aspell-utils: Spell Check Utilities

aspell-utilsR Documentation

Spell Check Utilities


Utilities for spell checking packages via Aspell, Hunspell or Ispell.


aspell_package_Rd_files(dir, drop = c("\\author", "\\references"),
                        control = list(), program = NULL,
                        dictionaries = character())
                         control = list(), program = NULL,
                         dictionaries = character())
aspell_package_R_files(dir, ignore = character(), control = list(),
                       program = NULL, dictionaries = character())
aspell_package_C_files(dir, ignore = character(), control = list(),
                       program = NULL, dictionaries = character())

aspell_write_personal_dictionary_file(x, out, language = "en",
                                      program = NULL)



a character string specifying the path to a package's root directory.


a character vector naming additional Rd sections to drop when selecting text via RdTextFilter.


a list or character vector of control options for the spell checker.


a character string giving the name (if on the system path) or full path of the spell check program to be used, or NULL (default). By default, the system path is searched for aspell, hunspell and ispell (in that order), and the first one found is used.


a character vector of names or file paths of additional R level dictionaries to use. See aspell.


a character vector with regular expressions to be replaced by blanks when filtering the message strings.


a character vector, or the result of a call to aspell().


a character string naming the personal dictionary file to write to.


a character string indicating a language as used by Aspell.


Functions aspell_package_Rd_files, aspell_package_vignettes, aspell_package_R_files and aspell_package_C_files perform spell checking on the Rd files, vignettes, R files, and C-level messages of the package with root directory dir. They determine the respective files, apply the appropriate filters, and run the spell checker.

See aspell for details on filters.

The C-level message string are obtained from the ‘po/PACKAGE.pot’ message catalog file, with PACKAGE the basename of dir. See the section on ‘C-level messages’ in ‘Writing R Extensions’ for more information.

When using Aspell, the vignette checking skips parameters and/or options of commands \Sexpr, \citep, \code, \pkg, \proglang and \samp. Further commands can be skipped by adding --add-tex-command options to the control argument. E.g., to skip both option and parameter of \mycmd, add --add-tex-command='mycmd op'.

Suitable values for control, program, dictionaries, drop and ignore can also be specified using a package defaults file which should go as ‘defaults.R’ into the ‘.aspell’ subdirectory of dir, and provides defaults via assignments of suitable named lists, e.g.,

vignettes <- list(control = "--add-tex-command='mycmd op'")

for vignettes (when using Aspell) and similarly assigning to Rd_files, R_files and C_files for Rd files, R files and C level message defaults.

Maintainers of packages using both English and American spelling will find it convenient to pass control options --master=en_US and --add-extra-dicts=en_GB to Aspell and control options -d en_US,en_GB to Hunspell (provided that the corresponding dictionaries are installed).

Older versions of R had no support for R level dictionaries, and hence provided the function aspell_write_personal_dictionary_file to create (spell check) program-specific personal dictionary files from words to be accepted. The new mechanism is to use R level dictionaries, i.e., ‘.rds’ files obtained by serializing character vectors of such words using saveRDS. For such dictionaries specified via the package defaults mechanism, elements with no path separator can be R system dictionaries or dictionaries in the ‘.aspell’ subdirectory.

See Also