{"generator":"GNU social 2.0.2-dev","title":"Conversation","totalItems":12,"items":[{"actor":{"id":"https:\/\/chaos.social\/users\/jaseg","displayName":"jaseg","status_net":{"avatarLinks":[{"url":"https:\/\/gnusocial.jp\/avatar\/151477-original-tmp20230720120253.webp","rel":"avatar","type":"image\/webp","width":400,"height":400},{"url":"https:\/\/gnusocial.jp\/avatar\/151477-96-20230726215114.webp","rel":"avatar","type":"image\/webp","width":96,"height":96},{"url":"https:\/\/gnusocial.jp\/avatar\/151477-48-20230726215114.webp","rel":"avatar","type":"image\/webp","width":48,"height":48},{"url":"https:\/\/gnusocial.jp\/avatar\/151477-24-20230726215114.webp","rel":"avatar","type":"image\/webp","width":24,"height":24}],"profile_info":{"local_id":"151477"}},"image":{"url":"https:\/\/gnusocial.jp\/avatar\/151477-96-20230726215114.webp","rel":"avatar","type":"image\/webp","width":96,"height":96},"objectType":"person","summary":"I am doing #electronics, #embedded programming, #python scripting, hardware security and recently some sewing.Email: whatever you like at my domain. I've got a catch-all alias.Pronouns: er\/they","url":"https:\/\/chaos.social\/@jaseg","portablecontacts_net":{"preferredUsername":"jaseg","displayName":"jaseg","note":"I am doing #electronics, #embedded programming, #python scripting, hardware security and recently some sewing.Email: whatever you like at my domain. I've got a catch-all alias.Pronouns: er\/they"}},"content":"

@david_chisnall<\/a> @whitequark<\/a> If you\u2019d implement this in git, it wouldn\u2019t even be the first use of in-tree metadata (see .gitmodules) and it also wouldn\u2019t be the first instance where the output of git log etc. could change after the fact without rewriting history (see branch names). maybe this would actually be worth an RFC in case this hasn\u2019t been proposed before.<\/p>","generator":{"id":"tag:gnusocial.jp,2026-05-19:notice-source:ActivityPub","objectType":"application","status_net":{"source_code":"ActivityPub"}},"id":"https:\/\/chaos.social\/users\/jaseg\/statuses\/115667470189439240","object":{"id":"https:\/\/chaos.social\/users\/jaseg\/statuses\/115667470189439240","objectType":"note","content":"

@david_chisnall<\/a> @whitequark<\/a> If you\u2019d implement this in git, it wouldn\u2019t even be the first use of in-tree metadata (see .gitmodules) and it also wouldn\u2019t be the first instance where the output of git log etc. could change after the fact without rewriting history (see branch names). maybe this would actually be worth an RFC in case this hasn\u2019t been proposed before.<\/p>","url":"https:\/\/chaos.social\/@jaseg\/115667470189439240","status_net":{"notice_id":null},"inReplyTo":{"objectType":"note","id":"https:\/\/infosec.exchange\/users\/david_chisnall\/statuses\/115667284263551171","url":"https:\/\/infosec.exchange\/@david_chisnall\/115667284263551171"}},"to":[{"objectType":"http:\/\/activitystrea.ms\/schema\/1.0\/person","id":"https:\/\/mastodon.social\/users\/whitequark"},{"objectType":"http:\/\/activitystrea.ms\/schema\/1.0\/person","id":"https:\/\/infosec.exchange\/users\/david_chisnall"},{"objectType":"http:\/\/activitystrea.ms\/schema\/1.0\/collection","id":"http:\/\/activityschema.org\/collection\/public"}],"status_net":{"conversation":"tag:gnusocial.jp,2025-12-05:objectType=thread:nonce=24ea25838af411e5","notice_info":{"local_id":"11651161","source":"ActivityPub"}},"published":"2025-12-05T15:02:39+00:00","provider":{"objectType":"service","displayName":"GNU social JP","url":"https:\/\/gnusocial.jp\/"},"verb":"post","url":"https:\/\/chaos.social\/@jaseg\/115667470189439240"},{"actor":{"id":"https:\/\/infosec.exchange\/users\/david_chisnall","displayName":"David Chisnall (*Now with 50% more sarcasm!*)","status_net":{"avatarLinks":[{"url":"https:\/\/gnusocial.jp\/avatar\/241214-original-tmp20240208114849.webp","rel":"avatar","type":"image\/webp","width":200,"height":200},{"url":"https:\/\/gnusocial.jp\/avatar\/241214-96-20240302204654.webp","rel":"avatar","type":"image\/webp","width":96,"height":96},{"url":"https:\/\/gnusocial.jp\/avatar\/241214-48-20240302204654.webp","rel":"avatar","type":"image\/webp","width":48,"height":48},{"url":"https:\/\/gnusocial.jp\/avatar\/241214-24-20240302204654.webp","rel":"avatar","type":"image\/webp","width":24,"height":24}],"profile_info":{"local_id":"241214"}},"image":{"url":"https:\/\/gnusocial.jp\/avatar\/241214-96-20240302204654.webp","rel":"avatar","type":"image\/webp","width":96,"height":96},"objectType":"person","summary":"I am Director of System Architecture at SCI Semiconductor and a Visiting Researcher at the University of Cambridge Computer Laboratory. I remain actively involved in the #CHERI project, where I led the early language \/ compiler strand of the research, and am the maintainer of the #CHERIoT Platform. I was on the FreeBSD Core Team for two terms, have been an LLVM developer since 2008, am the author of the GNUstep Objective-C runtime (libobjc2 and associated clang support), and am responsible for libcxxrt and the BSD-licensed device tree compiler.Opinions expressed by me are not necessarily opinions. In all probability they are random ramblings and should be ignored. Failure to ignore may result in severe boredom and \/ or confusion. Shake well before opening. Keep refrigerated.Warning: May contain greater than the recommended daily allowance of sarcasm.No license, implied or explicit, is granted to use any of my posts for training AI models.","url":"https:\/\/infosec.exchange\/@david_chisnall","portablecontacts_net":{"preferredUsername":"david_chisnall","displayName":"David Chisnall (*Now with 50% more sarcasm!*)","note":"I am Director of System Architecture at SCI Semiconductor and a Visiting Researcher at the University of Cambridge Computer Laboratory. I remain actively involved in the #CHERI project, where I led the early language \/ compiler strand of the research, and am the maintainer of the #CHERIoT Platform. I was on the FreeBSD Core Team for two terms, have been an LLVM developer since 2008, am the author of the GNUstep Objective-C runtime (libobjc2 and associated clang support), and am responsible for libcxxrt and the BSD-licensed device tree compiler.Opinions expressed by me are not necessarily opinions. In all probability they are random ramblings and should be ignored. Failure to ignore may result in severe boredom and \/ or confusion. Shake well before opening. Keep refrigerated.Warning: May contain greater than the recommended daily allowance of sarcasm.No license, implied or explicit, is granted to use any of my posts for training AI models."}},"content":"

@whitequark<\/a> <\/p>

Pijul does, in the traditional computer science way: Names in the commit history are unique opaque identifiers. The repository contains a mapping from those to people, but that mapping can be changed (and can be different on different repos). If I remember correctly, they have a little bit of public-key crypto to make sure that the same identifier in two repos is the same person, but that doesn't let you know which person without the other metadata.<\/p>","generator":{"id":"tag:gnusocial.jp,2026-05-19:notice-source:ActivityPub","objectType":"application","status_net":{"source_code":"ActivityPub"}},"id":"https:\/\/infosec.exchange\/users\/david_chisnall\/statuses\/115667284263551171","object":{"id":"https:\/\/infosec.exchange\/users\/david_chisnall\/statuses\/115667284263551171","objectType":"note","content":"

@whitequark<\/a> <\/p>

Pijul does, in the traditional computer science way: Names in the commit history are unique opaque identifiers. The repository contains a mapping from those to people, but that mapping can be changed (and can be different on different repos). If I remember correctly, they have a little bit of public-key crypto to make sure that the same identifier in two repos is the same person, but that doesn't let you know which person without the other metadata.<\/p>","url":"https:\/\/infosec.exchange\/@david_chisnall\/115667284263551171","status_net":{"notice_id":null},"inReplyTo":{"objectType":"note","id":"https:\/\/mastodon.social\/users\/whitequark\/statuses\/115667270103243178","url":"https:\/\/mastodon.social\/@whitequark\/115667270103243178"}},"to":[{"objectType":"http:\/\/activitystrea.ms\/schema\/1.0\/person","id":"https:\/\/mastodon.social\/users\/whitequark"},{"objectType":"http:\/\/activitystrea.ms\/schema\/1.0\/collection","id":"http:\/\/activityschema.org\/collection\/public"}],"status_net":{"conversation":"tag:gnusocial.jp,2025-12-05:objectType=thread:nonce=24ea25838af411e5","notice_info":{"local_id":"11651160","source":"ActivityPub"}},"published":"2025-12-05T15:02:39+00:00","provider":{"objectType":"service","displayName":"GNU social JP","url":"https:\/\/gnusocial.jp\/"},"verb":"post","url":"https:\/\/infosec.exchange\/@david_chisnall\/115667284263551171"},{"actor":{"id":"https:\/\/chaos.social\/users\/jaseg","displayName":"jaseg","status_net":{"avatarLinks":[{"url":"https:\/\/gnusocial.jp\/avatar\/151477-original-tmp20230720120253.webp","rel":"avatar","type":"image\/webp","width":400,"height":400},{"url":"https:\/\/gnusocial.jp\/avatar\/151477-96-20230726215114.webp","rel":"avatar","type":"image\/webp","width":96,"height":96},{"url":"https:\/\/gnusocial.jp\/avatar\/151477-48-20230726215114.webp","rel":"avatar","type":"image\/webp","width":48,"height":48},{"url":"https:\/\/gnusocial.jp\/avatar\/151477-24-20230726215114.webp","rel":"avatar","type":"image\/webp","width":24,"height":24}],"profile_info":{"local_id":"151477"}},"image":{"url":"https:\/\/gnusocial.jp\/avatar\/151477-96-20230726215114.webp","rel":"avatar","type":"image\/webp","width":96,"height":96},"objectType":"person","summary":"I am doing #electronics, #embedded programming, #python scripting, hardware security and recently some sewing.Email: whatever you like at my domain. I've got a catch-all alias.Pronouns: er\/they","url":"https:\/\/chaos.social\/@jaseg","portablecontacts_net":{"preferredUsername":"jaseg","displayName":"jaseg","note":"I am doing #electronics, #embedded programming, #python scripting, hardware security and recently some sewing.Email: whatever you like at my domain. I've got a catch-all alias.Pronouns: er\/they"}},"content":"

@david_chisnall<\/a> @whitequark<\/a> you could even stay backwards compatible by adopting some well-known syntax to put into the author fields that points to the in-tree author aliases file.<\/p>

This likely wouldn\u2019t completely solve the GDPR issue since you would still be able to access old versions of that author name mapping file, but you could even work around that by doing sparse checkouts and only keeping the latest version of that file.<\/p>","generator":{"id":"tag:gnusocial.jp,2026-05-19:notice-source:ActivityPub","objectType":"application","status_net":{"source_code":"ActivityPub"}},"id":"https:\/\/chaos.social\/users\/jaseg\/statuses\/115667478195970944","object":{"id":"https:\/\/chaos.social\/users\/jaseg\/statuses\/115667478195970944","objectType":"note","content":"

@david_chisnall<\/a> @whitequark<\/a> you could even stay backwards compatible by adopting some well-known syntax to put into the author fields that points to the in-tree author aliases file.<\/p>

This likely wouldn\u2019t completely solve the GDPR issue since you would still be able to access old versions of that author name mapping file, but you could even work around that by doing sparse checkouts and only keeping the latest version of that file.<\/p>","url":"https:\/\/chaos.social\/@jaseg\/115667478195970944","status_net":{"notice_id":null},"inReplyTo":{"objectType":"note","id":"https:\/\/chaos.social\/users\/jaseg\/statuses\/115667470189439240","url":"https:\/\/chaos.social\/@jaseg\/115667470189439240"}},"to":[{"objectType":"http:\/\/activitystrea.ms\/schema\/1.0\/person","id":"https:\/\/mastodon.social\/users\/whitequark"},{"objectType":"http:\/\/activitystrea.ms\/schema\/1.0\/person","id":"https:\/\/infosec.exchange\/users\/david_chisnall"},{"objectType":"http:\/\/activitystrea.ms\/schema\/1.0\/collection","id":"http:\/\/activityschema.org\/collection\/public"}],"status_net":{"conversation":"tag:gnusocial.jp,2025-12-05:objectType=thread:nonce=24ea25838af411e5","notice_info":{"local_id":"11651162","source":"ActivityPub"}},"published":"2025-12-05T15:02:37+00:00","provider":{"objectType":"service","displayName":"GNU social JP","url":"https:\/\/gnusocial.jp\/"},"verb":"post","url":"https:\/\/chaos.social\/@jaseg\/115667478195970944"},{"actor":{"id":"https:\/\/chaos.social\/users\/jaseg","displayName":"jaseg","status_net":{"avatarLinks":[{"url":"https:\/\/gnusocial.jp\/avatar\/151477-original-tmp20230720120253.webp","rel":"avatar","type":"image\/webp","width":400,"height":400},{"url":"https:\/\/gnusocial.jp\/avatar\/151477-96-20230726215114.webp","rel":"avatar","type":"image\/webp","width":96,"height":96},{"url":"https:\/\/gnusocial.jp\/avatar\/151477-48-20230726215114.webp","rel":"avatar","type":"image\/webp","width":48,"height":48},{"url":"https:\/\/gnusocial.jp\/avatar\/151477-24-20230726215114.webp","rel":"avatar","type":"image\/webp","width":24,"height":24}],"profile_info":{"local_id":"151477"}},"image":{"url":"https:\/\/gnusocial.jp\/avatar\/151477-96-20230726215114.webp","rel":"avatar","type":"image\/webp","width":96,"height":96},"objectType":"person","summary":"I am doing #electronics, #embedded programming, #python scripting, hardware security and recently some sewing.Email: whatever you like at my domain. I've got a catch-all alias.Pronouns: er\/they","url":"https:\/\/chaos.social\/@jaseg","portablecontacts_net":{"preferredUsername":"jaseg","displayName":"jaseg","note":"I am doing #electronics, #embedded programming, #python scripting, hardware security and recently some sewing.Email: whatever you like at my domain. I've got a catch-all alias.Pronouns: er\/they"}},"content":"

@david_chisnall<\/a> @whitequark<\/a> branch names and tags work kind of in a similar way, they are synchronized as needed, things work without them, and they are not part of the history.<\/p>","generator":{"id":"tag:gnusocial.jp,2026-05-19:notice-source:ActivityPub","objectType":"application","status_net":{"source_code":"ActivityPub"}},"id":"https:\/\/chaos.social\/users\/jaseg\/statuses\/115667489123044713","object":{"id":"https:\/\/chaos.social\/users\/jaseg\/statuses\/115667489123044713","objectType":"note","content":"

@david_chisnall<\/a> @whitequark<\/a> branch names and tags work kind of in a similar way, they are synchronized as needed, things work without them, and they are not part of the history.<\/p>","url":"https:\/\/chaos.social\/@jaseg\/115667489123044713","status_net":{"notice_id":null},"inReplyTo":{"objectType":"note","id":"https:\/\/infosec.exchange\/users\/david_chisnall\/statuses\/115667484969379168","url":"https:\/\/infosec.exchange\/@david_chisnall\/115667484969379168"}},"to":[{"objectType":"http:\/\/activitystrea.ms\/schema\/1.0\/person","id":"https:\/\/mastodon.social\/users\/whitequark"},{"objectType":"http:\/\/activitystrea.ms\/schema\/1.0\/person","id":"https:\/\/infosec.exchange\/users\/david_chisnall"},{"objectType":"http:\/\/activitystrea.ms\/schema\/1.0\/collection","id":"http:\/\/activityschema.org\/collection\/public"}],"status_net":{"conversation":"tag:gnusocial.jp,2025-12-05:objectType=thread:nonce=24ea25838af411e5","notice_info":{"local_id":"11651164","source":"ActivityPub"}},"published":"2025-12-05T15:02:36+00:00","provider":{"objectType":"service","displayName":"GNU social JP","url":"https:\/\/gnusocial.jp\/"},"verb":"post","url":"https:\/\/chaos.social\/@jaseg\/115667489123044713"},{"actor":{"id":"https:\/\/infosec.exchange\/users\/david_chisnall","displayName":"David Chisnall (*Now with 50% more sarcasm!*)","status_net":{"avatarLinks":[{"url":"https:\/\/gnusocial.jp\/avatar\/241214-original-tmp20240208114849.webp","rel":"avatar","type":"image\/webp","width":200,"height":200},{"url":"https:\/\/gnusocial.jp\/avatar\/241214-96-20240302204654.webp","rel":"avatar","type":"image\/webp","width":96,"height":96},{"url":"https:\/\/gnusocial.jp\/avatar\/241214-48-20240302204654.webp","rel":"avatar","type":"image\/webp","width":48,"height":48},{"url":"https:\/\/gnusocial.jp\/avatar\/241214-24-20240302204654.webp","rel":"avatar","type":"image\/webp","width":24,"height":24}],"profile_info":{"local_id":"241214"}},"image":{"url":"https:\/\/gnusocial.jp\/avatar\/241214-96-20240302204654.webp","rel":"avatar","type":"image\/webp","width":96,"height":96},"objectType":"person","summary":"I am Director of System Architecture at SCI Semiconductor and a Visiting Researcher at the University of Cambridge Computer Laboratory. I remain actively involved in the #CHERI project, where I led the early language \/ compiler strand of the research, and am the maintainer of the #CHERIoT Platform. I was on the FreeBSD Core Team for two terms, have been an LLVM developer since 2008, am the author of the GNUstep Objective-C runtime (libobjc2 and associated clang support), and am responsible for libcxxrt and the BSD-licensed device tree compiler.Opinions expressed by me are not necessarily opinions. In all probability they are random ramblings and should be ignored. Failure to ignore may result in severe boredom and \/ or confusion. Shake well before opening. Keep refrigerated.Warning: May contain greater than the recommended daily allowance of sarcasm.No license, implied or explicit, is granted to use any of my posts for training AI models.","url":"https:\/\/infosec.exchange\/@david_chisnall","portablecontacts_net":{"preferredUsername":"david_chisnall","displayName":"David Chisnall (*Now with 50% more sarcasm!*)","note":"I am Director of System Architecture at SCI Semiconductor and a Visiting Researcher at the University of Cambridge Computer Laboratory. I remain actively involved in the #CHERI project, where I led the early language \/ compiler strand of the research, and am the maintainer of the #CHERIoT Platform. I was on the FreeBSD Core Team for two terms, have been an LLVM developer since 2008, am the author of the GNUstep Objective-C runtime (libobjc2 and associated clang support), and am responsible for libcxxrt and the BSD-licensed device tree compiler.Opinions expressed by me are not necessarily opinions. In all probability they are random ramblings and should be ignored. Failure to ignore may result in severe boredom and \/ or confusion. Shake well before opening. Keep refrigerated.Warning: May contain greater than the recommended daily allowance of sarcasm.No license, implied or explicit, is granted to use any of my posts for training AI models."}},"content":"

@jaseg<\/a> @whitequark<\/a> <\/p>

Yup, that's the key difference with the Pijul approach. The mapping is part of the repo state, but not part of the history. Git doesn't have any similar abstraction for building this kind of thing, as far as I am aware, except maybe git config (but I don't think you have a way of querying a remote's config?).<\/p>","generator":{"id":"tag:gnusocial.jp,2026-05-19:notice-source:ActivityPub","objectType":"application","status_net":{"source_code":"ActivityPub"}},"id":"https:\/\/infosec.exchange\/users\/david_chisnall\/statuses\/115667484969379168","object":{"id":"https:\/\/infosec.exchange\/users\/david_chisnall\/statuses\/115667484969379168","objectType":"note","content":"

@jaseg<\/a> @whitequark<\/a> <\/p>

Yup, that's the key difference with the Pijul approach. The mapping is part of the repo state, but not part of the history. Git doesn't have any similar abstraction for building this kind of thing, as far as I am aware, except maybe git config (but I don't think you have a way of querying a remote's config?).<\/p>","url":"https:\/\/infosec.exchange\/@david_chisnall\/115667484969379168","status_net":{"notice_id":null},"inReplyTo":{"objectType":"note","id":"https:\/\/chaos.social\/users\/jaseg\/statuses\/115667478195970944","url":"https:\/\/chaos.social\/@jaseg\/115667478195970944"}},"to":[{"objectType":"http:\/\/activitystrea.ms\/schema\/1.0\/person","id":"https:\/\/mastodon.social\/users\/whitequark"},{"objectType":"http:\/\/activitystrea.ms\/schema\/1.0\/person","id":"https:\/\/chaos.social\/users\/jaseg"},{"objectType":"http:\/\/activitystrea.ms\/schema\/1.0\/collection","id":"http:\/\/activityschema.org\/collection\/public"}],"status_net":{"conversation":"tag:gnusocial.jp,2025-12-05:objectType=thread:nonce=24ea25838af411e5","notice_info":{"local_id":"11651163","source":"ActivityPub"}},"published":"2025-12-05T15:02:36+00:00","provider":{"objectType":"service","displayName":"GNU social JP","url":"https:\/\/gnusocial.jp\/"},"verb":"post","url":"https:\/\/infosec.exchange\/@david_chisnall\/115667484969379168"},{"actor":{"id":"https:\/\/infosec.exchange\/users\/david_chisnall","displayName":"David Chisnall (*Now with 50% more sarcasm!*)","status_net":{"avatarLinks":[{"url":"https:\/\/gnusocial.jp\/avatar\/241214-original-tmp20240208114849.webp","rel":"avatar","type":"image\/webp","width":200,"height":200},{"url":"https:\/\/gnusocial.jp\/avatar\/241214-96-20240302204654.webp","rel":"avatar","type":"image\/webp","width":96,"height":96},{"url":"https:\/\/gnusocial.jp\/avatar\/241214-48-20240302204654.webp","rel":"avatar","type":"image\/webp","width":48,"height":48},{"url":"https:\/\/gnusocial.jp\/avatar\/241214-24-20240302204654.webp","rel":"avatar","type":"image\/webp","width":24,"height":24}],"profile_info":{"local_id":"241214"}},"image":{"url":"https:\/\/gnusocial.jp\/avatar\/241214-96-20240302204654.webp","rel":"avatar","type":"image\/webp","width":96,"height":96},"objectType":"person","summary":"I am Director of System Architecture at SCI Semiconductor and a Visiting Researcher at the University of Cambridge Computer Laboratory. I remain actively involved in the #CHERI project, where I led the early language \/ compiler strand of the research, and am the maintainer of the #CHERIoT Platform. I was on the FreeBSD Core Team for two terms, have been an LLVM developer since 2008, am the author of the GNUstep Objective-C runtime (libobjc2 and associated clang support), and am responsible for libcxxrt and the BSD-licensed device tree compiler.Opinions expressed by me are not necessarily opinions. In all probability they are random ramblings and should be ignored. Failure to ignore may result in severe boredom and \/ or confusion. Shake well before opening. Keep refrigerated.Warning: May contain greater than the recommended daily allowance of sarcasm.No license, implied or explicit, is granted to use any of my posts for training AI models.","url":"https:\/\/infosec.exchange\/@david_chisnall","portablecontacts_net":{"preferredUsername":"david_chisnall","displayName":"David Chisnall (*Now with 50% more sarcasm!*)","note":"I am Director of System Architecture at SCI Semiconductor and a Visiting Researcher at the University of Cambridge Computer Laboratory. I remain actively involved in the #CHERI project, where I led the early language \/ compiler strand of the research, and am the maintainer of the #CHERIoT Platform. I was on the FreeBSD Core Team for two terms, have been an LLVM developer since 2008, am the author of the GNUstep Objective-C runtime (libobjc2 and associated clang support), and am responsible for libcxxrt and the BSD-licensed device tree compiler.Opinions expressed by me are not necessarily opinions. In all probability they are random ramblings and should be ignored. Failure to ignore may result in severe boredom and \/ or confusion. Shake well before opening. Keep refrigerated.Warning: May contain greater than the recommended daily allowance of sarcasm.No license, implied or explicit, is granted to use any of my posts for training AI models."}},"content":"

@jaseg<\/a> @whitequark<\/a> <\/p>

Yup, that's a good equivalent. I wonder if you could encode these things as tags. Tags currently refer to a single commit, but I guess you could have a namespace of tags for commits from a specific person and one tag for each commit that they'd made. Or you could add some proper indirection and have the author refer to a tag name and the tag name just point to a single object that contains the real name (rather than a commit in the history).<\/p>","generator":{"id":"tag:gnusocial.jp,2026-05-19:notice-source:ActivityPub","objectType":"application","status_net":{"source_code":"ActivityPub"}},"id":"https:\/\/infosec.exchange\/users\/david_chisnall\/statuses\/115667508595669812","object":{"id":"https:\/\/infosec.exchange\/users\/david_chisnall\/statuses\/115667508595669812","objectType":"note","content":"

@jaseg<\/a> @whitequark<\/a> <\/p>

Yup, that's a good equivalent. I wonder if you could encode these things as tags. Tags currently refer to a single commit, but I guess you could have a namespace of tags for commits from a specific person and one tag for each commit that they'd made. Or you could add some proper indirection and have the author refer to a tag name and the tag name just point to a single object that contains the real name (rather than a commit in the history).<\/p>","url":"https:\/\/infosec.exchange\/@david_chisnall\/115667508595669812","status_net":{"notice_id":null},"inReplyTo":{"objectType":"note","id":"https:\/\/chaos.social\/users\/jaseg\/statuses\/115667489123044713","url":"https:\/\/chaos.social\/@jaseg\/115667489123044713"}},"to":[{"objectType":"http:\/\/activitystrea.ms\/schema\/1.0\/person","id":"https:\/\/mastodon.social\/users\/whitequark"},{"objectType":"http:\/\/activitystrea.ms\/schema\/1.0\/person","id":"https:\/\/chaos.social\/users\/jaseg"},{"objectType":"http:\/\/activitystrea.ms\/schema\/1.0\/collection","id":"http:\/\/activityschema.org\/collection\/public"}],"status_net":{"conversation":"tag:gnusocial.jp,2025-12-05:objectType=thread:nonce=24ea25838af411e5","notice_info":{"local_id":"11651165","source":"ActivityPub"}},"published":"2025-12-05T15:02:34+00:00","provider":{"objectType":"service","displayName":"GNU social JP","url":"https:\/\/gnusocial.jp\/"},"verb":"post","url":"https:\/\/infosec.exchange\/@david_chisnall\/115667508595669812"},{"actor":{"id":"https:\/\/mastodon.social\/users\/whitequark","displayName":"\u2727\u2726Catherine\u2726\u2727","status_net":{"avatarLinks":[{"url":"https:\/\/gnusocial.jp\/avatar\/105710-original-tmp20230309163231.webp","rel":"avatar","type":"image\/webp","width":400,"height":400},{"url":"https:\/\/gnusocial.jp\/avatar\/105710-96-20230309163231.webp","rel":"avatar","type":"image\/webp","width":96,"height":96},{"url":"https:\/\/gnusocial.jp\/avatar\/105710-48-20230309163231.webp","rel":"avatar","type":"image\/webp","width":48,"height":48},{"url":"https:\/\/gnusocial.jp\/avatar\/105710-24-20230309163231.webp","rel":"avatar","type":"image\/webp","width":24,"height":24}],"profile_info":{"local_id":"105710"}},"image":{"url":"https:\/\/gnusocial.jp\/avatar\/105710-96-20230309163231.webp","rel":"avatar","type":"image\/webp","width":96,"height":96},"objectType":"person","summary":"cat(girl) shaped object, hardware omelas kid"A cat is valued for companionship and its ability to kill vermin."\u2727 i have friends, and my purpose is to support them \u2727\u2726 i have enemies, and my purpose is to eliminate them \u2726\u2736 i have a life, and my purpose is to reach heaven by violence \u2736\u2737 nothing else matters \u2737#searchable","url":"https:\/\/mastodon.social\/@whitequark","portablecontacts_net":{"preferredUsername":"whitequark","displayName":"\u2727\u2726Catherine\u2726\u2727","note":"cat(girl) shaped object, hardware omelas kid"A cat is valued for companionship and its ability to kill vermin."\u2727 i have friends, and my purpose is to support them \u2727\u2726 i have enemies, and my purpose is to eliminate them \u2726\u2736 i have a life, and my purpose is to reach heaven by violence \u2736\u2737 nothing else matters \u2737#searchable"}},"content":"

@david_chisnall<\/a> @jaseg<\/a> I was thinking of this too! it's cursed but broadly compatible at least<\/p>","generator":{"id":"tag:gnusocial.jp,2026-05-19:notice-source:ActivityPub","objectType":"application","status_net":{"source_code":"ActivityPub"}},"id":"https:\/\/mastodon.social\/users\/whitequark\/statuses\/115667561682456451","object":{"id":"https:\/\/mastodon.social\/users\/whitequark\/statuses\/115667561682456451","objectType":"note","content":"

@david_chisnall<\/a> @jaseg<\/a> I was thinking of this too! it's cursed but broadly compatible at least<\/p>","url":"https:\/\/mastodon.social\/@whitequark\/115667561682456451","status_net":{"notice_id":null},"inReplyTo":{"objectType":"note","id":"https:\/\/infosec.exchange\/users\/david_chisnall\/statuses\/115667508595669812","url":"https:\/\/infosec.exchange\/@david_chisnall\/115667508595669812"}},"to":[{"objectType":"http:\/\/activitystrea.ms\/schema\/1.0\/person","id":"https:\/\/chaos.social\/users\/jaseg"},{"objectType":"http:\/\/activitystrea.ms\/schema\/1.0\/person","id":"https:\/\/infosec.exchange\/users\/david_chisnall"},{"objectType":"http:\/\/activitystrea.ms\/schema\/1.0\/collection","id":"http:\/\/activityschema.org\/collection\/public"}],"status_net":{"conversation":"tag:gnusocial.jp,2025-12-05:objectType=thread:nonce=24ea25838af411e5","notice_info":{"local_id":"11651166","source":"ActivityPub"}},"published":"2025-12-05T15:02:33+00:00","provider":{"objectType":"service","displayName":"GNU social JP","url":"https:\/\/gnusocial.jp\/"},"verb":"post","url":"https:\/\/mastodon.social\/@whitequark\/115667561682456451"},{"actor":{"id":"https:\/\/mastodon.social\/users\/whitequark","displayName":"\u2727\u2726Catherine\u2726\u2727","status_net":{"avatarLinks":[{"url":"https:\/\/gnusocial.jp\/avatar\/105710-original-tmp20230309163231.webp","rel":"avatar","type":"image\/webp","width":400,"height":400},{"url":"https:\/\/gnusocial.jp\/avatar\/105710-96-20230309163231.webp","rel":"avatar","type":"image\/webp","width":96,"height":96},{"url":"https:\/\/gnusocial.jp\/avatar\/105710-48-20230309163231.webp","rel":"avatar","type":"image\/webp","width":48,"height":48},{"url":"https:\/\/gnusocial.jp\/avatar\/105710-24-20230309163231.webp","rel":"avatar","type":"image\/webp","width":24,"height":24}],"profile_info":{"local_id":"105710"}},"image":{"url":"https:\/\/gnusocial.jp\/avatar\/105710-96-20230309163231.webp","rel":"avatar","type":"image\/webp","width":96,"height":96},"objectType":"person","summary":"cat(girl) shaped object, hardware omelas kid"A cat is valued for companionship and its ability to kill vermin."\u2727 i have friends, and my purpose is to support them \u2727\u2726 i have enemies, and my purpose is to eliminate them \u2726\u2736 i have a life, and my purpose is to reach heaven by violence \u2736\u2737 nothing else matters \u2737#searchable","url":"https:\/\/mastodon.social\/@whitequark","portablecontacts_net":{"preferredUsername":"whitequark","displayName":"\u2727\u2726Catherine\u2726\u2727","note":"cat(girl) shaped object, hardware omelas kid"A cat is valued for companionship and its ability to kill vermin."\u2727 i have friends, and my purpose is to support them \u2727\u2726 i have enemies, and my purpose is to eliminate them \u2726\u2736 i have a life, and my purpose is to reach heaven by violence \u2736\u2737 nothing else matters \u2737#searchable"}},"content":"

@david_chisnall<\/a> I think you could store the UUID => name\/email map in a \"sidecar\" that is updated destructively while the main Merkle tree remains intact?<\/p>","generator":{"id":"tag:gnusocial.jp,2026-05-19:notice-source:ActivityPub","objectType":"application","status_net":{"source_code":"ActivityPub"}},"id":"https:\/\/mastodon.social\/users\/whitequark\/statuses\/115667273763565199","object":{"id":"https:\/\/mastodon.social\/users\/whitequark\/statuses\/115667273763565199","objectType":"note","content":"

@david_chisnall<\/a> I think you could store the UUID => name\/email map in a \"sidecar\" that is updated destructively while the main Merkle tree remains intact?<\/p>","url":"https:\/\/mastodon.social\/@whitequark\/115667273763565199","status_net":{"notice_id":null},"inReplyTo":{"objectType":"note","id":"https:\/\/mastodon.social\/users\/whitequark\/statuses\/115667270103243178","url":"https:\/\/mastodon.social\/@whitequark\/115667270103243178"}},"to":[{"objectType":"http:\/\/activitystrea.ms\/schema\/1.0\/person","id":"https:\/\/infosec.exchange\/users\/david_chisnall"},{"objectType":"http:\/\/activitystrea.ms\/schema\/1.0\/collection","id":"http:\/\/activityschema.org\/collection\/public"}],"status_net":{"conversation":"tag:gnusocial.jp,2025-12-05:objectType=thread:nonce=24ea25838af411e5","notice_info":{"local_id":"11650830","source":"ActivityPub"}},"published":"2025-12-05T13:49:21+00:00","provider":{"objectType":"service","displayName":"GNU social JP","url":"https:\/\/gnusocial.jp\/"},"verb":"post","url":"https:\/\/mastodon.social\/@whitequark\/115667273763565199"},{"actor":{"id":"https:\/\/infosec.exchange\/users\/david_chisnall","displayName":"David Chisnall (*Now with 50% more sarcasm!*)","status_net":{"avatarLinks":[{"url":"https:\/\/gnusocial.jp\/avatar\/241214-original-tmp20240208114849.webp","rel":"avatar","type":"image\/webp","width":200,"height":200},{"url":"https:\/\/gnusocial.jp\/avatar\/241214-96-20240302204654.webp","rel":"avatar","type":"image\/webp","width":96,"height":96},{"url":"https:\/\/gnusocial.jp\/avatar\/241214-48-20240302204654.webp","rel":"avatar","type":"image\/webp","width":48,"height":48},{"url":"https:\/\/gnusocial.jp\/avatar\/241214-24-20240302204654.webp","rel":"avatar","type":"image\/webp","width":24,"height":24}],"profile_info":{"local_id":"241214"}},"image":{"url":"https:\/\/gnusocial.jp\/avatar\/241214-96-20240302204654.webp","rel":"avatar","type":"image\/webp","width":96,"height":96},"objectType":"person","summary":"I am Director of System Architecture at SCI Semiconductor and a Visiting Researcher at the University of Cambridge Computer Laboratory. I remain actively involved in the #CHERI project, where I led the early language \/ compiler strand of the research, and am the maintainer of the #CHERIoT Platform. I was on the FreeBSD Core Team for two terms, have been an LLVM developer since 2008, am the author of the GNUstep Objective-C runtime (libobjc2 and associated clang support), and am responsible for libcxxrt and the BSD-licensed device tree compiler.Opinions expressed by me are not necessarily opinions. In all probability they are random ramblings and should be ignored. Failure to ignore may result in severe boredom and \/ or confusion. Shake well before opening. Keep refrigerated.Warning: May contain greater than the recommended daily allowance of sarcasm.No license, implied or explicit, is granted to use any of my posts for training AI models.","url":"https:\/\/infosec.exchange\/@david_chisnall","portablecontacts_net":{"preferredUsername":"david_chisnall","displayName":"David Chisnall (*Now with 50% more sarcasm!*)","note":"I am Director of System Architecture at SCI Semiconductor and a Visiting Researcher at the University of Cambridge Computer Laboratory. I remain actively involved in the #CHERI project, where I led the early language \/ compiler strand of the research, and am the maintainer of the #CHERIoT Platform. I was on the FreeBSD Core Team for two terms, have been an LLVM developer since 2008, am the author of the GNUstep Objective-C runtime (libobjc2 and associated clang support), and am responsible for libcxxrt and the BSD-licensed device tree compiler.Opinions expressed by me are not necessarily opinions. In all probability they are random ramblings and should be ignored. Failure to ignore may result in severe boredom and \/ or confusion. Shake well before opening. Keep refrigerated.Warning: May contain greater than the recommended daily allowance of sarcasm.No license, implied or explicit, is granted to use any of my posts for training AI models."}},"content":"

@whitequark<\/a> <\/p>

As always happens when I speak to multiple lawyers, I get multiple answers. The opinions are either:<\/p>