How to work with regular expressions

[fox72]

How to work with regular expressions in a text editor Scribus in dialogue search and replace text. Text filter does not offer!

UPD
If the developers can not do it ourselves, we will let users program the opportunity to do it in their favorite text editor (geany, kate, kwrite, etc.)

UPD2
Text filters are needed not only when importing text. They are very necessary for frequent revisions to the already finished publication. Developers can make it possible to use a text filter to the text that is already in the publication?

[fox72]

Here is who?