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Negative values are serialized with double negative signs #2
Description
I noticed that negative values are re-encoded with double-negative signs, which breaks the bidirectional conversions for full CSS. For example, trying to parse and re-serialize .card { margin: -1rem }:
require 'minicss'
root = MiniCSS.parse(".card { margin: -1rem }")
puts MiniCSS.serialize(root)This outputs .card { margin: --1rem }
I think it's because the Number's value is -1.0 and the sign is -, so when the serializer processes it, it outputs both the - string and the - from the negative value.
Activity
heyvito commentedon Feb 23, 2026
Hi Kelly, thank you for reporting the issue.
I'll be able to take a look in a few days. If you don’t mind me asking, is this currently blocking you? Asking so I can reprioritise it among my other tasks.
ryelle commentedon Feb 25, 2026
I can work around it while I'm prototyping, and the project isn't my highest priority right now, so no immediate rush. It would be a blocker for the final product if I do end up shipping it though.