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    <p>Here's a regex I used a while back that also deals with escaped quotes <strong>AND escaped delimiters</strong>. It's probably overkill for your requirements (counting columns) but perhaps it'll help you or someone else in the future with their parsing.</p> <pre><code>(?&lt;=^|(?&lt;!\\)\|)(\".*?(?&lt;=[^\\])\"|.*?(?&lt;!\\(?=\|))(?=")?|)(?=\||$) and broken down as: (?&lt;=^|(?&lt;!\\)\|) // look behind to make sure the token starts with the start anchor (first token) or a delimiter (but not an escaped delimiter) ( // start of capture group 1 \".*?(?&lt;=[^\\])\" // a token bounded by quotes | // OR .*?(?&lt;!\\(?=\|))(?=")? // a token not bounded by quotes, any characters up to the delimiter (unless escaped) | // OR // empty token ) // end of capture group 1 (?=\||$) // look ahead to make sure the token is followed by either a delimiter or the end anchor (last token) when you actually use it it'll have to be escaped as: (?&lt;=^|(?&lt;!\\\\)\\|)(\\\".*?(?&lt;=[^\\\\])\\\"|.*?(?&lt;!\\\\(?=\\|))(?=\")?|)(?=\\||$) </code></pre> <p>It's complicated, but there's method to this madness: Other regular expressions I googled would fall over if either a column at the start or end of the line was empty, delimited quotes were in odd places, the line or column started or ended with an escaped delimiter, and a bunch of other edge-case scenarios.</p> <p>The fact that you're using a pipe as a delimiter makes this regex even more difficult to read/understand. A tip is where you see a pipe by itself "|", it's a conditional OR in regex, and when it's escaped "\|", it's your delimiter.</p>
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