kmx.io/prism.js/tests/languages/metafont/constant_feature.test

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• Hash : 2815f699
  Author :
  Date : 2022-06-07T03:35:31
  

  Added support for METAFONT (#3465) Includes the METAFONT language to supported languages in Prism. METAFONT is a language for fontdrawing and fontmaking, especially for fonts destined to TeX. While old in various regards its legacy endures in METAPOST or in the TikZ syntax.

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• tests/languages/metafont/constant_feature.test

• % Length constants
  bp cc cm dd in mm pc pt
  
  % Pair constants
  down left origin right up
  
  % Numeric constants
  eps epsilon infinity _ % _ is -1, as per Knuth: "internal constant to make macros unreadable but shorter"
  
  % Path constants
  fullcircle halfcircle quartercircle unitsquare
  
  % Pen constant
  nullpen penrazor penspeck pensquare penstroke
  
  % Picture constants
  blankpicture nullpicture unitpixel
  
  % String constant
  ditto
  
  % Transform constant
  identity
  
  % Other constants
  proof relax smoke \ \\ ???
  
  ----------------------------------------------------
  
  [
  	["comment", "% Length constants"],
  
  	["constant", "bp"],
  	["constant", "cc"],
  	["constant", "cm"],
  	["constant", "dd"],
  	["constant", "in"],
  	["constant", "mm"],
  	["constant", "pc"],
  	["constant", "pt"],
  
  	["comment", "% Pair constants"],
  
  	["constant", "down"],
  	["constant", "left"],
  	["constant", "origin"],
  	["constant", "right"],
  	["constant", "up"],
  
  	["comment", "% Numeric constants"],
  
  	["constant", "eps"],
  	["constant", "epsilon"],
  	["constant", "infinity"],
  	["constant", "_"],
  	["comment", "% _ is -1, as per Knuth: \"internal constant to make macros unreadable but shorter\""],
  
  	["comment", "% Path constants"],
  
  	["constant", "fullcircle"],
  	["constant", "halfcircle"],
  	["constant", "quartercircle"],
  	["constant", "unitsquare"],
  
  	["comment", "% Pen constant"],
  
  	["constant", "nullpen"],
  	["constant", "penrazor"],
  	["constant", "penspeck"],
  	["constant", "pensquare"],
  	["constant", "penstroke"],
  
  	["comment", "% Picture constants"],
  
  	["constant", "blankpicture"],
  	["constant", "nullpicture"],
  	["constant", "unitpixel"],
  
  	["comment", "% String constant"],
  	["constant", "ditto"],
  
  	["comment", "% Transform constant"],
  	["constant", "identity"],
  
  	["comment", "% Other constants"],
  
  	["constant", "proof"],
  	["constant", "relax"],
  	["constant", "smoke"],
  	["constant", "\\"],
  	["constant", "\\\\"],
  	["constant", "???"]
  ]
  
  ----------------------------------------------------
  
  Checks for constants best not to be redefined.

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