| string(TIMESTAMP output "%a;%b") | |
| message("~${output}~") | |
| list(LENGTH output output_length) | |
| set(expected_output_length 2) | |
| if(NOT output_length EQUAL ${expected_output_length}) | |
| message(FATAL_ERROR "expected ${expected_output_length} entries in output " | |
| "with all specifiers; found ${output_length}") | |
| endif() |