I’ve found a few instances in which Brid.gy will apparently fail to send a webmention (and/or fail to find a target) when the original URL contains an emoji(s). I’d suspect it’s a quirky encoding issue of some sort. I’m sure I’ve seen this issue before on Instagram where it’s probably more likely as the result of emojis in Instagram “titles” when using PESOS methods.
When I subsequently remove the emoji from the permalink, and reprocess Bridgy then has no problem finding the URL and sending the webmention. So at least there’s a “fix” on the user’s side for those experiencing this issue, but only if they’re aware it exists and have the means of executing it.
Example of failed webmention:
(I’ll note that it’s also got a fragment # in the URL, but don’t think this is a part of the issue)
Syndicated copy that was liked: https://twitter.com/ChrisAldrich/status/1129124049068498944#favorited-by-14591484
Bridgy Log: https://brid.gy/log?start_time=1558056830&key=aglzfmJyaWQtZ3lyTAsSCFJlc3BvbnNlIj50YWc6dHdpdHRlci5jb20sMjAxMzoxMTI5MTI0MDQ5MDY4NDk4OTQ0X2Zhdm9yaXRlZF9ieV8xNDU5MTQ4NAw
Example of previously failed webmention that ultimately went through following emoji removal:
Syndicated copy: https://twitter.com/ChrisAldrich/status/1129124049068498944#favorited-by-19844672
Bridgy Log: https://brid.gy/log?start_time=1558714459&key=aglzfmJyaWQtZ3lyTAsSCFJlc3BvbnNlIj50YWc6dHdpdHRlci5jb20sMjAxMzoxMTI5MTI0MDQ5MDY4NDk4OTQ0X2Zhdm9yaXRlZF9ieV8xOTg0NDY3Mgw
Another potential example from Instagram
Done via PESOS from Instagram which I’m sure missed webmentions (though too far back to find the specific logs):