Alignment Overrides, Regex help

[pschiltz]

I reviewed posts here but could not get Regular Expressions to work correctly for me. This is probably a rookie Regex question and not a BC question.

I need to do a Folder Compare. The two folders each have a large number of files with substantially similar filenames.

From Left folder:
20201207_CommStmt_PWS_Z590_20201204213517892.pdf
20201207_CommStmt_PAULS_2B722_20201204212729137.pd f

From Right folder:
20201207_CommStmt_PWS_Z590_20201208084713167.pdf
20201207_CommStmt_PAULS_2B722_20201208085352753.pd f

Ideally I want files beginning "20201207_CommStmt_PWS_Z590_" and "20201207_CommStmt_PAULS_2B722_" from each side to match up.

The end of the filename on both sides is a date-time in YYYYMMDDHHMMSSHHH format.

If I understand previous posts I have limited functionality on the filter for the right hand folder. I could get right side filenames without date-time stamp if it has to be done.

Thanks for the help.

[Aaron]

It's not without, but with the timestamp. You can define the mask to generically match the matching/equal text on both sides, but the date shift has to be explicitly included in at least the "With"/right side.
So something like:
(.*)_20201204213517892\.pdf
with
$1_20201208084713167.pdf
with Regular Expression enabled.

You can define a more general mask for the top line (to catch the random date), but the right side date must be explicit text.