Skip the ASSIGN directive only when real assignment #7
Template::Grammar labels '=>' as an ASSIGN directive.
This is an attempt at addressing RT #118763.
I'm not sure if this is the correct solution, since it was difficult to find documentation on what the
Template::Grammar labels '=>' as an ASSIGN directive. Since the autofilter skips ASSIGN directives, literal hashes get incorrectly skipped. This patch makes the autofilter skip ASSIGN directives only when they use '='.