list.files总是返回目录

Question

为什么list.files()返回目录和文件？

事实上，“援助”指出：

include.dirs

合乎逻辑。子目录名是否应该包含在递归列表中？(它们总是非递归的)。“

代码和输出(Windows 10)：

list.files(R.home(), include.dirs =FALSE)
 [1] "bin"            "CHANGES"        "COPYING"        "doc"           
 [5] "etc"            "include"        "library"        "MD5"           
 [9] "modules"        "README"         "README.R-3.6.3" "share"         
[13] "src"            "Tcl"            "tests"          "unins000.dat"  
[17] "unins000.exe"

Answer 1

尝试以下几点：

length(list.files(R.home(), include.dirs = TRUE, recursive=TRUE))
length(list.files(R.home(), include.dirs = FALSE, recursive=TRUE))