Test line breaks in PERL5DB
$ PERL5DB='sub DB::DB{} die' perl5.18.1 -dle 'print "ok"'
Died.
$ PERL5DB='sub DB::DB{}
die' perl5.18.1 -dle 'print "ok"'
ok
So everything after the line break is ignored.
In bleadperl:
$ PERL5DB='sub DB::DB{} die' ./perl -dle 'print "ok"'
Died.
$ PERL5DB='sub DB::DB{}
die' ./perl -dle 'print "ok"'
Died at -e line 1.
Now the whole environment variable is used. This was probably changed
by commit 2179133.
Let’s call it a bug fix and test it.
(The ‘at -e line 1’ is not right, but the next commit will fix it.)