https://lists.freebsd.org/archives/freebsd-ports-bugs/2025-November/085950.html
[Bug 290272] plist issue in textproc/py-readchar
bugplistissuetextprocpy
https://learn.microsoft.com/ru-ru/dotnet/api/system.io.ports.serialport.readchar?view=netframework-4.8.1&viewFallbackFrom=net-10.0-pp
SerialPort.ReadChar Method (System.IO.Ports) | Microsoft Learn
Synchronously reads one character from the SerialPort input buffer.
serialportmethodsystemioports