Thanks for mentioning it! First time I heard about Commit Mono. The first paragraph already had me wondering how a monospace font can read this well.

Turns out it has smart kerning, ie. character positions are subtly adjusted to compensate for different character widths. For example, i is narrow and m is wide. That causes words like "commit" to look bad in standard monospace fonts. The m's in the middle are very densely spaced and there are wide gaps around the i.

I'll be testing Commit Mono in my editors. Maybe it will even make me switch SilverBullet back to a monospace config.