test a 'ctags' installation

This uses the example from https://github.com/universal-ctags/ctags/blob/master/man/ctags-lang-r.7.rst.in and also checks the GNU global installation.

Usage

ctags_test(quiet = TRUE, noerror = FALSE)

Arguments

quiet

If TRUE, display on screen whether or not 'ctags' is correctly installed.

noerror

If FALSE (default), this function will error if either 'ctags' or 'gtags' are not installed. If TRUE, the function will complete without erroring, and issue appropriate messages regarding required but non-installed system libraries.

Value

'TRUE' or 'FALSE' respectively indicating whether or not 'ctags' is correctly installed.

See also

Other tags: ctags_install(), tags_data()

Examples

# The function errors if not ctags or gtags found.
# \donttest{
ctags_okay <- !is.null (tryCatch (
    ctags_test (),
    error = function (e) NULL
))
# }