Merge 2018-03 CWG Motion 5

Author: zygoloid

source/declarators.tex

@@ -2350,7 +2350,10 @@
 the \grammarterm{identifier-list} shall be equal to the value of that
 expression. The \grammarterm{unqualified-id} \tcode{get} is looked up
 in the scope of \tcode{E} by class member access lookup\iref{basic.lookup.classref},
-and if that finds at least one declaration, the initializer is
+and if that finds at least one declaration
+that is a function template whose first template parameter
+is a non-type parameter,
+the initializer is
 \tcode{e.get<i>()}. Otherwise, the initializer is \tcode{get<i>(e)},
 where \tcode{get} is looked up in the associated namespaces\iref{basic.lookup.argdep}.
 In either case, \tcode{get<i>} is interpreted as a \grammarterm{template-id}.