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20:02:47 <RRSAgent> logging to http://www.w3.org/2010/09/01-webfonts-irc
20:02:49 <trackbot> RRSAgent, make logs world
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20:02:51 <trackbot> Zakim, this will be 3668
20:02:51 <Zakim> ok, trackbot; I see IA_Fonts()4:00PM scheduled to start 2 minutes ago
20:02:52 <trackbot> Meeting: WebFonts Working Group Teleconference
20:02:52 <trackbot> Date: 01 September 2010
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20:06:34 <John> John has joined #webfonts
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20:07:10 <John> Regret: not able to phone in today. Will try to follow IRC for a while and comment as appropriate.
20:11:29 <jfkthame> topic: going through Vlad's draft presentation for ATypI for any comments/suggestions
20:14:55 <erik> I have the email with attachment
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20:28:01 <Vlad> discussed the slides sent via email, no changes - please submit your comments over email
20:33:07 <erik> topic: Jonathan proposes to drop the requirement to verify the checksums.
20:34:41 <erik> Sylvain: is there data that shows fonts will fail on one platform but not on another based on faulty checksums?
20:35:27 <erik> Jonathan: WOFF is a container. Why single out one detail of the OFF format and make it a conformance item?
20:36:06 <erik> Vlad: Firefox checked the checksums?
20:36:57 <erik> Jonathan; any structurally sound SFNT file should be able to be packed. Regardless of the contents. 
20:37:30 <erik> Vlad: checksum helps to establish the file is sound
20:39:17 <erik> Sergey: other structural checks are essential for making sure we can be lossless
20:39:57 <erik> Sergey: validating checksums is one of the steps
20:41:28 <erik> Sylvain: I don't see why
20:42:51 <erik> Sergey: woff creation tool should validate sfnt structure
20:43:25 <erik> Sergey: validating checksum is part of that
20:44:19 <erik> Christopher: do we want woff creation tools to validate that it is a valid sfnt?
20:45:59 <erik> Vlad: spec mentions "sfnt" many times
20:46:15 <cslye> Are there security concerns? Is that a reason to ensure a valid sfnt?
20:47:34 <erik> <scribe is struggling a bit>
20:48:11 <erik> vlad: we have to make sure the input is structurally sound
20:48:58 <erik> sergey: if UA does partial decompression, it can't use the checksums
20:49:56 <erik> jonathan: define - what is a valid woff file?
20:51:09 <erik> vlad: recap: agreement on checking the input file on structural integrity
20:51:26 <erik> vlad: offsets proper values, and so on
20:51:48 <erik> vlad: still split on whether checksums are part of the structure or part of the semantics
20:52:30 <erik> julio: if we go down this path / some fonts developed for corporate use might not work
20:53:02 <erik> julio: there may be inoffensive problems in a font 
20:54:07 <erik> vlad: if a font fails, user should contact the maker and have it fixed
20:54:20 <erik> julio: maker might not be available
20:56:03 <erik> sergey; spec offers a choice: reject or make it work
20:56:36 <erik> julio: worried specifically about corporate fonts
20:58:03 <erik> vlad: checking is within scope; which actions to take it not in scope
20:59:15 <jfkthame> so if a woff file contains incorrect table checksums, is it a valid file or not?
20:59:43 <erik> vlad, out of time
20:59:43 <Julio> I have to check-out - thanks guys
21:00:55 <erik> jonathan: still fuzzy about the definition of what is a valid woff file
21:02:51 <erik> jonathan: does the definition include the checksums? 
21:04:34 <erik> sergey: we can say a valid file has a valid checksum. if checksum is incorrect: UA behaviour is undefined
21:05:07 <Vlad> Meeting: WebFonts WG
21:05:23 <Vlad> Chair: Vlad
21:05:41 <Vlad> Scribe: Erik
21:05:45 <erik> John had to leave early
21:05:50 <Vlad> ScribeNick: erik
21:06:08 <Vlad> Agenda: http://lists.w3.org/Archives/Public/public-webfonts-wg/2010Aug/0068.html
21:06:48 <erik> christopher: end the meeting and continue online?
21:07:46 <erik> vlad: next week I will be at atypi
21:08:16 <erik> vlad: volunteers for replacing the chair, or postponing the call
21:08:43 <erik> christopher: we could use the list better - better documented in email
21:09:37 <erik> http://www.w3.org/Fonts/WOFF-FAQ
21:09:52 <erik> http://typophile.com/node/73465
21:10:43 <erik> wrapping up.
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21:11:37 <Vlad> rrsagent, create minutes
21:11:37 <RRSAgent> I have made the request to generate http://www.w3.org/2010/09/01-webfonts-minutes.html Vlad
21:12:55 <erik> night
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