Re: equal signs omitted in body of message?

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On Tue, Apr 07, 2026 at 09:01:15PM -0500, Greg Marks wrote:
>Following the discussion here:
>
>   https://stackoverflow.com/questions/38324093/php-html-email-equals-sign=
-in-email-is-being-converted-to-different-characte
>
>I attempted to resend the message with the original URL written as:
>
>   https://www.youtube.com/watch?v=3D3DvDktNSENjUU

The sender on that stackoverflow question was manually creating and=20
sending an email.

In their headers for the HTML part, they said the message contents were:
   Content-Transfer-Encoding: quoted-printable
But they did not in fact encode that part as quoted-printable.  So on=20
the receiving side, the client was trying to decode it as such, even=20
though it wasn't properly encoded, creating the problem.

When using a real MUA, such as mutt, the MUA will take care of choosing=20
and properly encoding the message for you, if needed.

>Might the issue be that I send messages as plain text but the recipient's
>MUA reads them as HTML?  Is there some setting in .muttrc that I could
>adjust to fix this issue from my end?

It's hard to say for sure what's happening, but whatever they are using=20
to read the message is likely the problem.  Best course of action is to=20
ask them to report a bug to their MUA, or to their email provider if=20
they use a web interface.  Some web interfaces provide a "view raw=20
message" option.  It might be interesting to see what that shows where=20
you typed the URL.  You could compare it to the message in your $record=20
folder.

You can manually set the encoding of your message using the=20
<edit-encoding> command, by default bound to ctrl-e at the compose menu.=20
You could try typing quoted-printable or even base64 at the prompt and=20
sending the message to see what happens on the recipient's side.  But=20
there isn't an easy way to automate this, because a normal user doesn't=20
need to do this.

--=20
Kevin J. McCarthy
GPG Fingerprint: 8975 A9B3 3AA3 7910 385C  5308 ADEF 7684 8031 6BDA

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