If I paste an html link with a href that doesn't start with http:// in an html editor in Chrome or Firefox, then result is not the same. Chrome keep the href attribute but Firefox removes it.
So if I paste a link (which has this source code <a href="zotero://open-pdf/0_123456" target="_blank">Open PDF</a>) in the HTML mode (not the source code mode) of an HTML editor in Chrome, and then them switch to the source code mode, I see the exact them source code as above. But if I paste the same link in an HTML editor in Firefox, I end up with this source code:
<a target="_blank">Open PDF</a>
The test can be done with Quackit.com. When I start Firefox in Safe Mode, then the href="zotero://open-pdf/0_123456" isn't removed.
How can I paste a link in an HTML editor in Firefox when its href doesn't contain an http://?
More background: I am creating this link with a python script based on HtmlClipboard
I tried all the solution on that page but without success. My issue doesn't seem to be the same. I don't have any trouble opening a local link with firefox: if I paste zotero://open-pdf/0_123456 in the url bar, firefox open the pdf. I have trouble pasting the html link in an html editor.
After all, it wasn't caused by Firefox but one of my extension because the problem disappears when Firefox is in safe-mode (on Windows, Windows + R and enter firefox -safe-mode). This doesn't resolve my problem, but at least it answers this question.
Thanks to jscher2000 for pointing that to me.