All safe methods are also idempotent, but not all idempotent methods are safe. For example, PUT and DELETE are both idempotent but unsafe.

The question on the title: replace space with new line The simple, quick, brute force solution is to do exactly that, replace all spaces with new lines:

Group Rules from the Admins1NO POSTING LINKS INSIDE OF POST - FOR ANY REASONWe've seen way too many groups become a glorified classified ad & members don't like that. We don't want the quality of our group negatively impacted because of endless links everywhere. NO LINKS2NO POST FROM FAN PAGES / ARTICLES / VIDEO LINKSOur mission is to cultivate the highest quality content inside the group. If we allowed videos, fan page shares, & outside websites, our group would turn into spam fest. Original written content only3NO SELF PROMOTION, RECRUITING, OR DM SPAMMINGMembers love our group because it's SAFE. We are very strict on banning members who blatantly self promote their product or services in the group OR secretly private message members to recruit them.4NO POSTING OR UPLOADING VIDEOS OF ANY KINDTo protect the quality of our group & prevent members from being solicited products & services - we don't allow any videos because we can't monitor what's being said word for word. Written post only.

This definition is actually a strict subset of the first definition: as the same script must (by definition) run inside both a server/Node.js context, but also a browser DOM context

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