rb_econv_str_convert 2715 ext/zlib/zlib.c         str = rb_econv_str_convert(gz->ec, str, ECONV_PARTIAL_INPUT);
rb_econv_str_convert  346 include/ruby/encoding.h VALUE rb_econv_str_convert(rb_econv_t *ec, VALUE src, int flags);
rb_econv_str_convert 1397 io.c                       str = rb_econv_str_convert(fptr->writeconv, str, ECONV_PARTIAL_INPUT);