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Fix tty detection for msys2's /dev/ptmx #119664

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merged 1 commit into from
Jan 23, 2024
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Fix tty detection for msys2's /dev/ptmx #119664

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14 changes: 0 additions & 14 deletions library/std/src/sys/pal/windows/io.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -97,20 +97,6 @@ unsafe fn handle_is_console(handle: BorrowedHandle<'_>) -> bool {
return true;
}

// At this point, we *could* have a false negative. We can determine that this is a true
// negative if we can detect the presence of a console on any of the standard I/O streams. If
// another stream has a console, then we know we're in a Windows console and can therefore
// trust the negative.
for std_handle in [c::STD_INPUT_HANDLE, c::STD_OUTPUT_HANDLE, c::STD_ERROR_HANDLE] {
let std_handle = c::GetStdHandle(std_handle);
if !std_handle.is_null()
&& std_handle != handle
&& c::GetConsoleMode(std_handle, &mut out) != 0
{
return false;
}
}

// Otherwise, we fall back to an msys hack to see if we can detect the presence of a pty.
msys_tty_on(handle)
}
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