OT: Mail system trashes Swedish flag

Mark LaPierre marklapier at aol.com
Wed Mar 20 23:43:35 UTC 2013

On 03/20/2013 11:57 AM, Jonathan Ryshpan wrote:
> On Wed, 2013-03-20 at 20:05 +1030, Tim wrote:
>> On Tue, 2013-03-19 at 23:41 -0700, Jonathan Ryshpan wrote:
>>> I've just completed the first exercise for using inkscape, which is to
>>> draw a Swedish flag.  I saved it as a PDF and emailed it to a Swedish
>>> friend, but all he got when he viewed the image was an empty
>>> rectangle.  It seems the trouble is that somewhere in the mail system,
>> Check the MIME type that your mailer is sending it as.  It should be a
>> binary one specific to the actual file type.  And the file should be not
>> be converted, in any way, at either end.
>> However, if you're mistakenly sending it as a text/plain attachment,
>> mail systems may do whatever they usually do as text files go through
>> them, which can include translating line endings.
>> Likewise, if their end doesn't properly handle the type of attachment
>> that it's receiving.  Some systems label PDF files as simply being
>> application/octet-stream, which just means generic non-specific binary,
>> and some systems mishandle such files.
>> When you say you saved it as a PDF, are you actually saving as a PDF
>> filetype, or just tacking PDF onto the end of the filename?  Related to
>> that, are you sending a PDF file type without giving it a PDF filename?
> I'm a little perplexed.  Linux doesn't mark files with their type, as
> Mac systems do.  The file has a .pdf extension, and the file command
> shows it as PDF type.
>          $ file SwedishFlag.pdf
>          SwedishFlag.pdf: PDF document, version 1.5
>> How did you email it?  What mail program did you use?
> The email program is evolution.  I clicked "Send".
> Here is the start of the section of the message containing the
> attachment in question:
>          Content-Type: application/pdf; name="SwedishFlag.pdf"
>          Content-Description:
>          Content-Disposition: inline; filename="SwedishFlag.pdf"
>          Content-Transfer-Encoding: 8bit
> I've attached a copy of SwedishFlag.pdf.  Also SwedishFlag.zip, as
> suggested in an earlier posting.  Let's see what the mail system does to
> them in Linux systems.
> Thanks - jon

Opens and displays correctly in CentOS 6.4 using default document viewer.

    ^ ^  Mark LaPierre
Registered Linux user No #267004

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