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Don't panic if the other end of std{out,err} is closed (#4179)

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* fix #4161

println! and friends will panic on BrokenPipe. The solution is to use
writeln! instead, and ignore the error (or do we want to do something else?)

* test that nu doesn't panic in case of BrokenPipe error

* fixup! test that nu doesn't panic in case of BrokenPipe error

* make do_not_panic_if_broken_pipe only run on UNIX systems
This commit is contained in:
Braulio Valdivielso Martínez
2021-12-20 23:08:41 +00:00
committed by GitHub
parent e919f9a73b
commit d32aec5906
2 changed files with 30 additions and 3 deletions
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16
crates/nu-protocol/src/macros.rs
View File

@ -6,7 +6,7 @@
macro_rules! out {
($($tokens:tt)*) => {
use std::io::Write;
print!($($tokens)*);
write!(std::io::stdout(), $($tokens)*).unwrap_or(());
let _ = std::io::stdout().flush();
}
}
@ -17,7 +17,12 @@ macro_rules! out {
/// and stray printlns left by accident
#[macro_export]
macro_rules! outln {
($($tokens:tt)*) => { println!($($tokens)*) }
($($tokens:tt)*) => {
{
use std::io::Write;
writeln!(std::io::stdout(), $($tokens)*).unwrap_or(())
}
}
}
/// Outputs to standard error
@ -26,7 +31,12 @@ macro_rules! outln {
/// and stray printlns left by accident
#[macro_export]
macro_rules! errln {
($($tokens:tt)*) => { eprintln!($($tokens)*) }
($($tokens:tt)*) => {
{
use std::io::Write;
writeln!(std::io::stderr(), $($tokens)*).unwrap_or(())
}
}
}
#[macro_export]