Bulk lists often begin as messy text copied from chats, spreadsheets, or exports. Splitting them into one-item-per-line format makes later review much easier.
Common separators
Commas are the most common, but pipes, spaces, and custom delimiters also show up in real work.
Best workflow
Split first, trim the results, then sort or deduplicate if needed. Small sequential cleanup steps are easier to trust than doing everything manually.