[Rd] question about R_ParseVector function

From: Ev Whin <whinev_at_gmail.com>
Date: Tue, 29 May 2007 16:34:12 +0800

Hi r-devel,

The R_ParseVector has been changed in R-2.5.0, and there is a simple description about the 4th argument at
http://stat.ethz.ch/R-manual/R-patched/NEWS, it says that: "R_ParseVector() has a new 4th argument 'SEXP srcfile' allowing source references to be attached to the returned expression list. " I do not quite understand the purpose of adding the 4th argument. Would some experts explain this function in details? Thank you very much!

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