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> On 8 Nov 2019, at 10:55, Sean Conner <> wrote:
> It was thus said that the Great Chris Smith once stated:
>> On 6 Nov 2019, at 19:05, Roberto Ierusalimschy <> wrote:
>>> For all these reasons, it seems very unlikely that Lua will ever
>>> change to a copying collector. Maybe it is time to change the manual
>>> and make official this behavior?
>> I would certainly like to see this made official.  However, it does raise
>> some other interesting points and questions:
>> - Strings are immutable in Lua, but not in C.  C code can directly modify
>> a Lua string 
>  Only by casting away the const modifier.  Also, you can't change the size
> of the string (or bad things might happen).  But sure, yeah, C can do that.

I was going to continue my argument here, but having played around a bit I’ve changed my opinion.  This has too many unintended consequences to be safe.

>> - Is there any real difference between Userdata and String objects?  Are
>> Strings simply Userdata whose content is cached and on which string
>> functions can be called?
>> - Do we need both types?  Would it be useful to be able to convert between
>> Userdata and String objects?  That is, to explicitly uncache/duplicate a
>> String object or to mark Userdata as containing String data?
>  There was a long thread about this back in 2014:

Good grief.  I don’t think anyone wants a repeat of that, so I’ll leave this well alone save to echo the sentiment that it would be nice to be able to tell Lua that ’this Userdata is a string buffer, so please let me use string functions on it’.

Chris Smith <>