16:54:42 <RRSAgent> RRSAgent has joined #webfonts
16:54:47 <RRSAgent> logging to https://www.w3.org/2024/02/27-webfonts-irc
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16:59:44 <Vlad> zakim, start meeting
16:59:44 <Zakim> RRSAgent, make logs Public
16:59:46 <Zakim> Meeting: Web Fonts Working Group Teleconference
16:59:59 <Vlad> present+
17:01:58 <Garret> Garret has joined #webfonts
17:04:23 <bberning> bberning has joined #webfonts
17:05:05 <skef> present+
17:05:10 <Chris> Chris has joined #webfonts
17:05:48 <bberning> present+
17:06:19 <Chris> present+
17:06:22 <Garret> present+
17:09:25 <Vlad> zakim, pick a victim
17:09:25 <Zakim> Not knowing who is chairing or who scribed recently, I propose Vlad
17:10:04 <Vlad> Topic: IFT spec review
17:10:21 <Vlad> https://pr-preview.s3.amazonaws.com/w3c/IFT/157/7dd6096...garretrieger:86189fe.html#overview
17:10:30 <Vlad> scribenick: Vlad
17:11:30 <Vlad> Garret: presenting an overview of structural changes to the spec content (see link ^)
17:12:24 <Vlad> Garret: Format 2 isn't in the draft yet but is going to be added soon.
17:13:09 <Vlad> Garret: Additional parts and minor editorial changes will be added too.
17:13:42 <Vlad> Skef: submitted PR with proposed editorial changes
17:14:26 <Chris> Reviewed and approved the proposed editorial changes
17:15:00 <Vlad> Skef: discussing different patch formats and how they should (should not) be combined.
17:15:35 <Vlad> Skef: some formats are "per table" type updates, and some are not - mixing them together doesn't seem to make sense.
17:16:45 <Chris> That table partitioning seems better to me, @skef
17:18:06 <Vlad> Skef: different types of updates will be given different keys (IDs) for glyph type updates vs. generic Brotli patches, this would simplify things.
17:20:35 <Vlad> Garret: makes sense to consider doing this; we do need to consider implications of this for future spec updates.
17:23:26 <Vlad> Continued discussion of IDs for sets of independent and dependent patches.
17:27:48 <Vlad> Additional clarifications in the spec would be needed to describe the relationships between different types of patches.
17:29:47 <Vlad> skef: having different [numbered] formats and then use tags to identify corresponding changes might be a sourcee of confusion, suggestion to unify format numbers and tags used.
17:33:03 <Vlad> Garret: recent changes allow using glyphIDs derived from 'cmap'.
17:36:09 <Vlad> Continued discussion of proposed changes to the IFT spec.
17:36:40 <Vlad> (see also https://pr-preview.s3.amazonaws.com/w3c/IFT/158/6946e39...skef:dcbcaa3.html)
17:38:47 <Vlad> Topic: Adding Encoder Requirements to the IFT spec
17:39:16 <Vlad> (see email thread: https://lists.w3.org/Archives/Public/public-webfonts-wg/2024Feb/0005.html)
17:40:55 <Vlad> skef: Emails exchanged on the WG list articulate some of the concens regarding specifying requirements for IFT encoder
17:41:19 <Vlad> s/concens/concerns/
17:43:22 <Vlad> skef: sometimes, legal questions are raised when fonts licensed using traditional licenses are then used with new technologies developed / introduced after the license was written.
17:44:54 <Vlad> skef: potential source for confusion could be if the use of IFT is considered something that is not traditionally considered a font subset permitted by existing licenses.
17:46:26 <Vlad> skef: adding hard normative requirements for encoder would potentially help aleviate these concerns.
17:48:36 <Vlad> Garret and Skef discussing what set of potential [minimal] spec changes might be sufficient.
17:49:12 <Vlad> ... and where changes from "should" to "must" may be needed.
17:52:46 <Vlad> s/considered a font/seen as a font/
17:55:39 <Vlad> Garret: consider adding requirements that specify existing font vs. font subset relationships: identical rendering results, no changes to font behavior/functionality, etc.
17:56:44 <Vlad> ... and possibly extending a font subset section that defines how subset would work.
18:06:13 <Vlad> See WOFF2 spec (the last two paragraphs of clause 5: https://www.w3.org/TR/WOFF2/#table_format) for reference as to how the effects of processing font data might affect the end result.
18:07:06 <Vlad> Vlad: we probably should consider adding similar statements in the IFT spec w.r.t. subsetting.
18:10:45 <Vlad> Next call: tentatively scheduled on March 19, we may revise the target date based on the progress / agenda topics.
18:10:59 <Vlad> zakim, list attendees
18:10:59 <Zakim> As of this point the attendees have been Vlad, skef, bberning, Chris, Garret
18:11:13 <Vlad> rrsagent, make minutes
18:11:14 <RRSAgent> I have made the request to generate https://www.w3.org/2024/02/27-webfonts-minutes.html Vlad