[R] Smart detection of wrap width?

Paul Paul.Domaskis at gmail.com
Mon Apr 20 16:55:08 CEST 2015

Paul Domaskis <paul.domaskis <at> gmail.com> writes:
> Yes, I found the width option in the help pages, but I was wondering
> if there was automatic setting of the wrapping according to the
> current window width.
> Your function works exactly as I wished.  I'll probably get smarter
> with time (I hope) but would it be reasonably good practice to stick
> this into ~/.Rprofile?  I don't suppose there is a way to have it
> automatically invoked when the window size/positition changes?
> (It's still priceless even without automatic triggering).

Ista Zahn <istazahn <at> gmail.com> writes:
> For ESS see
> https://github.com/gaborcsardi/dot-emacs/blob/master/.emacs

Thanks, Ista....I'm...err....I'm a vim user <<cowers>>....

Peter Crowther <peter.crowther <at> melandra.com> writes:
> Possibly, though it would take a little building.  If you were to
> launch R directly when you start the xterm (loosely xterm R rather
> than the default) then R would receive a SIGWINCH signal whenever
> the xterm window size changes (xterm automatically sends this to its
> child process).  R doesn't directly enable handling of the signal,
> but there's nothing to stop you loading a dynamic library with a
> little C code that set up a handler for SIGWINCH and, when it got
> one, ran the equivalent of the stty command to get the new width.
> The thing I've not been able to figure out is how the C code would
> ever then hand that to R asynchronously.  Anyone?

MacQueen, Don <macqueen1 <at> llnl.gov> writes:
> At this point, and since we are in an X windows context, I think it
> might be easier to use the window manager's features and write a
> little macro or something that will send my setwid() command to the
> active window, then assign it to a simple keystroke. Then:  resize
> the window; hit the keystroke, and you're done. True, it's not fully
> automatic, but it would be pretty quick and easy.
> Either that or give ESS a try, using the bit that Ista offered. Or
> maybe Rstudio?
> Peter's got a good start, but I too would be stymied at the last
> step; definitely beyond my skill.

Peter, Don,

Considering that I've been using Matlab, VBA, and Access for the last
decade, I think that venturing down this path might take quite some
time.  I appreciate the ideas, and if I'm ever in the zone with
programming under the hood with X-windows (which I use), I'll refer
back.  Thanks.

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