patch 8.0.0580: cannot set the valid flag with setqflist()
Problem: Cannot set the valid flag with setqflist().
Solution: Add the "valid" argument. (Yegappan Lakshmanan, closes #1642)
diff --git a/runtime/doc/eval.txt b/runtime/doc/eval.txt
index 83bc8f3..20297f5 100644
--- a/runtime/doc/eval.txt
+++ b/runtime/doc/eval.txt
@@ -6945,6 +6945,7 @@
nr error number
text description of the error
type single-character error type, 'E', 'W', etc.
+ valid recognized error message
The "col", "vcol", "nr", "type" and "text" entries are
optional. Either "lnum" or "pattern" entry can be used to
@@ -6954,6 +6955,8 @@
item will not be handled as an error line.
If both "pattern" and "lnum" are present then "pattern" will
be used.
+ If the "valid" entry is not supplied, then the valid flag is
+ set when "bufnr" is a valid buffer or "filename" exists.
If you supply an empty {list}, the quickfix list will be
cleared.
Note that the list is not exactly the same as what