Add allow_empty to check_logical() and check_character()
#1991
| Job | Run time |
|---|---|
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| 4m 40s | |
| 7m 42s | |
| 3m 56s | |
| 3m 9s | |
| 3m 16s | |
| 3m 18s | |
| 3m 37s | |
| 3m 20s | |
| 35m 15s |