I found Regexp::Debugger quite illustrative when trying to find why a regular expression does not match.

As you don't show any data for your regular expression and I don't know how Thai is written, I can't conveniently replicate your problem or find why your regexp behaves with your data in a way that you don't want.

Maybe you can post relevant data (it is likely to be 6 characters, maybe post them using charnames instead of literals), or find the solution yourself stepping through the matching by using Regexp::Debugger.

In reply to Re^5: Repeated code blocks in long and hairy regex by Corion
in thread Repeated code blocks in long and hairy regex by Polyglot

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