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Language Changes

• The following floor and ceil operators are now considered fences.
  • |__ ⇒ ⌊
  • __| ⇒ ⌋
  • |~ ⇒ ⌈
  • ~| ⇒ ⌉
• Added the following fences:
  • << ⇒ ⟨
  • >> ⇒ ⟩

Language Changes

• Meaningful identifiers and operators cannot immedietly follow—or be followed by—an alphabetic character. E.g. asinb will not combine the sin into a single identifier. Surround the identifier with spaces to get the desired result. E.g. a sin b, or—better yet—use invisible (zero width) operators (U+2061–U+2064; a&*sin&$b; see below).
• Infixes (e.g. /, ^, or _) now follow a consistent grammar. It will operate on the previous/next literal if it immediately presides/follows (e.g. no space between), otherwise it will operate on the previous/next expression (i.e. terms grouped together by surrounding space/parens/other infixes).
• Font commands now work on the following expression, as opposed to just following token elements. E.g. now its possible to do bf [a; b] to make all the terms of the matrix bold-face.
• Bevelled fractions (a./b) have been removed. They are deprecated in MathML and might be removed from browsers soon. Use a//b instead for a fraction slash operator.
• Removed nested bracket matrix notation: [(a, b), (c, d)]. Use column seperators or newlines for writing matrices: [a, b; c, d].
• pipe fences and matrices (|a,b;c,d| and ||a,b;c,d||) now require inner parenthesis (|(a,b;c,d)| and ||(a,b;c,d)|| respectively).
• Unicode numbers are now strictly (with one expection) in the Nd, Nl, and No unicode categories. The only exceptions are the dozenal U+218A ↊ TURNED DIGIT TWO and U+218B ↋ TURNED DIGIT THREE. This omits CJK numerals (like 二, 四, or 万) that were previously mapped to number literals. Prepend then with octothorpe (#四十二) if you want the old behavior.
• Backslash operators in brackets \(foo), \[bar] have been removed. Instead they follow the same syntax as octothorpe numbers. Write \int for alphanumeric operators, or \`foo bar` if they contain symbols. If you need to use a backtick as an operator then the fencing follows the same syntax as markdown. \`` ` ``. The same goes for octothorpe numbers #`forty two`, identifiers `foo bar`, and text "" "in quotes" "".
• Roots are now notated as taking two args (just like binom). write root(a, b) or root a b. Unlike previous versions root(a)(b) will now include the brackets around a and b.

Output Changes

• Fenced groups will no long render in the deprecated <mfenced> element. Instead it renders in the visually equivalent <mrow>s with <mo>s as fences and seperators.
• lim and mod now map to opperators and render in an <mo> element.

Additions

• Added .toString() and .toDOM() methods to the returned object.
• Added obrace and ubrace to accents.
• Added invisible operators &+, &*, &,, and &$ for implied addition, multiplication, seperation and function application respectively.

Breaking Changes

• Removed the following opitons from the main function—they might be reimplented if demand is there:
  • annotate
  • bare
  • standalone
• Calling main function with a single option parameter no longer returns another main function with those options applied. If you want to curry the main function, use an arrow function or a library:

  const curried = input => mathup(input, { display: "block" })
  

• Main function no longer returns string by default. Use the .toString() method of the returned object instead.

Additions

• Added binom(a, b) for the binomial coefficient.

Braking Changes

• A two row column vector, denoted with (a; b) will no longer turn into a binomial coefficient. It will stay as a column vector. Use binom(a, b) if you want the old behavior.

Changes

• Semicolon- and newline seperated matrices [a, b; c, d] now take precedence over parenthesis delimited matrices [(a, b), (c, d)] in case of ambiguity.

Contributors

• runarberg [email protected]

Fixes

• binom function can now handle empty terms #32

Contributors

• runarberg [email protected]