I’d like to change some input to modify used font but only in parts of it, for example to implement having first line with different font. So basically if I have text with macros etc…:

\WORD{i}eu \Note[]{}{Ebrieux \LeftDot 11.a.}crea au commencement le ciel et la terre. Et la terre

estoit \Note[]{*}{{\Hebreu\Tav\He\Vav} c'est a dire/ vaine/ qui ne proffite et ne sert a rien.}indisposee et \Note[]{*}{{\Hebreu\Bet\He\Vav} non remplie & ornee/ de plantes et d'animaux.}vuyde/ et les tenebres estoient sus les abysmes/ et \Note[]{*}{Selon les Ebrieux/ ou esperit: car {\Hebreu\Dalet\Vav\Het} signifie vent & esperit.}le vent \Note[]{*}{ou/ vehement car {\Hebreu\Alef\Lamed\Resh\He\Yod\Memfinal} se prent aucunesfois pour hault/ excellent/ & puissant.}de Dieu se demenoit par dessus les eaues.

I’d like to typeset the beginning of that using a different font BigFont (but letting lua code to determine the position of closing brace). Ie :

{\BigFont \WORD{i}eu \Note[]{}{Ebrieux \LeftDot 11.a.}crea au commencement le ciel et la terre.} Et la terre

estoit \Note[]{*}{{\Hebreu\Tav\He\Vav} c'est a dire/ vaine/ qui ne proffite et ne sert a rien.}indisposee et \Note[]{*}{{\Hebreu\Bet\He\Vav} non remplie & ornee/ de plantes et d'animaux.}vuyde/ et les tenebres estoient sus les abysmes/ et \Note[]{*}{Selon les Ebrieux/ ou esperit: car {\Hebreu\Dalet\Vav\Het} signifie vent & esperit.}le vent \Note[]{*}{ou/ vehement car {\Hebreu\Alef\Lamed\Resh\He\Yod\Memfinal} se prent aucunesfois pour hault/ excellent/ & puissant.}de Dieu se demenoit par dessus les eaues.

To do this I’d need to extract the macros etc… « Worst » case scenario I’ll write a simple adhoc lpeg grammar to parse input, but was wondering if such grammar existed already in context lua code, or elsewhere.

Thanks

De : Hans Hagen
Envoyé le :mercredi 28 novembre 2018 09:04
À : Joseph Canedo; mailing list for ConTeXt users
Objet :Re: [NTG-context] Grammar to parse TeX input?

On 11/27/2018 11:00 PM, Joseph Canedo wrote:

> I’ve tried context.processbuffer but I am afraid it’s not what I am

> after, most probably I have not phrased clearly my question.

>

> What I am looking for is roughly what’s described in Taco’s presentation

> https://meeting.contextgarden.net/2014/talks/2014-09-12-taco-luatex/luatextalk.pdf

>

> A way to decompose some input into tokens which represent either normal

> text, csnames etc…  I had a try to this token library in LuaTeX but I

> could not find examples of how to use it. I suspect that buffers

> mechanism use it somehow.

you can pick up stuff from the input so in principle you can start your

input with a token scanner, but then you not only end up with lots of

'tokens' but also need to interpret them ... and that is actually what

tex is quite effecient in and good at, so the question is: what do you

want to achieve ... there might be better ways

Hans

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