Hi Folks, Can someone satisfy my curiosity (well, at least about the following query!)
Reading the draft proofs of an article I've been asked to look through, I find the typesetter has set what would normally be entered as source("xyz.R") or source('xyz.R') as source(`xyz.R') i.e. it has come out with an opening backquote, then xyz.R, then a closing forward quote. I suspect the intervention of "intelligent" software (à la Word's "clever quotes"). Well, the cure is clear and I'm not asking about that. But I got curious about what role the backquote might play in R syntax (if any). As a start I tried typing that in as it stands: source(`xyz.R') ## and then you get the "continuation +" as if it were ## incomplete, so I tried a closing parenthesis: + ) Error: unprotect_ptr: pointer not found So it wasn't a mere syntax error (which would have caused an error message saying just that) -- using the backquote caused R to try to do something. So now I'm wondering what the effect of "`" is, in R. Statutory Declaration: I have performed an R Site Search for "backquote" obtaining 9 hits none of which seems to address this question. Best wishes to all, Ted. -------------------------------------------------------------------- E-Mail: (Ted Harding) <[EMAIL PROTECTED]> Fax-to-email: +44 (0)870 094 0861 Date: 07-Aug-06 Time: 10:25:31 ------------------------------ XFMail ------------------------------ ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.