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Checks if the file specification is a file.
# S3 method for default
isFile(pathname, ...)A character string of the pathname to be checked.
Not used.
Returns TRUE if the file specification is a file, otherwise
FALSE is returned.
This function follows symbolic links (also on Windows) and returns a value based on the link target (rather than the link itself).
To check if it is a directory see isDirectory().
Internally file.info() is used.
See also file_test.