Using xseticon to set vim icon

Question

I've been trying to set the icon of vim terminals that I run by writing a small line in my .vimrc:

execute '!xseticon -id \"' . v:windowid . '\" /usr/share/icons/Faenza/apps/16/vim.png'

However, I can't get it to properly work. The strings are concatenating and all, however I get the error:

xseticon: error: Invalid window id format: "0".

which I think is because it is running the script before vim can properly grab window ids, perhaps because it is not yet running.

How can I work around or solve this?

Answer 1

You're right, when .vimrc is executed, the window hasn't yet been created. You can use the VimEnter event for that:

:autocmd VimEnter * execute ...