Abrreviate variable name Stata 15.1

[felix opero]

Hi all,
I have updated my Stata installation from 13 to 15.1.
It seems this new version does not use abbreviated variable names. This is causing me a hard time working with old dofiles.

For example I have to write _merge instead of _mer even though there is no other variable with such a prefix

Is there a workaround on this?

[Maarten Buis]

set varabbrev on, permanently

[felix opero]

Thanks alot.