[feat] launch kitty window with relative size

[k4lizen]

Is your feature request related to a problem? Please describe.
When running a pwntools script that launches gdb, it can be set to open the output/gdb pane next to each other with tmux like this:

context.terminal = "tmux splitw -h -l 65% -b".split()

This makes it so that the window is split vertically, where the left one is 65% of the width of the unsplit window. This is really convenient for me as changing the width each time manually is tiresome, and I rerun the script quite often. For kitty I have this:

context.terminal = "kitty @ launch --location=vsplit --cwd=current".split()

but as far as I know there is no way to make it so the split is at 65%

Describe the solution you'd like
A cmd argument that allows the split to be at a % location.

Describe alternatives you've considered
I've looked at this but I don't think it solves my problem, or if it does I don't know how.

[kovidgoyal]

There isnt a declarative way to do it, you need to write a 5 line script
to do it for you.

Get the current window size, with
tput lines columns
Then calculate 15% of columns
Then launch with kitten @ launch
Then resize with kitten @ resize-window --increment=calculated value

[k4lizen]

@kovidgoyal
So my updated setup is:
context.terminal = "kitty @ action launch --location=before ~/.config/kitty/pwntools_debug.sh".split()

#!/bin/bash
split_size=$((120 - $(tput cols)))
if [ $split_size -ne 0 ]; then
    kitty @ resize-window --increment=$split_size
fi
"$@"

And that works almost as well, the problem with calculating current size and doing +%15 is that when the pane is split, closed, and reopened - it remembers where it was before. So reruning the command (which happens often), continues pushing it by 15%.
If you know a scriptable solution for this that be great, otherwise there may be merit to reopening the issue.

[kovidgoyal]

If the size of the new window is already 65%, dont resize it.

[k4lizen]

Yes, but the way you outlined it initially doesn't work since the script gets run in the new window, not in the initial window, so tput cols has no sense of what the total size of the (left + right) window is. Anyways, this works (for pwntools):

#!/bin/bash

# set the percentage here
gdb_pct=65

# left is gdb, right is process output
left_columns=$(tput cols)
right_columns=$(kitty @ ls --match neighbor:right | jq '.[0].tabs[0].windows[0].columns')
total_columns=$((right_columns+left_columns))
goal=$((total_columns * gdb_pct / 100))

increment=$((goal-left_columns))
if [ $increment -ne 0 ]; then
    kitty @ resize-window --increment=$increment
fi

"$@"

Which im fairly satisfied with. Also for anyone reading in the future, the if-statement will be redundant once 15dd95d gets released.

[k4lizen]

Thanks!