Emacs freezes for a moment when assigning a multidimensional array

[sjkobayashi]

With julia-snail-popup-display-eval-results set to :command, using julia-snail-send-line on a line assigning a multidimensional array makes Emacs unresponsive for some period.

For example,

test = zero(100, 100, 100)

freezes Emacs for 3 seconds, and

test = zeros(10, 10, 10, 10)

freezes Emacs for about 1 minute.

This issue doesn't happen when julia-snail-popup-display-eval-results is set to :change.

[gcv]

Thank you for the bug report. The problem probably has something to do with the subtleties of async evaluation and serializing data between Julia and Emacs. I reproduced it and will have to spend some time looking into it.

[gcv]

Turns out that the popup.el library Snail uses internally has one slow internal function, popup-replace-displayable. I just pushed a workaround to Snail which makes everything faster (0e6fa51). It should be in MELPA in a couple of hours. I also opened a PR to fix popup.el performance upstream (auto-complete/popup-el#135).

Thanks again for the bug report, and apologies for the delay in dealing with this problem. Please let me know if the change works for you.

[sjkobayashi]

Very interesting to know that this issue came from popup.el. The fix works like a charm. Thank you!