vf_ccv_require	1045 src/ccv.c	  i = vf_ccv_require(argv[0], argv[1], argv[2],	argv[3]);
vf_ccv_require	1384 src/drv_ttf.c	ccv_id = vf_ccv_require(font_ttf->charset_name,	font_ttf->encoding_name,
vf_ccv_require	 407 src/drv_bdf.c	    = vf_ccv_require(charset, encoding,	font_charset, font_encoding);
vf_ccv_require	 532 src/drv_ekan.c	    = vf_ccv_require(charset, encoding,	font_charset, font_encoding);
vf_ccv_require	 619 src/drv_mojikmap.c	  = vf_ccv_require("JISX0208", "ISO2022", "UNICODE", "UNICODE");
vf_ccv_require	 640 src/drv_t1.c	  = vf_ccv_require(charset, encoding, font_charset, font_encoding);