[ESS] Debug mode puts point in the wrong buffer
Marius Hofert
marius.hofert at math.ethz.ch
Thu Jun 20 21:14:50 CEST 2013
On Thu, Jun 20, 2013 at 10:33 AM, Vitalie Spinu <spinuvit at gmail.com> wrote:
> >> Marius Hofert <marius.hofert at math.ethz.ch>
> >> on Wed, 19 Jun 2013 23:55:10 +0200 wrote:
>
> [...]
>
>
> > 1) ... M-C and means M-S-c (although this can never be clear since the
> > keys on a keybard are already shown as uppercase letters whereas they
> > are lowercase if not pressed with shift... but okay). Why not write
> > M-S-c? at least it's then clear that M-C does *not* mean 'meta +
> > control'.
>
> > 2) ... C-M-S-c for 'cont-multi' ... here, the 'Shift' is denoted by
> > 'S', probably to avoid the confusion with C-M-C, where the first 'C'
> > is 'Control' and the second 'C'.
>
> The keys are generated automatically. This is how emacs writes them. By
> convention C always precedes M, so M-C cannot mean Alt+Control, which
> are meaningless anyways.
>
> > Okay, I now got it to work, but only because I put the point back in
> > the *R* buffer... that's exactly the behavior I don't understand. Why
> > do I always have to switch in the other buffer (back go *R*) first
> > before I can enter debug commands (be it either RET or M-N [indeed,
> > RET is even simpler in this case :-)]).
>
> It should work from the R script buffer. Unless that script buffer is
> not associated with the process. It looks like a bug to me.
>
> Can you try the following. Create a new test.R and put the following
> into it:
>
>
> foo <- function(){
> browser()
> 1 + 2
> }
>
>
> foo()
>
> Evaluate the function with C-c C-c. Then foo(). Do you see visual
> debugger jumping and highlighting the line 1+2?
>
yes! *that* example works as you said.
However, when I use...
require(simsalapar)
debug(varlist)
varlist(a)
... to debug the function 'varlist' in our package 'simsalapar' (not
out yet...), I receive "M-N is undefined'.
To make it more reproducible, I tried...
require(copula)
debug(rCopula)
rCopula(100, copula=normalCopula(0.5))
... based on our (already published package 'copula'). But there it
works as expected ... hmmm.... not sure what triggers that bug (but
Martin and I run into it quite often)
Note: I also updated to the latest ESS version and the behavior is
exactly the same.
Cheers,
Marius
>
>
> Now M-N (from test.R) should advance the debugger to exit.
>
> Vitalie
>
--
ETH Zurich
Dr. Marius Hofert
RiskLab, Department of Mathematics
HG E 65.2
Rämistrasse 101
8092 Zurich
Switzerland
Phone +41 44 632 2423
http://www.math.ethz.ch/~hofertj
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