# Mutli-Character Filter

## Description

Filter which provides access to its controlled sequence or sequences several characters at a time. The difference between a Filter which is Mutli-Character and one which is not is reflected in the specifications of the various Filter refinements. See, e.g., InputFilter and OutputFilter.

## Refinement of

Filter.

## Associated Types

Same as Filter, with the following additional requirements:

Category | A type convertible to `filter_tag` and to `multichar_tag`

## Valid Expressions / Semantics

Same as Filter.

## Models

- The compression and decompression Filters
- `basic_regex_filter`
- `aggregate_filter`
- `symmetric_filter`

Revised 20 May, 2004

© Copyright Jonathan Turkanis, 2004

Distributed under the Boost Software License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)