Emacs: fontaine version 3.1.0

Fontaine allows the user to define detailed font configurations and set them on demand. For example, one can have a regular-editing preset and another for presentation-mode (these are arbitrary, user-defined symbols): the former uses small fonts which are optimised for writing, while the latter applies typefaces that are pleasant to read at comfortable point sizes.

Package name (GNU ELPA): fontaine
Official manual: https://protesilaos.com/emacs/fontaine
Change log: https://protesilaos.com/emacs/fontaine-changelog
Git repositories:
- GitHub: https://github.com/protesilaos/fontaine
- GitLab: https://gitlab.com/protesilaos/fontaine
Backronym: Fonts, Ornaments, and Neat Typography Are Irrelevant in Non-graphical Emacs.

Below are the release notes.

Version 3.1.0 on 2026-06-29

This is a small release that includes internal refinements as well as two user-facing changes:

The user option fontaine-presets accepts an optional :line-spacing entry, which corresponds to the line-spacing variable. As of Emacs version 31, line-spacing can be bound to a cons cell to set the space above and below. Fontaine now handles this as intended.
By default, changing the font size has the effect of resizing the frame. This is because of the original value of the variable frame-inhibit-implied-resize. Fontaine is now designed to always inhibit frame resizing, regardless of frame-inhibit-implied-resize.