From Bug: https://bugs.kde.org/show_bug.cgi?id=259949#c310 About autocompletion (search for Thomas) > It does not show however contacts where the second name is the match, > e.g. contact > Hans Thomas Meier is not shown > it also does not show > Hans-Thomas Meier. Reproducible: Always
This bug has only been reported for versions before 4.14, which have been unsupported for at least two years now. Can anyone tell if this bug still present? If noone confirms this bug for a Framework-based version of kmail2 (version 5.0 or later, as part of KDE Applications 15.12 or later), it gets closed in about three months.
Just as announced in my last comment, I close this bug. If you encounter it again in a recent version (at least 5.0 aka 15.08), please open a new one unless it already exists. Thank you for all your input.