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rust: Make NodePrefix allocation-free and Copy, remove NodePrefixRef...

rust: Make NodePrefix allocation-free and Copy, remove NodePrefixRef The `*Ref` struct only existed to avoid allocating `Vec`s when cloning `NodePrefix`, but we can avoid having `Vec` in the first place by using an inline array instead. This makes `NodePrefix` 21 bytes (with 1 for the length) which is smaller than before as `Vec` alone is 24 bytes. Differential Revision: https://phab.mercurial-scm.org/D9863

Antoine Cezar - - Load All Authors

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             exitcode.rs
        
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                | application/rls-services+xml
            
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                RustLexer
            
             / rust / rhg / src / exitcode.rs
          
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      pub type ExitCode = i32;

      /// Successful exit

      pub const OK: ExitCode = 0;

      /// Generic abort

      pub const ABORT: ExitCode = 255;

      /// Command not implemented by rhg

      pub const UNIMPLEMENTED_COMMAND: ExitCode = 252;

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				pub type ExitCode = i32;

				/// Successful exit
				pub const OK: ExitCode = 0;

				/// Generic abort
				pub const ABORT: ExitCode = 255;

				/// Command not implemented by rhg
				pub const UNIMPLEMENTED_COMMAND: ExitCode = 252;