<- and
<<-< code=""> get typeset by one symbol each.
For a corresponding TeX preamble combining Sweave and listings ,
we provide command SweaveListingPreparations.
As for the Rlanguage definition, we allow for different keywordstyles
to typeset symbols from different packages. This is useful to distinguish
mark-up for newly defined functions and alread existing ones.
More specifically, whenever in some Rcode sniplet in some Sweave chunk, there
is some library or require command, the corresponding symbols
found by ls() afterwords in some search() entry position, are
registered as ]{ },%
sensitive=true,%
keywordstyle=[],%
}
TeX directive in the automatically generated .tex file
where .alreadyDefinedPkgs in the package
name space) at each instance of
a library or require command.
To this end commands
library and
require are masked. See also
lstsetLanguage,
changeKeywordstyles,
and setToBeDefinedPkgs
As for the integration of code sniplets from an url (by default, we use
the svn server at R-forge in its most recent version), this can be
useful to stay consistent with the current version of the code without
having to update vignettes all the time. To this end, besides referencing
by line numbers, lstinputSourceFromRForge also offers
referencing by matching regular expressions.