---
name: "rust-fmt"
section: "1"
platform: "linux"
package: "rust-coreutils"
version: "0.0.30-2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/rust-fmt"
---

# rust-fmt(1)

Reformat paragraphs from input files (or stdin) to stdout.

## NAME

fmt - Reformat paragraphs from input files (or stdin) to stdout.

## SYNOPSIS

**fmt** \[**-c**\|**--crown-margin**\] \[**-t**\|**--tagged-paragraph**\] \[**-m**\|**--preserve-headers**\] \[**-s**\|**--split-only**\] \[**-u**\|**--uniform-spacing**\] \[**-p**\|**--prefix**\] \[**-P**\|**--skip-prefix**\] \[**-x**\|**--exact-prefix**\] \[**-X**\|**--exact-skip-prefix**\] \[**-w**\|**--width**\] \[**-g**\|**--goal**\] \[**-q**\|**--quick**\] \[**-T**\|**--tab-width**\] \[**-h**\|**--help**\] \[**-V**\|**--version**\] \[*FILES*\]

## DESCRIPTION

Reformat paragraphs from input files (or stdin) to stdout.

## OPTIONS

- **-c**, **--crown-margin**

  First and second line of paragraph may have different indentations, in which case the first line's indentation is preserved, and each subsequent line's indentation matches the second line.

- **-t**, **--tagged-paragraph**

  Like -c, except that the first and second line of a paragraph \*must\* have different indentation or they are treated as separate paragraphs.

- **-m**, **--preserve-headers**

  Attempt to detect and preserve mail headers in the input. Be careful when combining this flag with -p.

- **-s**, **--split-only**

  Split lines only, do not reflow.

- **-u**, **--uniform-spacing**

  Insert exactly one space between words, and two between sentences. Sentence breaks in the input are detected as \[?!.\] followed by two spaces or a newline; other punctuation is not interpreted as a sentence break.

- **-p**, **--prefix**=*PREFIX*

  Reformat only lines beginning with PREFIX, reattaching PREFIX to reformatted lines. Unless -x is specified, leading whitespace will be ignored when matching PREFIX.

- **-P**, **--skip-prefix**=*PSKIP*

  Do not reformat lines beginning with PSKIP. Unless -X is specified, leading whitespace will be ignored when matching PSKIP

- **-x**, **--exact-prefix**

  PREFIX must match at the beginning of the line with no preceding whitespace.

- **-X**, **--exact-skip-prefix**

  PSKIP must match at the beginning of the line with no preceding whitespace.

- **-w**, **--width**=*WIDTH*

  Fill output lines up to a maximum of WIDTH columns, default 75. This can be specified as a negative number in the first argument.

- **-g**, **--goal**=*GOAL*

  Goal width, default of 93% of WIDTH. Must be less than or equal to WIDTH.

- **-q**, **--quick**

  Break lines more quickly at the expense of a potentially more ragged appearance.

- **-T**, **--tab-width**=*TABWIDTH*

  Treat tabs as TABWIDTH spaces for determining line length, default 8. Note that this is used only for calculating line lengths; tabs are preserved in the output.

- **-h**, **--help**

  Print help

- **-V**, **--version**

  Print version

- \[*FILES*\]

  ## VERSION

v0.0.30