[R] Getting 2 kinds of quotes inside a pasted string

Dirk Eddelbuettel edd at debian.org
Fri Sep 12 04:37:36 CEST 2003

On Thu, Sep 11, 2003 at 10:12:56PM -0400, Wiener, Matthew wrote:
> My problem is that I keep getting the quotes escaped in the string that
> comes out, and that sets the field separator to something different.
> What I'd like to end up with is something like: 
> 	awk 'BEGIN{FS=";"}'  
> If I can get this, I can put the rest of the awk program together.  What I
> actually keep getting is 
> awk 'BEGIN{FS=\";\"}'.  
> That is, the quote characters are escaped.

This prints what you want:

	> print("awk \'BEGIN\{FS=\";\"\}\'")
	[1] "awk 'BEGIN{FS=\";\"}'"
and I can pipe it into tee(1) which logs to its first argument:

	> con<-pipe("tee /tmp/matt.log","w")
	> cat("awk \'BEGIN\{FS=\";\"\}\'\n", file=con)
	> awk 'BEGIN{FS=";"}'		     	     # this line echoes by tee
						     # pressed RETURN
	> close(con)

and it all looks fine:

	edd at chibud:~> cat /tmp/matt.log 
	awk 'BEGIN{FS=";"}'
	edd at chibud:~> 

Hth, Dirk

Those are my principles, and if you don't like them... well, I have others.
                                                -- Groucho Marx

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