Browse Prior Art Database

The Text/Plain Format Parameter (RFC2646)

IP.com Disclosure Number: IPCOM000003234D
Original Publication Date: 1999-Aug-01
Included in the Prior Art Database: 2000-Sep-13
Document File: 11 page(s) / 27K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

R. Gellens: AUTHOR

Abstract

Interoperability problems have been observed with erroneous labelling of paragraph text as Text/Plain, and with various forms of "embarrassing line wrap." (See section 3.)

This text was extracted from a ASCII Text document.
This is the abbreviated version, containing approximately 11% of the total text.

Network Working Group R. Gellens, Editor

Request for Comments: 2646 Qualcomm

Updates: 2046 August 1999

Category: Standards Track

The Text/Plain Format Parameter

Status of this Memo

This document specifies an Internet standards track protocol for the

Internet community, and requests discussion and suggestions for

improvements. Please refer to the current edition of the "Internet

Official Protocol Standards" (STD 1) for the standardization state

and status of this protocol. Distribution of this memo is unlimited.

Copyright Notice

Copyright (C) The Internet Society (1999). All Rights Reserved.

Table of Contents

1. Abstract . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2. Conventions Used in this Document . . . . . . . . . . . . . 2

3. The Problem . . . . . . . . . . . . . . . . . . . . . . . . 2

3.1. Paragraph Text . . . . . . . . . . . . . . . . . . . . 3

3.2. Embarrassing Line Wrap . . . . . . . . . . . . . . . . . 3

3.3. New Media Types . . . . . . . . . . . . . . . . . . . . 4

4. The Format Parameter to the Text/Plain Media Type . . . . . 4

4.1. Generating Format=Flowed . . . . . . . . . . . . . . . 5

4.2. Interpreting Format=Flowed . . . . . . . . . . . . . . . 6

4.3. Usenet Signature Convention . . . . . . . . . . . . . . 7

4.4. Space-Stuffing . . . . . . . . . . . . . . . . . . . . . 7

4.5. Quoting . . . . . . . . . . . . . . . . . . . . . . . . 8

4.6. Digital Signatures and Encryption . . . . . . . . . . . 9

4.7. Line Analysis Table . . . . . . . . . . . . . . . . . . 10

4.8. Examples . . . . . . . . . . . . . . . . . . . . . . . . 10

5. ABNF . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

6. Failure Modes . . . . . . . . . . . . . . . . . . . . . . . 11

6.1. Trailing White Space Corruption . . . . . . . . . . . . 11

7. Security Considerations . . . . . . . . . . . . . . . . . . 12

8. IANA Considerations . . . . . . . . . . . . . . . . . . . . 12

9. Internationalization Considerations . . . . . . . . . . . . 12

10. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . 12

11. References . . . . . . . . . . . . . . . . . . . . . . . . . 13

12. Editor's Address . . . . . . . . . . . . . . . . . . . . . 13

13. Full Copyright Statement . . . . . . . . . . . . . . . . . . 14

1. Abstract

Interoperability problems have been observed with erroneous labelling

of paragraph text as Text/Plain, and with various forms of

"embarrassing line wrap." (See section 3.)

Attempts to deploy new media types, such as Text/Enriched [RICH] and

Text/HTML [HTML] have suffered from a lack of backwards compatibility

and an often hostile user reaction at the receiving end.

What is required is a format which is in all significant ways

Text/Pl...