[Pyparsing] Newline-Sensitive Languages

[Eric D. <eri...@gm...>]

What is the best way to create a newline-sensitive language (like Python 
itself)? I continually run into problems where the newlines are eaten by 
the automated whitespace-grabber, and I've found what I believe to be 
two working solutions:

- Attach .setWhitespaceChars(' \t') to the end of all of the low-level 
  parsers so that, when combined, they don't gobble up newlines.
- Add White(' \t') between all low-level parsers, such that they eat 
  non-newline whitespace but not the newlines.

Neither one of these is particularly elegant. It would be nice if 
.setWhitespaceChars propagated down to children (like .ignore does), but 
I don't expect it to be changed anytime soon because it would break 
backwards compatibility pretty bad for anyone who was using either one 
of these methods of producing newline-dependent languages.

Which of these two is preferable? Or, alternatively, is there an even 
better way that I haven't thought of yet?

Thanks in advance!