Steps to replicate the issue (include links if applicable):
When you use the | character in Page forms, it throws an error.
What happens?:
Unable to save the page, error thrown saying a | is present.
What should have happened instead?:
Should save the page. Would it be possible to strip pipes from the code?
Software version (skip for WMF-hosted wikis like Wikipedia):
Other information (browser name/version, screenshots, etc.):
