How to overwrite nerd font icons?

[Oneechan69]

For instance, I want to replace the nf-md-numeric_1_circle_outline icon (you can search that in https://www.nerdfonts.com/cheat-sheet to see), with this Apple SF Symbol 1.circle instead. I use a nerd font in Neovide (an Nvim GUI), where I can paste in the text character for 1.circle and it shows correctly without additional steps. On nerdfonts.com, it says at the bottom "You can even specify a custom symbol font with the --custom option to include even more glyphs." but I didn't find any instructions for how exactly to make a font file with the glyphs I want. I want to be able to overwrite any nerd icon with one in the SF Symbols app.

[Finii]

• Take the SF Symbol "1.circle" and put it into a new font
• at the codepoint of numeric_1_circle_outline
• Patch a font and add --custom your_new_font_file.ttf to all the other options you use

All glyphs in the your_new_font_file.ttf font will be patched in without shifting codepoints and without scaling.

If you already have a Nerd Fonts patched font it might be easier to do that with a font editor like fontforge

• Open both fonts
• Mark 1.circle in SF Symbol font and click copy
• Mark destination codepoint in target font
• Push paste
• Save font

😬

I use a nerd font in Neovide (an Nvim GUI), where I can paste in the text character for 1.circle and it shows correctly without additional steps.

Not sure what that means 🤔 If it works, it works?