[gregmac]

Yes, trailing commas should work everywhere!

JSON is the other one where it annoys me, but luckily I rarely hand-write any JSON anymore (and there are semi-solutions for this like json5).

In code I always add trailing commas to anything comma-separated. It makes editing simpler (you can shuffle lines without thinking about commas). In a diff or blame it doesn't show adding a comma as a change.

SQL is the one spot where this doesn't work, and it's a constant foot-gun as I often don't remember until I run and get a syntax error.

[skrtskrt]

JSONC allows comments and trailing commas, but adoption seems to be low.

VSCode uses it for configuration, but when I wanted to use it in Python (to add context to source-controlled Elasticsearch schemas) there were only a couple old barely-maintained libraries for parsing.

[nicoburns]

You can often find better maintained libraries for json5, which is a superset of jsonc

[yunohn]

> there were only a couple old barely-maintained libraries for parsing.

Do they work, though? If it’s a mostly stable standard, doesn’t seem like you’d need a frequently updated parser.