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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:
" autocmd BufReadPost,BufNewFile *.mu,*.test 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 /##.*$/ | highlight link muSalientComment SalientComment
syntax match muComment /;.*$/ | highlight link muComment Comment
syntax match muSalientComment /;;.*$/ | highlight link muSalientComment SalientComment
set comments+=n:#
syntax match CommentedCode "#? .*"
let b:cmt_head = "#? "
" mu strings are inside [ ... ] and can span multiple lines
" don't match '[' at end of line, that's usually code
syntax region muString start=+\[[^\]]+ end=+\]+
syntax match muString "\[\]"
highlight link muString String
" mu syntax for representing the screen in scenarios
syntax region muScreen start=+ \.+ end=+\.$\|$+
highlight link muScreen muString
" all mu literals are constants
syntax match muNumber %[^ ]\+:literal/\?[^ ,]*%
highlight link muNumber Constant
syntax match muDelimiter "[{}]" | highlight link muDelimiter Delimiter
syntax match muLabel " [^a-zA-Z0-9 \[\.][a-zA-Z0-9-]\+" | highlight link muLabel Function
syntax match muAssign " <- " | highlight link muAssign SpecialChar
syntax match muAssign "\<raw\>"
syntax keyword muControl reply reply-if reply-unless jump jump-if jump-unless loop loop-if loop-unless break-if break-unless default-space next-ingredient ingredient current-continuation continue-from create-delimited-continuation reply-delimited-continuation | highlight link muControl Function
" common keywords
syntax keyword muRecipe recipe before after | highlight muRecipe ctermfg=208
syntax keyword muScenario scenario | highlight muScenario ctermfg=34
let &cpo = s:save_cpo
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