Regex to fix year\\year and year\\year-month-day

[Zifnab]

Hello:
A lot of my files have the year set as one of the following:
1977\\1977
2009\\2009-10-12

All I want is to have just the year, so the two examples here would have 1977 and 2009 as the year. I have tried all sorts of regex formulaes, and they either do nothing or clear everything.
thanks.

[Florian]

Hi and welcome

It looks like the files have multiple year fields (you can inspect them individually via the extended tag dialog at Alt + T).

The easiest way to remove them is to use an action "Remove duplicate fields". See this topic for more on actions (in case it's needed).

Actions and batch-operations

Mp3tag provides a variety of actions, which can be applied to filenames and tags. The actions are grouped together into named sets (action groups), which can be applied independently via Alt + 6. If you do not want to create a reusable action group for applying one single action, the Actions (Quick) toolbar button or keyboard shortcut Shift + Alt + 6 can be used. How to create a new action? How to ... change upper/lower case of tag fields or filenames? replace the string “xyz” in tag-fields …

[Zifnab]

Worked like a charm. Thank you very much Florian!