[Pyparsing] [Fwd: 1. .suppress() does not work; 2. a new API call suggestion]

[Victor P. <po...@na...>]

Probably it is a bug in pyparsing, but most probably is my
misunderstanding.

Note that it uses modified pyparsing with new method .addCondition()
(attached).

When I run my script (attached):

$ ./DuplicateRefs.py chap-filt.lyx

it produces output like:

['name "chap-filt"']

In my opinion, it should instead produce

['chap-filt']

because I use .suppress() in my code.

Sorry, that I package the data in a separate file, not in a string, but
the real example file is long.

What is wrong? How to make it to produce only label name (like 'chap
-filt'), not like ['name "chap-filt"']?

Additional issue:

Because of peculiarity of the syntax of the .lyx file (attached) I
analyze, I first split it into tokens and then parse the tokens
themselves (with another parser). See for example:

LabelNameLineParser = \
    pyparsing.Keyword("name").suppress() + pyparsing.White("
").suppress() + \
        pyparsing.Literal('"').suppress() + pyparsing.CharsNotIn('"') +
pyparsing.Literal('"').suppress()

LabelNameLine = Line.copy().addCondition(lambda self, loc, toks:
LabelNameLineParser.parseString(toks[0], True))

Maybe, we should introduce a shorter API for tasks like this? (I am
unsure whether this situation is often enough to deserve a special
API.) What is your opinion? What if I will write a patch which does
this? will you use it?

-- 
Victor Porton - http://portonvictor.org