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- 2If the compression causes a binary to not work, or unreadable data, then it is not transparent. It is supposed to be transparent.– Sidias-KorradoCommentedNov 1, 2019 at 23:20
- 1If a software causes errors, then it is not bug-free? Yet we expect it to be reasonably bug-free? — 'Transparent' means here just that user file operations are usually exactly the same for compressed and uncompressed files, that eg from Finder you cannot even see that a file is compressed in that way.– LаngLаngСCommentedFeb 18, 2020 at 11:26
- 1TSBAA (this should be accepted answer), but people tend to choose simple "solutions".– poigeCommentedFeb 2, 2021 at 11:13
- 6@Sidias-Korrado The compression is not transparent on a file system level. APFS itself knows nothing about compression, neither does HFS+. It is transparent as long as you use standard file system APIs, though. Compressed files are just normal files with compressed content and a special extended file attribute set. This attribute is recognized by a file system extension in kernel that will then perform decompression during data reads. Yet there are a few APIs that bypass file system extensions and directly operate on the raw file data and those would see the compressed data.– MeckiCommentedJul 20, 2021 at 12:17
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