Hi all, as in the previous posts I and II I'd like to anonymize names of cities and to keep the length of a string. The nature of logs is quite complex. I'm sharing the part in question: 2022-03-31 15:23:11,210 INFO ...  - ... 381 lines omitted ... F_AUSWEISENDE=12.02.2022  F_AUSWEISNUMMER=A2A2A2AAA F_BEHOERDE=Berlin F_BV_FREITEXTANTRAG= --------------- What I'd like to get is: 2022-03-31 15:23:11,210 INFO ...  - ... 381 lines omitted ... F_AUSWEISENDE=12.02.2022  F_AUSWEISNUMMER=A2A2A2AAA F_BEHOERDE=XXXXXX F_BV_FREITEXTANTRAG= --------------- Sometimes, unfortunately, the names are more complex and include processing errors: F_BEHOERDE=Stadt Rastatt B\xFCrgerb\xFCro then I'd like to get: F_BEHOERDE=XXXXX XXXXXXX XXXXXXXXXXXXXXXX I've managed to create the regex which anonymizes city names but doesn't keep the length of them. If the dynamic version is not possible. Probably I will need to stick with this: s/F_BEHOERDE=.*/F_BEHOERDE=XXXXX/g  I'll be grateful for any hints ... View more