1742717 - forward or reply changes text/plain message to proportional space font

Status: UNCONFIRMED

(Thunderbird :: Message Compose Window, defect)

Description

[Daniel Karwatka]

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:94.0) Gecko/20100101 Firefox/94.0

Steps to reproduce:

Receive a plain text email sent by linux mailx. User-Agent: Heirloom mailx 12.5 7/5/10.
Forward or reply and the fixed space text/plain is change to text/html which is proportional space.

Actual results:

Content type is lost on forward or reply. Changed to Content-Type: text/html; charset=UTF-8.

Expected results:

The original message should have stayed Content-Type: text/plain.
The used to work properly and change several versions ago.

Comment 1

[Daniel Karwatka]

Also, consecutive spaces are changed to a single space.

Comment 2

[Daniel Karwatka]

Attachment: InboundSourceTextPlain.txt

This is the starting inbound email source.

Comment 3

[Daniel Karwatka]

Attachment: ForwardSourceTextHtml.txt

This is the message source created by Forward.

Comment 4

[John Bieling]

It looks like this is related to your default compose and/or delivery format setting. If that is not set to strict plain text, forwarding a message will open an HTML composer. The default delivery setting ("Automatic"), will send the message as pure plain text, if there are no special formattings (like tables) in the message. Forwarding however will add a table with some header information, which will cause the message to be sent as HTML.

If you hold the SHIFT key down while clicking on the Forward button, the default compose format will be inverted and a plain text composer will be opened. Sending the message should now not change the spaces.

Can you confirm this?

Comment 5

[Gordon Lack]

What I see (TB 115.6) is that a text/plain message gets forwarded as a multipart/alternative message, with the forwarded message sent as text/plain and text/html (my Sending Format setting).

So the html one is shown.

But the message has been forwarded with all multiple spaces compressed down to a single space.

I'm not composing the forwarded message, so my composition options shouldn't matter.

PS: Changing the "Forward messages" from Inline to As Attachment still leaves the forwarded message the same - i.e. it is placed in-line.

Comment 6

[Daniel Karwatka]

Attachment: Received Plain Text Email

As of 115.12.1 (64-bit) The Reply works properly but the Forward alters the formatting of the original message. It changes it from plain text to html.

Attached are three files. The originally received email, the reply email, and the forward email.

Comment 7

[Daniel Karwatka]

Attachment: Reply Plain Text Email

Comment 8

[Daniel Karwatka]

Attachment: Forward Plain Text Email