Variable: indent-tabs-mode

indent-tabs-mode is a customizable and buffer-local variable defined in indent.c.

Documentation

Indentation can insert tabs if this is non-nil.

Probably introduced at or before Emacs version 18.

Key Bindings

Source Code

// Defined in /usr/src/emacs/src/indent.c
  DEFVAR_BOOL ("indent-tabs-mode", indent_tabs_mode,
	       doc: /* Indentation can insert tabs if this is non-nil.  */);