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42 lines
1 KiB
Text
42 lines
1 KiB
Text
emulate -L zsh
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# run-help is a zsh widget that can be bound to a key. It mainly looks up the
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# man page for the currently typed in command.
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#
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# Although run-help works for any command without requiring special support,
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# it can only deduce the right man page based solely on the name of the
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# command. Programs like Nix provide better integration with run-help by
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# helping zsh identify Nix subcommands and their corresponding man pages. This
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# is what this function does.
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#
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# To actually use run-help on zsh, place the following lines in your .zshrc:
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#
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# (( $+aliases[run-help] )) && unalias run-help
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# autoload -Uz run-help run-help-nix
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#
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# Then also assign run-help to any key of choice:
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#
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# bindkey '^[h' run-help
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while [[ "$#" != 0 && "$1" == -* ]]; do
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shift
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done
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local -a subcommands; subcommands=( nix3 )
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local arg
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for arg in "$@"; do
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if man -w "${(j:-:)subcommands}-$arg" >/dev/null 2>&1; then
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subcommands+="$arg"
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else
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break
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fi
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done
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if (( $#subcommands > 1 )); then
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man "${(j:-:)subcommands}"
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else
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man nix
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fi
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return $?
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