Augmented BNF for Syntax Specifications: ABNF
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From: The IESG <email@example.com> To: IETF-Announce:; Cc: Internet Architecture Board <firstname.lastname@example.org>, RFC Editor <email@example.com>, drums mailing list <firstname.lastname@example.org>, drums chair <email@example.com> Subject: Protocol Action: 'Augmented BNF for Syntax Specifications: ABNF' to Draft Standard The IESG has approved the following document: - 'Augmented BNF for Syntax Specifications: ABNF ' RFC 2234 as a Draft Standard This document is the product of the Detailed Revision/Update of Message Standards Working Group. The IESG contact persons are Scott Hollenbeck and Ted Hardie.
Technical Summary Internet technical specifications often need to define a format syntax and are free to employ whatever notation their authors deem useful. Over the years, a modified version of Backus-Naur Form (BNF), called Augmented BNF (ABNF), has been popular among many Internet specifications. It balances compactness and simplicity, with reasonable representational power. In the early days of the Arpanet, each specification contained its own definition of ABNF. This included the email specifications, RFC733 and then RFC822 which have come to be the common citations for defining ABNF. The current document separates out that definition, to permit selective reference. Predictably, it also provides some modifications and enhancements. Working Group Summary Multiple IETF last call comments were received in favor of advancing the document to draft standard status. There were no last call comments received that objected to advancing the document. There are errata documented for this RFC that need to be incorporated. Protocol Quality Scott Hollenbeck has reviewed the spec for the IESG. RFC Editor Note Please incorporate the documented errata for RFC 2234 with the exception of the item listed for section 3.9.