[Cheetahtemplate-discuss] Matching #end tags

[Bob V. Z. <bva...@ir...>]

Here's a patch that attempts to perform matching of #end tags to the
opening tags [if,for,while,def]. The goal of this is that, well, those
of you that have ever forgotten a #end if know what I'm talking about.

This patch was jointly authored with JJ. I was just going to do an
assert(stack_depth == 0) at the end. The ParseErrors are -much- nicer
and we're able to more accurately tell the programmer where things blew
up since we catch the #end def being used as an #end if and go "wow wow
wow, hold on there, cowboy!"

Note that in this implementation def and end def are special cased. They
don't appear to call the indent routines in the same way the for, while
and if do. So we explicitly called addStack and rmStack for them.

-Bob