SLNX is a new XML-based file-format for .NET based solutions, replacing

the older proprietary SLN file-format.

Unlike SLN-files, it is merge-friendly and expected to become the new

the de-facto standard for working with .NET projects. This commit adds

support for SLNX-schema to nxml-mode.

When opening SLNX-files in Emacs and activating nxml-mode, no special

schema-validation or completion/assistance is provided.

Attached is a patch which corrects this situation.

(SLNX-files not added to any auto-mode-list, because I couldn't

find where/if that is done in the nxml-mode codebase).

—
Kind Regards
Jostein Kjønigsen