[Bug c/87488] hyperlink filenames in diagnostics

[egmont at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87488

--- Comment #20 from Egmont Koblinger <egmont at gmail dot com> ---
GNOME Terminal's behavior mainly depends on VTE. Hyperlinks are supported since
VTE 0.50 and a corresponding GNOME Terminal 3.26.

VTE 0.48.2 and 0.46.3, and newer versions within these stable series silently
ignore OSC 8.

VTE 0.48.[01], 0.46.[012] and older stable series emit garbage.

As far as I know, an up-to-date RHEL7 contains VTE 0.52 (see
https://bugzilla.redhat.com/show_bug.cgi?id=1569801). I cannot verify this, nor
can comment about older RHELs.

Older distros are also more likely to ship an older Terminator, Xfce4-Terminal,
Guake, LXterminal etc. which might use the GTK2-based VTE 0.28 (which also
emits garbage), rather than the as-of-then-current GTK3-based VTE 0.4x-0.5x.
You'd need to manually check the exact terminal packages and their dependencies
to get the whole picture.

I can only guess that distros would probably appreciate such a compile-time
kill switch.