using the fringe to indicate good signatures

[Tomi Ollila]

On Tue, Sep 08 2015, David Edmondson <dme at dme.org> wrote:

> On Tue, Sep 08 2015, Daniel Kahn Gillmor <dkg at fifthhorseman.net> wrote:
>>> More seriously, we could use the indentation space for a similar
>>> indicator, which would allow us some room at an appropriate depth for
>>> each message (but not each part (in the default configuration)).
>>
>> hm, but couldn't the indentation space be spoofed by a well-crafted
>> message?  that is: a non-indented message will consume space up to (but
>> not including) the fringe.  so a well-crafted message could be made to
>> *look* like an indented message, including whatever is comparable to the
>> chrome/UI elements we would use for an actual signed message.
>
> Yes, I guess that is possible at some level.
>
> The fringe is a bitmap - we could use the leftmost vertical line of it
> for the outermost component, next line for the next component, ...
>
> Or perhaps use images:
>    - all levels of the message at this line are "good",
>    - some of the levels of the message at this line are "good".
>
> Or maybe display a QR code in the fringe, and you point your phone at it
> to find out what is going on?

QR-code does not fit into my 1-pixel-wide fringes, but barcode perhaps ;)

>
>> I think it is also acceptable to just punt at some level -- we can say
>> "notmuch-emacs will indicate the outermost signed message part in the
>> fringe; it will not indicate nested signed messages in the fringe".
>> this is still an improvement from the status quo.
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