Unverified50% confidenceFactExact time
After macOS 12 Monterey, Apple introduced a new UTType Swift API, but the underlying Launch Services association mechanism still only allows one explicit default binding.
1
Sources
50%
Confidence
Long-term
Relevance
8/17/2026
First Seen
Sources
FileRouter：自定义Mac文件默认打开方式的效率神器
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