run-tests: extract a `process_out_line` from the main function...
run-tests: extract a `process_out_line` from the main function
The main function doing line comparison is quite complex. Slicing it in smaller
piece should clarify it.
To avoid a huge diff, the code is kept at the same indentation. We'll re-indent
in the next changesets.
(This is a gratuitous cleanup that I made while investigating a bug).
