syn match asteriskComment ";.*" contains=asteriskTodo
syn match asteriskContext "\[.\{-}\]"
syn match asteriskExten "^\s*exten\s*=>\?\s*[^,]\+" contains=asteriskPattern
syn match asteriskExten "^\s*\(register\|channel\|ignorepat\|include\|\(no\)\?load\)\s*=>\?"
syn match asteriskPattern "_\(\[[[:alnum:]#*\-]\+\]\|[[:alnum:]#*]\)*\.\?" contained
syn match asteriskPattern "[^A-Za-z0-9,]\zs[[:alnum:]#*]\+\ze" contained
syn match asteriskApp ",\zs[a-zA-Z]\+\ze$"
syn match asteriskApp ",\zs[a-zA-Z]\+\ze("
" Digits plus oldlabel (newlabel)
syn match asteriskPriority ",\zs[[:digit:]]\+\(+[[:alpha:]][[:alnum:]_]*\)\?\(([[:alpha:]][[:alnum:]_]*)\)\?\ze," contains=asteriskLabel
" oldlabel plus digits (newlabel)
syn match asteriskPriority ",\zs[[:alpha:]][[:alnum:]_]*+[[:digit:]]\+\(([[:alpha:]][[:alnum:]_]*)\)\?\ze," contains=asteriskLabel
" s or n plus digits (newlabel)
syn match asteriskPriority ",\zs[sn]\(+[[:digit:]]\+\)\?\(([[:alpha:]][[:alnum:]_]*)\)\?\ze," contains=asteriskLabel
syn match asteriskLabel "(\zs[[:alpha:]][[:alnum:]]*\ze)" contained
syn match asteriskError "^\s*#\s*[[:alnum:]]*"
syn match asteriskInclude "^\s*#\s*\(include\|exec\)\s.*"
syn match asteriskVar "\${_\{0,2}[[:alpha:]][[:alnum:]_]*\(:-\?[[:digit:]]\+\(:[[:digit:]]\+\)\?\)\?}"
syn match asteriskVar "_\{0,2}[[:alpha:]][[:alnum:]_]*\ze="
syn match asteriskVarLen "\${_\{0,2}[[:alpha:]][[:alnum:]_]*(.*)}" contains=asteriskVar,asteriskVarLen,asteriskExp
syn match asteriskVarLen "(\zs[[:alpha:]][[:alnum:]_]*(.\{-})\ze=" contains=asteriskVar,asteriskVarLen,asteriskExp
syn match asteriskExp "\$\[.\{-}\]" contains=asteriskVar,asteriskVarLen,asteriskExp
syn match asteriskCodecsPermit "^\s*\(allow\|disallow\)\s*=\s*.*$" contains=asteriskCodecs
syn match asteriskCodecs "\(g723\|gsm\|ulaw\|alaw\|g726\|adpcm\|slin\|lpc10\|g729\|speex\|ilbc\|all\s*$\)"
syn match asteriskError "^\(type\|auth\|permit\|deny\|bindaddr\|host\)\s*=.*$"
syn match asteriskType "^\zstype=\ze\<\(peer\|user\|friend\)\>$" contains=asteriskTypeType
syn match asteriskTypeType "\<\(peer\|user\|friend\)\>" contained
syn match asteriskAuth "^\zsauth\s*=\ze\s*\<\(md5\|rsa\|plaintext\)\>$" contains=asteriskAuthType
syn match asteriskAuthType "\<\(md5\|rsa\|plaintext\)\>"
syn match asteriskAuth "^\zs\(secret\|inkeys\|outkey\)\s*=\ze.*$"
syn match asteriskAuth "^\(permit\|deny\)\s*=\s*\d\{1,3}\.\d\{1,3}\.\d\{1,3}\.\d\{1,3}/\d\{1,3}\.\d\{1,3}\.\d\{1,3}\.\d\{1,3}\s*$" contains=asteriskIPRange
syn match asteriskIPRange "\d\{1,3}\.\d\{1,3}\.\d\{1,3}\.\d\{1,3}/\d\{1,3}\.\d\{1,3}\.\d\{1,3}\.\d\{1,3}" contained
syn match asteriskIP "\d\{1,3}\.\d\{1,3}\.\d\{1,3}\.\d\{1,3}" contained
syn match asteriskHostname "[[:alnum:]][[:alnum:]\-\.]*\.[[:alpha:]]{2,10}" contained
syn match asteriskPort "\d\{1,5}" contained
syn match asteriskSetting "^bindaddr\s*=\s*\d\{1,3}\.\d\{1,3}\.\d\{1,3}\.\d\{1,3}$" contains=asteriskIP
syn match asteriskSetting "^port\s*=\s*\d\{1,5}\s*$" contains=asteriskPort
syn match asteriskSetting "^host\s*=\s*\(dynamic\|\(\d\{1,3}\.\d\{1,3}\.\d\{1,3}\.\d\{1,3}\)\|\([[:alnum:]][[:alnum:]\-\.]*\.[[:alpha:]]{2,10}\)\)" contains=asteriskIP,asteriskHostname
" 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_conf_syntax_inits")