)*\*\]/
+ pattern: /(^|[^\\])\[\*(?:[^\[*]|\[(?!\*)|\*(?!\])|\[\*(?:[^\[*]|\[(?!\*)|\*(?!\]))*\*\])*\*\]/,
+ lookbehind: true,
+ greedy: true
+ },
+ {
+ // Matches /* */ block comments
+ pattern: /(^|[^\\])\/\*[\s\S]*?(?:\*\/|$)/,
+ lookbehind: true,
+ greedy: true
+ },
+ {
+ // Matches # comments
+ pattern: /(^|[^\\$])#.*/,
+ lookbehind: true,
+ greedy: true
+ }
+ ],
+
+ // Handle before strings because optional arguments are surrounded by double quotes
+ 'argument': {
+ pattern: re(/\b(?:<<0>>)\s+("?)\w+\1/.source, [types], 'i'),
+ inside: {
+ 'keyword': /^\w+/
+ }
+ },
+
+ // Optional argument assignment
+ 'argument-label': {
+ pattern: /([,(][\s\\]*)\w+\s*=(?!=)/,
+ lookbehind: true,
+ inside: {
+ 'argument-name': {
+ pattern: /^\w+/,
+ alias: 'punctuation'
+ },
+ 'punctuation': /=$/
+ }
+ },
+
+ 'string': [
+ {
+ // triple double-quoted
+ pattern: /"""[\s\S]*?"""/,
+ greedy: true,
+ },
+ {
+ // single double-quoted
+ pattern: /"(?:\\(?:\r\n|[\s\S])|[^"\\\r\n])*"/,
+ greedy: true,
+ inside: {
+ 'constant': {
+ // These *are* case-sensitive!
+ pattern: /\b(?:DEFAULT_MT_MODE|(?:SCRIPT|MAINSCRIPT|PROGRAM)DIR|(?:USER|MACHINE)_(?:PLUS|CLASSIC)_PLUGINS)\b/
+ }
+ }
+ }
+ ],
+
+ // The special "last" variable that takes the value of the last implicitly returned clip
+ 'variable': /\b(?:last)\b/i,
+
+ 'boolean': /\b(?:true|false|yes|no)\b/i,
+
+ 'keyword': /\b(?:function|global|return|try|catch|if|else|while|for|__END__)\b/i,
+
+ 'constant': /\bMT_(?:NICE_FILTER|MULTI_INSTANCE|SERIALIZED|SPECIAL_MT)\b/,
+
+ // AviSynth's internal functions, filters, and properties
+ 'builtin-function': {
+ pattern: re(/\b(?:<<0>>)\b/.source, [allinternals], 'i'),
+ alias: 'function'
+ },
+
+ 'type-cast': {
+ pattern: re(/\b(?:<<0>>)(?=\s*\()/.source, [types], 'i'),
+ alias: 'keyword'
+ },
+
+ // External/user-defined filters
+ 'function': {
+ pattern: /\b[a-z_]\w*(?=\s*\()|(\.)[a-z_]\w*\b/i,
+ lookbehind: true
+ },
+
+ // Matches a \ as the first or last character on a line
+ 'line-continuation': {
+ pattern: /(^[ \t]*)\\|\\(?=[ \t]*$)/m,
+ lookbehind: true,
+ alias: 'punctuation'
+ },
+
+ 'number': /\B\$(?:[\da-f]{6}|[\da-f]{8})\b|(?:(?:\b|\B-)\d+(?:\.\d*)?\b|\B\.\d+\b)/i,
+
+ 'operator': /\+\+?|[!=<>]=?|&&|\|\||[?:*/%-]/,
+
+ 'punctuation': /[{}\[\]();,.]/
+ };
+
+ Prism.languages.avs = Prism.languages.avisynth;
+
+}(Prism));
diff --git a/components/prism-avisynth.min.js b/components/prism-avisynth.min.js
new file mode 100644
index 0000000000..4fa150c833
--- /dev/null
+++ b/components/prism-avisynth.min.js
@@ -0,0 +1 @@
+!function(e){function a(e,a,r){return RegExp(function(e,r){return e.replace(/<<(\d+)>>/g,function(e,a){return r[+a]})}(e,a),r||"")}var r="clip|int|float|string|bool|val",t=[["is(?:bool|clip|float|int|string)|defined|(?:var|(?:internal)?function)?exists?","apply|assert|default|eval|import|select|nop|undefined","set(?:memorymax|cachemode|maxcpu|workingdir|planarlegacyalignment)|opt_(?:allowfloataudio|usewaveextensible|dwchannelmask|avipadscanlines|vdubplanarhack|enable_(?:v210|y3_10_10|y3_10_16|b64a|planartopackedrgb))","hex(?:value)?|value","max|min|muldiv|floor|ceil|round|fmod|pi|exp|log(?:10)?|pow|sqrt|abs|sign|frac|rand|spline|continued(?:numerator|denominator)?","a?sinh?|a?cosh?|a?tan[2h]?","(?:bit(?:and|not|x?or|[lr]?shift[aslu]?|sh[lr]|sa[lr]|[lr]rotatel?|ro[rl]|te?st|set(?:count)?|cl(?:ea)?r|ch(?:an)?ge?))","average(?:luma|chroma[uv]|[bgr])|(?:luma|chroma[uv]|rgb|[rgb]|[yuv](?=difference(?:fromprevious|tonext)))difference(?:fromprevious|tonext)?|[yuvrgb]plane(?:median|min|max|minmaxdifference)","script(?:name(?:utf8)?|file(?:utf8)?|dir(?:utf8)?)|setlogparams|logmsg|getprocessinfo","[lu]case|str(?:toutf8|fromutf8|len|cmpi?)|(?:rev|left|right|mid|find|replace|fill)str|format|trim(?:left|right|all)|chr|ord|time","version(?:number|string)|isversionorgreater","buildpixeltype|colorspacenametopixeltype","setfiltermtmode|prefetch|addautoloaddir|on(?:cpu|cuda)"].join("|"),["has(?:audio|video)","width|height","frame(?:count|rate)|framerate(?:numerator|denominator)","is(?:field|frame)based|getparity","pixeltype|is(?:planar(?:rgba?)?|interleaved|rgb(?:24|32|48|64)?|y(?:8|u(?:y2|va?))?|yv(?:12|16|24|411)|420|422|444|packedrgb)|hasalpha|componentsize|numcomponents|bitspercomponent","audio(?:rate|duration|length(?:[fs]|lo|hi)?|channels|bits)|isaudio(?:float|int)"].join("|"),["avi(?:file)?source|opendmlsource|directshowsource|image(?:reader|source|sourceanim)|segmented(?:avisource|directshowsource)|wavsource","coloryuv|convertto(?:RGB(?:24|32|48|64)|(?:planar)?RGBA?|Y8?|YV(?:12|16|24|411)|YUVA?(?:444|422|420|411)|YUY2)|convertbacktoyuy2|fixluminance|gr[ae]yscale|invert|levels|limiter|mergea?rgb|merge(?:luma|chroma)|rgbadjust|show(?:red|green|blue|alpha)|swapuv|tweak|[uv]toy8?|ytouv","(?:colorkey|reset)mask|mask(?:hs)?|layer|merge|overlay|subtract","addborders|crop(?:bottom)?|flip(?:horizontal|vertical)|letterbox|(?:horizontal|vertical)?reduceby2|(?:bicubic|bilinear|blackman|gauss|lanczos|lanczos4|point|sinc|spline(?:16|36|64))resize|skewrows|turn(?:left|right|180)","blur|sharpen|generalconvolution|(?:spatial|temporal)soften|fixbrokenchromaupsampling","trim|(?:un)?alignedsplice|(?:assume|assumescaled|change|convert)FPS|(?:delete|duplicate)frame|dissolve|fade(?:in|out|io)[02]?|freezeframe|interleave|loop|reverse|select(?:even|odd|(?:range)?every)","assume(?:frame|field)based|assume[bt]ff|bob|complementparity|doubleweave|peculiarblend|pulldown|separate(?:columns|rows|fields)|swapfields|weave(?:columns|rows)?","amplify(?:db)?|assumesamplerate|audiodub(?:ex)?|audiotrim|convertaudioto(?:(?:8|16|24|32)bit|float)|converttomono|delayaudio|ensurevbrmp3sync|get(?:left|right)?channel|kill(?:audio|video)|mergechannels|mixaudio|monotostereo|normalize|resampleaudio|supereq|ssrc|timestretch","conditional(?:filter|select|reader)|frameevaluate|scriptclip|writefile(?:if|start|end)?|animate|applyrange|tcp(?:server|source)","imagewriter","subtitle|blankclip|blackness|colorbars(?:hd)?|compare|dumpfiltergraph|setgraphanalysis|echo|histogram|info|messageclip|preroll|showfiveversions|show(?:framenumber|smpte|time)|stack(?:horizontal|vertical)|tone|version"].join("|")].join("|");e.languages.avisynth={comment:[{pattern:/(^|[^\\])\[\*(?:[^\[*]|\[(?!\*)|\*(?!\])|\[\*(?:[^\[*]|\[(?!\*)|\*(?!\]))*\*\])*\*\]/,lookbehind:!0,greedy:!0},{pattern:/(^|[^\\])\/\*[\s\S]*?(?:\*\/|$)/,lookbehind:!0,greedy:!0},{pattern:/(^|[^\\$])#.*/,lookbehind:!0,greedy:!0}],argument:{pattern:a('\\b(?:<<0>>)\\s+("?)\\w+\\1',[r],"i"),inside:{keyword:/^\w+/}},"argument-label":{pattern:/([,(][\s\\]*)\w+\s*=(?!=)/,lookbehind:!0,inside:{"argument-name":{pattern:/^\w+/,alias:"punctuation"},punctuation:/=$/}},string:[{pattern:/"""[\s\S]*?"""/,greedy:!0},{pattern:/"(?:\\(?:\r\n|[\s\S])|[^"\\\r\n])*"/,greedy:!0,inside:{constant:{pattern:/\b(?:DEFAULT_MT_MODE|(?:SCRIPT|MAINSCRIPT|PROGRAM)DIR|(?:USER|MACHINE)_(?:PLUS|CLASSIC)_PLUGINS)\b/}}}],variable:/\b(?:last)\b/i,boolean:/\b(?:true|false|yes|no)\b/i,keyword:/\b(?:function|global|return|try|catch|if|else|while|for|__END__)\b/i,constant:/\bMT_(?:NICE_FILTER|MULTI_INSTANCE|SERIALIZED|SPECIAL_MT)\b/,"builtin-function":{pattern:a("\\b(?:<<0>>)\\b",[t],"i"),alias:"function"},"type-cast":{pattern:a("\\b(?:<<0>>)(?=\\s*\\()",[r],"i"),alias:"keyword"},function:{pattern:/\b[a-z_]\w*(?=\s*\()|(\.)[a-z_]\w*\b/i,lookbehind:!0},"line-continuation":{pattern:/(^[ \t]*)\\|\\(?=[ \t]*$)/m,lookbehind:!0,alias:"punctuation"},number:/\B\$(?:[\da-f]{6}|[\da-f]{8})\b|(?:(?:\b|\B-)\d+(?:\.\d*)?\b|\B\.\d+\b)/i,operator:/\+\+?|[!=<>]=?|&&|\|\||[?:*/%-]/,punctuation:/[{}\[\]();,.]/},e.languages.avs=e.languages.avisynth}(Prism);
\ No newline at end of file
diff --git a/examples/prism-avisynth.html b/examples/prism-avisynth.html
new file mode 100644
index 0000000000..e78fecd9e9
--- /dev/null
+++ b/examples/prism-avisynth.html
@@ -0,0 +1,24 @@
+Full Example
+/*
+ * Example AviSynth script for PrismJS demonstration.
+ * By Zinfidel
+ */
+
+SetFilterMTMode("DEFAULT_MT_MODE", MT_MULTI_INSTANCE)
+AddAutoloadDir("MAINSCRIPTDIR/programs/plugins")
+
+# Multiplies clip size and changes aspect ratio to 4:3
+function CorrectAspectRatio(clip c, int scaleFactor, bool "useNearestNeighbor") {
+ useNearestNeighbor = default(useNearestNeighbor, false)
+ stretchFactor = (c.Height * (4 / 3)) / c.Width
+
+ return useNearestNeighbor \
+ ? c.PointResize(c.Width * scaleFactor * stretchFactor, c.Height * scaleFactor) \
+ : c.Lanczos4Resize(c.Width * scaleFactor * stretchFactor, c.Height * scaleFactor)
+}
+
+AviSource("myclip.avi")
+last.CorrectAspectRatio(3, yes)
+
+
+Prefetch(4)
\ No newline at end of file
diff --git a/plugins/autoloader/prism-autoloader.js b/plugins/autoloader/prism-autoloader.js
index ddefe74218..fe1b3b0b04 100644
--- a/plugins/autoloader/prism-autoloader.js
+++ b/plugins/autoloader/prism-autoloader.js
@@ -172,6 +172,7 @@
"js": "javascript",
"g4": "antlr4",
"adoc": "asciidoc",
+ "avs": "avisynth",
"avdl": "avro-idl",
"shell": "bash",
"shortcode": "bbcode",
diff --git a/plugins/autoloader/prism-autoloader.min.js b/plugins/autoloader/prism-autoloader.min.js
index d5ca7c04dd..29790e15d7 100644
--- a/plugins/autoloader/prism-autoloader.min.js
+++ b/plugins/autoloader/prism-autoloader.min.js
@@ -1 +1 @@
-!function(){if("undefined"!=typeof Prism&&"undefined"!=typeof document){var l={javascript:"clike",actionscript:"javascript",apex:["clike","sql"],arduino:"cpp",aspnet:["markup","csharp"],birb:"clike",bison:"c",c:"clike",csharp:"clike",cpp:"c",cfscript:"clike",chaiscript:["clike","cpp"],coffeescript:"javascript",crystal:"ruby","css-extras":"css",d:"clike",dart:"clike",django:"markup-templating",ejs:["javascript","markup-templating"],etlua:["lua","markup-templating"],erb:["ruby","markup-templating"],fsharp:"clike","firestore-security-rules":"clike",flow:"javascript",ftl:"markup-templating",gml:"clike",glsl:"c",go:"clike",groovy:"clike",haml:"ruby",handlebars:"markup-templating",haxe:"clike",hlsl:"c",idris:"haskell",java:"clike",javadoc:["markup","java","javadoclike"],jolie:"clike",jsdoc:["javascript","javadoclike","typescript"],"js-extras":"javascript",json5:"json",jsonp:"json","js-templates":"javascript",kotlin:"clike",latte:["clike","markup-templating","php"],less:"css",lilypond:"scheme",liquid:"markup-templating",markdown:"markup","markup-templating":"markup",mongodb:"javascript",n4js:"javascript",objectivec:"c",opencl:"c",parser:"markup",php:"markup-templating",phpdoc:["php","javadoclike"],"php-extras":"php",plsql:"sql",processing:"clike",protobuf:"clike",pug:["markup","javascript"],purebasic:"clike",purescript:"haskell",qsharp:"clike",qml:"javascript",qore:"clike",racket:"scheme",jsx:["markup","javascript"],tsx:["jsx","typescript"],reason:"clike",ruby:"clike",sass:"css",scss:"css",scala:"java","shell-session":"bash",smarty:"markup-templating",solidity:"clike",soy:"markup-templating",sparql:"turtle",sqf:"clike",squirrel:"clike","t4-cs":["t4-templating","csharp"],"t4-vb":["t4-templating","vbnet"],tap:"yaml",tt2:["clike","markup-templating"],textile:"markup",twig:"markup",typescript:"javascript",v:"clike",vala:"clike",vbnet:"basic",velocity:"markup",wiki:"markup",xeora:"markup","xml-doc":"markup",xquery:"markup"},n={html:"markup",xml:"markup",svg:"markup",mathml:"markup",ssml:"markup",atom:"markup",rss:"markup",js:"javascript",g4:"antlr4",adoc:"asciidoc",avdl:"avro-idl",shell:"bash",shortcode:"bbcode",rbnf:"bnf",oscript:"bsl",cs:"csharp",dotnet:"csharp",cfc:"cfscript",coffee:"coffeescript",conc:"concurnas",jinja2:"django","dns-zone":"dns-zone-file",dockerfile:"docker",gv:"dot",eta:"ejs",xlsx:"excel-formula",xls:"excel-formula",gamemakerlanguage:"gml",gni:"gn",hbs:"handlebars",hs:"haskell",idr:"idris",gitignore:"ignore",hgignore:"ignore",npmignore:"ignore",webmanifest:"json",kt:"kotlin",kts:"kotlin",kum:"kumir",tex:"latex",context:"latex",ly:"lilypond",emacs:"lisp",elisp:"lisp","emacs-lisp":"lisp",md:"markdown",moon:"moonscript",n4jsd:"n4js",nani:"naniscript",objc:"objectivec",qasm:"openqasm",objectpascal:"pascal",px:"pcaxis",pcode:"peoplecode",pq:"powerquery",mscript:"powerquery",pbfasm:"purebasic",purs:"purescript",py:"python",qs:"qsharp",rkt:"racket",rpy:"renpy",robot:"robotframework",rb:"ruby","sh-session":"shell-session",shellsession:"shell-session",smlnj:"sml",sol:"solidity",sln:"solution-file",rq:"sparql",t4:"t4-cs",trig:"turtle",ts:"typescript",tsconfig:"typoscript",uscript:"unrealscript",uc:"unrealscript",url:"uri",vb:"visual-basic",vba:"visual-basic",mathematica:"wolfram",nb:"wolfram",wl:"wolfram",xeoracube:"xeora",yml:"yaml"},p={},e="components/",a=Prism.util.currentScript();if(a){var r=/\bplugins\/autoloader\/prism-autoloader\.(?:min\.)?js(?:\?[^\r\n/]*)?$/i,s=/(^|\/)[\w-]+\.(?:min\.)?js(?:\?[^\r\n/]*)?$/i,i=a.getAttribute("data-autoloader-path");if(null!=i)e=i.trim().replace(/\/?$/,"/");else{var t=a.src;r.test(t)?e=t.replace(r,"components/"):s.test(t)&&(e=t.replace(s,"$1components/"))}}var o=Prism.plugins.autoloader={languages_path:e,use_minified:!0,loadLanguages:m};Prism.hooks.add("complete",function(e){var a=e.element,r=e.language;if(a&&r&&"none"!==r){var s=function(e){var a=(e.getAttribute("data-dependencies")||"").trim();if(!a){var r=e.parentElement;r&&"pre"===r.tagName.toLowerCase()&&(a=(r.getAttribute("data-dependencies")||"").trim())}return a?a.split(/\s*,\s*/g):[]}(a);/^diff-./i.test(r)?(s.push("diff"),s.push(r.substr("diff-".length))):s.push(r),s.every(u)||m(s,function(){Prism.highlightElement(a)})}})}function u(e){if(0<=e.indexOf("!"))return!1;if((e=n[e]||e)in Prism.languages)return!0;var a=p[e];return a&&!a.error&&!1===a.loading}function m(e,a,r){"string"==typeof e&&(e=[e]);var s=e.length,i=0,t=!1;function c(){t||++i===s&&a&&a(e)}0!==s?e.forEach(function(e){!function(a,r,s){var i=0<=a.indexOf("!");function e(){var e=p[a];e||(e=p[a]={callbacks:[]}),e.callbacks.push({success:r,error:s}),!i&&u(a)?k(a,"success"):!i&&e.error?k(a,"error"):!i&&e.loading||(e.loading=!0,e.error=!1,function(e,a,r){var s=document.createElement("script");s.src=e,s.async=!0,s.onload=function(){document.body.removeChild(s),a&&a()},s.onerror=function(){document.body.removeChild(s),r&&r()},document.body.appendChild(s)}(function(e){return o.languages_path+"prism-"+e+(o.use_minified?".min":"")+".js"}(a),function(){e.loading=!1,k(a,"success")},function(){e.loading=!1,e.error=!0,k(a,"error")}))}a=a.replace("!",""),a=n[a]||a;var t=l[a];t&&t.length?m(t,e,s):e()}(e,c,function(){t||(t=!0,r&&r(e))})}):a&&setTimeout(a,0)}function k(e,a){if(p[e]){for(var r=p[e].callbacks,s=0,i=r.length;s
+>=
+=
+==
+&&
+||
+?
+:
+%
+/
+*
+
+$abcdef
+$89abcdef
+123.89032
+.902834
+
+$9abcdef
+a$123456a
+
+()
+{}
+[]
+;
+,
+.
+\
+
+\ 1.0 \
+
+1.0 \ 1.0
+
+----------------------------------------------------
+
+[
+ ["operator", "+"],
+ ["operator", "++"],
+ ["operator", "-"],
+ ["operator", "!"],
+ ["operator", "!="],
+ ["operator", "<"],
+ ["operator", "<="],
+ ["operator", ">"],
+ ["operator", ">="],
+ ["operator", "="],
+ ["operator", "=="],
+ ["operator", "&&"],
+ ["operator", "||"],
+ ["operator", "?"],
+ ["operator", ":"],
+ ["operator", "%"],
+ ["operator", "/"],
+ ["operator", "*"],
+
+ ["number", "$abcdef"],
+ ["number", "$89abcdef"],
+ ["number", "123.89032"],
+ ["number", ".902834"],
+
+ "\r\n\r\n$9abcdef\r\na$123456a\r\n\r\n",
+
+ ["punctuation", "("], ["punctuation", ")"],
+ ["punctuation", "{"], ["punctuation", "}"],
+ ["punctuation", "["], ["punctuation", "]"],
+ ["punctuation", ";"],
+ ["punctuation", ","],
+ ["punctuation", "."],
+ ["line-continuation", "\\"],
+
+ ["line-continuation", "\\"], ["number", "1.0"], ["line-continuation", "\\"],
+
+ ["number", "1.0"], " \\ ", ["number", "1.0"]
+]
+
+----------------------------------------------------
+
+Numbers can be specified in decimal form, with or without a leading value. So 0.0 and .0 both work.
+Numbers can also be specified as 6- or 8- digit hexadecimal strings for colors. They begin with a $.
+Numbers can not be bounded by words.
+
+Line continuations must be either the first or last character in a line, less some whitespace.
diff --git a/tests/languages/avisynth/types_arguments_feature.test b/tests/languages/avisynth/types_arguments_feature.test
new file mode 100644
index 0000000000..aa1660b227
--- /dev/null
+++ b/tests/languages/avisynth/types_arguments_feature.test
@@ -0,0 +1,119 @@
+function test(clip input, int interleavedFields, float precision, string "floatingDesync", bool "useQTGMC", val "chromaNoise")
+{
+ castTest = clip(chromaNoise)
+ castTest = int(chromaNoise)
+ castTest = float(chromaNoise)
+ castTest = string(chromaNoise)
+ castTest = bool(chromaNoise)
+ castTest = val(chromaNoise)
+
+ return interleavedClip
+}
+
+test(5, 0.5, floatingDesync="progressive")
+
+----------------------------------------------------
+
+[
+ ["keyword", "function"],
+ ["function", "test"],
+ ["punctuation", "("],
+ ["argument", [
+ ["keyword", "clip"],
+ " input"
+ ]],
+ ["punctuation", ","],
+ ["argument", [
+ ["keyword", "int"],
+ " interleavedFields"
+ ]],
+ ["punctuation", ","],
+ ["argument", [
+ ["keyword", "float"],
+ " precision"
+ ]],
+ ["punctuation", ","],
+ ["argument", [
+ ["keyword", "string"],
+ " \"floatingDesync\""
+ ]],
+ ["punctuation", ","],
+ ["argument", [
+ ["keyword", "bool"],
+ " \"useQTGMC\""
+ ]],
+ ["punctuation", ","],
+ ["argument", [
+ ["keyword", "val"],
+ " \"chromaNoise\""
+ ]],
+ ["punctuation", ")"],
+
+ ["punctuation", "{"],
+
+ "\r\n\tcastTest ",
+ ["operator", "="],
+ ["type-cast", "clip"],
+ ["punctuation", "("],
+ "chromaNoise",
+ ["punctuation", ")"],
+
+ "\r\n\tcastTest ",
+ ["operator", "="],
+ ["type-cast", "int"],
+ ["punctuation", "("],
+ "chromaNoise",
+ ["punctuation", ")"],
+
+ "\r\n\tcastTest ",
+ ["operator", "="],
+ ["type-cast", "float"],
+ ["punctuation", "("],
+ "chromaNoise",
+ ["punctuation", ")"],
+
+ "\r\n\tcastTest ",
+ ["operator", "="],
+ ["type-cast", "string"],
+ ["punctuation", "("],
+ "chromaNoise",
+ ["punctuation", ")"],
+
+ "\r\n\tcastTest ",
+ ["operator", "="],
+ ["type-cast", "bool"],
+ ["punctuation", "("],
+ "chromaNoise",
+ ["punctuation", ")"],
+
+ "\r\n\tcastTest ",
+ ["operator", "="],
+ ["type-cast", "val"],
+ ["punctuation", "("],
+ "chromaNoise",
+ ["punctuation", ")"],
+
+ ["keyword", "return"], " interleavedClip\r\n",
+ ["punctuation", "}"],
+
+ ["function", "test"],
+ ["punctuation", "("],
+ ["number", "5"],
+ ["punctuation", ","],
+ ["number", "0.5"],
+ ["punctuation", ","],
+ ["argument-label", [
+ ["argument-name", "floatingDesync"],
+ ["punctuation", "="]
+ ]],
+ ["string", ["\"progressive\""]],
+ ["punctuation", ")"]
+]
+
+----------------------------------------------------
+
+Optional arguments check for preceeding types to match before getting matched as a string, and should not be matched as strings.
+Incidental names of types in an arguments list (such as "interleavedFields" containing "int") should not get highlighted.
+Types can be used as casts, and should not be highlighted as user-functions.
+Incidental names of types elsewhere (such as "interleavedClip" in a function body) should not get highlighted.
+Explicitly-named optional arguments in function calls get lowlighted (including the '=').
diff --git a/tests/languages/avisynth/userfunctions_feature.test b/tests/languages/avisynth/userfunctions_feature.test
new file mode 100644
index 0000000000..d6226cd996
--- /dev/null
+++ b/tests/languages/avisynth/userfunctions_feature.test
@@ -0,0 +1,53 @@
+function CustomUserFunction() {
+
+QTGMC()
+last.QTGMC
+last.QTGMC()
+
+QTGMC
+1func()
+last.1func
+last.1func()
+
+----------------------------------------------------
+
+[
+ ["keyword", "function"],
+ ["function", "CustomUserFunction"],
+ ["punctuation", "("],
+ ["punctuation", ")"],
+ ["punctuation", "{"],
+
+ ["function", "QTGMC"],
+ ["punctuation", "("],
+ ["punctuation", ")"],
+
+ ["variable", "last"],
+ ["punctuation", "."],
+ ["function", "QTGMC"],
+
+ ["variable", "last"],
+ ["punctuation", "."],
+ ["function", "QTGMC"],
+ ["punctuation", "("],
+ ["punctuation", ")"],
+
+ "\r\n\r\nQTGMC\r\n1func",
+ ["punctuation", "("],
+ ["punctuation", ")"],
+
+ ["variable", "last"],
+ ["punctuation", "."],
+ "1func\r\n",
+
+ ["variable", "last"],
+ ["punctuation", "."],
+ "1func",
+ ["punctuation", "("],
+ ["punctuation", ")"]
+]
+
+----------------------------------------------------
+
+Valid identifiers (starts with [a-zA-Z_]) proceeding a '.', preceeding a '(', or both are user/external functions.
+User/external functions that don't match the above are technically valid but indistinguisable from variables.