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@ -331,6 +331,24 @@ pub fn build_app(interactive_output: bool) -> ClapApp<'static, 'static> {
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.takes_value(true)
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.takes_value(true)
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.value_name("width")
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.value_name("width")
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.hidden_short_help(true)
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.hidden_short_help(true)
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.validator(
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|t| {
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let sign = t.chars().next().unwrap();
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let num = if (sign == '+') || (sign == '-') {
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t.chars().skip(1).collect()
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} else {
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t
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};
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num.parse::<u32>()
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.map_err(|_e| "must be an offset or number")
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.and_then(|v| if v == 0 && sign != '+' && sign != '-' {
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Err("terminal width cannot be zero".into())
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} else {
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Ok(())
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})
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.map_err(|e| e.to_string())
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})
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.help(
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.help(
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"Explicitly set the width of the terminal instead of determining it \
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"Explicitly set the width of the terminal instead of determining it \
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automatically. If prefixed with '+' or '-', the value will be treated \
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automatically. If prefixed with '+' or '-', the value will be treated \
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