Re: how to translate lua pattern "(.)and(.)" with lpeg re ?

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Subject: Re: how to translate lua pattern "(.*)and(.*)" with lpeg re ?
From: albertmcchan <albertmcchan@...>
Date: 2018年1月24日 09:38:46 -0500

Here is another re pattern that does NOT use recursive grammar.
It has similar performance as my split version (no lookahead)

Without recursive grammar, backtrack overhead may be smaller.
I optimize it furthur by not directly matching 'and'

pat = re.compile( 
 "((!'and' .)* ...)+ -> drop3 {.*}",
 { drop3 = function(s) return string.sub(s, 1, -4) end }
)

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Re: how to translate lua pattern "(.*)and(.*)" with lpeg re ?

Re: how to translate lua pattern "(.)and(.)" with lpeg re ?