[PATCH] Cygwin: console: Fix OSC sequence handling.

[Takashi Yano]

- Currently, some OSC escape sequences, such as 'OSC 110 BEL', are
  not handled correctly. This patch fixes the issue.
---
 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;
-- 
2.33.0