Most languages have support for Regex (Regular Expressions) but, for example, JavaScript does not have Negative Lookhead ( (?< ), however .NET already Framework has practically all Regex functions. My question is:
Does the syntax, function, and spelling of Regex vary along the language in which it is being renamed?
NO
It does not vary, it is that it is always in development, and there is a gap between publishing a new feature and the libraries of various languages come to support them.
However, an expression has the same functionality in whatever language. What may occur is if it is a new expression / feature, that language may not yet support it.
But, vary, it does not vary.
