[tex-eplain] colored verbatim or how to temporarily escape verbatim mode

[Philip Taylor]

I don't know if it will help, but my "nestable verbatim" code
will allow you to restore catcodes within a verbatim environment :

	http://www.tug.org/TUGboat/tb11-2/tb28taylor.pdf

(See attachment for code)

Philip Taylor
--------
Helmut Jarausch wrote:

> I'd like to set some lines of a program listing in a different colour.
> For this I'd like to invoke \setcolour{1 0 0} from the nice (plain-TeX)
> package 'present.tex'
> see http://www.ctan.org/tex-archive/macros/plain/contrib/present
> 
> But I have difficulties to invoke that macro either within a \verbatim
> group or within
> \listing. I need some trickery to get \setcolour{1 0 0} parsed with
> standard catcodes for blank, { and }.
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