/* File input. */
bool ds_read_line (struct string *, FILE *);
bool ds_read_config_line (struct string *, int *line_number, FILE *);
-size_t ds_read_stream (struct string *, size_t size, size_t cnt, FILE *stream);
+bool ds_read_stream (struct string *, size_t size, size_t cnt, FILE *stream);
/* Append. */
void ds_put_char (struct string *, int ch);