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Visual Studio allows the Unicode character Zero Width Space (U+200B) to be pasted into the code editor. This character is (as the name implies) invisible.
This can lead to nasty bugs such as the one I just spent time troubleshooting where HttpWebRequest.CreateHttp(string url) threw a UriFormatException when passed the innocuous-looking string literal "http://www.umich.edu".
The exception occurred because the first character in that string literal is not h, as it appears, but is the Zero Width Space character. It was put onto the clipboard when I copied the URL from the body of a web page, and was dutifully pasted into my code by Visual Studio when I hit Ctrl+V in the code editor window.
Turning on the "View White Space" option (Edit > Advanced > View White Space) does not cause Visual Studio to reveal that there's a Zero Width Space character present.
I would like Visual Studio to:
Is there a way to make Visual Studio do this?
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The zero-width space (), abbreviated ZWSP, is a non-printing character used in computerized typesetting to indicate word boundaries to text-processing systems in scripts that do not use explicit spacing, or after characters (such as the slash) that are not followed by a visible space but after which there may ...
replace() method to remove the Unicode zero width non-joiner \u200c characters from the string. The same approach can be used to remove Unicode zero width space characters \u200b .
The zero width space is Unicode character U+200B. (HTML ​). It's remarkably hard to type. On Windows you can type Alt-8203.
Finally, I am able to remove 'Zero Width Space' character by using 'Unicode Regex'. String plainEmailBody = new String(); plainEmailBody = emailBodyStr. replaceAll("[\\p{Cf}]", "");
The Gremlins tracker for Visual Studio Code worked for me.
https://github.com/nhoizey/vscode-gremlins
P.s.: IntelliJ recognizes those hidden troublesome chars OOTB
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