Annoyingly Slack refuse to create a link with a bookmarklet as content. They do it on purpose - it's not part of a URL validation. I guess it IS a security con

Annoyingly Slack refuse to create a link with a bookmarklet as content. They do it on purpose - it's not part of a URL validation. I guess it IS a security concern to run arbitrary javascript inside the slack app of another user. But makes sharing bookmarklets that way harder.