pango-break (text length analysis attrs attrs-len)

text -- a string with the text to process, must be valid UTF-8
length -- an integer with the length of text in bytes (may be -1 if text is nul-terminated)
analysis -- a pango-analysis structure from the function pango-itemize
attrs -- an array to store character information in
attrs-len -- an integer with the ize of the array passed as attrs

Determines possible line, word, and character breaks for a string of Unicode text with a single analysis. For most purposes you may want to use the function pango-log-attrs. The pango-break function has been deprecated since version 1.44 and should not be used in newly written code. Use the pango-default-break and pango-tailor-break functions.