Preliminary mouse support.

TODO

@@ -65,3 +65,26 @@
 - anything which uses cmd_{send,recv}_string will break if the string is
   split. string length should be part of the command size
 - echo \\033[35\;46m\\033[2J last line quirk (with C-b r)
+
+--------
+kmous -- \E[M
+
+mouse init:     putp("\033[?1000h");
+mouse deinit:   putp("\033[?1000l");
+
+\e[M CbCxCy
+         * On button press or release, xterm sends ESC [ M CbCxCy.
+         * The low two bits of Cb encode button information: 0=MB1
+         * pressed, 1=MB2 pressed, 2=MB3 pressed, 3=release.  The
+         * upper bits encode what modifiers were down when the
+         * button was pressed and are added together.  4=Shift,
+         * 8=Meta, 16=Control.  Cx and Cy are the x and y coordinates
+         * of the mouse event.  The upper left corner is (1,1).
+
+
+       get_mouse                 getm     Gm   Curses should get
+                                               button events
+       key_mouse                 kmous    Km   Mouse event has
+                                               occurred
+       mouse_info                minfo    Mi   Mouse status
+                                               information