Question about hints kitten: Open code with line number in existing neovim window

[jleweli]

I have a kitty tab with 2 windows: On top Neovim with my code, below a terminal window which runs a server.

What I want to achieve is: In the bottom window hit CTRL + G and select a path:line entry which is being logged. The selected file should be opened in the upper window.

Is this possible, if yes - how?

Bases on the docs
map ctrl+g kitten hints --type=linenum --linenum-action=tab nvim +{line} {path}
, I tried out many things, for example:

map ctrl+g kitten hints --type=linenum --linenum-action=self --program "kitten @ send-text --match neighbor:top 'nvim +{line} {path}\n'"
map ctrl+g kitten hints --type=linenum --linenum-action=self --program "kitten @ send-text --match neighbor:top \"\\e:e +{line} {path}\\r\""

In both cases, what happens is, that the file is being opened on the correct line but in the wrong (bottom) window.

I also tried different matching methods to make sure that I address the correct window. Without mapping I was able to send keys to the upper window and open a file programmatically.
pasting text
kitten @ send-text --match neighbor:top 'this text gets pasted above'
opening a file
kitty @ send-text --match neighbor:top '\e:e /Users/xxx/projects/xxx/server/config/xxx.ts\r11G'

Thank you in advance!

[kovidgoyal]

Use linenum-action=background and have it run a script that uses kitty remote control to do whatever you like with the match result.

[jleweli]

Thank you very much for your quick reply. I was not able to do it exactly as suggested, but I found a solution which worked for me.

The shortcut:
map ctrl+g kitten hints --customize-processing open-in-nvim.py

open-in-nvim.py:

import re

PATH_LINE_REGEX = re.compile(r'(?P<path>(?:/[^:\s]+)+):(?P<line>\d+)')

def mark(text, args, Mark, extra_cli_args, *a):
    for idx, m in enumerate(PATH_LINE_REGEX.finditer(text)):
        start, end = m.span()
        mark_text = text[start:end].replace('\n', '').replace('\0', '')
        yield Mark(idx, start, end, mark_text, m.groupdict())

def handle_result(args, data, target_window_id, boss, extra_cli_args, *a):
    w = boss.window_id_map.get(target_window_id)
    if w is None:
        return

    for match, g in zip(data['match'], data['groupdicts']):
        path = g.get("path")
        line = g.get("line")
        if path and line:
            nvim_cmd = f":e +{line} {path}\r"
            boss.call_remote_control( w, ('send-text', f'--match=neighbor:top', nvim_cmd))
            boss.call_remote_control( w, ('focus-window', '--match=neighbor:top'))

This solution works for my use case (terminal is always in a window below my code editor). These are the only two windows in a kitty tab. Maybe it helps somebody who wants to achieve something similar.

I also tried the suggested linenum-action=background option. I was able to run a shell script. Problem: I was not able to run any kitten command inside this script. Below is my shell script. Maybe you can tell me what I did wrong or point out a more elegant solution.

The shortcut:
map ctrl+g kitten hints --type=linenum --linenum-action=background ~/.config/kitty/open-in-nvim.sh {path} {line}

open-in-nvim.sh:

#!/usr/bin/env zsh
file="$1"
line="$2"

cmd_prefix='\e:e +'
cmd_suffix='\r'

cmd="$cmd_prefix$line $file $cmd_suffix"

{
  # working commands
  echo "$(date '+%Y-%m-%d %H:%M:%S')\n"
  echo file: $file
  echo line: $line "\n"

  # points to /Applications/kitty.app/Contents/MacOS/kitten
  # and not to /usr/local/bin/kitten (my symlink)
  which kitten

  # this and other kittens do not run
  kitten @ ls

  # my PATH when running the shell script is different from my terminals PATH.
  env
} >~/.config/kitty/output.txt