How to further refine column names when regex=True?

[marks-res]

I'm testing with >=0.14.5

1. Is adding unique_column_names to my Config class the right way to catch non-unique headers? I have 10 columns that match the same regex and duplicated names don't seem to get caught.

2. Is it possible to add a Checker for the column header in a field definition? I'd like to extend the logic without a complicated regex. In my case, the header can contain a number suffix in an arbitrary format, surrounded by brackets.

3. I added a Checker in my Config class that loops through the column names. With v0.14.5 I am able to throw a SchemaError in the Checker, have it caught in run_checks() and obtain a formatted line in failure_cases. However, beyond 0.14.5 this try/except of a SchemaError has been removed, resulting in an ugly line within failure_cases that captures a message and none of the other details of the schema error. Is there a different/better way of doing this going forward?

Thanks!