Created attachment 98750 [details]
Bash script used to repair a broken filter set

Using the copy function in kmail dialogue causes some filters not to be applied afterwards.

Steps to reproduce the bug:
- open the kmail filter dialogue
- create a simple filter "test one", which marks a mail as ham if the subject contains "This is test one"
- click the copy button, rename the new filter as "test two" and changed the search pattern to "This is test two"
- close the kmail filter dialogue by "OK"
- open the filter protocol, make this function show _all_ details
- right click on any mail to apply "test one"
- right click on the same mail to apply "test two"

Result: Both filters use the same pattern

Expected result: Each of the two filters will use its own pattern

I think I have found the reason of this bug and a workaround: Exporting such a filter set, I find duplicate identifiers in the exported file. When I apply the script attached below and reimport its result (after having deleted the buggy filters), the filters do not show the buggy behaviour any more.

My system: OpenSuse 42.1 Leap with kmail 4.14.10 (German)