jeremy elliott

I agree, but for a different reason.  In mediawiki, it makes it very clear, via coloring, when i link does not yet exist, (and they also uses a visual cue for links that are internal vs. external)....

i've pared it down to the basics in https://multimarkdown.zendesk.com/hc/en-us/requests/161 , and it doesn't work with just the simple call.