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(vila) Make all transport put_bytes() raises TypeError when given unicode
 strings rather than bytes (Vincent Ladeuil)

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doc/developers/case-insensitive-file-systems.txt
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For example, the FAT32 file-system is most commonly found on Windows operating
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systems, and has the characteristics usually associated with a Windows
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file-system.  However, USB devices means FAT32 file-systems are often used
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with Linux, so the current operating system doesn't necessarily reflect the
 
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with GNU/Linux systems, so the current operating system doesn't necessarily reflect the
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capabilities of the file-system.
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Bazaar supports 3 kinds of file-systems, each to different degrees.
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* Case-sensitive file-systems: This is the file-system generally used on
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  Linux - 2 files can differ only by case, and the exact case must be used
 
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  GNU/Linux: 2 files can differ only by case, and the exact case must be used
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  when opening a file.
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* Case-insensitive, case-preserving (cicp) file-systems: This is the
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relevant to a modern Bazaar.
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For more details, including use cases, please see
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http://bazaar-vcs.org/CasePreservingWorkingTreeUseCases
 
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http://wiki.bazaar.canonical.com/CasePreservingWorkingTreeUseCases
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Handling these file-systems
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---------------------------
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  of the result to match any existing items.
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* Tree.get_canonical_inventory_path - somewhat like Tree.get_symlink_target(),
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  Tree.get_file_by_path() etc; returns a name with the case adjusted to match
 
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  Tree.get_file() etc; returns a name with the case adjusted to match
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  existing inventory items.
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* osutils.canonical_relpaths() and Tree.get_canonical_inventory_paths() - like