38 lines
1.1 KiB
TypeScript
38 lines
1.1 KiB
TypeScript
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export interface OptionYankLastArgKeyEvent {
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key: string;
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code?: string;
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altKey: boolean;
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ctrlKey: boolean;
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metaKey: boolean;
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shiftKey: boolean;
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}
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const isPeriodKey = (e: OptionYankLastArgKeyEvent): boolean => (
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e.code === "Period" || e.key === "." || e.key === "≥"
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);
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const isUnderscoreKey = (e: OptionYankLastArgKeyEvent): boolean => (
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e.key === "_" || (e.code === "Minus" && e.shiftKey)
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);
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/**
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* macOS Option+. / Option+_ → readline yank-last-arg (issue #2364).
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*
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* Ghostty/iTerm2/kitty/VS Code do not implement this themselves — they pass
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* Meta-. through to bash/zsh. On macOS, Option+. types "≥" unless Option is
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* Meta, so map those two physical keys to ESC+. / ESC+_ without turning every
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* Option chord into Meta (unlike `altAsMeta`).
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*
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* Gated to macOS: Linux/Windows Alt+. already sends the ESC prefix via xterm.
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*/
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export function optionYankLastArgSequence(
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e: OptionYankLastArgKeyEvent,
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isMac: boolean,
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): string | null {
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if (!isMac) return null;
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if (!e.altKey || e.ctrlKey || e.metaKey) return null;
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if (isPeriodKey(e) && !e.shiftKey) return "\x1b.";
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if (isUnderscoreKey(e)) return "\x1b_";
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return null;
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}
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