Problems with a combination of a mingw program, mintty, and CYGWIN=disable_pcon

Takashi Yano
Thu May 7 10:17:07 GMT 2020

Hi André,

Thanks for the report.

On Thu, 7 May 2020 03:38:25 +0000
André Bleau via Cygwin <> wrote:
> Hi cygwin users,
> I have cli program that I run with mintty. It is a simple C++ program, reading from cin and outputing to cout. It is cross-compiled as a mingw program. I've been running it without problems fro over 2 years. Recently, I updated cygwin to 3.1.4-1 and noticed the pcon support. Since then, the output of my program has been messy: output lines have intermittent gaps in them. I made a simple test case that reproduces the problem, from the following simple C++ file, hello.cpp :
> #include <iostream>
> using namespace std;
> static string Green		= "\033[32m";
> static string Yellow	= "\033[33m";
> static string Reset		= "\033[0m";

To use escape sequences in pseudo console, please add the following
code just like in normal cosole (command prompt).

#include <windows.h>
DWORD mode;
GetConsoleMode(GetStdHandle(STD_OUTPUT_HANDLE), &mode);
SetConsoleMode(GetStdHandle(STD_OUTPUT_HANDLE), mode);

This should solve your problem.

Takashi Yano <>

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