Re: correct way to anticipate decryption failures

[John Mastro <john.b.mastro@gmail.com>]

Rasmus <rasmus@gmx.us> wrote:
> What is the correct way to handle decryption errors when using
> auth-source?  I have something like,
>
>     (auth-source-search :host "worldwide.net"
>                         :user "rasmus"
>                         :max 1 :require '(:user :secret))
>
> This throws a decryption error when I haven't plugged in my (physical)
> security token.
>
> Depending on the arguments, sometimes this is called at init time causing
> my daemon window to vanish, which is sort of annoying.
>
> Should I ignore-errors or is there a better way to test if I'm currently
> able to decrypt .authinfo.gpg?  Could I re-throw the warning without it
> being an error?

You can probably use `with-demoted-errors'. Something like:

    (with-demoted-errors "Auth source error: %s"
      (auth-source-search :host "worldwide.net"
                          :user "rasmus"
                          :max 1 :require '(:user :secret)))

It catches the error and simply prints the message.

-- 
john