Custom scheme HTML anchor or Link visualization support

Issue Summary

Anchor tags created manually with text visualization and HTML support, or Link visualization used for non-http(s) schemes are not clickable - the HREF attribute is filtered out.

We want to enable users to open local applications from a link, which requires a custom scheme. However, it seems like Redash treats the scheme specially and filters out our custom scheme. Is there a way to disable this behaviour?

Technical details:

  • Redash Version: 6
  • Browser/OS: Chrome 86 + MacOS 10.14