Lets expand our query further: suppose that we want to get all the data rows that have punctuation characters in them staring with the most common of comma, period, exclamation point, question mark, semicolon and colon.
Like we can do with combinations involving alphabetic or numerical characters, we can use combinations with special characters too.
In this section, well look at finding other special characters, introduce the not character, which can be useful for alphabetic and numerical character expressions, and look at applications with regular expressions.
Well use our existing tables to find special characters staring with our alphareg table.
In the strings below, you'll find that the content of each line is indented by some whitespace from the index of the line ().
Try writing a pattern that can match each line containing whitespace characters between the number and the content.
This reduces backtracking and the need for boundaries in the broad sense of the term, in which I include lookarounds.