updated for version 7.4.145

Problem:    getregtype() does not return zero for unknown register.
Solution:   Adjust documention: return empty string for unknown register.
            Check the register name to be valid. (Yukihiro Nakadaira)

runtime/doc/eval.txt

@@ -3460,7 +3460,7 @@ getregtype([{regname}])					*getregtype()*
 		    "v"			for |characterwise| text
 		    "V"			for |linewise| text
 		    "<CTRL-V>{width}"	for |blockwise-visual| text
-		    0			for an empty or unknown register
+		    ""			for an empty or unknown register
 		<CTRL-V> is one character with value 0x16.
 		If {regname} is not specified, |v:register| is used.
 

src/ops.c

@@ -6240,7 +6240,9 @@ get_reg_type(regname, reglen)
     regname = may_get_selection(regname);
 #endif
 
-    /* Should we check for a valid name? */
+    if (regname != NUL && !valid_yank_reg(regname, FALSE))
+        return MAUTO;
+
     get_yank_register(regname, FALSE);
 
     if (y_current->y_array != NULL)

src/version.c

@@ -738,6 +738,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    145,
 /**/
     144,
 /**/