Oh. I find out why you report this bug.
Because our Url has lots of '_' , so we remove '_' , just allow '*' and '**'. Check . We are try to find a way to improve this.
Um, sorry, I don’t understand “**our URL** has lots of ‘_’ “,
it was working with double underline for many days, until last week (or so).
When I check with your linked “Markdown editor and viewer” the __double underscores__ work ...
Our URL is `https://easyeda.com/bbs_view_657.htm` , If the user just put the URL in the textArea, It will be https://easyeda.com/bbs*view*657.htm . I think remove `_` support is not good. Maybe we will add `_` later.
>it was working with double underline for many days, until last week (or so).
:), Yes We just remove that last week.
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