-/* Returns true if a I/O error has occurred while processing a
- datasheet operation. */
+/* Returns true if datasheet DS is tainted.
+ A datasheet is tainted by an I/O error or by taint
+ propagation to the datasheet. */
static bool
datasheet_reader_read (struct casereader *reader UNUSED, void *ds_,
casenumber case_idx, struct ccase *c)
static bool
datasheet_reader_read (struct casereader *reader UNUSED, void *ds_,
casenumber case_idx, struct ccase *c)