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multiformats / multicodec

Compact self-describing codecs. Save space by using predefined multicodec tables.
MIT License
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Fossil, Message-ID #277

Closed zzo38 closed 1 year ago

zzo38 commented 2 years ago

Suggestion to add multicodec number for Fossil version control system (I use for my own projects, instead of git) and Message-ID (mainly for identifying messages on NNTP, but also applicable to email).

My suggestion of numbers would be 0xF05511 (15750417) for Fossil and 0x3C (60; the ASCII code for a less than sign, which all message IDs must start with) for Message-ID. However, other numbers may also be possible if you believe that these numbers are unsuitable.

vmx commented 2 years ago

My suggestion of numbers would be 0xF05511 (15750417) for Fossil

That sounds good to me.

0x3C (60; the ASCII code for a less than sign, which all message IDs must start with) for Message-ID.

We try to reserve numbers less than 0x80 (128) for widely used things as they encode as a single byte varint. Hence we ask everyone if a higher number would be OK as well. So I'd propose something that falls into at least the 2 byte varint range.

zzo38 commented 2 years ago

We try to reserve numbers less than 0x80 (128) for widely used things as they encode as a single byte varint. Hence we ask everyone if a higher number would be OK as well. So I'd propose something that falls into at least the 2 byte varint range.

My idea was to use the less than sign since message IDs must start with it (one of the other codes says "corresponds to / in ASCII", and I had a similar idea but with < instead for Message-ID), but if that isn't important then a higher number will be OK instead.

BigLep commented 1 year ago

@zzo38 : if you want to move this forward, can you please open a PR and choose a number greater than 128?

rvagg commented 1 year ago

Closing due to inactivity, but feel free to move forward with a PR @zzo38!