---
name: "hfst-pmatch2fst"
section: "1"
platform: "linux"
package: "hfst"
version: "3.16.2-1+b1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/hfst-pmatch2fst"
---

# hfst-pmatch2fst(1)

\=Compile regular expressions into transducer(s)

## NAME

hfst-pmatch2fst - =Compile regular expressions into transducer(s)

## SYNOPSIS

**hfst-pmatch2fst** \[*OPTIONS*...\] \[*INFILE*\]

## DESCRIPTION

Compile regular expressions into transducer(s)

-

  (Experimental version)

### Common options:

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

  Print help message

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

  Print version info

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

  Print verbosely while processing

- **-q**, **--quiet**

  Only print fatal erros and requested output

- **-s**, **--silent**

  Alias of **--quiet**

### Input/Output options:

- **-i**, **--input**=*INFILE*

  Read input transducer from INFILE

- **-o**, **--output**=*OUTFILE*

  Write output transducer to OUTFILE

### String and format options:

- **-e**, **--epsilon**=*EPS*

  Map EPS as zero

- **--flatten**

  Compile in all RTNs

- **--cosine-distances**

  When compiling Like() operations, include cosine distance info

If OUTFILE or INFILE is missing or -, standard streams will be used. If EPS is not defined, the default representation of 0 is used Weights are currently not implemented.

## EXAMPLES

- echo "Define TOP

  UppercaseAlpha Alpha\* LC({professor}) EndTag(ProfName);" \| hfst-pmatch2fst

-

  create matcher that tags "professor Chomsky" as "professor \<ProfName\>Chomsky\</ProfName\>"

## REPORTING BUGS

Report bugs to \<hfst-bugs@helsinki.fi\> or directly to our bug tracker at: \<https://github.com/hfst/hfst/issues\>

hfst-pmatch2fst home page: \<https://github.com/hfst/hfst/wiki/Pmatch2Fst\>\
 General help using HFST software: \<https://github.com/hfst/hfst/wiki\>

## COPYRIGHT

Copyright © 2017 University of Helsinki, License GPLv3: GNU GPL version 3 \<http://gnu.org/licenses/gpl.html\>\
 This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.