Re: [BUG PATCH RFC] mailinfo: correctly handle multiline 'Subject:' header

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On Fri, Dec 26, 2008 at 09:38:41PM +0300, Kirill Smelkov wrote:
> When native language (RU) is in use, subject header usually contains several
> parts, e.g.
> 
> Subject: [Navy-patches] [PATCH]
> 	=?utf-8?b?0JjQt9C80LXQvdGR0L0g0YHQv9C40YHQvtC6INC/0LA=?=
> 	=?utf-8?b?0LrQtdGC0L7QsiDQvdC10L7QsdGF0L7QtNC40LzRi9GFINC00LvRjyA=?=
> 	=?utf-8?b?0YHQsdC+0YDQutC4?=

Which btw should be extracted by git-mailinfo to:

    'Subject: Изменён список пакетов необходимых для сборки'

> This exposes several bugs in builtin-mailinfo.c that I try to fix:
> 
> 
> 1. decode_b_segment: do not append explicit NUL -- explicit NUL was preventing
>    correct header construction on parts concatenation via strbuf_addbuf in
>    decode_header_bq. Fixes:
> 
> -Subject: Изменён список пакетов необходимых для сборки
> +Subject: Изменён список па
> 
> 
> Then
> 
> 2. (hackish) do not emit '\n' after processing of every header segment. It
>    seems we should emit previous part as-is only if it does not end with
>    '=?='. Fixes:
> 
> -Subject: Изменён список пакетов необходимых для сборки
> +Subject: Изменён список па кетов необходимых для сборки
> 
> 
> Sorry for low-quality patch and description. I did what I could and don't have
> energy and time dig more into MIME.
> 
> Please help.
> 
> Signed-off-by: Kirill Smelkov <kirr@xxxxxxxxxx>
> 
> ---
>  builtin-mailinfo.c  |   18 ++++++++++++++++-
>  t/t5100-mailinfo.sh |    2 +-
>  t/t5100/info0012    |    5 ++++
>  t/t5100/msg0012     |    7 ++++++
>  t/t5100/patch0012   |   30 +++++++++++++++++++++++++++++
>  t/t5100/sample.mbox |   52 +++++++++++++++++++++++++++++++++++++++++++++++++++
>  6 files changed, 112 insertions(+), 2 deletions(-)

Junio, All,

What about this patch?

It at least exposes bug in git-mailinfo wrt handling of multiline
subjects, and in very details documents it and adds a test for it.


Yes, my fixes are of 'low quality', but may I try to attract git
community attention one more time?


Thanks beforehand,
Kirill


P.S. original post with patch:

http://marc.info/?l=git&m=123031899307286&w=2
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