Test, validate and match regular expressions
Uses a negative lookahead (multiline) to match lines that contain neither any word character (letters, digits, underscore) nor specific Obsidian config paths such as .obsidian/hotkeys., icons, snippets, themes, or the obsidian-icon-folder plugin data. Intended for the Remotely Save plugin to exclude Obsidian configuration files from syncing. Note the |(\w) alternation makes it effectively match only blank or symbol/punctuation-only lines.