pango:glyph-item-split (item text index)

item -- a pango:glyph-item instance
text -- a string for the text positions in item apply
index -- an integer for the byte index of the position to split item, relative to the start of the item

The newly allocated pango:glyph-item instance representing text before index.

Modifies item to cover only the text after index, and returns a new glyph item that covers the text before index that used to be in item. You can think of index as the length of the returned item. The index argument may not be 0, and it may not be greater than or equal to the length of item, that is, there must be at least one byte assigned to each item, you cannot create a zero-length item.

This function is similar in function to the pango:item-split function and uses it internally.