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Date: Thu, 7 May 2020 19:17:07 +0900
To: cygwin AT cygwin DOT com
Subject: Re: Problems with a combination of a mingw program, mintty, and
 CYGWIN=disable_pcon
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From: Takashi Yano via Cygwin <cygwin AT cygwin DOT com>
Reply-To: Takashi Yano <takashi DOT yano AT nifty DOT ne DOT jp>
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Hi André,

Thanks for the report.

On Thu, 7 May 2020 03:38:25 +0000
André Bleau via Cygwin <cygwin AT cygwin DOT com> 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);
mode |= ENABLE_VIRTUAL_TERMINAL_PROCESSING;
SetConsoleMode(GetStdHandle(STD_OUTPUT_HANDLE), mode);

This should solve your problem.

-- 
Takashi Yano <takashi DOT yano AT nifty DOT ne DOT jp>
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