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12.2 Composition of Unicode characters

The following function composes a Unicode character from two Unicode characters.

— Function: ucs4_t uc_composition (ucs4_t uc1, ucs4_t uc2)

Attempts to combine the Unicode characters uc1, uc2. uc1 is known to have canonical combining class 0.

Returns the combination of uc1 and uc2, if it exists. Returns 0 otherwise.

Not all decompositions can be recombined using this function. See the Unicode file CompositionExclusions.txt for details.