RE: replace-regexp, the byte-compiler, docstrings, and suggestions

[Drew Adams]

> Only with the Makefile stuff I have to invert the
> current situation to instead have the Makefiles
> actually keep indent-tabs-mode as t. Ha ha, and to
> think some people think programming is difficult!

C-h v indent-tabs-mode

,----
| indent-tabs-mode is a variable defined in `C source code'.
| Its value is nil
| Original value was t
| 
|   Automatically becomes buffer-local when set.
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

|   This variable is safe as a file local variable if its value
|   satisfies the predicate `booleanp'.
| 
| Documentation:
| Indentation can insert tabs if this is non-nil.
| 
| You can customize this variable.
`----

Use `setq-default' to set the value you want in most modes.
Set the value to non-nil on whatever mode hook you like.

See (emacs) `Just Spaces' and (emacs) `Locals'.
See (elisp) `Primitive Indent'