" Vim syntax file
" Language: configure.in script: M4 with sh
" Maintainer: Christian Hammesr <[email protected]>
" Last Change: 2008 Sep 03

" Well, I actually even do not know much about m4. This explains why there
" is probably very much missing here, yet !
" But I missed a good hilighting when editing my GNU autoconf/automake
" script, so I wrote this quick and dirty patch.


" For version 5.x: Clear all syntax items
" For version 6.x: Quit when a syntax file was already loaded
if version < 600
syntax clear
elseif exists("b:current_syntax")
finish
endif

" define the config syntax
syn match configdelimiter "[()\[\];,]"
syn match configoperator "[=|&\*\+\<\>]"
syn match configcomment "\(dnl.*\)\|\(#.*\)"
syn match configfunction "\<[A-Z_][A-Z0-9_]*\>"
syn match confignumber "[-+]\=\<\d\+\(\.\d*\)\=\>"
syn keyword configkeyword if then else fi test for in do done
syn keyword configspecial cat rm eval
syn region configstring start=+"+ skip=+\\"+ end=+"+
syn region configstring start=+'+ skip=+\\'+ end=+'+
syn region configstring start=+`+ skip=+\\'+ end=+`+

" Define the default highlighting.
" For version 5.7 and earlier: only when not done already
" For version 5.8 and later: only when an item doesn't have highlighting yet
if version >= 508 || !exists("did_config_syntax_inits")
if version < 508
let did_config_syntax_inits = 1
command -nargs=+ HiLink hi link <args>
else
command -nargs=+ HiLink hi def link <args>
endif

HiLink configdelimiter Delimiter
HiLink configoperator Operator
HiLink configcomment Comment
HiLink configfunction Function
HiLink confignumber Number
HiLink configkeyword Keyword
HiLink configspecial Special
HiLink configstring String

delcommand HiLink
endif

let b:current_syntax = "config"

" vim: ts=4