Update macro and function regex

Macros do not necessarily have to be followed by an `(` parenthesis, but
they *do* necessarily have to *not* be followed by any of the characters
inside the backticks: `|^/&<>~.=!*+-`. Because if they do, then they're
no longer normal macros, but _operators_.

From https://hexdocs.pm/elixir/operators.html

> To define an operator, you can use the usual def* constructs (def,
> defp, defmacro, and so on) but with a syntax similar to how the
> operator is used

So, what applied to `defmacro` applies equally to `def`, that's why we
added the bracket expression to the function regex.

Author: dreamtigers

.ctags

@@ -1,12 +1,12 @@
 --langdef=Elixir
 --langmap=Elixir:.ex.exs
---regex-Elixir=/^[ \t]*def(p?)[ \t]+([a-z_][a-zA-Z0-9_?!]*)/\2/f,function,functions (def ...)/
+--regex-Elixir=/^[ \t]*def(p?)[ \t]+([a-z_][a-zA-Z0-9_?!]*)(.[^\|\^\/&<>~.=!*+-]+)/\2/f,function,functions (def ...)/
 --regex-Elixir=/^[ \t]*(@|def)callback[ \t]+([a-z_][a-zA-Z0-9_?!]*)/\2/c,callback,callbacks (@callback ...)/
 --regex-Elixir=/^[ \t]*defdelegate[ \t]+([a-z_][a-zA-Z0-9_?!]*)/\1/d,delegate,delegates (defdelegate ...)/
 --regex-Elixir=/^[ \t]*defexception[ \t]+([A-Z][a-zA-Z0-9_]*\.)*([A-Z][a-zA-Z0-9_?!]*)/\2/e,exception,exceptions (defexception ...)/
 --regex-Elixir=/^[ \t]*defguard(p?)[ \t]+(is_[a-zA-Z0-9_?!]+)/\2/g,guard,guards (defguard ...)/
 --regex-Elixir=/^[ \t]*defimpl[ \t]+([A-Z][a-zA-Z0-9_]*\.)*([A-Z][a-zA-Z0-9_?!]*)/\2/i,implementation,implementations (defimpl ...)/
---regex-Elixir=/^[ \t]*defmacro(p?)[ \t]+([a-z_][a-zA-Z0-9_?!]*)\(/\2/a,macro,macros (defmacro ...)/
+--regex-Elixir=/^[ \t]*defmacro(p?)[ \t]+([a-z_][a-zA-Z0-9_?!]*)(.[^\|\^\/&<>~.=!*+-]+)/\2/a,macro,macros (defmacro ...)/
 --regex-Elixir=/^[ \t]*defmacro(p?)[ \t]+([a-zA-Z0-9_?!]+)?[ \t]+([^ \tA-Za-z0-9_]+)[ \t]*[a-zA-Z0-9_!?!]/\3/o,operator,operators (e.g. "defmacro a <<< b")/
 --regex-Elixir=/^[ \t]*defmodule[ \t]+([A-Z][a-zA-Z0-9_]*\.)*([A-Z][a-zA-Z0-9_?!]*)/\2/m,module,modules (defmodule ...)/
 --regex-Elixir=/^[ \t]*defprotocol[ \t]+([A-Z][a-zA-Z0-9_]*\.)*([A-Z][a-zA-Z0-9_?!]*)/\2/p,protocol,protocols (defprotocol...)/