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" 5px wide equals
" 5px wide minus
" set correct conceal
setlocal conceallevel=1
" lambda's
syntax match hsLambda "\\" conceal cchar=λ
" function composition
syntax match hsCompose / \. /ms=s+1,me=e-1 conceal cchar=·
" ->
syn match MHArrow /->/ contains=MHArrowM,MHArrowH
syn match MHArrowM /-/ contained containedin=MHArrow conceal cchar=
syn match MHArrowH /-\@<=>/ contained containedin=MHArrow conceal cchar=→
" <-
syn match HMArrow /<\ze-/ contains=HMArrowM,HMArrowH
syn match HMArrowH /</ contained containedin=HMArrow conceal cchar=←
" =>
syn match DMHArrow /=>/ contains=DMHArrowM,DMHArrowH
syn match DMHArrowM /=/ contained containedin=DMHArrow conceal cchar=
syn match DMHArrowH /=\@<=>/ contained containedin=DMHArrow conceal cchar=⇒
" >>=
syn match DTTMArrow />>\ze=/ contains=DTTMArrowT,DTTMArrowTT
syn match DTTMArrowTT />/ contained containedin=DTTMArrow conceal cchar=
syn match DTTMArrowT />\@<=>/ contained containedin=DTTMArrow conceal cchar=
" >=>
syn match DTMHArrow />=>/ contains=DTMHArrowT,DTMHArrowM,DTMHArrowH
syn match DTMHArrowT />/ contained containedin=DTMHArrow conceal cchar=
syn match DTMHArrowM /=/ contained containedin=DTMHArrow conceal cchar=
syn match DTMHArrowH /=\@<=>/ contained containedin=DTMHArrow conceal cchar=⇒
" <=<
syn match DHMTArrow /<=</ contains=DHMTArrowM,DHMTArrowH,DHMTArrowT
syn match DHMTArrowH /</ contained containedin=DHMTArrow conceal cchar=⇐
syn match DHMTArrowM /=/ contained containedin=DHMTArrow conceal cchar=
syn match DHMTArrowT /=\@<=</ contained containedin=DHMTArrow conceal cchar=
" =<<
syn match DMTTArrow /=<</ contains=DMTTArrowT,DMTTArrowTT,DMTTArrowM
syn match DMTTArrowM /=/ contained containedin=DMTTArrow conceal cchar=
syn match DMTTArrowT /</ contained containedin=DMTTArrow conceal cchar=
syn match DMTTArrowTT /<\@<=</ contained containedin=DMTTArrow conceal cchar=<
" -<
syn match MTArrow /-</ contains=MTArrowT,MTArrowM
syn match MTArrowT /-/ contained containedin=MTArrow conceal cchar=
syn match MTArrowM /-\@<=</ contained containedin=MTArrow conceal cchar=⤙
" -<<
syn match MTTArrow /-<</ contains=MTTArrowT,MTTArrowM,HTTArrowTT
syn match MTTArrowM /-<</me=s+1 contained containedin=MTTArrow conceal cchar=
syn match MTTArrowT /-\@<=</ contained containedin=MTTArrow conceal cchar=⤛
syn match MTTArrowTT /\(-<\)\@<=</ contained containedin=MTTArrow conceal cchar=<
" >-
syn match TMArrow />\ze-/ contains=TMArrowT,TMArrowM
syn match TMArrowT />/ contained containedin=TMArrow conceal cchar=⤚
">>-
syn match TTMArrow />>\ze-/ contains=TTMArrowT,TTMArrowTT,TTMArrowTTT
syn match TTMArrowTT />/ contained containedin=TTMArrow conceal cchar=
syn match TTMArrowT />\@<=>/ contained containedin=TTMArrow conceal cchar=⤜
syn match TTMArrowTTT /-<</me=s+1 contained containedin=TTMArrow conceal cchar=
" These are probably not all arrow patterns one could come up with, so if you need
" another one and you can't think of how to implement it, please contact me to ask
" for it! I'll try to create the syntax rules.
" Also if you have come up with some more patterns please contact me so I can
" include them in the list.
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