nath bug

nath bug

[David Munger]

Hello Giuseppe,

I think I found a bug in the nath module. Try the following:

\usemodule[nath]
\starttext
\[ e^{f(x)} \]
\stoptext

And by the way, fractions in exponents are typeset too big:

\usemodule[nath]
\starttext
\[ e^{\frac{1}{\gamma-1}} \]
\stoptext


Best regards,

David

Re: nath bug

[Giuseppe Bilotta]

Friday, December 3, 2004 David Munger wrote:

> Hello Giuseppe,

> I think I found a bug in the nath module. Try the following:

> \usemodule[nath]
> \starttext
> \[ e^{f(x)} \]
> \stoptext

> And by the way, fractions in exponents are typeset too big:

> \usemodule[nath]
> \starttext
> \[ e^{\frac{1}{\gamma-1}} \]
> \stoptext

I just hit the same bug working on my PhD thesis :)

Basically, the fix that I implemented to solve the problem with
^^ not working to access arbitrary characters when nath was
active causes this bug. A possible solution (as a quick hack
because for the moment I can't look for a better solution) is
to put

\appendtoks
\livesupsub@
\to\everymath

in t-nath.tex after the definition of livesupsub@ and
killsupsub@

Maybe Hans has some suggestion for a better solution: the
problem is that the mathcode is ignored for characters with
code 7 or 8 (sup- or subscript). So I'm currently changing the
catcode of ^ and _ when entering mathmode.

Ideas?

-- 
Giuseppe "Oblomov" Bilotta

Re: nath bug

[David Munger]

Giuseppe Bilotta wrote :

> \appendtoks
> \livesupsub@
> \to\everymath
> 
> in t-nath.tex after the definition of livesupsub@ and
> killsupsub@

Hmm... It seemed to work at first, but it just moved the problem. Now
it's (\sum) limits that are typeset like in inline style.

> Maybe Hans has some suggestion for a better solution: the
> problem is that the mathcode is ignored for characters with
> code 7 or 8 (sup- or subscript). So I'm currently changing the
> catcode of ^ and _ when entering mathmode.

I hope he has!


Regards,

David

Re: nath bug

[Hans Hagen]

David Munger wrote:

>>Maybe Hans has some suggestion for a better solution: the
>>problem is that the mathcode is ignored for characters with
>>code 7 or 8 (sup- or subscript). So I'm currently changing the
>>catcode of ^ and _ when entering mathmode.
>  
> I hope he has!

wel, then make me a zip with

(1) the nath module you use
(2) some samples that fail
(3) an explanation of the problem

and i'll have a look

Hans


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