init

.vim/ftdetect/epp.vim

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+au BufRead,BufNewFile *.epp set filetype=epp

.vim/syntax/epp.vim

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+syn match EppComment "@.*"
+syn match EppString +".\{-}[^\\]"+
+syn match EppInt "\<\d\+\>"
+syn keyword EppStdFunction checkpoint convert append return system import global select print range input index write array sleep join proc prec list goto jump type read rand help exec pair keys out str len get pop sub has run cti itc env
+syn keyword EppRepeat for while switch if else
+syn keyword EppLabel case 
+syn keyword EppJump goto return break
+syn keyword EppFunc func
+syn keyword EppSet set
+syn keyword EppBoolLiteral false true
+syn keyword EppException except
+syn match EppArrowOperator  "->"
+syn match EppAccessOperator "'"
+
+hi link EppComment        Comment
+hi link EppStdFunction    Function
+hi link EppString         String
+hi link EppInt            Number
+hi link EppBoolLiteral    Boolean
+hi link EppRepeat         Repeat
+hi link EppLabel          Label
+hi link EppJump           Statement
+hi link EppSet            Statement
+hi link EppFunc           Statement
+hi link EppArrowOperator  Operator
+hi link EppAccessOperator Operator
+hi link EppException      Exception

README.md

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+Syntax files for Epp (esolang of a fren).