Re: [docbook] DTD from extended RNC

[Peter Flynn <peter@silmaril.ie>]

On 22/05/18 02:17, N. Raghavendra wrote:
[...]
> I'll probably spend a substantial part of the next several years writing
> in this schema, and I may have to modify it sometimes.  Given that, and
> the fact that it is difficult for me to extend a DTD, I guess I will
> abandon the idea of creating a customised DocBook DTD, and will instead
> write a customised RNC, along the lines that I have posted.

Very good choice.

[...]
> That is Emacs for me.  The choice is then between nXML mode and PSGML
> mode.  Since PSGML needs a DTD, since I have given up on writing a
> customised DTD in favour of an RNC, and since `trang' does not convert
> that RNC to a DTD, 

Probably the RNC used facilities for which there is no direct equivalent
in DTDs. It's more important that you get the model right than that you
use any specific expression of it.

> I have to give up on PSGML mode.  So, I will
> necessarily be using nXML mode.  I am planning to separate out the nXML
> code from the Emacs distribution into a local package, and modify it
> incrementally in an attempt to add a few features.

That would be an interesting task. I look forward to hearing what you find.

///Peter