"mailto" links, possibly with optional Subject, not rendering correctly

[kenlunde]

In Source Han Sans and other projects in our organization, the use of mailto is not working, perhaps when an optional Subject is specified.

The following is specified: [Dr. Ken Lunde](mailto:lunde@adobe.com?subject=[GitHub] Source Han Sans)

This is expected to be rendered as only Dr. Ken Lunde, but when clicked, will initiate an email in the default email client with "[GitHub] Source Han Sans" specified as the default Subject.

Instead, I see the literal markdown, per the screenshot below:

This happens regardless of the Browser: Chrome, Firefox, and Safari running on macOS Version 10.12.3.

[shawnajean]

Hey there! 👋 This actually has to do with URL requirements per the CommonMark spec. CommonMark does not allow for spaces in URLs, so you need to encode those as %20 in order for this to be a valid URL:

[Dr. Ken Lunde](mailto:lunde@adobe.com?subject=[GitHub]%20Source%20Han%20Sans)

Dr. Ken Lunde

You can review CommonMark's definition of a URL (link destination) here:

https://github.github.com/gfm/#link-destination

[kenlunde]

Thank you!

[alexdeborba]

Thank you for posting this.

I was here battling to figure out how to add support e-mail to the README.md

[emersonpessoa01]

Thank you!! because of your explanation. Helped me make this link:

general code:
<a href="mailto:emersonpess011108@gmail.com?"><img src="https://img.shields.io/badge/gmail-%23DD0031.svg?&style=for-the-badge&logo=gmail&logoColor=white"/></a>

[moroz69off]

Thank you!

shawnajean, you best in hub!

It's a shame that I didn't guess myself, because in web addresses we always write% 20

I would recommend the extension to other friends - VS-extension (If you are using Visual Studio)

And THIS EDITHOR (A little harder to customize for yourself, but a VERY POWERFUL md-editor)

[emersonpessoa01]

Thanks for the sugestion. I hadn't seen such a powerful Markdown tool yet. An excellent choice to study! Em sáb., 10 de abr. de 2021 às 19:59, Yuri Morozov ***@***.***> escreveu:

…

Thank you! *shawnajean*, you best in hub! I would recommend the extension to other friends - VS-extension <https://marketplace.visualstudio.com/items?itemName=MadsKristensen.MarkdownEditor> *(If you are using Visual Studio)* And THIS EDITHOR <https://pandao.github.io/editor.md/en.html> *(A little harder to customize for yourself, but a VERY POWERFUL md-editor)* — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#1030 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AOOSITDQ3BT2CM7NQOONMVDTIDJ45ANCNFSM4DEW3YCQ> .