gf_path_add_subpath  302 include/gpac/path2d.h GF_Err gf_path_add_subpath(GF_Path *gp, GF_Path *subpath, GF_Matrix2D *mx);
gf_path_add_subpath  622 src/compositor/font_engine.c 				gf_path_add_subpath(path, span->glyphs[i]->path, &mx);