/*
Language: MEL
Description: Maya Embedded Language
Author: Shuen-Huei Guan <drake.guan@gmail.com>
Category: graphics
*/

function(hljs) {
  return {
    keywords:
      'int float string vector matrix if else switch case default while do for in break ' +
      'continue global proc return about abs addAttr addAttributeEditorNodeHelp addDynamic ' +
      'addNewShelfTab addPP addPanelCategory addPrefixToName advanceToNextDrivenKey ' +
      'affectedNet affects aimConstraint air alias aliasAttr align alignCtx alignCurve ' +
      'alignSurface allViewFit ambientLight angle angleBetween animCone animCurveEditor ' +
      'animDisplay animView annotate appendStringArray applicationName applyAttrPreset ' +
      'applyTake arcLenDimContext arcLengthDimension arclen arrayMapper art3dPaintCtx ' +
      'artAttrCtx artAttrPaintVertexCtx artAttrSkinPaintCtx artAttrTool artBuildPaintMenu ' +
      'artFluidAttrCtx artPuttyCtx artSelectCtx artSetPaintCtx artUserPaintCtx assignCommand ' +
      'assignInputDevice assignViewportFactories attachCurve attachDeviceAttr attachSurface ' +
      'attrColorSliderGrp attrCompatibility attrControlGrp attrEnumOptionMenu ' +
      'attrEnumOptionMenuGrp attrFieldGrp attrFieldSliderGrp attrNavigationControlGrp ' +
      'attrPresetEditWin attributeExists attributeInfo attributeMenu attributeQuery ' +
      'autoKeyframe autoPlace bakeClip bakeFluidShading bakePartialHistory bakeResults ' +
      'bakeSimulation basename basenameEx batchRender bessel bevel bevelPlus binMembership ' +
      'bindSkin blend2 blendShape blendShapeEditor blendShapePanel blendTwoAttr blindDataType ' +
      'boneLattice boundary boxDollyCtx boxZoomCtx bufferCurve buildBookmarkMenu ' +
      'buildKeyframeMenu button buttonManip CBG cacheFile cacheFileCombine cacheFileMerge ' +
      'cacheFileTrack camera cameraView canCreateManip canvas capitalizeString catch ' +
      'catchQuiet ceil changeSubdivComponentDisplayLevel changeSubdivRegion channelBox ' +
      'character characterMap characterOutlineEditor characterize chdir checkBox checkBoxGrp ' +
      'checkDefaultRenderGlobals choice circle circularFillet clamp clear clearCache clip ' +
      'clipEditor clipEditorCurrentTimeCtx clipSchedule clipSchedulerOutliner clipTrimBefore ' +
      'closeCurve closeSurface cluster cmdFileOutput cmdScrollFieldExecuter ' +
      'cmdScrollFieldReporter cmdShell coarsenSubdivSelectionList collision color ' +
      'colorAtPoint colorEditor colorIndex colorIndexSliderGrp colorSliderButtonGrp ' +
      'colorSliderGrp columnLayout commandEcho commandLine commandPort compactHairSystem ' +
      'componentEditor compositingInterop computePolysetVolume condition cone confirmDialog ' +
      'connectAttr connectControl connectDynamic connectJoint connectionInfo constrain ' +
      'constrainValue constructionHistory container containsMultibyte contextInfo control ' +
      'convertFromOldLayers convertIffToPsd convertLightmap convertSolidTx convertTessellation ' +
      'convertUnit copyArray copyFlexor copyKey copySkinWeights cos cpButton cpCache ' +
      'cpClothSet cpCollision cpConstraint cpConvClothToMesh cpForces cpGetSolverAttr cpPanel ' +
      'cpProperty cpRigidCollisionFilter cpSeam cpSetEdit cpSetSolverAttr cpSolver ' +
      'cpSolverTypes cpTool cpUpdateClothUVs createDisplayLayer createDrawCtx createEditor ' +
      'createLayeredPsdFile createMotionField createNewShelf createNode createRenderLayer ' +
      'createSubdivRegion cross crossProduct ctxAbort ctxCompletion ctxEditMode ctxTraverse ' +
      'currentCtx currentTime currentTimeCtx currentUnit curve curveAddPtCtx ' +
      'curveCVCtx curveEPCtx curveEditorCtx curveIntersect curveMoveEPCtx curveOnSurface ' +
      'curveSketchCtx cutKey cycleCheck cylinder dagPose date defaultLightListCheckBox ' +
      'defaultNavigation defineDataServer defineVirtualDevice deformer deg_to_rad delete ' +
      'deleteAttr deleteShadingGroupsAndMaterials deleteShelfTab deleteUI deleteUnusedBrushes ' +
      'delrandstr detachCurve detachDeviceAttr detachSurface deviceEditor devicePanel dgInfo ' +
      'dgdirty dgeval dgtimer dimWhen directKeyCtx directionalLight dirmap dirname disable ' +
      'disconnectAttr disconnectJoint diskCache displacementToPoly displayAffected ' +
      'displayColor displayCull displayLevelOfDetail displayPref displayRGBColor ' +
      'displaySmoothness displayStats displayString displaySurface distanceDimContext ' +
      'distanceDimension doBlur dolly dollyCtx dopeSheetEditor dot dotProduct ' +
      'doubleProfileBirailSurface drag dragAttrContext draggerContext dropoffLocator ' +
      'duplicate duplicateCurve duplicateSurface dynCache dynControl dynExport dynExpression ' +
      'dynGlobals dynPaintEditor dynParticleCtx dynPref dynRelEdPanel dynRelEditor ' +
      'dynamicLoad editAttrLimits editDisplayLayerGlobals editDisplayLayerMembers ' +
      'editRenderLayerAdjustment editRenderLayerGlobals editRenderLayerMembers editor ' +
      'editorTemplate effector emit emitter enableDevice encodeString endString endsWith env ' +
      'equivalent equivalentTol erf error eval evalDeferred evalEcho event ' +
      'exactWorldBoundingBox exclusiveLightCheckBox exec executeForEachObject exists exp ' +
      'expression expressionEditorListen extendCurve extendSurface extrude fcheck fclose feof ' +
      'fflush fgetline fgetword file fileBrowserDialog fileDialog fileExtension fileInfo ' +
      'filetest filletCurve filter filterCurve filterExpand filterStudioImport ' +
      'findAllIntersections findAnimCurves findKeyframe findMenuItem findRelatedSkinCluster ' +
      'finder firstParentOf fitBspline flexor floatEq floatField floatFieldGrp floatScrollBar ' +
      'floatSlider floatSlider2 floatSliderButtonGrp floatSliderGrp floor flow fluidCacheInfo ' +
      'fluidEmitter fluidVoxelInfo flushUndo fmod fontDialog fopen formLayout format fprint ' +
      'frameLayout fread freeFormFillet frewind fromNativePath fwrite gamma gauss ' +
      'geometryConstraint getApplicationVersionAsFloat getAttr getClassification ' +
      'getDefaultBrush getFileList getFluidAttr getInputDeviceRange getMayaPanelTypes ' +
      'getModifiers getPanel getParticleAttr getPluginResource getenv getpid glRender ' +
      'glRenderEditor globalStitch gmatch goal gotoBindPose grabColor gradientControl ' +
      'gradientControlNoAttr graphDollyCtx graphSelectContext graphTrackCtx gravity grid ' +
      'gridLayout group groupObjectsByName HfAddAttractorToAS HfAssignAS HfBuildEqualMap ' +
      'HfBuildFurFiles HfBuildFurImages HfCancelAFR HfConnectASToHF HfCreateAttractor ' +
      'HfDeleteAS HfEditAS HfPerformCreateAS HfRemoveAttractorFromAS HfSelectAttached ' +
      'HfSelectAttractors HfUnAssignAS hardenPointCurve hardware hardwareRenderPanel ' +
      'headsUpDisplay headsUpMessage help helpLine hermite hide hilite hitTest hotBox hotkey ' +
      'hotkeyCheck hsv_to_rgb hudButton hudSlider hudSliderButton hwReflectionMap hwRender ' +
      'hwRenderLoad hyperGraph hyperPanel hyperShade hypot iconTextButton iconTextCheckBox ' +
      'iconTextRadioButton iconTextRadioCollection iconTextScrollList iconTextStaticLabel ' +
      'ikHandle ikHandleCtx ikHandleDisplayScale ikSolver ikSplineHandleCtx ikSystem ' +
      'ikSystemInfo ikfkDisplayMethod illustratorCurves image imfPlugins inheritTransform ' +
      'insertJoint insertJointCtx insertKeyCtx insertKnotCurve insertKnotSurface instance ' +
      'instanceable instancer intField intFieldGrp intScrollBar intSlider intSliderGrp ' +
      'interToUI internalVar intersect iprEngine isAnimCurve isConnected isDirty isParentOf ' +
      'isSameObject isTrue isValidObjectName isValidString isValidUiName isolateSelect ' +
      'itemFilter itemFilterAttr itemFilterRender itemFilterType joint jointCluster jointCtx ' +
      'jointDisplayScale jointLattice keyTangent keyframe keyframeOutliner ' +
      'keyframeRegionCurrentTimeCtx keyframeRegionDirectKeyCtx keyframeRegionDollyCtx ' +
      'keyframeRegionInsertKeyCtx keyframeRegionMoveKeyCtx keyframeRegionScaleKeyCtx ' +
      'keyframeRegionSelectKeyCtx keyframeRegionSetKeyCtx keyframeRegionTrackCtx ' +
      'keyframeStats lassoContext lattice latticeDeformKeyCtx launch launchImageEditor ' +
      'layerButton layeredShaderPort layeredTexturePort layout layoutDialog lightList ' +
      'lightListEditor lightListPanel lightlink lineIntersection linearPrecision linstep ' +
      'listAnimatable listAttr listCameras listConnections listDeviceAttachments listHistory ' +
      'listInputDeviceAxes listInputDeviceButtons listInputDevices listMenuAnnotation ' +
      'listNodeTypes listPanelCategories listRelatives listSets listTransforms ' +
      'listUnselected listerEditor loadFluid loadNewShelf loadPlugin ' +
      'loadPluginLanguageResources loadPrefObjects localizedPanelLabel lockNode loft log ' +
      'longNameOf lookThru ls lsThroughFilter lsType lsUI Mayatomr mag makeIdentity makeLive ' +
      'makePaintable makeRoll makeSingleSurface makeTubeOn makebot manipMoveContext ' +
      'manipMoveLimitsCtx manipOptions manipRotateContext manipRotateLimitsCtx ' +
      'manipScaleContext manipScaleLimitsCtx marker match max memory menu menuBarLayout ' +
      'menuEditor menuItem menuItemToShelf menuSet menuSetPref messageLine min minimizeApp ' +
      'mirrorJoint modelCurrentTimeCtx modelEditor modelPanel mouse movIn movOut move ' +
      'moveIKtoFK moveKeyCtx moveVertexAlongDirection multiProfileBirailSurface mute ' +
      'nParticle nameCommand nameField namespace namespaceInfo newPanelItems newton nodeCast ' +
      'nodeIconButton nodeOutliner nodePreset nodeType noise nonLinear normalConstraint ' +
      'normalize nurbsBoolean nurbsCopyUVSet nurbsCube nurbsEditUV nurbsPlane nurbsSelect ' +
      'nurbsSquare nurbsToPoly nurbsToPolygonsPref nurbsToSubdiv nurbsToSubdivPref ' +
      'nurbsUVSet nurbsViewDirectionVector objExists objectCenter objectLayer objectType ' +
      'objectTypeUI obsoleteProc oceanNurbsPreviewPlane offsetCurve offsetCurveOnSurface ' +
      'offsetSurface openGLExtension openMayaPref optionMenu optionMenuGrp optionVar orbit ' +
      'orbitCtx orientConstraint outlinerEditor outlinerPanel overrideModifier ' +
      'paintEffectsDisplay pairBlend palettePort paneLayout panel panelConfiguration ' +
      'panelHistory paramDimContext paramDimension paramLocator parent parentConstraint ' +
      'particle particleExists particleInstancer particleRenderInfo partition pasteKey ' +
      'pathAnimation pause pclose percent performanceOptions pfxstrokes pickWalk picture ' +
      'pixelMove planarSrf plane play playbackOptions playblast plugAttr plugNode pluginInfo ' +
      'pluginResourceUtil pointConstraint pointCurveConstraint pointLight pointMatrixMult ' +
      'pointOnCurve pointOnSurface pointPosition poleVectorConstraint polyAppend ' +
      'polyAppendFacetCtx polyAppendVertex polyAutoProjection polyAverageNormal ' +
      'polyAverageVertex polyBevel polyBlendColor polyBlindData polyBoolOp polyBridgeEdge ' +
      'polyCacheMonitor polyCheck polyChipOff polyClipboard polyCloseBorder polyCollapseEdge ' +
      'polyCollapseFacet polyColorBlindData polyColorDel polyColorPerVertex polyColorSet ' +
      'polyCompare polyCone polyCopyUV polyCrease polyCreaseCtx polyCreateFacet ' +
      'polyCreateFacetCtx polyCube polyCut polyCutCtx polyCylinder polyCylindricalProjection ' +
      'polyDelEdge polyDelFacet polyDelVertex polyDuplicateAndConnect polyDuplicateEdge ' +
      'polyEditUV polyEditUVShell polyEvaluate polyExtrudeEdge polyExtrudeFacet ' +
      'polyExtrudeVertex polyFlipEdge polyFlipUV polyForceUV polyGeoSampler polyHelix ' +
      'polyInfo polyInstallAction polyLayoutUV polyListComponentConversion polyMapCut ' +
      'polyMapDel polyMapSew polyMapSewMove polyMergeEdge polyMergeEdgeCtx polyMergeFacet ' +
      'polyMergeFacetCtx polyMergeUV polyMergeVertex polyMirrorFace polyMoveEdge ' +
      'polyMoveFacet polyMoveFacetUV polyMoveUV polyMoveVertex polyNormal polyNormalPerVertex ' +
      'polyNormalizeUV polyOptUvs polyOptions polyOutput polyPipe polyPlanarProjection ' +
      'polyPlane polyPlatonicSolid polyPoke polyPrimitive polyPrism polyProjection ' +
      'polyPyramid polyQuad polyQueryBlindData polyReduce polySelect polySelectConstraint ' +
      'polySelectConstraintMonitor polySelectCtx polySelectEditCtx polySeparate ' +
      'polySetToFaceNormal polySewEdge polyShortestPathCtx polySmooth polySoftEdge ' +
      'polySphere polySphericalProjection polySplit polySplitCtx polySplitEdge polySplitRing ' +
      'polySplitVertex polyStraightenUVBorder polySubdivideEdge polySubdivideFacet ' +
      'polyToSubdiv polyTorus polyTransfer polyTriangulate polyUVSet polyUnite polyWedgeFace ' +
      'popen popupMenu pose pow preloadRefEd print progressBar progressWindow projFileViewer ' +
      'projectCurve projectTangent projectionContext projectionManip promptDialog propModCtx ' +
      'propMove psdChannelOutliner psdEditTextureFile psdExport psdTextureFile putenv pwd ' +
      'python querySubdiv quit rad_to_deg radial radioButton radioButtonGrp radioCollection ' +
      'radioMenuItemCollection rampColorPort rand randomizeFollicles randstate rangeControl ' +
      'readTake rebuildCurve rebuildSurface recordAttr recordDevice redo reference ' +
      'referenceEdit referenceQuery refineSubdivSelectionList refresh refreshAE ' +
      'registerPluginResource rehash reloadImage removeJoint removeMultiInstance ' +
      'removePanelCategory rename renameAttr renameSelectionList renameUI render ' +
      'renderGlobalsNode renderInfo renderLayerButton renderLayerParent ' +
      'renderLayerPostProcess renderLayerUnparent renderManip renderPartition ' +
      'renderQualityNode renderSettings renderThumbnailUpdate renderWindowEditor ' +
      'renderWindowSelectContext renderer reorder reorderDeformers requires reroot ' +
      'resampleFluid resetAE resetPfxToPolyCamera resetTool resolutionNode retarget ' +
      'reverseCurve reverseSurface revolve rgb_to_hsv rigidBody rigidSolver roll rollCtx ' +
      'rootOf rot rotate rotationInterpolation roundConstantRadius rowColumnLayout rowLayout ' +
      'runTimeCommand runup sampleImage saveAllShelves saveAttrPreset saveFluid saveImage ' +
      'saveInitialState saveMenu savePrefObjects savePrefs saveShelf saveToolSettings scale ' +
      'scaleBrushBrightness scaleComponents scaleConstraint scaleKey scaleKeyCtx sceneEditor ' +
      'sceneUIReplacement scmh scriptCtx scriptEditorInfo scriptJob scriptNode scriptTable ' +
      'scriptToShelf scriptedPanel scriptedPanelType scrollField scrollLayout sculpt ' +
      'searchPathArray seed selLoadSettings select selectContext selectCurveCV selectKey ' +
      'selectKeyCtx selectKeyframeRegionCtx selectMode selectPref selectPriority selectType ' +
      'selectedNodes selectionConnection separator setAttr setAttrEnumResource ' +
      'setAttrMapping setAttrNiceNameResource setConstraintRestPosition ' +
      'setDefaultShadingGroup setDrivenKeyframe setDynamic setEditCtx setEditor setFluidAttr ' +
      'setFocus setInfinity setInputDeviceMapping setKeyCtx setKeyPath setKeyframe ' +
      'setKeyframeBlendshapeTargetWts setMenuMode setNodeNiceNameResource setNodeTypeFlag ' +
      'setParent setParticleAttr setPfxToPolyCamera setPluginResource setProject ' +
      'setStampDensity setStartupMessage setState setToolTo setUITemplate setXformManip sets ' +
      'shadingConnection shadingGeometryRelCtx shadingLightRelCtx shadingNetworkCompare ' +
      'shadingNode shapeCompare shelfButton shelfLayout shelfTabLayout shellField ' +
      'shortNameOf showHelp showHidden showManipCtx showSelectionInTitle ' +
      'showShadingGroupAttrEditor showWindow sign simplify sin singleProfileBirailSurface ' +
      'size sizeBytes skinCluster skinPercent smoothCurve smoothTangentSurface smoothstep ' +
      'snap2to2 snapKey snapMode snapTogetherCtx snapshot soft softMod softModCtx sort sound ' +
      'soundControl source spaceLocator sphere sphrand spotLight spotLightPreviewPort ' +
      'spreadSheetEditor spring sqrt squareSurface srtContext stackTrace startString ' +
      'startsWith stitchAndExplodeShell stitchSurface stitchSurfacePoints strcmp ' +
      'stringArrayCatenate stringArrayContains stringArrayCount stringArrayInsertAtIndex ' +
      'stringArrayIntersector stringArrayRemove stringArrayRemoveAtIndex ' +
      'stringArrayRemoveDuplicates stringArrayRemoveExact stringArrayToString ' +
      'stringToStringArray strip stripPrefixFromName stroke subdAutoProjection ' +
      'subdCleanTopology subdCollapse subdDuplicateAndConnect subdEditUV ' +
      'subdListComponentConversion subdMapCut subdMapSewMove subdMatchTopology subdMirror ' +
      'subdToBlind subdToPoly subdTransferUVsToCache subdiv subdivCrease ' +
      'subdivDisplaySmoothness substitute substituteAllString substituteGeometry substring ' +
      'surface surfaceSampler surfaceShaderList swatchDisplayPort switchTable symbolButton ' +
      'symbolCheckBox sysFile system tabLayout tan tangentConstraint texLatticeDeformContext ' +
      'texManipContext texMoveContext texMoveUVShellContext texRotateContext texScaleContext ' +
      'texSelectContext texSelectShortestPathCtx texSmudgeUVContext texWinToolCtx text ' +
      'textCurves textField textFieldButtonGrp textFieldGrp textManip textScrollList ' +
      'textToShelf textureDisplacePlane textureHairColor texturePlacementContext ' +
      'textureWindow threadCount threePointArcCtx timeControl timePort timerX toNativePath ' +
      'toggle toggleAxis toggleWindowVisibility tokenize tokenizeList tolerance tolower ' +
      'toolButton toolCollection toolDropped toolHasOptions toolPropertyWindow torus toupper ' +
      'trace track trackCtx transferAttributes transformCompare transformLimits translator ' +
      'trim trunc truncateFluidCache truncateHairCache tumble tumbleCtx turbulence ' +
      'twoPointArcCtx uiRes uiTemplate unassignInputDevice undo undoInfo ungroup uniform unit ' +
      'unloadPlugin untangleUV untitledFileName untrim upAxis updateAE userCtx uvLink ' +
      'uvSnapshot validateShelfName vectorize view2dToolCtx viewCamera viewClipPlane ' +
      'viewFit viewHeadOn viewLookAt viewManip viewPlace viewSet visor volumeAxis vortex ' +
      'waitCursor warning webBrowser webBrowserPrefs whatIs window windowPref wire ' +
      'wireContext workspace wrinkle wrinkleContext writeTake xbmLangPathList xform',
    illegal: '</',
    contains: [
      hljs.C_NUMBER_MODE,
      hljs.APOS_STRING_MODE,
      hljs.QUOTE_STRING_MODE,
      {
        className: 'string',
        begin: '`', end: '`',
        contains: [hljs.BACKSLASH_ESCAPE]
      },
      {
        className: 'variable',
        variants: [
          {begin: '\\$\\d'},
          {begin: '[\\$\\%\\@](\\^\\w\\b|#\\w+|[^\\s\\w{]|{\\w+}|\\w+)'},
          {begin: '\\*(\\^\\w\\b|#\\w+|[^\\s\\w{]|{\\w+}|\\w+)', relevance: 0}
        ]
      },
      hljs.C_LINE_COMMENT_MODE,
      hljs.C_BLOCK_COMMENT_MODE
    ]
  };
}
