Support for OSC 8 hyperlinks

[psethwick]

Supporting info: osc 8 gist
Support in other terminals

As with many such things, I'm not sure a specification actually exists.

short version:
The result is equivalent to this HTML link: This is a link

printf '\e]8;;http://example.com\e\\This is a link\e]8;;\e\\\n'

[matu3ba]

current output:

warning(osc): invalid OSC command: 8;;
...
warning(osc): invalid OSC command: 8;;http://example.com
warning(osc): invalid OSC command: 8;;
...
warning(osc): invalid OSC command: 8;;

[mitchellh]

I’m considering this a duplicate of #29. Thanks, it’ll come eventually 😄

[ruudk]

Now that #29 is closed because limited support was added in #968, should we re-open this issue to track it? It's currently not possible to do these type of hyperlinks (with custom title).

[gpanders]

@ruudk See #1197.