[R] separate commands by semicolon

William Dunlap wdunlap at tibco.com
Thu Sep 15 21:28:05 CEST 2016


The most reliable way to split such lines is with parse(text=x).
Regular expressions don't do well with context-free grammars.

Bill Dunlap
TIBCO Software
wdunlap tibco.com

On Thu, Sep 15, 2016 at 12:08 PM, Adrian Dușa <dusa.adrian at unibuc.ro> wrote:

> Dear R-helpers,
>
> When parsing a text, I would like to separate commands written on the same
> line, by a semicolon.
> Something like:
>
> x <- "foo <- '3;4'; bar <- \"don't ; use semicolons\""
>
> Ideally, that would translate to these two commands in a character vector
> of length 2:
> foo <- '3;4'
> bar <- "don't ; use semicolons"
>
> It's probably a regexp magic, but I just can't find it.
>
> Any hint is highly appreciated,
> Adrian
>
> --
> Adrian Dusa
> University of Bucharest
> Romanian Social Data Archive
> Soseaua Panduri nr.90
> 050663 Bucharest sector 5
> Romania
>
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