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(emacs)Program Indent

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Indentation for Programs
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   The best way to keep a program properly indented is to use Emacs to
reindent it as you change it.  Emacs has commands to indent properly
either a single line, a specified number of lines, or all of the lines
inside a single parenthetical grouping.

Basic Indent

Indenting a single line.

Multi-line Indent

Commands to reindent many lines at once.

Lisp Indent

Specifying how each Lisp function should be indented.

C Indent

Extra features for indenting C and related modes.

Custom C Indent

Controlling indentation style for C and related modes.

   Emacs also provides a Lisp pretty-printer in the library `pp'.  This
program reformats a Lisp object with indentation chosen to look nice.