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Install
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Your default zig needs to be version 0.15.2.  I don't make the rules.

git clone https://github.com/dickmao/emacs-ghostty.git
make -C emacs-ghostty install

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Usage
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M-x ghostty-vt

C-y pastes from the shell's kill ring (subsequent M-y from same).

C-c C-y pastes from emacs's kill ring (subsequent M-y from same).

C-c C-y also exits tmux-like copy mode to paste a just copied region.

Any "normal typing" (non-prefixed) key exits tmux-like copy mode.

C-p immediately enters tmux-like copy mode.

M-v immediately enters tmux-like copy mode.