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With C++11 uniform initialization and initializer lists we cannot
longer easily see whether we are calling a normal constructor or one
which takes a initializer_list. For example:
struct V {
V(int x) {}
V(std::initializer_list x) {}
};
V v{1};
V vv{1, 2};
Surprisingly to some people, in both cases the second constructor, taking
a std::initializer_list, is used.
This change shows the difference by putting the name
std::initializer_list in front of an initializer list.