25 lines
659 B
Bash
Executable File
25 lines
659 B
Bash
Executable File
#!/bin/bash
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# Output short and long options from man/usage text
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set -o errexit -o pipefail -o nounset
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main() {
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declare tmpdir="_options.tmp"
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declare tmp="${tmpdir}/${1:-generic}"
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mkdir -p "$tmpdir"
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cat > "$tmp"
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# Do not propose single letter completions. It's not useful, it's noisy
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# and it makes completion slower:
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# Display all 200 possibilities? (y or n)
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# sed -rn 's/.* (-[a-zA-Z0-9]).*/\1/gp' < "$tmp"
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# Options requiring an argument make that explicit by appending
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# the equal sign (=)
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sed -rn '/^\s+-/p' "$tmp" |
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sed -rn 's/^\s{1,4}(-.)?\s{1,4}(--[a-zA-Z][-_a-zA-Z0-9]+=?).*/\2/p'
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}
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main "$@"
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