Regular expressions (adv search) not working on Mac OS X?

[Tadeus Ras]

Hello fellow Mac LyXonauts,

Has anyone of you given the (imho very useful :) advanced search feature a try 
with regular expressions?
With the new maintenance release, I have revisited it. However it constantly 
refuses to give any matches with patterns as simple as
\regexp{[0-9]+\endregexp{}}   (source code panel entry obtained from 
advanced search —> insert —> regular expression —> arbitrary digit)

Is there an obvious bug in the above line of code? Or has anyone found a 
workaround — or not even that problem? I am on Mac OS X 10.11.6 (El Capitan) 
with the re-released LyX 2.2.2. The search with regular expressions seems to 
work on Windows 7 at least. Is it functional on Linux?

I had posted a bug report on this a while ago: 
http://www.lyx.org/trac/ticket/10356 
With the recent activity of Mac users on this list and dear Tommaso Cucinotta 
asking whether people are still using his nice feature (I am!) I thought this 
might be a good moment to readdress my issue.

Thanks for any feedback!
Tadeus

Ticket 10356 - "Regular expressions do not work on Mac OS X"

[Tadeus Ras]

Dear LyXonauts,

Sorry for the somewhat redundant report. I posted a ticket "Regular expressions 
do not work on Mac OS X" about 10 days ago. Mostly, I would like to know if 
other Mac users encounter the same problem (and if someone possibly found a 
workaround).

I will be offline till the 21st of September but happy to provide further 
details on my return (and even happier about suggestions how to use regular 
expressions with LyX on my Mac ;)

Cheers!
Tadeus

Ticket  "Regular expressions do not work on Mac OS X"
http://www.lyx.org/trac/ticket/10356