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Try to canonically compose 2 characters. Returns the composed character if they do compose and dchar.init otherwise.
dchar compose (
) pure nothrow @safe;
The assumption is that
first comes before
second in the original text,
usually meaning that the first is a starter.
Hangul syllables are not covered by this function.
writeln(compose('A', '\u0308')); // '\u00C4' writeln(compose('A', 'B')); // dchar.init writeln(compose('C', '\u0301')); // '\u0106' // note that the starter is the first one // thus the following doesn't compose writeln(compose('\u0308', 'A')); // dchar.init
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