I sometimes want simple, single-line tracebacks so I can pipe them en masse to other tools (sort, uniq, etc). In the past, I've hacked up gentraceback and friends to generate just whitespace-separated filename and line number, roughly like:

cmd/compile/internal/gc/syntax.go:48 cmd/compile/internal/gc/dcl.go:45 cmd/compile/internal/gc/subr.go:910234 cmd/compile/internal/gc/main.go:23 cmd/compile/main.go:22

I'm perfectly happy to just carry about my patch as needed, but I thought I'd check whether there's enough interest that this should be given more support, perhaps via a GOTRACEBACK value. Input requested.