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Default prettycode syntax highlighting style

Source: R/style.R
default_style.Rd

A style function must return a named list of functions. Possible entries:

  • reserved: reserved words

  • number: numeric literals

  • null: the NULL constant

  • operator: operators, including assignment

  • call: function calls

  • string: character literals

  • comment: comments

  • bracket: brackets: (){}[]

Usage

default_style()

Details

Each entry in a list must be a function that takes a character scalar, and returns a character scalar with the exception of bracket which should be a list of these type of functions defining a color sequence. The default style adds ANSI formatting to the code.

Note that you can also change the code if you like, e.g. to include a unicode arrow character instead of the two-character assignment operator.

Examples

highlight(deparse(get), style = default_style())
#> [1] "\033[31mfunction\033[39m \033[33m(\033[39mx, pos = \033[32m-\033[39m\033[34m1L\033[39m, envir = \033[36mas.environment\033[39m\033[34m(\033[39mpos\033[34m)\033[39m, mode = \033[33m\"any\"\033[39m, "
#> [2] "    inherits = \033[34mTRUE\033[39m\033[33m)\033[39m "                                                                                                                                                
#> [3] "\033[36m.Internal\033[39m\033[33m(\033[39m\033[36mget\033[39m\033[34m(\033[39mx, envir, mode, inherits\033[34m)\033[39m\033[33m)\033[39m"