[src/trunk]: src/external/historical/nawk/bin awk.1: revert changes to exampl...

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

details:   https://anonhg.NetBSD.org/src/rev/eb047ec19bb0
branches:  trunk
changeset: 368307:eb047ec19bb0
user:      rillig <rillig%NetBSD.org@localhost>
date:      Mon Jul 04 18:07:41 2022 +0000

description:
awk.1: revert changes to example 'echo' program

I had removed the exit statement in the strong belief that POSIX had
specified that an AWK program consisting of only a BEGIN block would
implicitly exit after the BEGIN block.  This assumption was wrong.
There are several implementations that implement this special case
though.

https://mail-index.netbsd.org/source-changes-d/2022/07/03/msg013718.html

diffstat:

 external/historical/nawk/bin/awk.1 |  13 ++++++-------
 1 files changed, 6 insertions(+), 7 deletions(-)

diffs (34 lines):

diff -r 2cf2cd1d36c3 -r eb047ec19bb0 external/historical/nawk/bin/awk.1
--- a/external/historical/nawk/bin/awk.1        Mon Jul 04 15:09:12 2022 +0000
+++ b/external/historical/nawk/bin/awk.1        Mon Jul 04 18:07:41 2022 +0000
@@ -1,4 +1,4 @@
-.\"    $NetBSD: awk.1,v 1.9 2022/07/03 10:56:22 rillig Exp $
+.\"    $NetBSD: awk.1,v 1.10 2022/07/04 18:07:41 rillig Exp $
 .\"
 .\" Copyright (C) Lucent Technologies 1997
 .\" All Rights Reserved
@@ -22,7 +22,7 @@
 .\" ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
 .\" THIS SOFTWARE.
 .\"
-.Dd July 3, 2022
+.Dd December 19, 2019
 .Dt AWK 1
 .Os
 .Sh NAME
@@ -711,11 +711,10 @@
 .Pp
 Simulate echo(1):
 .Bd -literal -offset indent
-BEGIN {
-       if (1 < ARGC) printf "%s", ARGV[1]
-       for (i = 2; i < ARGC; i++) printf " %s", ARGV[i]
-       printf "\en"
-}
+BEGIN { # Simulate echo(1)
+        for (i = 1; i < ARGC; i++) printf "%s ", ARGV[i]
+        printf "\en"
+        exit }
 .Ed
 .Pp
 Print an error message to standard error: