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" Vim syntax file
" Language: mu
" Maintainer: Kartik Agaram <mu@akkartik.com>
" URL: http://github.com/akkartik/mu
" License: public domain
"
" Copy this into your ftplugin directory, and add the following to your vimrc
" or to .vim/ftdetect/mu.vim:
" autocmd BufReadPost,BufNewFile *.mu set filetype=mu
let s:save_cpo = &cpo
set cpo&vim
" todo: why does this periodically lose syntax, like on file reload?
" $ vim x.mu
" :e
"? if exists("b:syntax")
"? finish
"? endif
"? let b:syntax = "mu"
setlocal iskeyword=@,48-57,?,!,_,$,-
setlocal formatoptions-=t " Mu programs have long lines
setlocal formatoptions+=c " but comments should still wrap
syntax match muComment /#.*$/ | highlight link muComment Comment
syntax match muSalientComment /##.*$/ | highlight link muSalientComment SalientComment
set comments+=n:#
syntax match muCommentedCode "#? .*" | highlight link muCommentedCode CommentedCode
let b:cmt_head = "#? "
syntax match muDelimiter "[{}]" | highlight link muDelimiter Delimiter
" Mu literals
syntax match muLiteral %\<-\?[0-9][0-9A-Fa-f]*\>%
syntax match muLiteral %\<-\?0x[0-9A-Fa-f]\+\>%
syntax match muLiteral %"[^"]*"%
highlight link muLiteral Constant
" sources of action at a distance
syntax match muAssign "<-"
highlight link muAssign SpecialChar
" common keywords
syntax match muControl "^return\>\| return\>"
syntax match muControl "\<jump\>\|\<jump-if[^ ]*"
syntax match muControl "\<break\>\|\<break-if[^ ]*"
syntax match muControl "\<loop\>\|\<loop-if[^ ]*"
highlight link muControl PreProc
syntax match muKeyword " -> "
syntax keyword muKeyword fn type var
highlight link muKeyword PreProc
syntax match muFunction "\(fn\s*\)\@<=\(\S\+\)"
highlight muFunction cterm=underline ctermfg=130
syntax match muTest "\(fn\s*\)\@<=\(test-\S\+\)"
highlight muTest ctermfg=64
syntax match muData "^type\>"
syntax match muData "\<eax\>\|\<ecx\>\|\<edx\>\|\<ebx\>\|\<esi\>\|\<edi\>"
highlight link muData Constant
let &cpo = s:save_cpo
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