On Wed, Dec 3, 2008 at 5:00 PM, Hans Hagen wrote:
> Mojca Miklavec wrote:
>
>> Is there any special reason why the old code doesn't work on mkiv?
>> I have found one possible explanation, though I'm not sure about that:
>>
>> This works:
>>
>> picture a; a := \sometxt{rotated};
>> gp_put_text((1cm, 1cm), angle(30), a);
>>
>> but this doesn't:
>>
>> gp_put_text((1cm, 1cm), angle(30), \sometxt{rotated});
>>
>> What does metapost see in mkiv when one puts \sometxt there? Maybe
>> that explains the problem.
>
> \long\def\sometxt#1#{\dosometxt{#1}} % grab optional [args]
>
> \long\def\dosometxt#1#2%
> {textext.drt("\ifcsname @@st@@#1\endcsname\csname
> @@st@@#1\endcsname{#2}\else#2\fi")}
>
>
> so, it sees textext.drt("somestring")
Thanks a lot!
I have found a workaround in that case. I can redefine textext to
catch it, revert the weird changes done earlier and finally call the
original function:
vardef [EMAIL PROTECTED](expr txt) =
let,=@; % this line is needed to annulate earlier hacks
thetextext(rawtextext(txt),origin)
enddef ;
I don't clam that this is a nice thing to do, but it's still better
than non-functional code.
Another option would be (in the language of TeX, but probably possible
to translate to metapost):
\let\originaltextext=\textext
\def\textext#1{\sometrickeryreversal\originaltextext{#1}}
Thanks again,
Mojca
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