unicharCompose

fnbool unicharCompose(dchar a, dchar b, out dchar ch)

Performs a single composition step of the Unicode canonical composition algorithm.

This function includes algorithmic Hangul Jamo composition, but it is not exactly the inverse of [glib.global.unicharDecompose]. No composition can have either of a or b equal to zero. To be precise, this function composes if and only if there exists a Primary Composite P which is canonically equivalent to the sequence <a,b>. See the Unicode Standard for the definition of Primary Composite.

If a and b do not compose a new character, ch is set to zero.

See

UAX#15

for details.

Parameters

`a`	a Unicode character
`b`	a Unicode character
`ch`	return location for the composed character

Returns

true if the characters could be composed