(CPP) The highlighter doesn't support variadic templates/parameter packs

[mortie]

Describe the issue

This is valid C++ syntax:

template<typename... T>
void foo(const T &... args) {}

Yet, when highlighting with highlight, the returned object's illegalBy.msg is Illegal lexeme "." for mode "function".

Which language seems to have the issue?

cpp

Are you using highlight or highlightAuto?

highlight

Sample Code to Reproduce

Here's a modified version of the example JSFiddle: https://jsfiddle.net/dueh84nq/1/ - I changed it to display the illegal/illegalBy values.

Expected behavior

Since the syntax is legal, I would expect it to be highlighted somehow, not rejected as illegal.

Additional context

Here's some info on C++'s parameter packs: https://en.cppreference.com/w/cpp/language/parameter_pack

[joshgoebel]

// only allow /[\w\s\*&:<>]/
illegal: /[^\w\s\*&:<>]/,

Dropping . into this list of what is allowed (since it's negated) would likely resolved. Want to try making a PR?