> I do not like the way you build expressions by concatenating strings. Unfortunately this is the only option if you're trying to preserve POSIX shell compatib

> I do not like the way you build expressions by concatenating strings. Unfortunately this is the only option if you're trying to preserve POSIX shell compatibility - arrays are implementation-specific additions to the specifications. I do not like the way Bash has become synonymous with shell, and appreciate people making an effort to make their scripts work across a large variety of different systems.