On Sunday, 10 February 2013 at 18:43:58 UTC, Johannes Pfau wrote:
If you want it to be implemented on linux, probably ask on aFreeDesktop mailing list, freedesktop.org maintains the linux mimedatabase.
On my system (Fedora 18) there's /usr/share/mime/text/x-dsrc.xml that contains these lines:
<sub-class-of type="text/x-csrc"/> <glob pattern="*.d"/>Given that this was installed by default, it seems that someone already made a decision on this.