[roblabla]

There are json5 parsers written in C89 out there. And your embedded systems from the 90s probably doesn't have a JSON parser built in at all either... If you're going to build your own json parser, adding json5 support on top is really trivial.

[genocidicbunny]

That doesn't mean it's not going to be difficult to use that parser. Not everyone has the luxury of being able to use third-party code, or having the time allotted to write a JSON5 parser. The JSON parser some places are using may have been written two decades ago and works well enough that there's little motivation to implement JSON5 support. Sometimes it's just company policy or internal politics that prevent the usage.

It's also just not that big a deal overall for the intended use of the DiffX format. It's mainly machine-generated and machine-consumed. There's human readability concerns for sure, but the format looks to be designed mainly for tools to create and consume, so missing a few features that JSON5 brings is not that big of a deal.

[DannyBee]

"That doesn't mean it's not going to be difficult to use that parser. Not everyone has the luxury of being able to use third-party code, or having the time allotted to write a JSON5 parser."

Why are these people the target market?

I understand it may be important to you, but that isn't the same as "matters to target market/audience".

On top of that, the same constraints you mention here would stop you parsing current git patch formats, and lots of other things anyway. So you were never going to be using modern tools that might care here.

This is all also really meta. Who exactly is writing software with >1% market share, needs to parse the patch format, and can't access a JSON parser.

Instead of this theoretical discussion, let's have a concrete one.

[genocidicbunny]

In this specific instance, those people are part of the target market because the project chooses to make them part of the target market. It's worked well enough for Review Board.

[quotemstr]

So the whole world should suffer through vanilla JSON because someone, somewhere, has an overbearing and paranoid software approval process? That's the attitude the delayed universal unicode adoption by a decade.

[genocidicbunny]

That's a bit dramatic. This isn't something as universal as Unicode. You really only need to care about this if you're writing tools that generate or consume the DiffX format, which is not something most people will be doing. The whole world isn't suffering their decision to use JSON instead of JSON5.