The lustre sources are intending to follow linux kernel coding conventions.
Editors can be very helpful in this, when they understand the conventions.
They can make themselves troublesome when they do not.

It is fairly easy to customize emacs to be helpful, without adding the
chicken scratches (mode lines) that tell emacs how to treat C program
syntactic elements.

Lustre can easily accommodate this by adding a $top/build/lustre-emacs.el
and a $top/.dir-locals.el file to the source tree. The "lustre-emacs.el"
would define the customization functions and the ".dir-locals.el" would
specify using them for c-mode and sh-script-mode modes. This avoids
polluting file content with coding style scratchings.

There might be something similar for vi, but I wouldn't know.

===== .dir-locals.el:

( (nil . ( (indent-tabs-mode . t) (fill-column . 72) )

)

(c-mode . ( (c-file-style . "linux-tabs-only") )

)

)