patch 8.1.2362: cannot place signs in a popup window

Problem:    Cannot place signs in a popup window. (Maxim Kim)
Solution:   Use the group prefix "PopUp" to specify which signs should show up
            in a popup window. (closes #5277)

runtime/doc/sign.txt

@@ -73,6 +73,10 @@ other plugins using signs.
 
 The group name "popupmenu" is used by popup windows where 'cursorline' is set.
 
+To place a sign in a popup window the group name must start with "PopUp".
+Other signs will not show in a popup window.  The group name "PopUpMenu" is
+used by popup windows where 'cursorline' is set.
+
 							*sign-priority*
 Each placed sign is assigned a priority value. When multiple signs are placed
 on the same line, the attributes of the sign with the highest priority is used

src/popupwin.c

@@ -611,7 +611,7 @@ popup_highlight_curline(win_T *wp)
     int	    sign_id = 0;
     char_u  *sign_name = popup_get_sign_name(wp);
 
-    buf_delete_signs(wp->w_buffer, (char_u *)"popupmenu");
+    buf_delete_signs(wp->w_buffer, (char_u *)"PopUpMenu");
 
     if ((wp->w_popup_flags & POPF_CURSORLINE) != 0)
     {
@@ -626,7 +626,7 @@ popup_highlight_curline(win_T *wp)
 	    sign_define_by_name(sign_name, NULL, (char_u *)linehl, NULL, NULL);
 	}
 
-	sign_place(&sign_id, (char_u *)"popupmenu", sign_name,
+	sign_place(&sign_id, (char_u *)"PopUpMenu", sign_name,
 			       wp->w_buffer, wp->w_cursor.lnum, SIGN_DEF_PRIO);
 	redraw_win_later(wp, NOT_VALID);
     }

src/sign.c

@@ -141,6 +141,19 @@ sign_in_group(sign_entry_T *sign, char_u *group)
 			      && STRCMP(group, sign->se_group->sg_name) == 0));
 }
 
+/*
+ * Return TRUE if "sign" is to be displayed in window "wp".
+ * If the group name starts with "PopUp" it only shows in a popup window.
+ */
+    static int
+sign_group_for_window(sign_entry_T *sign, win_T *wp)
+{
+    int for_popup = sign->se_group != NULL
+			&& STRNCMP("PopUp", sign->se_group->sg_name, 5) == 0;
+
+    return WIN_IS_POPUP(wp) ? for_popup : !for_popup;
+}
+
 /*
  * Get the next free sign identifier in the specified group
  */
@@ -484,8 +497,7 @@ buf_get_signattrs(win_T *wp, linenr_T lnum, sign_attrs_T *sattr)
 
 	if (sign->se_lnum == lnum
 # ifdef FEAT_TEXT_PROP
-		&& sign_in_group(sign, (char_u *)"popupmenu")
+		&& sign_group_for_window(sign, wp)
-					  == (WIN_IS_POPUP(wp) ? TRUE : FALSE)
 # endif
 		)
 	{
@@ -2645,8 +2657,7 @@ get_first_valid_sign(win_T *wp)
     sign_entry_T *sign = wp->w_buffer->b_signlist;
 
 # ifdef FEAT_TEXT_PROP
-    while (sign != NULL && sign_in_group(sign, (char_u *)"popupmenu")
+    while (sign != NULL && !sign_group_for_window(sign, wp))
-					  == (WIN_IS_POPUP(wp) ? FALSE : TRUE))
 	sign = sign->se_next;
 # endif
     return sign;

src/testdir/dumps/Test_popupwin_sign_1.dump

@@ -0,0 +1,10 @@
+|>+0#e000002#ffffff0@1>0+0#ffffff16#ff404010| @71
+| +0#0000e05#a8a8a8255@1|1+0#0000000#ffffff0| @71
+| +0#0000e05#a8a8a8255@1|2+0#0000000#ffffff0| @71
+| +0#0000e05#a8a8a8255@1|3+0#0000000#ffffff0| @23|#+0#ffffff16#ff404010|!|h+0#0000001#ffff4012|e|l@1|o| @12| +0#0000000#ffffff0@27
+| +0#0000e05#a8a8a8255@1|4+0#0000000#ffffff0| @23| +0#0000e05#a8a8a8255@1|b+0#0000001#ffd7ff255|r|i|g|h|t| @11| +0#0000000#ffffff0@27
+| +0#0000e05#a8a8a8255@1|5+0#0000000#ffffff0| @23| +0#0000e05#a8a8a8255@1|w+0#0000001#ffd7ff255|o|r|l|d| @12| +0#0000000#ffffff0@27
+| +0#0000e05#a8a8a8255@1|6+0#0000000#ffffff0| @71
+| +0#0000e05#a8a8a8255@1|7+0#0000000#ffffff0| @71
+| +0#0000e05#a8a8a8255@1|8+0#0000000#ffffff0| @71
+@57|1|,|1| @10|T|o|p| 

src/version.c

@@ -737,6 +737,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2362,
 /**/
     2361,
 /**/