Better , . and whitespaces

- The comma/dot signs are still failing
- All regexes should only match when there a whitespace OR end/beginning of string on start and end of the pattern

Start by locating the regular expressions responsible for comma and dot matching. Check the existing behavior around whitespace and string boundaries, then verify that the affected patterns handle both whitespace and the beginning or end of the string. Done means comma and dot cases no longer fail and all relevant regexes enforce those boundaries.

Written by the indexing model from the issue text.