Regular Expressions: How to find dashes between words

Question

In PCRE how to find dashes between words

e.g.

First-file-111-222.txt
This-is-the-second-file-123-456.txt
And-the-last-one-66-77.txt

So, the dash between First and and File (etc)

Then I could replace them with a space.

With ([^a-zA-Z]\d(.+)) I could select the last part (dash+nbrs) but I don't know how to mark the other dashes.

== edit the idea is to use a renamer tool (supporting regular expressions) - the rename would then to result in

First file-111-222.txt
This is the second file-123-456.txt
And the last one-66-77.txt

so, the - after the last word and between the numbers to be kept in place. only the ones between words to be replaced.

Answer 1

If I'm not missing anything following regex should work for you:

(?<=\D)-(?=\D)

It just means find a hyphen char if it is between 2 non-digit characters.

Live Demo: http://www.rubular.com/r/O2XUNaB02R