[det]ansi_hyperlink(+Stream,
+Location)OSC 8
escape sequence. Location is one of
- An absolute URL
- An atom (interpreted as a file name)
- A term
File:Line - A term
File:Line:Column
There is no official standard for encoding the Line and Column. We emit
``file://AbsFileName[#Line[:Column]]``
Both Line and Column count from 1, as in the
messages we print and as used by e.g., rg --hyperlink-format=....
Note that a capital L before the line, as used by GitHub,
is accepted by Epilog as well.
The sequence is emitted if and only if the Prolog flag
hyperlink_term is true and Stream
has the property tty(true).
ansi_format/4 is
guarded the same way for color_term, so that a message
captured using with_output_to/2
is plain text.