By default qifqif matchings are based on the payee field, and are exact matches (a match is a substring of the payee field).
This assumption is what makes qifqif intuitive and easy to use but brings some limitations. Noticeably it could be useful to :

• categorize transactions by considering many fields : eg if payee field contains xxxx and amount > 30e
• define a match as a list of tokens present in payee field but that don't have to be sequential

Regexes to the rescue

As the current implementation covers most of the cases, adding a regex flag would allow to keep current simplicity by default while offering the power of regexes to power users

Classic mode :

Amount..: 16.80
Payee...: VIREMENT AXA FRANCE FRAIS DE SOINS
Enter category:

Expert mode (-e) :

Transaction..: 16.80 | VIREMENT AXA FRANCE FRAIS DE SOINS
Enter category:

So matching all equivalent transaction with amount between 10 and 30 e could be used by entering a match alike

^[12]\d\..*AXA FRANCE