patch 8.1.1265: when GPM mouse support is enabled double clicks do not work

Problem:    When GPM mouse support is enabled double clicks in xterm do not
            work.
Solution:   Use KS_GPM_MOUSE for GPM mouse events.

src/keymap.h

@@ -114,6 +114,9 @@
 #define KS_SGR_MOUSE		237
 #define KS_SGR_MOUSE_RELEASE	236
 
+/* Used for the GPM mouse. */
+#define KS_GPM_MOUSE		235
+
 /*
  * Filler used after KS_SPECIAL and others
  */

src/os_unix.c

@@ -3794,7 +3794,10 @@ check_mouse_termcode(void)
 	    && !gui.in_use
 #  endif
 	    )
-	set_mouse_termcode(KS_MOUSE, (char_u *)IF_EB("\033MG", ESC_STR "MG"));
+	set_mouse_termcode(KS_GPM_MOUSE,
+				      (char_u *)IF_EB("\033MG", ESC_STR "MG"));
+    else
+	del_mouse_termcode(KS_GPM_MOUSE);
 # endif
 
 # ifdef FEAT_SYSMOUSE
@@ -7065,7 +7068,8 @@ gpm_close(void)
 	Gpm_Close();
 }
 
-/* Reads gpm event and adds special keys to input buf. Returns length of
+/*
+ * Reads gpm event and adds special keys to input buf. Returns length of
  * generated key sequence.
  * This function is styled after gui_send_mouse_event().
  */

src/term.c

@@ -4396,9 +4396,6 @@ check_termcode(
 # endif
 #endif
     int		cpo_koffset;
-#ifdef FEAT_MOUSE_GPM
-    extern int	gpm_flag; /* gpm library variable */
-#endif
 
     cpo_koffset = (vim_strchr(p_cpo, CPO_KOFFSET) != NULL);
 
@@ -5122,6 +5119,9 @@ check_termcode(
 	 * If it is a mouse click, get the coordinates.
 	 */
 	if (key_name[0] == KS_MOUSE
+# ifdef FEAT_MOUSE_GPM
+		|| key_name[0] == KS_GPM_MOUSE
+# endif
 # ifdef FEAT_MOUSE_JSB
 		|| key_name[0] == KS_JSBTERM_MOUSE
 # endif
@@ -5144,7 +5144,11 @@ check_termcode(
 
 # if !defined(UNIX) || defined(FEAT_MOUSE_XTERM) || defined(FEAT_GUI) \
 	    || defined(FEAT_MOUSE_GPM) || defined(FEAT_SYSMOUSE)
-	    if (key_name[0] == (int)KS_MOUSE)
+	    if (key_name[0] == KS_MOUSE
+#  ifdef FEAT_MOUSE_GPM
+		    || key_name[0] == KS_GPM_MOUSE
+#  endif
+	       )
 	    {
 		/*
 		 * For xterm we get "<t_mouse>scr", where
@@ -5274,9 +5278,12 @@ check_termcode(
 		modifiers = 0;
 	    }
 
-	if (key_name[0] == (int)KS_MOUSE
+	if (key_name[0] == KS_MOUSE
+#  ifdef FEAT_MOUSE_GPM
+	    || key_name[0] == KS_GPM_MOUSE
+#  endif
 #  ifdef FEAT_MOUSE_URXVT
-	    || key_name[0] == (int)KS_URXVT_MOUSE
+	    || key_name[0] == KS_URXVT_MOUSE
 #  endif
 	    || key_name[0] == KS_SGR_MOUSE
 	    || key_name[0] == KS_SGR_MOUSE_RELEASE)
@@ -5293,7 +5300,7 @@ check_termcode(
 			&& !gui.in_use
 #   endif
 #   ifdef FEAT_MOUSE_GPM
-			&& gpm_flag == 0
+			&& key_name[0] != KS_GPM_MOUSE
 #   endif
 			)
 		{
@@ -5342,7 +5349,7 @@ check_termcode(
 	    }
 # endif /* !UNIX || FEAT_MOUSE_XTERM */
 # ifdef FEAT_MOUSE_NET
-	    if (key_name[0] == (int)KS_NETTERM_MOUSE)
+	    if (key_name[0] == KS_NETTERM_MOUSE)
 	    {
 		int mc, mr;
 
@@ -5365,7 +5372,7 @@ check_termcode(
 	    }
 # endif	/* FEAT_MOUSE_NET */
 # ifdef FEAT_MOUSE_JSB
-	    if (key_name[0] == (int)KS_JSBTERM_MOUSE)
+	    if (key_name[0] == KS_JSBTERM_MOUSE)
 	    {
 		int mult, val, iter, button, status;
 
@@ -5489,7 +5496,7 @@ check_termcode(
 	    }
 # endif /* FEAT_MOUSE_JSB */
 # ifdef FEAT_MOUSE_DEC
-	    if (key_name[0] == (int)KS_DEC_MOUSE)
+	    if (key_name[0] == KS_DEC_MOUSE)
 	    {
 	       /* The DEC Locator Input Model
 		* Netterm delivers the code sequence:
@@ -5624,7 +5631,7 @@ check_termcode(
 	    }
 # endif /* FEAT_MOUSE_DEC */
 # ifdef FEAT_MOUSE_PTERM
-	    if (key_name[0] == (int)KS_PTERM_MOUSE)
+	    if (key_name[0] == KS_PTERM_MOUSE)
 	    {
 		int button, num_clicks, action;
 
@@ -5705,14 +5712,14 @@ check_termcode(
 	    {
 # ifdef CHECK_DOUBLE_CLICK
 #  ifdef FEAT_MOUSE_GPM
-#   ifdef FEAT_GUI
 		/*
-		 * Only for Unix, when GUI or gpm is not active, we handle
+		 * Only for Unix, when GUI not active, we handle
-		 * multi-clicks here.
+		 * multi-clicks here, but not for GPM mouse events.
 		 */
-		if (gpm_flag == 0 && !gui.in_use)
+#   ifdef FEAT_GUI
+		if (key_name[0] != KS_GPM_MOUSE && !gui.in_use)
 #   else
-		if (gpm_flag == 0)
+		if (key_name[0] != KS_GPM_MOUSE)
 #   endif
 #  else
 #   ifdef FEAT_GUI
@@ -5800,7 +5807,7 @@ check_termcode(
 
 	    /* Work out our pseudo mouse event. Note that MOUSE_RELEASE gets
 	     * added, then it's not mouse up/down. */
-	    key_name[0] = (int)KS_EXTRA;
+	    key_name[0] = KS_EXTRA;
 	    if (wheel_code != 0
 			      && (wheel_code & MOUSE_RELEASE) != MOUSE_RELEASE)
 	    {

src/version.c

@@ -767,6 +767,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1265,
 /**/
     1264,
 /**/