bug#28081: way to change line number separator from colon to space?

[Marcel Partap]

Hi,
is there any way to make grep place a space before and after the line number 
instead of a colon?
> *./src/ui_download_manager.cc:36:namespace cwidget
With many terminals not including the : as a word separator SHIFT+double click 
on the filename selects
> filename:line:
so one has to manually select the filename. So much unneccessary work 😁

#Best Regards/MPartap