It's a bit strange to consider that you can fiddle with user input but I can understand that for codes or other identifiers it makes sense to trim the data (according to me those fields shouldn't usually be editable in the interface anyway). Making it an opt-in feature is OK but we should use it parsimoniously.
|2018-12-10 16:38:34||nicoe||set||messageid: <firstname.lastname@example.org>|
|2018-12-10 16:38:34||nicoe||set||recipients: + ced, timitos, pokoli|
|2018-12-10 16:38:34||nicoe||link||issue7914 messages|
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