---
name: "frown"
section: "1"
platform: "linux"
package: "frown"
version: "0.6.2.3-4"
release: "Debian 9 (Stretch)"
platforms: ["linux"]
url: "https://new.carta.tech/frown"
---

# frown(1)

an LALR(k) parser generator for Haskell 98

## NAME

frown - an LALR(k) parser generator for Haskell 98

## SYNOPSIS

**frown** \[ *options* ... \] *file*.\[i\]g ...

## DESCRIPTION

- **-b**, **--backtrack**

  generate a backtracking parser

- **-c**\[**compact**\|**gvstack**\|**stackless**\|**standard**\], **--code**\[**=compact**\|**gvstack**\|**stackless**\|**standard**\]

  select output format

- **--copying**

  display details of copying

- **-d**, **--debug**

  emit debugging information

- **-e**, **--expected**

  pass a list of expected terminals to ‘frown’

- **-g**, **--ghc**

  use GHC extensions

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

  print this information

- **-i**, **--info**

  put additional information into generated file

- **-k***n*, **--lookahead=***n*

  use *n* tokens of lookahead

- **-l**, **--lexer**

  use a monadic lexer (‘get :: M Terminal’)

- **-n**, **--noinline**

  generate NOINLINE pragmas

- **-O**, **--optimize**

  optimize parser

- **-p***n*, **--pagewidth=***n*

  use the specified pagewidth *n* for pretty printing

- **--prefix=***string*

  use the given *string* as prefix for frown generated variables

- **-s**\[**mono**\|**poly**\], **--signature**\[**=mono**\|**poly**\]

  add type signatures

- **--suffix=***string*

  use the given *string* as suffix for frown generated variables

- **-t**, **--trace**

  insert calls to tracing routines (‘shift’, ‘reduce’ and ‘accept’)

- **-v**, **--verbose**

  be verbose

- **--version**

  print version information

- **--warranty**

  display details of warranty

## COPYRIGHT

© 2002 – 2005 Ralf Hinze

This package is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License (version 2) as published by the Free Software Foundation.

This package is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this package; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA

## AUTHOR

This manual page was written by Arjan Oosting \<arjanoosting@home.nl\> for the Debian system (but may be used by others).