Violation maximum line length (RFC 2822) for forwared mails

[rhkramer at gmail.com]

On Thursday, March 04, 2021 03:43:06 AM Ingo Klöcker wrote:
>  KMail does not properly (if at all) fold long header fields.

From the peanut gallery: I find the use of the word "fold" (especially in the 
Unix / Linux world) somewhat ambiguous.

Some people / contexts seem to mean the breaking of a line into shorter lines 
by the addition of line ends (trying to remember the right word) -- sort of a 
permanent change to the text.

Other people / contexts seem to mean the ability of some software (typically 
some text editors / word processors) to hide portions of the text, leaving 
(typically) only one leading line and some kind of marker (typically in the 
left margin) that can be clicked to reveal the text that was hidden.  (Leaving 
a different marker than can be used to re-hide the text.)

Still other people may mean simply the ability (of some software) to wrap a 
long line that would normally stream off to the right so that it appears as 
multiple lines in the "normal" view (to the right of the screen), with no need 
to horizontally scroll (to the left) to view the remainder of the line.

Which do you consider the proper behavior re headers in kmail?