minetest/minetest — pull request #1285 by DavidMikeSimon (2014-05-09 14:14:33+00:00)
Title: Debugging visualization for MapBlock boundaries

Press F8 to see where the the edges of MapBlocks are. Press F8 again to see those boundaries through walls.

Also, I incidentally added an [EditorConfig](http://editorconfig.org/) file.