[ESS] Folding chunks in Sweave?

[Stephen Eglen]

 > So this should be hacked to work with Sweave chunks. However I am a bit 
 > sceptic about "enough markup". There surely is enough for the start i.e.
 > <<someRegExp>>=, but the end is only @. And this character also appears 
 > in R code.

Would a suitable regexp on the closing markup be something like
^@$  i.e. @ is at start of line, and only thing on line? That would
be fairly unlikely to appear otherwise in an R script.  Or even
something like 

^\s-*@\s-*$

where "\s-*" allows optional whitespace.

Stephen



 > 
 > Can any lisp master handle this?
 > 
 > Gregor
 > 
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