Re: Bug: long strings with REALLY long delimiters…

[dyngeccetor8 <dyngeccetor8@...>]

On 12/14/18 7:32 PM, Roberto Ierusalimschy wrote:
>> Finding longest "=" sequence is arguably simplest and not optimal. I prefer
>> finding shortest long closing quote: min(N): ("]" "=" ^ N "]") not in string.
>>
>> This algorithm have no worst cases.
>>
>> Sample implementation at
>> https://github.com/martin-eden/workshop/blob/master/formats/lua/quote_string/intact.lua#L16
> 
> It doesn't seem to work for "]]a]=". (Result is "[=[]]a]=]=]"...)
> 
> -- Roberto

Thank you for pointing at this case!

I fixed algorithm by concatenating "]" to source string before determining
variable number of "=" required.

So now "]]a]=" transformed to "]]a]=]" and ("[==[", "]==]") are used as proper
quotes.

Sadly, link now points to current version. Link to original (bugged) version is

https://github.com/martin-eden/workshop/blob/39322444d84e7d93c6f73e563a4e78989a85f195/formats/lua/quote_string/intact.lua

-- Martin