diff --git a/runtime/doc/quickfix.txt b/runtime/doc/quickfix.txt
index f380dc6..f2bc327 100644
--- a/runtime/doc/quickfix.txt
+++ b/runtime/doc/quickfix.txt
@@ -1,4 +1,4 @@
-*quickfix.txt*  For Vim version 8.1.  Last change: 2019 Jul 15
+*quickfix.txt*  For Vim version 8.1.  Last change: 2019 Aug 06
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -1352,6 +1352,9 @@
 Note: By default the difference between upper and lowercase is ignored.  If
 you want to match case, add "\C" to the pattern |/\C|.
 
+Vim will read lines of any length, but only the first 4095 bytes are used, the
+rest is ignored.  Items can only be 1023 bytes long.
+
 
 Basic items