How to skip config.fish lines in file preview terminal (bat)

[andeledea]

In my config.fish I added some fish startup commands (neofetch, fish_greeting...).
When I use ctrl+alt+F to search in the directory, in the side terminal that shows the file preview all these commands are executed so I end up with neofetch on top of each preview and I have to scroll down to see the output of bat (figure shows end of neofetch and start of file).

Is there a way to open the side terminal without all the "init" commands (or only some of them)?
Thank you

[PatrickF1]

In config.fish, put all your interactive changes that print stuff under
status is-interactive || exit

Explanation for why this works and is necessary can be found in Related: #182.