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dherman/extract-usage.rs

Created March 3, 2018 16:59
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extract-usage.rs
fn extract_usage(s: &str) -> &str {
let (start, _) = s.match_indices("Usage:").next().unwrap();
let s = &s[start..];
let (end, _) = s.match_indices("\n\n").next().unwrap();
let s = &s[..end];
s.trim()
}
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