Essentially, this is what I do. First matching with a broader regex ruleset, working down to next one and so on and so forth. But with more complexity of code comes more breakage down the line. I went in full maze mode yesterday and questioned everything after thtat, so this is what my sanity looked like this morning.

Regex isn't really the problem though (even though it technically should also not be the solution in this case, but I cannot dictate the techstack). It was just the last drop on my frustration with the situation and myself not being able to do, what my colleague does, even though I want to. I felt the need for help, and I got it. Awesome community around here.