269091 - Folded headers not shown as folded

Status: RESOLVED INVALID

(Thunderbird :: Mail Window Front End, defect)

Description

[Nate S.]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0

Some mail systems add very long header lines, and intentionally break them apart
with "/r/n". Thunderbird doesn't seem to read these properly.

Reproducible: Always
Steps to Reproduce:
1. send mail through a system that adds "/r/n" to header lines (SpamAssassin's
X-Spam-Report header is an example)
2. Open the message in Thunderbird, and select View>Headers>All
3.

Actual Results:  
The overly long header line runs off the right side of the screen.  I have to
click the line and drag to the right to see the rest of it

Expected Results:  
"/r/n" should generate a new line in the client.

Comment 1

[Mike Cowperthwaite]

Technically speaking, headers *are* a single line; folding -- that is, adding a 
newline plus whitespace indentation -- is a hack to allow very long headers 
within the constraints of preferred (80 char) and absolute (256? 1024?) line 
lengths in mail.  That SpamAssassin chooses to abuse the hack to format its 
report lines is not Mozilla's problem.

If Mozilla did not unfold the folded headers, it would break the display for 
other headers.

That said, you can use  View|Message Source  to see the headers, including those 
by SpamAssassin, exactly as they were sent.


Incidentally, "/r/n" doesn't have the special meaning you think it does -- it's 
done with backslashes:   \n   (the \r is a bogus holdover from MS-DOS).

Comment 2

[Nate S.]

right... duh.  backslashes.  sorry, i was tired.
And you know, I never even noticed view>message source.  That's actually
functional.  I probably won't even used view>headers>all anymore.

Thanks