Using string literal regex variables to create another regex pattern
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How do you use a variable in a regular expression?
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How can I expand a setting or variable in a vim regular expression?
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Javascript - set a variable using concatenation of strings
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Bash regular expression pattern matching spaces, within double brackets test, using "~=" operator
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Need to perform Wildcard (*,?, etc) search on a string using Regex
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Restrict passed parameter to a string literal
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For the provided string  how to Create a two variables and pass into next reqst
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Is there an analogue of the Variables command for general expressions?
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How to form a regex to recognize correct declaration of variable names
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Constructing variable names from a string
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How to use regex in string in java?
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Phrase search in string, making correct RegExp
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How to use a variable's value as another variable's name in bash
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substitution rules excluding subscripted variables
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Regex for quoted string with escaping quotes
102345
Should I use curly brackets or concatenate variables within strings?
1685
Why does this Java regex cause "illegal escape character" errors?