get-csv: bugfix: return nil on EOF.

* stream.c (get_csv): Let's add a new state init. If get_char
returns nil and we are in the init state, let's bail to a
nil return. While we are at it, let's not allocate the record
or string until we read at least one character. If we read
a character in the init state, let's allocate those two
objects, and then change to the rfield state and fall through
to it to handle the character.

* tests/010/csv.tl: Fix one incorrect test: (tocsv "") now
returns nil, as it should. Add tests for multiple record
extraction, also covering missing line termination on the last
record as well as CR-LF termination.

* txr.1: Documented nil return conditions.

0 files changed, 0 insertions, 0 deletions