[PATCH 1/1] Cygwin: console: Add workaround for windows xterm compatible mode bug.
Takashi Yano
takashi.yano@nifty.ne.jp
Mon Aug 12 13:48:00 GMT 2019
- 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.
---
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 075593523..3d26a0b90 100644
--- a/winsup/cygwin/fhandler_console.cc
+++ b/winsup/cygwin/fhandler_console.cc
@@ -326,6 +326,25 @@ 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;
}
--
2.21.0
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