extend and fix the errexit tests:

* Debian pdksh fails #3 (trap) and #6 (BSD make)
* AT&T ksh93 passes all
* zsh does not pass them literally, but the actual functionality
  checked is right there
* dash fails #3 (trap) and does not pass #6 due to missing [[
* GNU bash 2 (MirPorts) and 3 (Debian) fails #6 (BSD make)
* oksh-current passes all

check.t

@@ -1,4 +1,4 @@
-# $MirOS: src/bin/mksh/check.t,v 1.262 2009/03/21 11:09:35 tg Exp $
+# $MirOS: src/bin/mksh/check.t,v 1.263 2009/03/22 15:47:23 tg Exp $
 # $OpenBSD: bksl-nl.t,v 1.2 2001/01/28 23:04:56 niklas Exp $
 # $OpenBSD: history.t,v 1.5 2001/01/28 23:04:56 niklas Exp $
 # $OpenBSD: read.t,v 1.3 2003/03/10 03:48:16 david Exp $
@@ -4227,7 +4227,7 @@ expected-stderr:
 ---
 name: errexit-2
 description:
-	Check some "exit on error" edge conditions needed for make(1)
+	Check some "exit on error" edge conditions (POSIXly)
 stdin:
 	set -ex
 	if /usr/bin/env true; then
@@ -4235,10 +4235,11 @@ stdin:
 	fi
 	echo END
 expected-stdout:
+	END
 expected-stderr:
 	+ /usr/bin/env true
 	+ /usr/bin/env false
-expected-exit: e != 0
+	+ echo END
 ---
 name: errexit-3
 description:
@@ -4257,6 +4258,61 @@ expected-stdout:
 	EXIT
 expected-exit: e != 0
 ---
+name: errexit-4
+description:
+	"set -e" test suite (POSIX)
+stdin:
+	set -e
+	echo pre
+	if true ; then
+		false && echo foo
+	fi
+	echo bar
+expected-stdout:
+	pre
+	bar
+---
+name: errexit-5
+description:
+	"set -e" test suite (POSIX)
+stdin:
+	set -e
+	foo() {
+		while [ "$1" ]; do
+			for E in $x; do
+				[ "$1" = "$E" ] && { shift ; continue 2 ; }
+			done
+			x="$x $1"
+			shift
+		done
+		echo $x
+	}
+	echo pre
+	foo a b b c
+	echo post
+expected-stdout:
+	pre
+	a b c
+	post
+---
+name: errexit-6
+description:
+	"set -e" test suite (BSD make)
+category: os:mirbsd
+stdin:
+	mkdir zd zd/a zd/b
+	printf 'all:\n\t@echo eins\n\t@exit 42\n' >zd/a/Makefile
+	printf 'all:\n\t@echo zwei\n' >zd/b/Makefile
+	wd=$(pwd)
+	set -e
+	for entry in a b; do (  set -e;  if [[ -d $wd/zd/$entry.i386 ]]; then  _newdir_="$entry.i386";  else  _newdir_="$entry";  fi;  if [[ -z $_THISDIR_ ]]; then  _nextdir_="$_newdir_";  else  _nextdir_="$_THISDIR_/$_newdir_";  fi;  _makefile_spec_=;  [[ ! -f $wd/zd/$_newdir_/Makefile.bsd-wrapper ]]  || _makefile_spec_="-f Makefile.bsd-wrapper";  subskipdir=;  for skipdir in ; do  subentry=${skipdir#$entry};  if [[ $subentry != $skipdir ]]; then  if [[ -z $subentry ]]; then  echo "($_nextdir_ skipped)";  break;  fi;  subskipdir="$subskipdir ${subentry#/}";  fi;  done;  if [[ -z $skipdir || -n $subentry ]]; then  echo "===> $_nextdir_";  cd $wd/zd/$_newdir_;  make SKIPDIR="$subskipdir" $_makefile_spec_  _THISDIR_="$_nextdir_"   all;  fi;  ) done 2>&1 | sed "s!$wd!WD!g"
+expected-stdout:
+	===> a
+	eins
+	*** Error code 42
+	
+	Stop in WD/zd/a (line 2 of Makefile).
+---
 name: test-stlt-1
 description:
 	Check that test also can handle string1 < string2 etc.