macOS pipe `none` command seems to freeze kitty

[hanoii]

I don't use this very often, but I needed it now and it froze kitty.

I have this in config:

map f1 pipe @text none /usr/local/bin/subl
scrollback_pager_history_size 50

Now when I run f1, the editor opens with the output but kitty freezes and become unresponsive, I have to force quit it.

On the other hand, using tab instead of none works.

[kovidgoyal]

When you pass data to an external program kitty waits until all data is
read. It does so on the main thread. Presumably whatever program you are
passing the data to is not reading all of it.

[hanoii]

That didn't happen on on 0.13.x, started to happen just recently.

Also, isn't none supposed to be background? it freezes with the loading clock, completely unresponsive. tab works.

[kovidgoyal]

No, the process is background, passing data to it is not, and never has
been. So if you use pipe with none without any data, it will never hang,
with data, it will hang till the process reads all the data.

[hanoii]

Right..

echo "aa" | subl also never ends until I close the editor tab.. which just found out it also unfreezes kitty.

The data is all read, but I guess sublime is leaving stdin open. This must be something new, this was working ok before with the same editor.

Ok, I can work around this. Thanks :)!