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 %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.
See UAX#15
for details.