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/usr/lib/nodejs/highlight/glsl.js is in node-highlight 7.4+ds-1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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module.exports = function(hljs) {
  return {
    keywords: {
      keyword:
        'atomic_uint attribute bool break bvec2 bvec3 bvec4 case centroid coherent const continue default ' +
        'discard dmat2 dmat2x2 dmat2x3 dmat2x4 dmat3 dmat3x2 dmat3x3 dmat3x4 dmat4 dmat4x2 dmat4x3 ' +
        'dmat4x4 do double dvec2 dvec3 dvec4 else flat float for highp if iimage1D iimage1DArray ' +
        'iimage2D iimage2DArray iimage2DMS iimage2DMSArray iimage2DRect iimage3D iimageBuffer iimageCube ' +
        'iimageCubeArray image1D image1DArray image2D image2DArray image2DMS image2DMSArray image2DRect ' +
        'image3D imageBuffer imageCube imageCubeArray in inout int invariant isampler1D isampler1DArray ' +
        'isampler2D isampler2DArray isampler2DMS isampler2DMSArray isampler2DRect isampler3D isamplerBuffer ' +
        'isamplerCube isamplerCubeArray ivec2 ivec3 ivec4 layout lowp mat2 mat2x2 mat2x3 mat2x4 mat3 mat3x2 ' +
        'mat3x3 mat3x4 mat4 mat4x2 mat4x3 mat4x4 mediump noperspective out patch precision readonly restrict ' +
        'return sample sampler1D sampler1DArray sampler1DArrayShadow sampler1DShadow sampler2D sampler2DArray ' +
        'sampler2DArrayShadow sampler2DMS sampler2DMSArray sampler2DRect sampler2DRectShadow sampler2DShadow ' +
        'sampler3D samplerBuffer samplerCube samplerCubeArray samplerCubeArrayShadow samplerCubeShadow smooth ' +
        'struct subroutine switch uimage1D uimage1DArray uimage2D uimage2DArray uimage2DMS uimage2DMSArray ' +
        'uimage2DRect uimage3D uimageBuffer uimageCube uimageCubeArray uint uniform usampler1D usampler1DArray ' +
        'usampler2D usampler2DArray usampler2DMS usampler2DMSArray usampler2DRect usampler3D usamplerBuffer ' +
        'usamplerCube usamplerCubeArray uvec2 uvec3 uvec4 varying vec2 vec3 vec4 void volatile while writeonly',
      built_in:
        'gl_BackColor gl_BackLightModelProduct gl_BackLightProduct gl_BackMaterial ' +
        'gl_BackSecondaryColor gl_ClipDistance gl_ClipPlane gl_ClipVertex gl_Color ' +
        'gl_DepthRange gl_EyePlaneQ gl_EyePlaneR gl_EyePlaneS gl_EyePlaneT gl_Fog gl_FogCoord ' +
        'gl_FogFragCoord gl_FragColor gl_FragCoord gl_FragData gl_FragDepth gl_FrontColor ' +
        'gl_FrontFacing gl_FrontLightModelProduct gl_FrontLightProduct gl_FrontMaterial ' +
        'gl_FrontSecondaryColor gl_InstanceID gl_InvocationID gl_Layer gl_LightModel ' +
        'gl_LightSource gl_MaxAtomicCounterBindings gl_MaxAtomicCounterBufferSize ' +
        'gl_MaxClipDistances gl_MaxClipPlanes gl_MaxCombinedAtomicCounterBuffers ' +
        'gl_MaxCombinedAtomicCounters gl_MaxCombinedImageUniforms gl_MaxCombinedImageUnitsAndFragmentOutputs ' +
        'gl_MaxCombinedTextureImageUnits gl_MaxDrawBuffers gl_MaxFragmentAtomicCounterBuffers ' +
        'gl_MaxFragmentAtomicCounters gl_MaxFragmentImageUniforms gl_MaxFragmentInputComponents ' +
        'gl_MaxFragmentUniformComponents gl_MaxFragmentUniformVectors gl_MaxGeometryAtomicCounterBuffers ' +
        'gl_MaxGeometryAtomicCounters gl_MaxGeometryImageUniforms gl_MaxGeometryInputComponents ' +
        'gl_MaxGeometryOutputComponents gl_MaxGeometryOutputVertices gl_MaxGeometryTextureImageUnits ' +
        'gl_MaxGeometryTotalOutputComponents gl_MaxGeometryUniformComponents gl_MaxGeometryVaryingComponents ' +
        'gl_MaxImageSamples gl_MaxImageUnits gl_MaxLights gl_MaxPatchVertices gl_MaxProgramTexelOffset ' +
        'gl_MaxTessControlAtomicCounterBuffers gl_MaxTessControlAtomicCounters gl_MaxTessControlImageUniforms ' +
        'gl_MaxTessControlInputComponents gl_MaxTessControlOutputComponents gl_MaxTessControlTextureImageUnits ' +
        'gl_MaxTessControlTotalOutputComponents gl_MaxTessControlUniformComponents ' +
        'gl_MaxTessEvaluationAtomicCounterBuffers gl_MaxTessEvaluationAtomicCounters ' +
        'gl_MaxTessEvaluationImageUniforms gl_MaxTessEvaluationInputComponents gl_MaxTessEvaluationOutputComponents ' +
        'gl_MaxTessEvaluationTextureImageUnits gl_MaxTessEvaluationUniformComponents ' +
        'gl_MaxTessGenLevel gl_MaxTessPatchComponents gl_MaxTextureCoords gl_MaxTextureImageUnits ' +
        'gl_MaxTextureUnits gl_MaxVaryingComponents gl_MaxVaryingFloats gl_MaxVaryingVectors ' +
        'gl_MaxVertexAtomicCounterBuffers gl_MaxVertexAtomicCounters gl_MaxVertexAttribs ' +
        'gl_MaxVertexImageUniforms gl_MaxVertexOutputComponents gl_MaxVertexTextureImageUnits ' +
        'gl_MaxVertexUniformComponents gl_MaxVertexUniformVectors gl_MaxViewports gl_MinProgramTexelOffset'+
        'gl_ModelViewMatrix gl_ModelViewMatrixInverse gl_ModelViewMatrixInverseTranspose ' +
        'gl_ModelViewMatrixTranspose gl_ModelViewProjectionMatrix gl_ModelViewProjectionMatrixInverse ' +
        'gl_ModelViewProjectionMatrixInverseTranspose gl_ModelViewProjectionMatrixTranspose ' +
        'gl_MultiTexCoord0 gl_MultiTexCoord1 gl_MultiTexCoord2 gl_MultiTexCoord3 gl_MultiTexCoord4 ' +
        'gl_MultiTexCoord5 gl_MultiTexCoord6 gl_MultiTexCoord7 gl_Normal gl_NormalMatrix ' +
        'gl_NormalScale gl_ObjectPlaneQ gl_ObjectPlaneR gl_ObjectPlaneS gl_ObjectPlaneT gl_PatchVerticesIn ' +
        'gl_PerVertex gl_Point gl_PointCoord gl_PointSize gl_Position gl_PrimitiveID gl_PrimitiveIDIn ' +
        'gl_ProjectionMatrix gl_ProjectionMatrixInverse gl_ProjectionMatrixInverseTranspose ' +
        'gl_ProjectionMatrixTranspose gl_SampleID gl_SampleMask gl_SampleMaskIn gl_SamplePosition ' +
        'gl_SecondaryColor gl_TessCoord gl_TessLevelInner gl_TessLevelOuter gl_TexCoord gl_TextureEnvColor ' +
        'gl_TextureMatrixInverseTranspose gl_TextureMatrixTranspose gl_Vertex gl_VertexID ' +
        'gl_ViewportIndex gl_in gl_out EmitStreamVertex EmitVertex EndPrimitive EndStreamPrimitive ' +
        'abs acos acosh all any asin asinh atan atanh atomicCounter atomicCounterDecrement ' +
        'atomicCounterIncrement barrier bitCount bitfieldExtract bitfieldInsert bitfieldReverse ' +
        'ceil clamp cos cosh cross dFdx dFdy degrees determinant distance dot equal exp exp2 faceforward ' +
        'findLSB findMSB floatBitsToInt floatBitsToUint floor fma fract frexp ftransform fwidth greaterThan ' +
        'greaterThanEqual imageAtomicAdd imageAtomicAnd imageAtomicCompSwap imageAtomicExchange ' +
        'imageAtomicMax imageAtomicMin imageAtomicOr imageAtomicXor imageLoad imageStore imulExtended ' +
        'intBitsToFloat interpolateAtCentroid interpolateAtOffset interpolateAtSample inverse inversesqrt ' +
        'isinf isnan ldexp length lessThan lessThanEqual log log2 matrixCompMult max memoryBarrier ' +
        'min mix mod modf noise1 noise2 noise3 noise4 normalize not notEqual outerProduct packDouble2x32 ' +
        'packHalf2x16 packSnorm2x16 packSnorm4x8 packUnorm2x16 packUnorm4x8 pow radians reflect refract ' +
        'round roundEven shadow1D shadow1DLod shadow1DProj shadow1DProjLod shadow2D shadow2DLod shadow2DProj ' +
        'shadow2DProjLod sign sin sinh smoothstep sqrt step tan tanh texelFetch texelFetchOffset texture ' +
        'texture1D texture1DLod texture1DProj texture1DProjLod texture2D texture2DLod texture2DProj ' +
        'texture2DProjLod texture3D texture3DLod texture3DProj texture3DProjLod textureCube textureCubeLod ' +
        'textureGather textureGatherOffset textureGatherOffsets textureGrad textureGradOffset textureLod ' +
        'textureLodOffset textureOffset textureProj textureProjGrad textureProjGradOffset textureProjLod ' +
        'textureProjLodOffset textureProjOffset textureQueryLod textureSize transpose trunc uaddCarry ' +
        'uintBitsToFloat umulExtended unpackDouble2x32 unpackHalf2x16 unpackSnorm2x16 unpackSnorm4x8 ' +
        'unpackUnorm2x16 unpackUnorm4x8 usubBorrow gl_TextureMatrix gl_TextureMatrixInverse',
      literal: 'true false'
    },
    illegal: '"',
    contains: [
      hljs.C_LINE_COMMENT_MODE,
      hljs.C_BLOCK_COMMENT_MODE,
      hljs.C_NUMBER_MODE,
      {
        className: 'preprocessor',
        begin: '#', end: '$'
      }
    ]
  };
};