[Pyparsing] expression not greedy enough

[Diez B. R. <de...@we...>]

Hi,

I'm in the process of writing a CSS-parser - and encountered a behavior that I 
don't understand.

The attached file shows it - I expect the expression

0 100px

to be parsed as two tokens, a NUMBER and an LENGTH.

But instead, it seems to be parsed as NUMBER, NUMBER, IDENT.

The second test-case shows that if there is only one sub-expression, things 
work as expected.

Any suggestions?

Diez