ot_layout_get_ligature_carets

Fetches a list of the caret positions defined for a ligature glyph in the GDEF table of the font.

The list returned will begin at the offset provided.

Note that a ligature that is formed from n characters will have n-1 caret positions. The first character is not represented in the array, since its caret position is the glyph position.

The positions returned by this function are 'unshaped', and will have to be fixed up for kerning that may be applied to the ligature glyph.

Parameters:

font	The Font to work on
direction	The Direction text direction to use
glyph	The Codepoint code point to query
start_offset	offset of the first caret position to retrieve
caret_array	The array of caret positions found for the query
caret_count	Input = the maximum number of caret positions to return; Output = the actual number of caret positions returned (may be zero)

Returns:

Total number of ligature caret positions for glyph.