I can see some advantages to those in hand-written regex, but none at all for these generated regex.
I can't imagine an application for a multi-line response to a single prompt, never mind accepting an abbreviated multi-line response.
I like consistency in coding style, and rules-of-thumb have their place, but I think you have to apply context to decisions.
Keeping two hands on the steering wheel is good general advice, but applied dogmatically, you'd never adjust a mirror or sun-visor; turn the radio on or off; shut the sat-nav up; scratch your ear...
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.
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