085198127 usr.bin/make/var.c
--- a/usr.bin/make/var.c        Sat Jul 04 10:35:30 2020 +0000
+++ b/usr.bin/make/var.c        Sat Jul 04 10:46:31 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: var.c,v 1.249 2020/07/04 10:35:30 rillig Exp $ */
+/*     $NetBSD: var.c,v 1.250 2020/07/04 10:46:31 rillig Exp $ */
 
 /*
  * Copyright (c) 1988, 1989, 1990, 1993
@@ -69,14 +69,14 @@
  */
 
 #ifndef MAKE_NATIVE
-static char rcsid[] = "$NetBSD: var.c,v 1.249 2020/07/04 10:35:30 rillig Exp $";
+static char rcsid[] = "$NetBSD: var.c,v 1.250 2020/07/04 10:46:31 rillig Exp $";
 #else
 #include <sys/cdefs.h>
 #ifndef lint
 #if 0
 static char sccsid[] = "@(#)var.c      8.3 (Berkeley) 3/19/94";
 #else
-__RCSID("$NetBSD: var.c,v 1.249 2020/07/04 10:35:30 rillig Exp $");
+__RCSID("$NetBSD: var.c,v 1.250 2020/07/04 10:46:31 rillig Exp $");
 #endif
 #endif /* not lint */
 #endif
@@ -102,11 +102,9 @@
  *     Var_Value           Return the value of a variable in a context or
  *                         NULL if the variable is undefined.
  *
- *     Var_Subst           Substitute named variable, or all variables if
- *                         NULL in a string using
- *                         the given context as the top-most one. If the
- *                         third argument is non-zero, Parse_Error is
- *                         called if any variables are undefined.
+ *     Var_Subst           Substitute either a single variable or all
+ *                         variables in a string, using the given context as
+ *                         the top-most one.
  *
  *     Var_Parse           Parse a variable expansion from a string and
  *                         return the result and the number of characters
@@ -469,9 +467,6 @@
  *     val             value to set it to
  *     ctxt            context in which to set it
  *
- * Results:
- *     None
- *
  * Side Effects:
  *     The new variable is placed at the front of the given context
  *     The name and val arguments are duplicated so they may
@@ -506,9 +501,6 @@
  * Var_Delete --
  *     Remove a variable from a context.
  *
- * Results:
- *     None.
- *
  * Side Effects:
  *     The Var structure is removed and freed.
  *
@@ -960,9 +952,6 @@
  *     val             value to give to the variable
  *     ctxt            context in which to set it
  *
- * Results:
- *     None.
- *
  * Side Effects:
  *     If the variable doesn't yet exist, a new record is created for it.
  *     Else the old value is freed and the new one stuck in its place
@@ -995,9 +984,6 @@
  *     val             String to append to it
  *     ctxt            Context in which this should occur
  *
- * Results:
- *     None
- *
  * Side Effects:
  *     If the variable doesn't exist, it is created. Else the strings
  *     are concatenated (with a space in between).
@@ -1432,9 +1418,6 @@
  * VarREError --
  *     Print the error caused by a regcomp or regexec call.
  *
- * Results:
- *     None.
- *
  * Side Effects:
  *     An error gets printed.
  *
@@ -3921,7 +3904,7 @@
 /*-
  *-----------------------------------------------------------------------
  * Var_Subst  --
- *     Substitute for all variables in the given string in the given context
+ *     Substitute for all variables in the given string in the given context.
  *     If flags & VARF_UNDEFERR, Parse_Error will be called when an undefined
  *     variable is encountered.
  *
@@ -3937,7 +3920,7 @@
  *     The resulting string.
  *
  * Side Effects:
- *     None. The old string must be freed by the caller
+ *     None.
  *-----------------------------------------------------------------------
  */
 char *
@@ -4092,18 +4075,7 @@
     return Buf_DestroyCompact(&buf);
 }
 
-/*-
- *-----------------------------------------------------------------------
- * Var_Init --
- *     Initialize the module
- *
- * Results:
- *     None
- *
- * Side Effects:
- *     The VAR_CMD and VAR_GLOBAL contexts are created
- *-----------------------------------------------------------------------
- */
+/* Initialize the module. */
 void
 Var_Init(void)
 {