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FISH_INDENT(1) fish-shell FISH_INDENT(1)


fish_indent - indenter and prettifier


fish_indent [OPTIONS] [FILE...]


fish_indent is used to indent a piece of fish code. 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 Debugging in 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.


2021, fish-shell developers

November 19, 2021 version