I'm wondering if there is any built in regex to match real number? It could make some application easier.
There aren't any builtin, and given that Vim doesn't have native support for floating-point math, it's not surprising. One can use something like
[-+]\=[0-9]*\.\=[0-9]\+\%([eE][-+]\=[0-9]\+\)\=
which should handle most of the common cases I've seen.
-tim
