[kmail2] [Bug 455273] New: "From <end-with>" filter fails to identify sender when they also have a name

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https://bugs.kde.org/show_bug.cgi?id=455273

            Bug ID: 455273
           Summary: "From <end-with>" filter fails to identify sender when
                    they also have a name
           Product: kmail2
           Version: 5.20.2
          Platform: Manjaro
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: sieve
          Assignee: kdepim-bugs at kde.org
          Reporter: maycne.sonahoz at posteo.net
  Target Milestone: ---

SUMMARY
Setting up KMail as replacement for Thunderbird, i found out sender filters
were inconsistently applied. After some testing, it appears the "From
<end-with>" filter fails to identify a sender address when the sender also has
a name. This might also apply to filters on other address fields, as well as
<start-with>, <not-start-with> and <not-end-with> filters.

STEPS TO REPRODUCE
1. Configure a filter for matching the end of a sender address.
For instance: "From <end-with> @domain.com"
2. Create/Have an email whose sender is defined by address and by name.
For instance: "My friend <myFriend at domain.com>"
3. Apply the previous filter to the previous email.
- Filter log can be used to confirm whether and how the filter is applied.

OBSERVED RESULT
The filter fails to match sender address.

EXPECTED RESULT
The filter matches the sender address, whether the sender has a name or not.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Manjaro stable / KDE Plasma X11
(available in About System)
KDE Plasma Version: 5.24.5
KDE Frameworks Version: 5.94.0
Qt Version: 5.14.4 (compiled with 5.14.3)

ADDITIONAL INFORMATION
- If the filter is changed to match "From <end-with> @domain.com>", the filter
matches
- If the filter is changed to match "From <contains> @domain.com", the filter
matches

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