Tech

peispud

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Well, your regex is overly complex for your given requirements. You don't need to match the rest of the string. Just your desired one.<br />
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<pre><code id="code-20-43375092-1">/P\.E\.I\.</code></pre>
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<a href="https://filedb.experts-exchange.com/incoming/2022/01_w02/1580573/Capture.PNG" target="_blank" title="Capture.PNG (11 KB)"><img alt="Capture.PNG" class="file-block lazyload" style="max-width: 522px;" data-src="https://filedb.experts-exchange.com/incoming/2022/01_w02/1580573/Capture.PNG" /></a>
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Well, your regex is overly complex for your given requirements. You don't need to match the rest of the string. Just your desired one.



/P\.E\.I\.


Capture.PNGhttps://filedb.experts-exchange.com/incoming/2022/01_w02/1580573/Capture.PNG

Capture.PNG

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Please clarify, why the marked post is the answer. The used regex is unnecessarily complex to match &quot;P.E.I.&quot; according to your description.
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Please clarify, why the marked post is the answer. The used regex is unnecessarily complex to match "P.E.I." according to your description.

or
/,\s?\b((?:pe|nb|ns|nf)\b|P\.E\.I\.\B)/gi

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Thank you ste5an &nbsp;.<br><br>&nbsp;I did appreciate your reply.<br>As I read my question again, &nbsp;I admit that my question was not clear.<br>Your answer was a correct answer for my question.<br><br>I apologize for my error. &nbsp;<br><br>
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Thank you ste5an  .

 I did appreciate your reply.
As I read my question again,  I admit that my question was not clear.
Your answer was a correct answer for my question.

I apologize for my error.  



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As for why "P.E.I." was not matched, it's because \b matches at a word boundary. That is, between a word character (letter, digit, underscore) and a non-word character.
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As for why "P.E.I." was not matched, it's because \b matches at a word boundary. That is, between a word character (letter, digit, underscore) and a non-word character.

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<p>Hi</p><p>I am testing on Regex101.com</p><p><br></p><p>The regex criteria &nbsp;is&nbsp; &nbsp; &nbsp; &nbsp; /,\s?\b(pe|nb|ns|nf|P\.E\.I\.)\b/gi</p><p><br></p><p>The test string is&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ,PE , pe,nf, nf, NF, P.E.I.</p><p><br></p><p>But I can't get a match on P.E.I. unless I add another character (letter or number etc but not a period) to the end of the test string.</p><p><br></p><p>Any help would be appreciated</p><p><br></p>
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Hi
I am testing on Regex101.com
The regex criteria  is        /,\s?\b(pe|nb|ns|nf|P\.E\.I\.)\b/gi
The test string is            ,PE , pe,nf, nf, NF, P.E.I.
But I can't get a match on P.E.I. unless I add another character (letter or number etc but not a period) to the end of the test string.
Any help would be appreciated

Regex criteria is not quite right.

A regular expression ("regex") is a sequence of characters that define a search pattern, mainly for use in pattern matching with strings, or string matching, i.e. "find and replace"-like operations. Regular expression processors are found in several search engines, search and replace dialogs of several word processors and text editors, and in the command lines of text processing utilities, such as sed and AWK. Many programming languages provide regular expression capabilities, some built-in, for example Perl, JavaScript, Ruby, AWK, and Tcl, and others via a standard library, for example .NET languages, Java, Python and C++ (since C++11). Most other languages offer regular expressions via a library.