(PR#13299) "deparse" with "nlines" argument produces empty elements
Although it does actually do what it is documented to do, producing the minimum necessary number of lines would be better, and I've altered R-patched to do so. Thank you for the report. Brian Ripley (who was in Bialowieza a couple of months ago).
On Tue, 18 Nov 2008, kbarton at zbs.bialowieza.pl wrote:
Full_Name: Kamil Barto? Version: 2.8.0 OS: windows xp Submission from: (NULL) (212.33.92.187) According to the "deparse" function documentation "nlines" is the *maximum* number of lines to produce. But, when "nlines" argument is supplied, it produces exactly nlines of result, and the result contains empty elements at the end. Example:
deparse(quote(foo(1,2,3)), width.cutoff = 20, nlines=7)
[1] "foo(1, 2, 3)" "" "" "" "" "" "" This behavior affects e.g. output of warnings() where "..." is attached to every call rather than only the truncated ones.
warnings()
Warning messages: 1: In plot.window(...) ... : "na.action" is not a graphical parameter
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Brian D. Ripley, ripley at stats.ox.ac.uk Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595