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strsplit on comma, with a trailing comma in input

Dan Kelley 
I have a comma-separated data file in which trailing commas sometimes occur. 
I am using strsplit to extract the data from this file, and it seems great
except in cases with trailing comma characters.

The example below illustrates.  What I'd like is to get a fourth element in
the answer, being an empty string just like the second element.  Is there a
way I can express my patter (or perhaps specify perl or extended) to get
that?
[1] "a" ""  "b"

Thread (5 messages)

Dan Kelley strsplit on comma, with a trailing comma in input Dec 3 Benilton Carvalho strsplit on comma, with a trailing comma in input Dec 3 Gabor Grothendieck strsplit on comma, with a trailing comma in input Dec 3 Peter Dalgaard strsplit on comma, with a trailing comma in input Dec 3 Dan Kelley strsplit on comma, with a trailing comma in input Dec 3