How to create a regex excluding a character?

@wilmer.lemke 

To create a regular expression that excludes a specific character, you can use a negated character class. This can be done by using a caret (^) followed by the character you want to exclude inside square brackets [].

For example, if you want to match any word that does not contain the letter "a", you can use the following regex:

1

[^a]+

In this regex:

•  indicates a word boundary
• [^a] specifies that any character except "a" should be matched
• specifies that the preceding character class should be matched one or more times

You can customize this regex based on your specific requirements and the character you want to exclude.