[Pyparsing] Memory issues with 2.0.6

[Will M. <wil...@gm...>]

Hi,

My app has a fairly complex grammar to parse expressions. Up to 2.0.5 it
was working well. But in 2.0.6 it gets stuck parsing and starts eating
memory until the process is killed by the OS.

I've pinned pyparsing to 2.0.5 for now. I haven't done any debugging yet,
but I was wondering what had changed since 2.0.5 that could trigger this
kind of behaviour? Any known bugs?

Thanks in advance,

Will McGugan