Variable: indent-line-function

indent-line-function is a variable defined in indent.el.gz.

Documentation

Function to indent the current line.

This function will be called with no arguments. If it is called somewhere where it cannot auto-indent, the function should return noindent to signal that it didn't. Setting this function is all you need to make TAB indent appropriately. Don't rebind TAB unless you really need to.

View in manual

Probably introduced at or before Emacs version 22.1.

Source Code

;; Defined in /usr/src/emacs/lisp/indent.el.gz
(defvar indent-line-function 'indent-relative
  "Function to indent the current line.
This function will be called with no arguments.
If it is called somewhere where it cannot auto-indent, the function
should return `noindent' to signal that it didn't.
Setting this function is all you need to make TAB indent appropriately.
Don't rebind TAB unless you really need to.")