Currently, tmux does not render emoji from Unicode 15 (e.g. U+1FABF 🪿), because the `wcwidth` function from glibc does not know about the new characters. Support was added upstream but not released yet (https://sourceware.org/git/?p=glibc.git;a=commit;h=7fe6734d28feb18acb3c50b13a5f5a52f66d39cf). Instead, tmux can use the `wcwidth` function from utf8proc, which has regular updates so that we don't have to wait 6 months for the new characters to be supported. |
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default.nix |