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PO.NET regular expression to match "anything else"
 

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  1. PO.NET regular expression to match "anything else"
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    <p>I am constructing a <a href="http://en.wikipedia.org/wiki/Regular_expression" rel="nofollow noreferrer">regular expression</a> that will contain a number of groups in a logical OR relationship ...</p> <pre><code>(group A)|(group B)|(group C) </code></pre> <p>This expression already successfully matches its intended sub-strings, but I need to add a final group that will match anything else, with the result that the target string will be entirely consumed by matches.</p> <p>Can anyone please suggest what this missing group expression should be?</p> <p>Edit: Linefeeds are not an issue, so I assume we can use the simpler of the proposed syntaxes. However, I am clearly doing something really dumb, as I have simplified my expression such that it only contains (.*?) and it refuses to capture anything - just a bunch of empty matches. (I am using Rad Regex Designer for testing, but I have also tried another Regex tool and the result is the same).</p> <p>Edit: As suggested, here is an example input. This is a simple Excel formula, but it could be any Excel formula:</p> <pre><code>SUM(A5:D9)+AVERAGE(F5:I5)-LOOKUP(L5, N5:N14) </code></pre> <p>The group expressions described above are designed to extract cell references (e.g. L5) or cell range references (e.g. F5:I5). So, when the expression is executed against the sample input, it must produce the following 9 captures:</p> <ol> <li><code>SUM(</code> </li> <li><code>A5:D9</code></li> <li><code>)+AVERAGE(</code></li> <li><code>F5:I5</code></li> <li><code>)-LOOKUP(</code></li> <li><code>L5</code></li> <li><code>,</code></li> <li><code>N5:N14</code></li> <li><code>)</code></li> </ol>
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    1. USIvan Nevostruev
    1. USTim Coulter
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    1. COThat's right. Regexp `(.*?)` will always match to empty string because you're using `*?` which means 0 or move symbols, but 0 is more priority.
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      1. USIvan Nevostruev
    2. COSo, does this mean there is no solution? I hope not :(
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      1. USTim Coulter
    3. COUpdate: +? captures non-empty strings, but each one is only a single character. Is there any way to concatenate them?
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      1. PO.NET regular expression to match "anything else"
      1. USTim Coulter
 

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