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Define a LaTeX shorthand for every label

Source: R/macros.R
define_macro.Rd

define_macro() adds a macro without arguments, such as \RR for \mathbb{R}, that every later label can use. list_macros() shows them and clear_macros() removes them.

Usage

define_macro(name, definition)

clear_macros(name = NULL)

list_macros()

Arguments

name

Macro name, without the backslash. For clear_macros(), NULL (default) removes all macros.

definition

The LaTeX the macro stands for.

Value

list_macros() returns a named character vector of macros and their definitions. The others return NULL, invisibly.

Details

A label can also define its own macros with \newcommand, \def and the like, including macros with arguments, but those last for that label only.

See also

latex_grob, latex_options

Examples

# \donttest{
  define_macro("RR", "\\mathbb{R}")
  define_macro("eps", "\\varepsilon")
  grid::grid.newpage()
  grid.latex("\\forall \\eps > 0, \\eps \\in \\RR")

  clear_macros()
# }