[R-SIG-Mac] Very long wait opening certain *.R files, Mac R 2.5.0

[Douglas Bates]

On 6/28/07, Matthew Keller <mckellercran at gmail.com> wrote:
> Hi all,
>
> I'm a recent convert, still trying to get used to this new OS. I use R
> everyday for my work.
>
> I have a new Intel MacBook Pro, and installed R 2.5.0. Using the GUI,
> when I try to open a large *.R script (from File -> Open or by double
> clicking the file), it takes about 1-2 minutes to open. The script is
> about 3000 lines long and there are very long and nested loops in it.
> Files that are shorter open increasingly quickly, so this behavior
> seems to be a function of script length. Still, it takes a text editor
> less than a second to open the 3000 lines long file.
>
> Does anyone have any ideas on what might be causing this? Does the Mac
> version of R run some kind of code automatically when script files are
> opened? Thanks in advance...

Perhaps Simon inserted code in the GUI to cause the delay, as a subtle
hint that 3000 line R scripts with very long and nested loops are to
be discouraged.  :-)