Before posting I actually tried that expression on a text file. It is not mine, some kind user posted it or something, and it works on more than one type of nameing convention f I recall correctly.
But I do not understand it. I am not a regex person. Wish that I were.
I am happy if I get title/author correct on import in 95% cases and generally I do. Then I do the download metadata thing and this is reasonable in most cases.
An answer from chaley to another user today pointed me to a much easier way to modify tags and some other inconsistencies like the author initials thing you mentioned earlier in this thread I think. I am way too nitpicky about consistency, but the inconsistencies themselves are so inconsistent that it would almost take an AI to catch them all or a database of all known authors and the 12 different ways some of their names are used and punctuated by themselves and or publishers. I recently found a B author listed under I as his name was something like John B. Butterworth IV. I mean really
.
Oh well. Start a new thread and ask for the correct regex for the convention you are using. Someone will answer I am sure.
And not important but in my experience most metadata sources use A. N. author. Not as higgledy piggledy as two years ago.
Good luck and happy importing.
Helen