Is it possible to only change the font size of the current window?

Question

As title. Say I have two vertical splits, and I only want to increase the font size of the right split. Is this possible? If so:

1. What's the API to get the current font size?
2. What's the API to set the current font size?

Thanks in advance!

Answer 1

Say I have two vertical splits, and I only want to increase the font size of the right split. Is this possible?

Unfortunately no, this is impossible. Vim is at heart a terminal based application where historically only a single font (plus fallbacks and bold and italics) could be used. GUI vim uses the same approach -- it only supports a 'single' font.

The "API" is only available for GUI vim with an option guifont you can set and get.

It is not ideal, but one can use it to create mappings to increase/decrease font size for the whole GVim (not per split window):

• https://github.com/habamax/.vim/blob/master/pack/local/start/vim-guifont-size/plugin/guifont_size.vim#L11-L11
• https://github.com/habamax/.vim/blob/master/pack/local/start/vim-guifont-size/autoload/guifont_size.vim#L16