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RFC Baby Steps

RFC Baby Steps. Adding UTF-8 Support. Tony Hansen IETF 83 March 27, 2012. Current Restrictions. You all know this Line Printer Image 66 lines per page 72 characters per line Form feed page separators No overstrikes (no backspaces) ASCII (7-bit) only.

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RFC Baby Steps

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  1. RFC Baby Steps Adding UTF-8 Support Tony Hansen IETF 83 March 27, 2012

  2. Current Restrictions You all know this Line Printer Image • 66 lines per page • 72 characters per line • Form feed page separators • No overstrikes (no backspaces) • ASCII (7-bit) only Tony Hansen

  3. Alternate VersionsCurrently Supported Alternate Renderings • Postscript • PDF • HTML Alternate Source Formats • XML • Nroff Tony Hansen

  4. Unicode Support Plethora of formats • UCS-2, UCS-4, UTF-16, UTF-8 • BE vs LE, Byte Order Mark (BOM) • UTF-8 renders ASCII as ASCII and uses 8th bit for non-ASCII • UTF-8 is arguably most common Document Representation Used by IETF • Uxxxx, like U2265 for GREATER THAN OR EQUAL TO Tony Hansen

  5. Several Proposals in the Past Redefine .txt files to allow UTF-8 everywhere Allow .txt files to allow UTF-8 in some places • draft-hoffman-utf8-rfcs-06 (-00 in 2005, -06 in 2010) Tony Hansen

  6. A Modest Proposal Add another source format that permits UTF-8 • File extension of .utf8 (.utf ?) Generate .txt from .utf8 files Represent those Unicode characters in the .txt version as U<####> • Does not conflict with current code point descriptions in any RFC or I-D • Need to relax line length restriction in .txt versions Complementary to other issues (HTML, PDF, …) Allows .utf files to be searched just like .txt files Provides a test bed for possibly redefining .txt in the future Tony Hansen

  7. Tool Changes Xml2rfc, microsoft word template, nroffedit, etc. to generate UTF-8 files I-D upload accept .utf8 files as alternate input format • Could generate .txt versions directly from .utf8 • Alternately, the .txt input could check for UTF-8 input and store those as .utf8 and generate the .txt equivalents tools.ietf.org/html would look for .utf8 files Tony Hansen

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