Q:

Autohotkey: Remove ALL single characters from a string

I would like a AHK script, which removes all the single characters from a string/clipboard. 
For instance I would like:
A man went to a casino
To become:
man went to casino
I have tried using RegEx & StringReplace but cannot create a script which does this. 

A:

Find a non-space character \S, which is at a word boundary from both sides \b, trim spaces \s+:
s := regexreplace("A man went to a casino", "\b\S\b\s+", "")

Result:

man went to casino

