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Cygwin: console: Add workaround for windows xterm compatible mode bug.

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- 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.
This commit is contained in:
Takashi Yano 2019-08-12 22:47:42 +09:00 committed by Corinna Vinschen
parent 92e2c1ad9d
commit 33a21904a7
1 changed files with 19 additions and 0 deletions
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19
winsup/cygwin/fhandler_console.cc
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@ -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;
}