auto-start-reverse value not supported for orient attribute of <marker>

External Issue #12463745


Ana T.
Jun 23, 2017
This issue is public.
Found in
  • Microsoft Edge
Found in build #
Reported by 3 people

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Steps to reproduce

Per the SVG 2 spec, this allows us to use the same marker for the start and end.

Otherwise, we need to create two almost identical markers, one for the start and the other for the end of our path. This bloats the SVG and makes it less maintainable.

Simple test using orient='auto-start-reverse' (works in Chrome and Firefox):

Actual result in Edge: doesn’t even degrade nicely, falls back to what it would look like without the orient attribute.


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    Comments and activity

    • By the way, orient="auto-start-reverse" also works in WebKit/Safari.

      FYI, I’ve added a JS test for support to the pen (linked above), but it’s not ideal. Unfortunately, the SVG DOM interfaces weren’t updated with the new value in SVG 2, so what you’re actually testing is whether the auto-start-reverse value in the attribute successfully switched the DOM value to SVG_MARKER_ORIENT_UNKNOWN.

    • Changed Steps to Reproduce

    • Microsoft Edge Team

      Changed Assigned To to “Steven K.”

      Changed Status to “External”

    • Hey Ana, thanks for filing the issue - feature requests are done on our UserVoice page - here is the one for SVG 2. We have a deliverable for this so I have duped it to that.

    • This issue has been resolved External. This means this issue may require a new feature to be implemented or other work that is more significant than a typical bug. You may be able to find more information on this issue by searching for related features on and

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