pango_glyph_string_set_size (glyphs, index + 1);
pangolite_glyph_string_set_size (glyphs, index + 1);
add_glyph(PangoGlyphString *glyphs,          gint              clusterStart,           PangoGlyph        glyph,          gboolean          combining){  gint index = glyphs->num_glyphs;  pango_glyph_string_set_size (glyphs, index + 1);    glyphs->glyphs[index].glyph = glyph;  glyphs->glyphs[index].attr.is_cluster_start = combining ? 0 : 1;  glyphs->log_clusters[index] = clusterStart;}