[Rd] tk + browser() can leave R unresponsive

[Scott Kostyshak]

On Sat, Aug 3, 2013 at 5:56 AM, Scott Kostyshak <skostysh at princeton.edu> wrote:
> I don't know if this is a bug. I can reproduce the following on Ubuntu
> 12.04.2 and 13.04 64-bit with R version 3.0.1 and with r63479. There
> is no difference if R is patched with the fix for PR#15407 or not,
> although without the fix there are more ways to trigger this.
>
> I can reproduce with the following:
>
> 1. Open R in gnome-terminal or xterm
>
> 2. Run 'library(tcltk)'
>
> 3. Run 'trace(tk_select.list, edit = TRUE)'
> and put "browser()" at the beginning of the onOK body (e.g. in Vim run
> <<:g/onOK/put ='browser()'>>). That is, transform
>
>     onOK <- function() {
>         res <- 1L + as.integer(tkcurselection(box))
>         cat("res is: ", res)
>         ans.select_list <<- choices[res]
>         tkgrab.release(dlg)
>         tkdestroy(dlg)
>     }
>
> to:
>
>     onOK <- function() {
>         browser()
>         res <- 1L + as.integer(tkcurselection(box))
>         cat("res is: ", res)
>         ans.select_list <<- choices[res]
>         tkgrab.release(dlg)
>         tkdestroy(dlg)
>     }
>
> 4. Run 'install.packages()'
>
> 5. Double-click on a package
>
> R becomes unresponsive and I have to kill it.
>
>> sessionInfo()
> R Under development (unstable) (2013-08-02 r63479)
> Platform: x86_64-unknown-linux-gnu (64-bit)
>
> locale:
>  [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C
>  [3] LC_TIME=en_US.UTF-8        LC_COLLATE=en_US.UTF-8
>  [5] LC_MONETARY=en_US.UTF-8    LC_MESSAGES=en_US.UTF-8
>  [7] LC_PAPER=en_US.UTF-8       LC_NAME=C
>  [9] LC_ADDRESS=C               LC_TELEPHONE=C
> [11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C
>
> attached base packages:
> [1] stats     graphics  grDevices utils     datasets  methods   base
>
> Scott
>
>
> --
> Scott Kostyshak
> Economics PhD Candidate
> Princeton University

This might be related to PR#14730. I will add this info there unless
someone suggests otherwise.

Scott


--
Scott Kostyshak
Economics PhD Candidate
Princeton University