patch 7.4.1890
Problem:    GUI: When channel data is received the cursor blinking is
            interrupted.  (Ramel Eshed)
Solution:   Don't update the cursor when it is blinking.
diff --git a/src/proto/gui_gtk_x11.pro b/src/proto/gui_gtk_x11.pro
index 7e94b58..3735f8d 100644
--- a/src/proto/gui_gtk_x11.pro
+++ b/src/proto/gui_gtk_x11.pro
@@ -1,6 +1,7 @@
 /* gui_gtk_x11.c */
 void gui_mch_prepare(int *argc, char **argv);
 void gui_mch_free_all(void);
+int gui_mch_is_blinking(void);
 void gui_mch_set_blinking(long waittime, long on, long off);
 void gui_mch_stop_blink(void);
 void gui_mch_start_blink(void);
diff --git a/src/proto/gui_mac.pro b/src/proto/gui_mac.pro
index 9e7f54f..ff83759 100644
--- a/src/proto/gui_mac.pro
+++ b/src/proto/gui_mac.pro
@@ -14,6 +14,7 @@
 void gui_mac_focus_change(EventRecord *event);
 void gui_mac_update(EventRecord *event);
 short gui_mch_get_mac_menu_item_index(vimmenu_T *menu, vimmenu_T *parent);
+int gui_mch_is_blinking(void);
 void gui_mch_set_blinking(long wait, long on, long off);
 void gui_mch_stop_blink(void);
 void gui_mch_start_blink(void);
diff --git a/src/proto/gui_photon.pro b/src/proto/gui_photon.pro
index d8efe07..46d73b7 100644
--- a/src/proto/gui_photon.pro
+++ b/src/proto/gui_photon.pro
@@ -39,6 +39,7 @@
 void gui_mch_draw_string(int row, int col, char_u *s, int len, int flags);
 void gui_mch_draw_hollow_cursor(guicolor_T color);
 void gui_mch_draw_part_cursor(int w, int h, guicolor_T color);
+int gui_mch_is_blinking(void);
 void gui_mch_set_blinking(long wait, long on, long off);
 void gui_mch_start_blink(void);
 void gui_mch_stop_blink(void);
diff --git a/src/proto/gui_w32.pro b/src/proto/gui_w32.pro
index c8411f9..e35373c 100644
--- a/src/proto/gui_w32.pro
+++ b/src/proto/gui_w32.pro
@@ -1,6 +1,7 @@
 /* gui_w32.c */
 int directx_enabled(void);
 int gui_mch_set_rendering_options(char_u *s);
+int gui_mch_is_blinking(void);
 void gui_mch_set_blinking(long wait, long on, long off);
 void gui_mch_stop_blink(void);
 void gui_mch_start_blink(void);
diff --git a/src/proto/gui_x11.pro b/src/proto/gui_x11.pro
index d4eb2d9..2d2eafa 100644
--- a/src/proto/gui_x11.pro
+++ b/src/proto/gui_x11.pro
@@ -53,6 +53,7 @@
 void gui_mch_menu_hidden(vimmenu_T *menu, int hidden);
 void gui_mch_draw_menubar(void);
 void gui_x11_menu_cb(Widget w, XtPointer client_data, XtPointer call_data);
+int gui_mch_is_blinking(void);
 void gui_mch_set_blinking(long waittime, long on, long off);
 void gui_mch_stop_blink(void);
 void gui_mch_start_blink(void);