Hi, The greeting-2 test uses the "set - ARGS" idiom which once was thought to be portable. It no longer is:
https://www.gnu.org/savannah-checkouts/gnu/autoconf/manual/autoconf-2.69/html_node/Limitations-of-Builtins.html says "Avoid ‘set -’, e.g., ‘set - $my_list’. Posix no longer requires support for this command, and in traditional shells ‘set - $my_list’ resets the -v and -x options, which makes scripts harder to debug." http://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html says "If the first argument is '-', the results are unspecified." Find attached a patch (tested).
>From cabaa81becf9b6da89c5408b1f05035a5ba39f4a Mon Sep 17 00:00:00 2001 From: Bruno Haible <[email protected]> Date: Wed, 14 Dec 2016 19:23:31 +0100 Subject: [PATCH] Make the greeting-2 test POSIX compliant and traceable through "sh -x". * tests/greeting-2: Don't use the "set - ARGS" idiom. References: https://www.gnu.org/savannah-checkouts/gnu/autoconf/manual/autoconf-2.69/html_node/Limitations-of-Builtins.html http://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html --- tests/greeting-2 | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tests/greeting-2 b/tests/greeting-2 index f7d69e1..ab6b459 100755 --- a/tests/greeting-2 +++ b/tests/greeting-2 @@ -2,7 +2,7 @@ # Test very long --greeting argument, and also show skipping a test. # (And one way to compute full moons.) # -# Copyright (C) 2001, 2006, 2014, 2015 Free Software Foundation, Inc. +# Copyright (C) 2001, 2006, 2014-2016 Free Software Foundation, Inc. # # Copying and distribution of this file, with or without modification, # are permitted in any medium without royalty provided the copyright @@ -16,7 +16,7 @@ Wuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu EOF # Werewolves cry at full moon only. -set - `TZ=GMT date +"%Y %j %H %M %S"` +set x `TZ=GMT date +"%Y %j %H %M %S"`; shift year=$1; day=$2; hours=$3; minutes=$4; seconds=$5 years_since_2000=`expr $year - 2000` days_since_2000=`expr '(' $years_since_2000 '*' 365 ')' + '(' '(' $years_since_2000 - 1 ')' / 4 ')' + $day` -- 2.6.4
