When the "Check arguments to R function calls" option (Tools > Global Options > Code > Diagnostics) is checked, if a function is created in a list and named after another function, diagnostics will use the function in the list to check subsequent calls.
Example code:
a <- list(
paste = function(x) paste(x, collapse = ""),
x = paste(letters, collapse = "")
)
y <- paste(letters, collapse = "")
Diagnostics flags:
In this example, each flag says, "too many arguments in call to 'paste'". Of course, the code runs fine.
I've had (and continue to have) the same issue every once in a while when I redefine function in a package, but before I refresh the session. Looks like this is the case here as well. Code diagnostics probably looks at paste definition that takes only 1 element and then freaks out when it sees paste with multiple arguments.
I'm on Version 1.2.1114 RStudio, so looks like it is "consistent".
