Reply To: En space between abbreviations with GREP!?

So far you seem to be doing alright :) Except — an en-space? Isn't that far too wide? Perhaps you meant a Thin Space? (If so, use ~< below where I now have ~>)

It's fairly easy — you don't really want this:

w. w..

because the first w may be the last character of a longer word. So all you have to do is insert a word break b before that first w!

b[ul]. [ul].

(I'd rather suggest using [ul] instead of w, because the 'word character' set also includes digits.)

With all parentheses in place, this would be your Find

b([ul].) ([ul].)

and this your Replace

$1~>$2

(Advanced:

It's also possible to use Lookbehind/Lookahead, like this:

(?<=b[ul].) (?=[ul].)

and then you'd only have to use this in Replace:

~>

I think the Lookbehind/Lookahead approach would be slightly faster, because ID only has to 'touch' the space itself (although the actual difference would be very minor).)