lua-users home
lua-l archive

[Date Prev][Date Next][Thread Prev][Thread Next] [Date Index] [Thread Index]


> On this page: http://www.inf.puc-rio.br/~roberto/lpeg/re.html
> 
> there is a self-test for the 're' module grammar (near the end). In particular:
> 
>   print(re.match(p, p))   -- a self description must match itself
> 
> However testing with Lua 5.1.5, LPEG 1.0.0 and re 1.44, the test fails (it prints nil).
> 
> After extensive experimentation, it appears that changing the rule:
> 
> 	exp             <- S (alternative / grammar)
> 
> to:
> 
> 	exp 		<- S (grammar / alternative)
> 
> fixes the problem. Does this seem valid? If so, could the web page be updated please?

Many thanks for the report. You are right about the correct grammar.
I will fix the page soon.

-- Roberto