In Tools | Options, Miscellaneous, Versioning tab, there is the 'mandatory' ability to select when local files will be purged:
Local History: Keep Local History Files for [value] days.
The user should be able to disable this feature with a "Save all local history files" option.
Also, if you enter 99999999999999999999999999, the warning is "Must be a number". 99999999999999999999999999 is a number.
two different problem:
1.) need option to keep files in LH forever -> enhancement
2.) too big numbers ( > 2^32) in "Keep LH Files for ..." cause an "Must be a
number" error. -> filed a new issue #179833 to over this
Integrated into 'main-golden'
User: Tomas Stupka <firstname.lastname@example.org>
Log: Issue #179826 - Add ability to keep all Local History Files