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Add MoonScript lexer (#1091)
This change... * Generates a MoonScript lexer with the `pygments2chroma_xml.py` script using Pygments version 2.19.1 * Replaces `rexexp2`-incompatible Python-style patterns with [compatible ones][1]: - Capture group pattern `?P<name>` with .NET-style `?<name>` - Named back reference `?P=name` with ECMAScript-style `\k<name>` * Removes `and`, `or`, and `not` from the Keyword rule, since they are also listed under the OperatorWord rule * Fixes incorrect string escape rules discovered while writing the test data * Adds test data for the lexer [1]: <https://github.com/dlclark/regexp2?tab=readme-ov-file#compare-regexp-and-regexp2>
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‎lexers/embedded/moonscript.xml‎

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<lexer>
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<config>
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<name>MoonScript</name>
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<alias>moonscript</alias>
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<alias>moon</alias>
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<filename>*.moon</filename>
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<mime_type>text/x-moonscript</mime_type>
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<mime_type>application/x-moonscript</mime_type>
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</config>
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<rules>
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<state name="root">
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<rule pattern="#!(.*?)$"><token type="CommentPreproc"/></rule>
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<rule><push state="base"/></rule>
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</state>
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<state name="base">
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<rule pattern="--.*$"><token type="CommentSingle"/></rule>
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<rule pattern="(?i)(\d*\.\d+|\d+\.\d*)(e[+-]?\d+)?"><token type="LiteralNumberFloat"/></rule>
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<rule pattern="(?i)\d+e[+-]?\d+"><token type="LiteralNumberFloat"/></rule>
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<rule pattern="(?i)0x[0-9a-f]*"><token type="LiteralNumberHex"/></rule>
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<rule pattern="\d+"><token type="LiteralNumberInteger"/></rule>
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<rule pattern="\n"><token type="TextWhitespace"/></rule>
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<rule pattern="[^\S\n]+"><token type="Text"/></rule>
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<rule pattern="(?s)\[(=*)\[.*?\]\1\]"><token type="LiteralString"/></rule>
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<rule pattern="(-&gt;|=&gt;)"><token type="NameFunction"/></rule>
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<rule pattern=":[a-zA-Z_]\w*"><token type="NameVariable"/></rule>
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<rule pattern="(==|!=|~=|&lt;=|&gt;=|\.\.\.|\.\.|[=+\-*/%^&lt;&gt;#!.\\:])"><token type="Operator"/></rule>
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<rule pattern="[;,]"><token type="Punctuation"/></rule>
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<rule pattern="[\[\]{}()]"><token type="KeywordType"/></rule>
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<rule pattern="[a-zA-Z_]\w*:"><token type="NameVariable"/></rule>
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<rule pattern="(class|extends|if|then|super|do|with|import|export|while|elseif|return|for|in|from|when|using|else|switch|break)\b"><token type="Keyword"/></rule>
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<rule pattern="(true|false|nil)\b"><token type="KeywordConstant"/></rule>
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<rule pattern="(and|or|not)\b"><token type="OperatorWord"/></rule>
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<rule pattern="(self)\b"><token type="NameBuiltinPseudo"/></rule>
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<rule pattern="@@?([a-zA-Z_]\w*)?"><token type="NameVariableClass"/></rule>
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<rule pattern="[A-Z]\w*"><token type="NameClass"/></rule>
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<rule pattern="(_G|_VERSION|assert|collectgarbage|dofile|error|getmetatable|ipairs|load|loadfile|next|pairs|pcall|print|rawequal|rawget|rawlen|rawset|select|setmetatable|tonumber|tostring|type|warn|xpcall|bit32\.arshift|bit32\.band|bit32\.bnot|bit32\.bor|bit32\.btest|bit32\.bxor|bit32\.extract|bit32\.lrotate|bit32\.lshift|bit32\.replace|bit32\.rrotate|bit32\.rshift|coroutine\.close|coroutine\.create|coroutine\.isyieldable|coroutine\.resume|coroutine\.running|coroutine\.status|coroutine\.wrap|coroutine\.yield|debug\.debug|debug\.gethook|debug\.getinfo|debug\.getlocal|debug\.getmetatable|debug\.getregistry|debug\.getupvalue|debug\.getuservalue|debug\.sethook|debug\.setlocal|debug\.setmetatable|debug\.setupvalue|debug\.setuservalue|debug\.traceback|debug\.upvalueid|debug\.upvaluejoin|io\.close|io\.flush|io\.input|io\.lines|io\.open|io\.output|io\.popen|io\.read|io\.stderr|io\.stdin|io\.stdout|io\.tmpfile|io\.type|io\.write|math\.abs|math\.acos|math\.asin|math\.atan|math\.atan2|math\.ceil|math\.cos|math\.cosh|math\.deg|math\.exp|math\.floor|math\.fmod|math\.frexp|math\.huge|math\.ldexp|math\.log|math\.max|math\.maxinteger|math\.min|math\.mininteger|math\.modf|math\.pi|math\.pow|math\.rad|math\.random|math\.randomseed|math\.sin|math\.sinh|math\.sqrt|math\.tan|math\.tanh|math\.tointeger|math\.type|math\.ult|package\.config|package\.cpath|package\.loaded|package\.loadlib|package\.path|package\.preload|package\.searchers|package\.searchpath|require|os\.clock|os\.date|os\.difftime|os\.execute|os\.exit|os\.getenv|os\.remove|os\.rename|os\.setlocale|os\.time|os\.tmpname|string\.byte|string\.char|string\.dump|string\.find|string\.format|string\.gmatch|string\.gsub|string\.len|string\.lower|string\.match|string\.pack|string\.packsize|string\.rep|string\.reverse|string\.sub|string\.unpack|string\.upper|table\.concat|table\.insert|table\.move|table\.pack|table\.remove|table\.sort|table\.unpack|utf8\.char|utf8\.charpattern|utf8\.codepoint|utf8\.codes|utf8\.len|utf8\.offset)\b"><token type="NameBuiltin"/></rule>
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<rule pattern="[A-Za-z_]\w*"><token type="Name"/></rule>
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<rule pattern="&#x27;"><token type="LiteralStringSingle"/><combined state="stringescape" state="sqs"/></rule>
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<rule pattern="&quot;"><token type="LiteralStringDouble"/><combined state="stringescape" state="dqs"/></rule>
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</state>
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<state name="stringescape">
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<rule pattern="\\([abfnrtv\\&quot;\&#x27;]|\d{1,3})"><token type="LiteralStringEscape"/></rule>
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</state>
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<state name="sqs">
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<rule pattern="&#x27;"><token type="LiteralStringSingle"/><pop depth="1"/></rule>
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<rule pattern="[^\\&#x27;]+"><token type="LiteralString"/></rule>
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</state>
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<state name="dqs">
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<rule pattern="&quot;"><token type="LiteralStringDouble"/><pop depth="1"/></rule>
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<rule pattern="[^\\&quot;]+"><token type="LiteralString"/></rule>
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</state>
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<state name="ws">
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<rule pattern="(?:--\[(?&lt;level&gt;=*)\[[\w\W]*?\](\k&lt;level&gt;)\])"><token type="CommentMultiline"/></rule>
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<rule pattern="(?:--.*$)"><token type="CommentSingle"/></rule>
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<rule pattern="(?:\s+)"><token type="TextWhitespace"/></rule>
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</state>
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<state name="varname">
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<rule><include state="ws"/></rule>
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<rule pattern="\.\."><token type="Operator"/><pop depth="1"/></rule>
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<rule pattern="[.:]"><token type="Punctuation"/></rule>
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<rule pattern="(?:[^\W\d]\w*)(?=(?:(?:--\[(?&lt;level&gt;=*)\[[\w\W]*?\](\k&lt;level&gt;)\])|(?:--.*$)|(?:\s+))*[.:])"><token type="NameProperty"/></rule>
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<rule pattern="(?:[^\W\d]\w*)(?=(?:(?:--\[(?&lt;level&gt;=*)\[[\w\W]*?\](\k&lt;level&gt;)\])|(?:--.*$)|(?:\s+))*\()"><token type="NameFunction"/><pop depth="1"/></rule>
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<rule pattern="(?:[^\W\d]\w*)"><token type="NameProperty"/><pop depth="1"/></rule>
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</state>
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<state name="funcname">
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<rule><include state="ws"/></rule>
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<rule pattern="[.:]"><token type="Punctuation"/></rule>
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<rule pattern="(?:[^\W\d]\w*)(?=(?:(?:--\[(?&lt;level&gt;=*)\[[\w\W]*?\](\k&lt;level&gt;)\])|(?:--.*$)|(?:\s+))*[.:])"><token type="NameClass"/></rule>
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<rule pattern="(?:[^\W\d]\w*)"><token type="NameFunction"/><pop depth="1"/></rule>
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<rule pattern="\("><token type="Punctuation"/><pop depth="1"/></rule>
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</state>
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<state name="goto">
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<rule><include state="ws"/></rule>
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<rule pattern="(?:[^\W\d]\w*)"><token type="NameLabel"/><pop depth="1"/></rule>
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</state>
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<state name="label">
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<rule><include state="ws"/></rule>
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<rule pattern="::"><token type="Punctuation"/><pop depth="1"/></rule>
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<rule pattern="(?:[^\W\d]\w*)"><token type="NameLabel"/></rule>
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</state>
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</rules>
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</lexer>

‎lexers/testdata/moonscript.actual‎

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#!/usr/local/bin/moon
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-- a comment
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.01
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0.1
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1.5E+3
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.3e-2
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2E3
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1e-12
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0x
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0xff
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0x56
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1024
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[[long
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format
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string]]
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[[nested [=[
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long format]=] string
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]]
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->
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-> ->
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(a) -> a + 1
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=>
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=> =>
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(b, c=1) =>
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b + @d / c
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:var
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==
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!=
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~=
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<=
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>=
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...
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..
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=
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+
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-
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*
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/
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%
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^
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<
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>
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#
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!
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.
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\
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:
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a = (b, c) -> b += 1; b, c
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[]
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{}
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()
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var: var
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class
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extends
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if
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then
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super
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do
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with
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import
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export
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while
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elseif
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return
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for
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in
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from
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when
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using
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else
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switch
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break
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true
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false
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nil
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and
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or
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not
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self
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@
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@@
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@var
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@@var
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Name
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LongName
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LOUD_NAME
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L337N4m3
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Forbidden_Name
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assert
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error
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warn
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type
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pairs
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ipairs
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coroutine.create
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debug.debug
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io.open
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math.max
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require
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os.execute
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string.len
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table.insert
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utf8.len
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_
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_name
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name
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nA_Me
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n4m3
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"double"
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'single'
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"multi
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line"
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'multi
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line'
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"escaped\"
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quote"
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'escaped\'
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quote'

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