[Rd] clients and carriage returns
mail at joeconway.com
Wed Jun 20 18:57:48 CEST 2007
I've recently ported PL/R (R embedded in Postgres as a procedural
language) to work on Win32 -- thank you to all involved for making the
embedded interface common between *nix and Win32!
This of course means users are now creating PL/R functions using Win32
based editors, which are using \r\n for EOL. I had not realized this
before, but R throws a parse error when it sees \r, even on a Win32 OS.
Near as I can tell browsing R source, this is true on all operating
systems -- e.g. gram.y seems to look only for \n, and in
src/gnuwin32/graphapp/events.c:handle_char(), \r is actively replaced
with \n. I didn't find any specific mention of EOL/newline in "Writing R
Extensions", and only reference to related escape sequences in "R
- Is it safe (and indeed proper) for PL/R to always convert \r\n to
\n prior to invoking the R parser?
- Should the same be done for \r to \n (e.g. on OS X)?
- Any other considerations I should care for?
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