[Users] (non-)editable combobox for header in compose message window

[Pierre Fortin]

On Fri, 25 Apr 2014 14:59:21 +0200 Christian Hesse wrote:

>Hello everybody,
>
>the compose message window uses comboboxes with entry to display header
>fields ("To:", "CC:", ...). I know people who type mail addresses
>directly into this entry field, leaving the real address entry empty.
>This results in headers that look like (note the missing white space):
>
>To:person at example.com 
>
>I would suggest to make the comboboxes non-editable by default.

Thinking out loud... :)  Is there any valid situation where the entered
information would not end with ":" ?  Since the space is a coded rule,
could the lack of ":" at the end be used to 'validate' the entered data?
But... then there's the possibility ":" could be entered at the end... :(

Scratch that...  non-editable sounds like the right answer...

>As editing for custom headers may by useful we could add a new
>configuration option "Allow editing header entries" anywhere in
>Configuration/Preferences/Compose/Writing.

Or in clawsrc:
  destination_headers={To,Cc,Bcc,Newsgroups,Reply-To,Followups-To,<future>}
with ": " the hard-coded rule.  
No idea how this would impact translations though...

>Any thoughts?

Pierre