OMeta: pattern-matching language

I'm a tad surprised I hadn't already blogged this, but OMeta is a language for expressing pattern matches. It can be embedded in Python as PyMeta. Interestingly, PyMeta includes a parser for TermL (about which see next post).

Pattern-matching a la OMeta/XSLT/what have you is definitely going to be one of the modes supported by Decl, but I still don't really grok it. So ... OMeta. For study and illumination.