How to Replace a Malformed UTF-8 Regex
You may sometimes receive an error warning you about a malformed UTF-8 regular expression, or regex, while executing a Perl script. Perl is a programming language designed to run scripts which, for example, can perform regexes. A regex is a matching method which programmers use to identify strings stored in variables. In the Western world, programs encode strings by using the UTF-8 character encoding format which uses standard Roman characters. You can prevent your script from generating error messages when running a UTF-8 encoded regex by using a special feature in versions 5.14 and above of the Perl interpreter.
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Instructions
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Download the latest version of the Perl interpreter from the official Perl website (see Resources). To do this, select the correct version for your operating system and click on "Download ActivePerl." Run the program and follow the instructions to upgrade your current version of the Perl interpreter to the latest one.
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Open your Perl script in a text editor, such as Notepad.
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Insert the following line at the top of the script:
use feature 'unicode_strings';
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Save your Perl script.
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