Marco Burstein 6f57cd4d23 upload: Use a placeholder when uploading. ...

Use the placeholder `[uploading file]()` when uploading before the
upload has completed. This behavior prevents an image from being
improperly placed when typing after starting an upload. This is based
on GitHub's handling of image uploading.

Also, add tests to the `upload` Node tests and update existing tests to
account for the new behavior.

Fix #10305.

2018-08-26 23:33:24 -07:00

6.8 KiB

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