Some but not all reserved keywords are detected as globals

[HenrikBengtsson]

Just a note for now: The following reserved keywords are flagged as globals by findGlobals() although they're "cannot" be globals:

• if

• for

• repeat

• break

• while

• next

• Ok, technically, the can.

Note that some of the reserved keywords in R are not picked up, e.g.

• function
• else
• in

Reproducible examples

Keyword: function

> globals::findGlobals(function() NULL, substitute = TRUE)
[1] character(0)

Keywords: if and else

> globals::findGlobals(if (TRUE) 1 else 0, substitute = TRUE)
[1] "if"

Keywords: for and in

> globals::findGlobals(for (x in NULL) NULL, substitute = TRUE)
[1] "for"

Keywords: repeat and break

> globals::findGlobals(repeat break, substitute = TRUE)
[1] "repeat" "break"

Keywords: while and next

> globals::findGlobals(while(FALSE) next, substitute = TRUE)
[1] "while"    "next"

PS. codetools::findGlobals() does the same.