Nicolas Goaziou <n.goaziou@gmail.com> writes:

> IMO, `org-insert-link' shouldn't hexify links in all situations (if at
> all).

Agreed.

We can first narrow the set of url-hexified links to those matching
`org-link-types-re' (http://, ftp://.)

> Anyway, I can't think of any satisfactory solution at the moment.

See patch.

Of course, there will still be some false positives, because
`org-link-types-re' comprises custom link types, but this is
a step in the right direction IMO.