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...p editors. Still, I think there is benefit from checking quickly that 'editor' exists at run-time in file.edit() -- the current failure mode is unusual (a shell error & R warning). Offering an R error would also benefit, e.g., users with a typo in their custom EDITOR setting: $ EDITOR=eamcs R > file.edit(tempfile()) # /bin/sh: line 1: eamcs: command not found # Warning message: # error in running command Where I come up short is knowing the platform-robust way to implement this -- nzchar(Sys.which(editor)) looks like it will work fine on Unix, but I don't know what to do about...

Dear R developers, it seems that I am in the mood of filing bug reports. Partly because R-1.0 is approaching fast, partly to explain why I have send (yet) another empty bug report. My settings are as follows: > options()$mailer [1] "mailx" > options()$method NULL > options()$editor [1] "emacsclient" My first attempt to send the last bug-report about "R CMD