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From: Takashi Yano <tyan0@sourceware.org>
To: cygwin-cvs@sourceware.org
Subject: [newlib-cygwin] Cygwin: console: Fix OSC sequence handling.
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https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=e1026837dd43577273ec9fcbaf4c2c41fdabd56d

commit e1026837dd43577273ec9fcbaf4c2c41fdabd56d
Author: Takashi Yano <takashi.yano@nifty.ne.jp>
Date:   Thu Dec 2 12:35:47 2021 +0900

    Cygwin: console: Fix OSC sequence handling.
    
    - Currently, some OSC escape sequences, such as 'OSC 110 BEL', are
      not handled correctly. This patch fixes the issue.

Diff:
---
 winsup/cygwin/fhandler_console.cc | 31 ++++++++++++++++++++++++-------
 1 file changed, 24 insertions(+), 7 deletions(-)

diff --git a/winsup/cygwin/fhandler_console.cc b/winsup/cygwin/fhandler_console.cc
index d9ed71af8..4c98b5355 100644
--- a/winsup/cygwin/fhandler_console.cc
+++ b/winsup/cygwin/fhandler_console.cc
@@ -3308,13 +3308,30 @@ fhandler_console::write (const void *vsrc, size_t len)
 	case gotrsquare:
 	  if (isdigit (*src))
 	    con.rarg = con.rarg * 10 + (*src - '0');
-	  else if (*src == ';' && (con.rarg == 2 || con.rarg == 0))
-	    con.state = gettitle;
-	  else if (*src == ';' && (con.rarg == 4 || con.rarg == 104
-				   || (con.rarg >= 10 && con.rarg <= 19)))
-	    con.state = eatpalette;
-	  else
-	    con.state = eattitle;
+	  else if (*src == ';')
+	    {
+	      if (con.rarg == 0 || con.rarg == 2)
+		con.state = gettitle;
+	      else if ((con.rarg >= 4 && con.rarg <= 6)
+		       || (con.rarg >=10 && con.rarg <= 19)
+		       || (con.rarg >=104 && con.rarg <= 106)
+		       || (con.rarg >=110 && con.rarg <= 119))
+		con.state = eatpalette;
+	      else
+		con.state = eattitle;
+	    }
+	  else if (*src == '\033')
+	    con.state = endpalette;
+	  else if (*src == '\007')
+	    {
+	      wpbuf.put (*src);
+	      if (wincap.has_con_24bit_colors () && !con_is_legacy)
+		wpbuf.send (get_output_handle ());
+	      wpbuf.empty ();
+	      con.state = normal;
+	      src++;
+	      break;
+	    }
 	  wpbuf.put (*src);
 	  src++;
 	  break;