Using YAML as an intermediate format between steps of a process is a mistake. I love YAML for configuration but I’d never use it for machine-to-machine anything. If the tool you’re feeding data to requires YAML as input, just give it JSON. All JSON is valid YAML.

Edit: I realize you weren’t the one who made that decision. I’m saying the problem isn’t YAML, the problem is someone using YAML inappropriately.

[–] backgroundcow@lemmy.world 2 points 2 hours ago* (last edited 2 hours ago)

I completely agree with the general assessment, but then there are always pesky exceptions. In this case the list entered a JavaScript frontend from the yaml header of machine generated content pages for the website framework Hugo. And, of course, after finding the bug, it is clear that things could have been done differently and the issue easily avoided, but I also don't think this was a completely unreasonable design. Since Hugo actually supports JSON headers (not just via the yaml parser, but thanks for that tip!), that was a quick fix. But I'm also somewhat amazed that it was possible for the strung-together fairly standard set of Python libraries (primarily pyyaml) to not get the strings properly quoted.