Script which checks if an expected output pattern given on command line or per config file matches the content of a given table

In case I have to simplify a RQG or MTR test for a just found bug I am often focused on
some expected output derived from a back trace or similar.
Some challenge is to assign a good value to the $expected_output variable.
Good means it is neither
- plain wrong or
- too strict
  The value matches the protocol of the run where I found the bug.
   But later simplifier test runs have slight unexpected variations of this output
   depending on whatever conditions.
   Such conditions are mostly outside of my control.

Given the fact that I have
- already one protocol with to be expected output before setup of simplification
- more than one protocol with expected output after simplification starts to go wrong
a tool which checks in advance if some protocol matches the expected output
would save significant time.