Re: increment shorthand

[Sven Olsen <sven2718@...>]

(Looks like it is possible to replace my original kludge with an even uglier one, fixing the bug.  More specifically, if I keep track of the top of the stack prior to reading the lvalue, I can use it to figure out how many registers to reserve, thus avoiding register overwriting problems when I construct the rvalue.  I have only the fuzziest understanding of why this approach works though.)

On Fri, Sep 7, 2012 at 1:00 PM, Sven Olsen <sven2718@gmail.com> wrote:

Hrm, well, I've found a bug in my own patch, so, maybe porting Ian's code to 5.2 would be a better option.

It's possible to create situations where my register kludge fails, for example:

local t={a="b"}

local r={a={b=2}}

r.a[t.a]+=2

-Sven

On Fri, Sep 7, 2012 at 12:51 PM, Matthew Wild <mwild1@gmail.com> wrote:

On 7 September 2012 20:14, Jeff Smith <spammealot1@live.co.uk> wrote:
> Hi
>
> I found the link eventually, I think this is it
>
> https://github.com/idmillington/lua/tree/mutation-operators

Yep, original post: http://lua-users.org/lists/lua-l/2011-06/msg01223.html

I'm curious about how it disappeared from PowerPatches...

Regards,
Matthew