python ParseError reported location should calculate special character such as '\t'

[jamesruan]

Line 3: expected [A-Za-z0-9], "\t"
                ifindex 3
           ^

because there's 2 '\t' before ifindex, the actual location of error is somewhere later.

[jcoglan]

Could you give an example grammar and input that produces this error?

[jamesruan]

Try to parse error on lines with "\t". You may construct such a case faster than me.

[jcoglan]

Sorry, I was asking for an example so I can make sure I've understood the problem you're seeing, because I was unsure from reading your initial report. For example, I don't know where the parser error is actually happening.

[jamesruan]

oh, the error in my example should be pointed like this

Line 3: expected [A-Za-z0-9], "\t"
                ifindex 3
                       ^

expecting a "\t", but met a " ".

[jcoglan]

Thanks for explaining that. But I was mentioning that as one example of how, without an explicit example from you, I'm going to be guessing at the cause and solution to this problem.

The quickest way to make sure I can reproduce your problem would be if you put a grammar and input file on gist.github.com that cause this error, then I can begin to debug it.

[jamesruan]

Sorry for that I would not provide such an example.

Because this library falls short of my expectations, I've already abandoned using it. Provide an example need extra time that I'm short of.

This issue raised simply try to make this a better one, even I'm not using it. Maybe somebody using it also found this issue will provide one.

[jcoglan]

I'm closing this since @jamesruan has moved on from using this package.