POSIX vs. bashism? ($VAR vs. ${VAR})

Moin! Folgender Kommentar zu ner CVS-Aenderung von mir uebersteig mein Wissen, kann einer der Experten fuer Erleuchtung sorgen? :-) | > -if [ -z "$MSG" ] ; then | > +if [ -z "${MSG}" ] ; then | | This change do not match the commit log. Do you know if this notation | is POSIX compliant? I use "$VAR" instead of "${VAR}" because I | believe the former is POSIX while the latter is a bashism. Do you | know if I am right? Ciao & Danke Max -- Follow the white penguin.