shadowed-builtin

Flag a local binding to a function whose name is exported by a default R package when that name is later called in the same scope (c <- function(...) ...; c(2, 3)). A value binding (names <- names(x)) is exempt: R’s call-position lookup skips non-function locals, so it is not a hazard.

This rule is enabled by default.

Binding a function over base c() and then calling it:

c <- function(x, y) x
c(2, 3)

warning: shadowed-builtin
 --> example.R:1:1
  |
1 | c <- function(x, y) x
  | ^ local binding `c` shadows a base-R name later used in this scope
  = help: Rename the local, or fully qualify the base call (e.g. `base::c`).