Tree branches not properly aligned, branch doesn't start at branching point

[fapdash]

Somehow the branches of my vundo tree don't align properly, this happens with utf8 glyphs, as well as with default ascii:

With unicode-symbols (keycast output in tab-bar)

Peek.2024-06-23.12-34.mp4

ascii with Symbola font family

Peek.2024-06-23.12-39.mp4

ascii with Ubuntu font family

Peek.2024-06-23.12-45.mp4

My config:

(use-package vundo
  :ensure t
  :config
  (setq vundo-glyph-alist vundo-unicode-symbols)
  (set-face-attribute 'vundo-default nil :family "Symbola")
  (global-set-key (kbd "C-x u") 'vundo))

Do you have any idea why this would be happening? Anything I could do to help with debugging this issue?

[casouri]

You need to use a monospace font for both ascii and unicode. Ascii is easier since most programming font are monospace; for unicode, you need to find a monospace font that has those glyphs. I use pragmata pro but it's paid. You can find what font is Emacs using for a character in a buffer by moving point over it and type C-u C-x =.

[fapdash]

Are there versions of Symbola that contain a monospaced version that I could find? I'm a bit confused since Symbola gets recommended in the README.

I then also ran into an issue where some of the glyphs where using Ubuntu Mono and some where using Fira Code.
What worked for me was this, with nerd-fonts installed via nerd-fonts.el:

(set-face-attribute 'vundo-default nil :font "FiraCode Nerd Font Mono" :family "FireCode Nerd Font")

[casouri]

Actually, I don't quite remember why I mentioned Symbola in the README 😅 Thanks for pointing that out, I probably should remove its mention. Nerd font looks good, you figured it out quite well!

[fapdash]

Thank you for your guidance and the great package! :)

[hperrey]

Thank you @fapdash for the fix as I just ran into the same issue. @casouri thank you for this great package -- I took the liberty of updating the README to suggest "FiraCode Nerd Font Mono" instead for "Symbola" and submit a PR.