wget2 | Strange escaping in message "Saving $URL" (#582)

[Roland Illig (@roland.illig)]

Roland Illig created an issue: https://gitlab.com/gnuwget/wget2/-/issues/582



wget.c says:
> `info_printf(_("Saving '\033]8;;file://%s%s\033\\%s\033]8;;\033\\'\n"),`

* The `\\'` at the end looks suspicious, as if the backslash were too much.
* The double semicolons look strange, why would they be needed?
* The semicolons by themselves look strange.

Running the following on mintty on Cygwin produces:

~~~shell
$ printf "Saving '\033]8;;file://%s%s\033\\%s\033]8;;\033\\'\n" host file actual
Saving 'actual
~~~

Is this supposed to be some form of hyperlinking? If so, in which environments 
does this work?

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