From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <cygwin-cvs-return-14145-listarch-cygwin-cvs=sources.redhat.com@cygwin.com>
Received: (qmail 38864 invoked by alias); 12 Aug 2019 15:14:17 -0000
Mailing-List: contact cygwin-cvs-help@cygwin.com; run by ezmlm
Precedence: bulk
List-Id: <cygwin-cvs.cygwin.com>
List-Subscribe: <mailto:cygwin-cvs-subscribe@cygwin.com>
List-Post: <mailto:cygwin-cvs@cygwin.com>
List-Help: <mailto:cygwin-cvs-help@cygwin.com>, <http://sourceware.org/ml/#faqs>
Sender: cygwin-cvs-owner@cygwin.com
Received: (qmail 38808 invoked by uid 9078); 12 Aug 2019 15:14:17 -0000
Date: Mon, 12 Aug 2019 15:14:00 -0000
Message-ID: <20190812151417.38807.qmail@sourceware.org>
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
From: Corinna Vinschen <corinna@sourceware.org>
To: cygwin-cvs@sourceware.org
Subject: [newlib-cygwin] Cygwin: console: Add workaround for windows xterm
 compatible mode bug.
X-Act-Checkin: newlib-cygwin
X-Git-Author: Takashi Yano <takashi.yano@nifty.ne.jp>
X-Git-Refname: refs/heads/master
X-Git-Oldrev: 92e2c1ad9de2d140374bf789b2eb6142b3297120
X-Git-Newrev: 33a21904a702191cebf0e81b4deba2dfa10a406c
X-SW-Source: 2019-q3/txt/msg00039.txt.bz2

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=33a21904a702191cebf0e81b4deba2dfa10a406c

commit 33a21904a702191cebf0e81b4deba2dfa10a406c
Author: Takashi Yano <takashi.yano@nifty.ne.jp>
Date:   Mon Aug 12 22:47:42 2019 +0900

    Cygwin: console: Add workaround for windows xterm compatible mode bug.
    
    - The horizontal tab positions are broken after resizing console window.
      This seems to be a bug of xterm compatible mode of windows console.
      This workaround fixes this problem.

Diff:
---
 winsup/cygwin/fhandler_console.cc | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/winsup/cygwin/fhandler_console.cc b/winsup/cygwin/fhandler_console.cc
index df28c7f..b46a4d5 100644
--- a/winsup/cygwin/fhandler_console.cc
+++ b/winsup/cygwin/fhandler_console.cc
@@ -327,6 +327,25 @@ fhandler_console::send_winch_maybe ()
     {
       con.scroll_region.Top = 0;
       con.scroll_region.Bottom = -1;
+      if (wincap.has_con_24bit_colors ())
+	{
+	  /* Workaround for a bug of windows xterm compatible mode. */
+	  /* The horizontal tab positions are broken after resize. */
+	  DWORD dwLen;
+	  CONSOLE_SCREEN_BUFFER_INFO sbi;
+	  GetConsoleScreenBufferInfo (get_output_handle (), &sbi);
+	  /* Clear all horizontal tabs */
+	  WriteConsole (get_output_handle (), "\033[3g", 4, &dwLen, 0);
+	  /* Set horizontal tabs */
+	  for (int col=8; col<con.dwWinSize.X; col+=8)
+	    {
+	      char buf[32];
+	      __small_sprintf (buf, "\033[%d;%dH\033H", 1, col+1);
+	      WriteConsole (get_output_handle (), buf, strlen (buf), &dwLen, 0);
+	    }
+	  /* Restore cursor position */
+	  SetConsoleCursorPosition (get_output_handle (), sbi.dwCursorPosition);
+	}
       get_ttyp ()->kill_pgrp (SIGWINCH);
       return true;
     }