Re: [Nasm-devel] Replace %00 with %: ?

[Cyrill G. <gor...@gm...>]

On Sat, Oct 02, 2010 at 02:34:16PM -0400, p1...@ja... wrote:
> 
> On 10/2/2010 12:23 PM, Cyrill Gorcunov wrote:
> > On Sat, Oct 02, 2010 at 10:41:35AM -0500, Keith Kanios wrote:
> >>   Does anyone agree with
> >> http://sourceforge.net/tracker/index.php?func=detail&aid=809197&group_id=6208&atid=356208
> >> in turning %00 into %: ?
> >>
> > Seems reasonable to me. The question is how many use-cases it will
> > break. I mean -- backward compatibility. Would this hurt users much?
> >
> >    Cyrill
> >
> 
> Referencing the previous tracker issue,
> another use of this syntax also applies to the following
> judiciously modified/simplified snippet:
> 
>          %push
> 
>          %assign %$arg 8
> 
>          %macro local 0
>              %xdefine %[%:] ebp-%[%$arg]
>              %assign %$arg %$arg+8
>          %endmacro
> 
>          _main:
> 
>          .myvar local  ; results in _main.myvar defined as ebp-8
>          mov rax, [.myvar]
> 
>          %pop
> 
> I personally prefer the %: syntax as it is slightly less confusing than %00.
> However, bear in mind that previous snippet is modifying the local label
> for it's own use and that this behavior should continue being supported
> following any syntax change.
> 

Hi Rob,

I agree that %00 is somewhat confusing (never used it myself actually ;)
but I worry about programs which _already_ use old-fashioned and known
%00. So if we drop it how many people/projects start complaining?

  Cyrill