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Support unicode syntax #106

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Support unicode syntax #106

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2b2bb0a
feature/unicode-operators
unclechu Apr 14, 2018
e1cbaf5
feature/unicode-operators: support (×) operator
unclechu Jun 3, 2018
ce8668a
feature/unicode-operators: added more operators
unclechu Jun 9, 2018
1f40ed6
feature/unicode-operators: added all geometric symbols
unclechu Aug 19, 2018
ec8108f
feature/unicode-operators: added mathematical minus sign symbol
unclechu Jul 3, 2019
9937494
feature/unicode-operators: Add more unicode arrow symbols
unclechu Oct 29, 2020
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18 changes: 14 additions & 4 deletions syntax/haskell.vim
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Original file line number Diff line number Diff line change
Expand Up @@ -18,14 +18,14 @@ endif

syn spell notoplevel
syn match haskellRecordField contained containedin=haskellBlock
\ "[_a-z][a-zA-Z0-9_']*\(,\s*[_a-z][a-zA-Z0-9_']*\)*\_s\+::\_s"
\ "[_a-z][a-zA-Z0-9_']*\(,\s*[_a-z][a-zA-Z0-9_']*\)*\_s\+\(::\|∷\)\_s"
\ contains=
\ haskellIdentifier,
\ haskellOperators,
\ haskellSeparator,
\ haskellParens
syn match haskellTypeSig
\ "^\s*\(where\s\+\|let\s\+\|default\s\+\)\?[_a-z][a-zA-Z0-9_']*#\?\(,\s*[_a-z][a-zA-Z0-9_']*#\?\)*\_s\+::\_s"
\ "^\s*\(where\s\+\|let\s\+\|default\s\+\)\?[_a-z][a-zA-Z0-9_']*#\?\(,\s*[_a-z][a-zA-Z0-9_']*#\?\)*\_s\+\(::\|∷\)\_s"
\ contains=
\ haskellWhere,
\ haskellLet,
Expand All @@ -42,7 +42,7 @@ syn match haskellDecl "\<\(type\|data\)\>\s\+\(\<family\>\)\?"
syn keyword haskellDefault default
syn keyword haskellImportKeywords import qualified safe as hiding contained
syn keyword haskellForeignKeywords foreign export import ccall safe unsafe interruptible capi prim contained
syn region haskellForeignImport start="\<foreign\>" end="\_s\+::\s" keepend
syn region haskellForeignImport start="\<foreign\>" end="\_s\+\(::\|∷\)\s" keepend
\ contains=
\ haskellString,
\ haskellOperators,
Expand Down Expand Up @@ -70,7 +70,17 @@ syn region haskellBrackets matchgroup=haskellDelimiter start="\[" end="]" contai
syn region haskellBlock matchgroup=haskellDelimiter start="{" end="}" contains=TOP,@Spell
syn keyword haskellInfix infix infixl infixr
syn keyword haskellBottom undefined error
syn match haskellOperators "[-!#$%&\*\+/<=>\?@\\^|~:.]\+\|\<_\>"

" unicode geometric symbols are listed here:
" https://www.w3schools.com/charsets/ref_utf_geometric.asp
" ■□▢▣▤▥▦▧▨▩▪▫▬▭▮▯▰▱▲△▴▵▶▷▸▹►▻▼▽▾▿◀◁◂◃◄◅◆◇◈◉◊○◌◍◎●◐◑◒◓◔◕◖◗◘◙◚◛◜◝◞◟◠◡◢◣◤◥◦◧◨◩◪◫◬◭◮◯◰◱◲◳◴◵◶◷◸◹◺◻◼◽◾◿
" unicode arrows are listed here:
" https://en.wikipedia.org/wiki/Arrows_(Unicode_block)
" ←↑→↓↔↕↖↗↘↙↚↛↜↝↞↟↠↡↢↣↤↥↦↧↨↩↪↫↬↭↮↯↰↱↲↳↴↵↶↷↸↹↺↻↼↽↾↿⇀⇁⇂⇃⇄⇅⇆⇇⇈⇉⇊⇋⇌⇍⇎⇏⇐⇑⇒⇓⇔⇕⇖⇗⇘⇙⇚⇛⇜⇝⇞⇟⇠⇡⇢⇣⇤⇥⇦⇧⇨⇩⇪⇫⇬⇭⇮⇯⇰⇱⇲⇳⇴⇵⇶⇷⇸⇹⇺⇻⇼⇽⇾⇿
" see also about unicode arrows:
" https://www.unicode.org/charts/PDF/U2190.pdf
syn match haskellOperators "[-!#$%&\*\+/<=>\?@\\^|~:.∷∀★¬∧∨≡≠≢≤≥∘•∙·∈∉∌∋⊥⧺⤚⤙⤛⤜−⋅÷×‣†‡∵∴∶¡¿‖⊳⊲⋈∖∆⊆⊇∪∩∅⊕⊛⊙⊚⋄■□▢▣▤▥▦▧▨▩▪▫▬▭▮▯▰▱▲△▴▵▶▷▸▹►▻▼▽▾▿◀◁◂◃◄◅◆◇◈◉◊○◌◍◎●◐◑◒◓◔◕◖◗◘◙◚◛◜◝◞◟◠◡◢◣◤◥◦◧◨◩◪◫◬◭◮◯◰◱◲◳◴◵◶◷◸◹◺◻◼◽◾◿←↑→↓↔↕↖↗↘↙↚↛↜↝↞↟↠↡↢↣↤↥↦↧↨↩↪↫↬↭↮↯↰↱↲↳↴↵↶↷↸↹↺↻↼↽↾↿⇀⇁⇂⇃⇄⇅⇆⇇⇈⇉⇊⇋⇌⇍⇎⇏⇐⇑⇒⇓⇔⇕⇖⇗⇘⇙⇚⇛⇜⇝⇞⇟⇠⇡⇢⇣⇤⇥⇦⇧⇨⇩⇪⇫⇬⇭⇮⇯⇰⇱⇲⇳⇴⇵⇶⇷⇸⇹⇺⇻⇼⇽⇾⇿]\+\|\<_\>"

syn match haskellQuote "\<'\+" contained
syn match haskellQuotedType "[A-Z][a-zA-Z0-9_']*\>" contained
syn region haskellQuoted start="\<'\+" end="\>"
Expand Down