Update runtime files
diff --git a/runtime/doc/pattern.txt b/runtime/doc/pattern.txt
index a4ddd8d..90c33ad 100644
--- a/runtime/doc/pattern.txt
+++ b/runtime/doc/pattern.txt
@@ -1,4 +1,4 @@
-*pattern.txt*   For Vim version 8.1.  Last change: 2018 Dec 26
+*pattern.txt*   For Vim version 8.1.  Last change: 2019 Feb 21
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -1211,7 +1211,7 @@
 \%u20AC	Matches the character specified with up to four hexadecimal
 	characters.
 \%U1234abcd	Matches the character specified with up to eight hexadecimal
-	characters.
+	characters, up to 0x7fffffff
 
 ==============================================================================
 7. Ignoring case in a pattern					*/ignorecase*