Function parseGroupHeader
Retrieve group name from header entry.
auto inout(char)[] parseGroupHeader
(
inout(char)[] s
) pure nothrow @nogc @safe;
Returns
group name or empty string if the entry is not group header.
Example
assert(parseGroupHeader("[Group name]") == "Group name");
assert(parseGroupHeader("NotGroupName") == string .init);
assert(parseGroupHeader("[Group name]" .dup) == "Group name" .dup);