feat(highlight): add C and C++ syntax highlighting#155
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Adds tree-sitter-based syntax highlighting for C (.c, .h) and C++ (.cpp, .cc, .cxx, .hpp, .hh, .hxx), following the same registration pattern as the existing Zig support. - Cargo.toml: pin tree-sitter-c and tree-sitter-cpp to 0.23 for ABI v14 compatibility with tree-sitter 0.24 - queries.rs: hand-curated C_HIGHLIGHTS and CPP_HIGHLIGHTS targeting lumen's HIGHLIGHT_NAMES capture set (comments, strings, numbers, keywords, types, functions, preprocessor, operators, punctuation; C++ also covers namespaces, templates, qualified calls, this, auto) - config.rs: register the eight extensions in CONFIGS - mod.rs: extend test_all_configs_load and add test_c_highlighting and test_cpp_highlighting (asserts namespace/template show up as keywords)
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Adds tree-sitter-based syntax highlighting for C and C++, following the same pattern as the Zig PR (#144).
Coverage
.c,.h.cpp,.cc,.cxx,.hpp,.hh,.hxx.his parsed as C to keep the C/C++ split clean; in practice this works well for real-world headers.Changes
Cargo.toml— addtree-sitter-candtree-sitter-cpp, both pinned to0.23for ABI v14 compatibility with the project'stree-sitter = "0.24"(0.24+ moved to ABI v15 and won't load under the currenttree-sitter-highlight).src/command/diff/highlight/queries.rs— hand-curatedC_HIGHLIGHTSandCPP_HIGHLIGHTSmapped to lumen's existingHIGHLIGHT_NAMEScapture set (comments, strings, numbers, keywords, types, functions, preprocessor directives, operators, punctuation). C++ also coversnamespace_identifier,qualified_identifier,template_function/template_method,this,auto, and raw string literals. Node names verified against the grammars'node-types.json.src/command/diff/highlight/config.rs— register all eight extensions inCONFIGSvia the existingload_confighelper.src/command/diff/highlight/mod.rs— extendtest_all_configs_load; addtest_c_highlightingandtest_cpp_highlighting(the C++ test assertsnamespaceandtemplateare highlighted as keywords).Verification
cargo buildcleancargo test— 128/128 pass (12/12 highlight tests including the 2 new ones)cargo clippy --all-targets— no new warnings in the highlight modulenix profile install .and ranlumen diffagainst C/C++ diffs end-to-end