Function u = utf8_from_uint32(k) converts unicode code points to bytes in the utf-8 encoding. A unicode code point is an unsigned integer of 32-bits. It is represented by one or more 8-bit bytes in the utf-8 encoding. Bytes in the utf-8 encoding are the ordinary way to represent characters in Octave. The input argument is a row vector of unsigned 32-bit integers or a cell-array of such row vectors. The output argument is a character row vector or a cell-array of character row vectors, respectively. Character matrices are not accepted here. They are not recommended, because the (dis-)assembly of character matrices is complicated by padding characters (or bytes) which are needed due to the varying number of bytes by which each single character may be encoded. (c) 2026 fabien van mook 2026.08.20 release of this file within package "fvm-miscellaneous" under GNU GPLv3+