741096 - Missing line break when a line ended with a space character

Status: RESOLVED INVALID

(Thunderbird :: General, defect)

Description

[Csipai Norbert]

Attachment: tb_bad_linebreak.jpg

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:11.0) Gecko/20100101 Firefox/11.0
Build ID: 20120312181643



Actual results:

In plain text message when a line ended with a simple space character, and there are a new line with some text, then the line break missed: the next line following this space inline.
Funny, when I see the source, there are correct line breaks of these lines, but in the main window wrong. See the attached image, there are the main message window (left side) and the source of this message too (right side). You can see, there are 4 lines in 1 line on the left side, because missing the line breaks.

I checked, these messages in other mail client showed correct. 
I checked the saved .eml file with a hex editor, there are the line break characters  (hex 0D 0A) after the space (hex 20), but in the window is't line break. 
So i'ts a bug.

Comment 1

[WADA:World Anti-bad-Duping Agency]

Can you attach mail data which consistently produces your problem?
(Save the mail as .eml file, edit the .eml file and remove/replace personal data like mail-addr, attach the .eml file to this bug with text/plain as mime-type.)

Comment 2

[Csipai Norbert]

Attachment: Sample email that reproduce the problem

Open it, and look at the last lines in the normal window, and the source of message, and will see the difference.

Comment 3

[WADA:World Anti-bad-Duping Agency]

"format=flowed" is defined by RFC 2646, and defined as ollows. 
> http://tools.ietf.org/html/rfc2646#section-5
>       paragraph     = 1*flowed-line fixed-line
>       fixed-line    = fixed / sig-sep
>       fixed         = [quote] [stuffing] *text-char non-sp CRLF
>       flowed-line   = flow-qt / flow-unqt
>       flow-qt       = quote [stuffing] *text-char 1*SP CRLF
>       flow-unqt     = [stuffing] *text-char 1*SP CRLF
What's wrong in Tb's interpretation of lines you reffered as flow-unqt?

Comment 4

[Csipai Norbert]

Hmmm, strange rule, not all LF are LF... but then it's not bug, I'll close this.