indent (Unix)

indent is a Unix utility that reformats C and C++ code in a user-defined indentation style and coding style. Support for C++ code is minimal.[1]

indent
Original author(s)David Willcox
Developer(s)David Ingamells, Carlo Wood, Joseph Arceneaux, Jim Kingdon, John Bridges
Initial releaseNovember 1976 (1976-11)
Stable release
GNU: 2.2.13 / March 20, 2023 (2023-03-20)
Repository
Written inC
Operating systemCross-platform
Typesource-code-reformat tool
LicenseGNU: GPLv3
WebsiteGNU: gnu.org/software/indent/

The original version of indent was written by David Willcox at the University of Illinois in November 1976. It was incorporated into 4.1BSD in October 1982.[2] GNU indent was first written by Jim Kingdon in 1989. The command is available as a separate package for Microsoft Windows as part of the UnxUtils collection of native Win32 ports of common GNU Unix-like utilities.[3]

Examples of usage

The following command

$ indent -st -bap -bli0 -i4 -l79 -ncs -npcs -npsl -fca -lc79 -fc1 -ts4 some_file.c

indents some_file.c in a style resembling BSD/Allman style and writes the result to the standard output.

GNU indent

GNU indent is the GNU Project's version of indent. A different indentation style, the GNU style, is used by default.[4]

GUI
  • UniversalIndentGUI

References
  1. "indent: Indent and Format C Program Source". www.gnu.org. Retrieved 2019-08-16.
  2. Dickey, Thomas (2017). "CINDENT - C-language formatter". Invisible Island. Retrieved 2019-04-22.
  3. "Native Win32 ports of some GNU utilities". unxutils.sourceforge.net.
  4. GNU Indent Manual


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