Computes the canonical or compatibility decomposition of a
Unicode character. For compatibility decomposition,
pass true for compat; for canonical decomposition
pass false for compat.
The decomposed sequence is placed in result. Only up to
result_len characters are written into result. The length
of the full decomposition (irrespective of result_len) is
returned by the function. For canonical decomposition,
currently all decompositions are of length at most 4, but
this may change in the future (very unlikely though).
At any rate, Unicode does guarantee that a buffer of length
18 is always enough for both compatibility and canonical
decompositions, so that is the size recommended. This is provided
as G_UNICHAR_MAX_DECOMPOSITION_LENGTH.
Computes the canonical or compatibility decomposition of a Unicode character. For compatibility decomposition, pass
trueforcompat; for canonical decomposition passfalseforcompat.The decomposed sequence is placed in
result. Only up toresult_lencharacters are written intoresult. The length of the full decomposition (irrespective ofresult_len) is returned by the function. For canonical decomposition, currently all decompositions are of length at most 4, but this may change in the future (very unlikely though). At any rate, Unicode does guarantee that a buffer of length 18 is always enough for both compatibility and canonical decompositions, so that is the size recommended. This is provided asG_UNICHAR_MAX_DECOMPOSITION_LENGTH.See UAX#15 for details.