Changes in version 0.3.0 (2026-09-30)                  

Renaming

  - The package was renamed from latex2r to latexr. The public API is
    unchanged: the main functions are still latex2r() and latex2fun(),
    and errors are still raised as conditions of class latex2r.error.

New features

  - Statistical notation: \bar{x} and \overline{x} translate to mean(x),
    and \tilde{x} translates to median(x).
  - Rolling sums: \sum_{k}^{}{x} translates to data.table::frollsum(x,
    k). The exponent group after ^ is parsed for notation compatibility
    but ignored.
  - Missing values: latex2r() and latex2fun() gained an na.rm argument.
    When TRUE, calls to mean() and median() are emitted with na.rm =
    TRUE (frollsum() is not affected since it handles missing values
    differently). The default FALSE keeps the output unchanged.
  - Unicode input: latex2r() now normalizes the characters commonly
    emitted by visual formula editors (MathQuill) and plain keyboard
    input before scanning. Minus signs, ×, ⋅, ÷, Greek letters, and
    accented vowels such as ā, ã and â become the equivalent LaTeX
    commands. The new normalize_mathquill() function is exported so the
    mapping can be inspected and reused.
  - New latex2ast() function that returns the parsed abstract syntax
    tree of a formula instead of its R translation, for debugging and
    tooling.
  - \ln{x} translates to log(x) (alias of \log).
  - Absolute value: \left|x\right| translates to abs(x).
  - Spacing commands (\;, \,, \:, \quad, \qquad) are now ignored instead
    of raising "Unrecognized latex character".

Maintenance and fixes

  - Fixed a crash when implicit multiplication followed a braced
    rolling-sum operand (e.g. \sum_{3}^{2}{x}y).
  - Fixed stop_custom() conditions not inheriting from class "error",
    which made errors raised by latex2r() impossible to catch with
    tryCatch(error = ...) and aborted non-interactive sessions.
    tryCatch(..., class = "latex2r.error") and expect_error(class =
    "latex2r.error") now work as documented.
  - The parser no longer drops residual tokens after a complete
    expression (e.g. the trailing } in \sqrt{x}}); it now raises a
    latex2r.error.
  - latex2fun() no longer mistakes named call arguments for assignments,
    so formulas translating to log(x, base = 2) (or using na.rm = TRUE)
    work.

Authors

  - Rodrigo Borges rodrigo@borges.net.br is now the creator and
    maintainer. Tomas Capretto remains author and contributor.

                        Changes in version 0.2.0                        

Maintenance and fixes

  - Fixed a bug related to implicit multiplication failing when using
    CARET (#2)
  - Added tests for implicit multiplication

Internal

  - The Token R6 class now has a print.Token S3 method. Useful for
    debugging.

                        Changes in version 0.1.3                        

New features

  - Added a NEWS.md file to track changes to the package.
  - Implicit multiplication. Now the parser interprets things such as
    "xy" as "x * y". Explicit multiplication still works.

Maintenance and fixes

  - Only variable names can have subscripts.
  - latex2fun() utils were updated so now, for example, any letter can
    be a function argument. In general the process of transforming a
    latex expression to a function is more robust.
  - pi is not detected as function argument anymore.
  - latex2fun() raises an error if there is an assignment within the
    expression.
  - Example translations in README

Deprecation

  - Deleted latexInput() and launch_app(). Thus, the package does not
    need either shiny or mathquill anymore.