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# ccls
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ccls, which originates from [cquery](https://github.com/cquery-project/cquery), is a C/C++/Objective-C language server.
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* code completion (with both signature help and snippets)
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* [definition](src/messages/textDocument_definition.cc)/[references](src/messages/textDocument_references.cc), and other cross references
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* cross reference extensions: `$ccls/call` `$ccls/inheritance` `$ccls/member` `$ccls/vars` ...
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* formatting
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* hierarchies: [call (caller/callee) hierarchy](src/messages/ccls_call.cc), [inheritance (base/derived) hierarchy](src/messages/ccls_inheritance.cc), [member hierarchy](src/messages/ccls_member.cc)
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* [symbol rename](src/messages/textDocument_rename.cc)
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* [document symbols](src/messages/textDocument_documentSymbol.cc) and approximate search of [workspace symbol](src/messages/workspace_symbol.cc)
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* [hover information](src/messages/textDocument_hover.cc)
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* diagnostics and code actions (clang FixIts)
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* semantic highlighting and preprocessor skipped regions
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* semantic navigation: `$ccls/navigate`
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