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POREGEXP: capture group NOT followed by
 

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    <p><strong>I need to match following statements:</strong></p> <pre><code>Hi there John Hi there John Doe (jdo) </code></pre> <p><strong>Without matching these:</strong></p> <pre><code>Hi there John Doe is here Hi there John is here </code></pre> <p>So I figured that this regexp would work:</p> <pre><code>^Hi there (.*)(?! is here)$ </code></pre> <p>But it does not - and I am not sure why - I believe this may be caused by the capturing group (.*) so i thought that maybe making * operator lazy would solve the problem... but no. This regexp doesn't work too:</p> <pre><code>^Hi there (.*?)(?! is here)$ </code></pre> <p>Can anyone point me in the solutions direction?</p> <h1>Solution</h1> <p>To retrieve sentence <strong>without</strong> <code>is here</code> at the end (like <code>Hi there John Doe (the second)</code>) you should use (author @Thorbear):</p> <pre><code>^Hi there (.*$)(?&lt;! is here) </code></pre> <p>And for sentence that contains some data in the middle (like <code>Hi there John Doe (the second) is here</code>, <em>John Doe (the second)</em> being the desired data)simple grouping would suffice:</p> <pre><code>^Hi there (.*?) is here$ </code></pre> <p>.</p> <pre><code> ╔══════════════════════════════════════════╗ ║▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒║ ║▒▒▒Everyone, thank you for your replies▒▒▒║ ║▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒║ ╚══════════════════════════════════════════╝ </code></pre>
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    1. COWill "is here" necessarily be at the end of a line, or do you want to prevent it from occurring anywhere?
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    2. COFYI, the capturing group is not relevant. The regex will match exactly the same without it, it just won't capture anything.
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    3. COWhat I want to do is write two regexps one that matches sentence without "is here" **exactly** at the end of sentence. Solution to that is either what Thorbear had written `^Hi there (.*)(?<! is here)$` or what @Wiseguy has written `^Hi there ((?! is here).)*$` but for my usage first version is more appropriate Second thing I want to do is find sentences that have structure like this <pre>Hi there James is here</pre> and solution to that is simply `^Hi there (.*) is here$` Thank you all for replying!
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