term: Change signature of `Constraint::from_env`
Return `None` if there's no terminal.
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@ -146,7 +146,7 @@ pub fn run(options: Options, _ctx: impl term::Context) -> anyhow::Result<()> {
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let mut hi = Highlighter::default();
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let mut hi = Highlighter::default();
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let pretty = diff.pretty(&mut hi, &(), &repo);
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let pretty = diff.pretty(&mut hi, &(), &repo);
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pretty.write(Constraint::from_env().maximize());
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pretty.write(Constraint::from_env().unwrap_or_default());
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Ok(())
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Ok(())
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}
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}
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@ -372,6 +372,6 @@ mod test {
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let mut hi = Highlighter::default();
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let mut hi = Highlighter::default();
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let pretty = diff.pretty(&mut hi, &(), &repo);
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let pretty = diff.pretty(&mut hi, &(), &repo);
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pretty.write(Constraint::from_env().maximize());
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pretty.write(Constraint::from_env().unwrap_or_default());
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}
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}
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}
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}
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@ -60,13 +60,12 @@ impl Constraint {
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}
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}
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/// Create a constraint from the terminal environment.
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/// Create a constraint from the terminal environment.
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///
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/// Returns [`None`] if the output device is not a terminal.
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/// If standard out isn't a terminal, returns an unbounded constraint.
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pub fn from_env() -> Option<Self> {
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pub fn from_env() -> Self {
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if io::stdout().is_terminal() {
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if io::stdout().is_terminal() {
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Self::max(viewport().unwrap_or(Size::MAX))
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Some(Self::max(viewport().unwrap_or(Size::MAX)))
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} else {
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} else {
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Self::UNBOUNDED
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None
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}
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}
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}
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}
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}
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}
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@ -92,7 +91,7 @@ pub trait Element: fmt::Debug {
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/// Print this element to stdout.
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/// Print this element to stdout.
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fn print(&self) {
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fn print(&self) {
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for line in self.render(Constraint::from_env()) {
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for line in self.render(Constraint::from_env().unwrap_or_default()) {
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println!("{}", line.to_string().trim_end());
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println!("{}", line.to_string().trim_end());
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}
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}
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}
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}
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