updated for version 7.2-052

runtime/doc/eval.txt

@@ -5348,10 +5348,12 @@ synIDattr({synID}, {what} [, {mode}])			*synIDattr()*
 		"fg"		foreground color (GUI: color name used to set
 				the color, cterm: color number as a string,
 				term: empty string)
-		"bg"		background color (like "fg")
+		"bg"		background color (as with "fg")
+		"sp"		special color (as with "fg") |highlight-guisp|
 		"fg#"		like "fg", but for the GUI and the GUI is
 				running the name in "#RRGGBB" form
 		"bg#"		like "fg#" for "bg"
+		"sp#"		like "fg#" for "sp"
 		"bold"		"1" if bold
 		"italic"	"1" if italic
 		"reverse"	"1" if reverse

src/eval.c

@@ -16648,8 +16648,11 @@ f_synIDattr(argvars, rettv)
 		p = highlight_has_attr(id, HL_INVERSE, modec);
 		break;
 
-	case 's':					/* standout */
-		p = highlight_has_attr(id, HL_STANDOUT, modec);
+	case 's':
+		if (TOLOWER_ASC(what[1]) == 'p')	/* sp[#] */
+		    p = highlight_color(id, what, modec);
+		else					/* standout */
+		    p = highlight_has_attr(id, HL_STANDOUT, modec);
 		break;
 
 	case 'u':

src/version.c

@@ -676,6 +676,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    52,
 /**/
     51,
 /**/