.. _cmd-fish_indent:
.. program::fish_indent

fish_indent - indenter and prettifier
=====================================

Synopsis
--------

**fish_indent** [*OPTIONS*] [*FILE*...]


Description
-----------

:program:`fish_indent` is used to indent a piece of fish code. :program:`fish_indent` reads commands from standard input or the given filenames and outputs them to standard output or a specified file (if ``-w`` is given).

The following options are available:

- ``-w`` or ``--write`` indents a specified file and immediately writes to that file.

- ``-i`` or ``--no-indent`` do not indent commands; only reformat to one job per line.

- ``-c`` or ``--check`` do not indent, only return 0 if the code is already indented as fish_indent would, the number of failed files otherwise. Also print the failed filenames if not reading from stdin.

- ``-v`` or ``--version`` displays the current fish version and then exits.

- ``--ansi`` colorizes the output using ANSI escape sequences, appropriate for the current $TERM, using the colors defined in the environment (such as ``$fish_color_command``).

- ``--html`` outputs HTML, which supports syntax highlighting if the appropriate CSS is defined. The CSS class names are the same as the variable names, such as ``fish_color_command``.

- ``-d`` or ``--debug=DEBUG_CATEGORIES`` enable debug output and specify a pattern for matching debug categories. See :ref:`Debugging <debugging-fish>` in :ref:`fish <cmd-fish>` (1) for details.

- ``-o`` or ``--debug-output=DEBUG_FILE`` specify a file path to receive the debug output, including categories and ``fish_trace``. The default is stderr.

- ``--dump-parse-tree`` dumps information about the parsed statements to stderr. This is likely to be of interest only to people working on the fish source code.