diff --git a/mlr.vim b/mlr.vim
deleted file mode 100644
index d8b025d6c..000000000
--- a/mlr.vim
+++ /dev/null
@@ -1,81 +0,0 @@
-" Copyright 2021 John Kerl. All rights reserved.
-" Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
-"
-" mlr.vim: Vim syntax file for the Miller DSL.
-
-if exists("b:current_syntax")
-  finish
-endif
-
-syn case match
-
-" ----------------------------------------------------------------
-" Goal: map the lexical elements of the Miller DSL grammar
-"   https://github.com/johnkerl/miller/blob/main/go/src/parsing/mlr.bnf
-" to Vim syntax options
-"   http://vimdoc.sourceforge.net/htmldoc/syntax.html
-" ----------------------------------------------------------------
-
-" ----------------------------------------------------------------
-syn region mlrComment          start="#" end="$"
-syn region mlrString           start=+"+ skip=+\\\\\|\\"+ end=+"+ contains=@mlrStringGroup
-syn match   mlrDecimalInt      "\<-\=\(0\|[1-9]_\?\(\d\|\d\+_\?\d\+\)*\)\%([Ee][-+]\=\d\+\)\=\>"
-syn match   mlrHexadecimalInt  "\<-\=0[xX]_\?\(\x\+_\?\)\+\>"
-syn match   mlrBinaryInt       "\<-\=0[bB]_\?\([01]\+_\?\)\+\>"
-syn match   mlrFloat           "\<-\=\d\+\.\d*\%([Ee][-+]\=\d\+\)\=\>"
-syn match   mlrFloat           "\<-\=\.\d\+\%([Ee][-+]\=\d\+\)\=\>"
-syn keyword mlrConstant        M_PI M_E
-syn keyword mlrBoolean         true false
-syn keyword mlrContextVariable IPS IFS IRS OPS OFS ORS OFLATSEP NF NR FNR FILENAME FILENUM
-syn keyword mlrENV             ENV
-syn match   mlrOperator        /[-+%<>!&|^*=]=\?/
-syn match   mlrOperator        /\/\%(=\|\ze[^/*]\)/
-syn match   mlrOperator        /\%(<<\|>>\|&^\)=\?/
-syn match   mlrOperator        /:=\|||\|<-\|++\|--/
-" TODO: more operators
-syn keyword mlrKeyword         begin do elif else end filter for if in while break continue return
-syn keyword mlrKeyword         func subr call dump edump
-syn keyword mlrKeyword         emit emitp emitf eprint eprintn print printn tee stdout stderr unset null
-syn keyword mlrType            arr bool float int map num str var
-syn match   mlrFieldName       /\(\$[_a-zA-Z0-9]+\)/
-syn match   mlrFieldName       /\(\$\*\)/
-syn match   mlrOosvarName      /\(@[_a-zA-Z0-9]+\)/
-syn match   mlrOosvarName      /\(@\*\)/
-syn match   mlrIdentifier      /\(\<[a-zA-Z_][a-zA-Z_0-9]*\>\)/
-syn match   mlrFunctionCall    /\w\+\ze(/ contains=mlrBuiltins,mlrDeclaration
-
-syn region  mlrParen           start='(' end=')' transparent
-syn region  mlrBlock           start="{" end="}" transparent
-
-" Trailing whitespace; space-tab
-syn match   mlrSpaceError      display excludenl "\s\+$"
-syn match   mlrSpaceError      display " \+\t"me=e-1
-
-" ----------------------------------------------------------------
-
-hi def link mlrComment         Comment
-hi def link mlrString          String
-hi def link mlrDecimalInt      Integer
-hi def link mlrHexadecimalInt  Integer
-hi def link mlrBinaryInt       Integer
-hi def link Integer            Number
-hi def link mlrFloat           Float
-hi def link mlrConstant        Constant
-hi def link mlrBoolean         Boolean
-hi def link mlrContextVariable Keyword
-hi def link mlrENV             Keyword
-hi def link mlrOperator        Operator
-hi def link mlrKeyword         Keyword
-hi def link mlrType            Type
-hi def link mlrFieldName       Special
-hi def link mlrOosvarName      Special
-hi def link mlrIdentifier      Identifier
-hi def link mlrFunctionCall    Type
-hi def link mlrSpaceError      Error
-
-" ----------------------------------------------------------------
-syn sync minlines=200
-
-let b:current_syntax = "mlr"
-
-" vim: sw=2 ts=2 et