Request:support new powerline symbol

[glepnir]

Request

@ryanoasis Hi!
can support some symbol, i make a vim statusline plugin like spacemacs called spaceline.vim.but i found the nerdfonts only have these 3 symbols.so can add another symbols support? thanks for your work

[ryanoasis]

Thanks @taigacute

[Finii]

Closing because transferred to #1095

[github-actions]

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