Format all R scripts under a directory, or specified R scripts
Look for all R scripts under a directory (using the pattern
"[.][RrSsQq]$"), then tidy them with tidy_source(). If
successful, the original scripts will be overwritten with reformatted ones.
Please back up the original directory first if you do not fully understand
the tricks used by tidy_source(). tidy_file() formats
scripts specified by file names.
tidy_dir(path = ".", recursive = FALSE, ...) tidy_file(file, ...)
path | 
 The path to a directory containning R scripts.  | 
recursive | 
 Whether to recursively look for R scripts under   | 
... | 
 Other arguments to be passed to   | 
file | 
 A vector of filenames.  | 
Invisible NULL.
Yihui Xie (tidy_dir) and Ed Lee (tidy_file)
library(formatR)
path = tempdir()
file.copy(system.file("demo", package = "base"), path, recursive = TRUE)
tidy_dir(path, recursive = TRUE)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.