function unichar_compose(a: String, b: String, ch: String): Boolean {
    // Gjs wrapper for g_unichar_compose()

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.unichar_decompose. 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.

Since 2.30


a Unicode character


a Unicode character


return location for the composed character


true if the characters could be composed