message() / warning() / stop() write to stderr whereas print() / cat() write 
(by default) to stdout. Even without being able to suppress messages, it is 
well-established practice (the story is that this is the reason why 'stderr' 
was introduced into unix, 
https://www.jstorimer.com/blogs/workingwithcode/7766119-when-to-use-stderr-instead-of-stdout
 ) to separate diagnostic messages from program output. I agree that gargle (in 
particular, and packages in general, given the theme of this mailing list) 
would be a better package if it used message() where it now uses cat().

Martin

On 5/15/19, 5:04 AM, "R-package-devel on behalf of Joris Meys" 
<r-package-devel-boun...@r-project.org on behalf of joris.m...@ugent.be> wrote:

    2) Where cat() is used in gargle, message() is a better option for the
    following reason:
    
    > myfun <- function(){cat("Yes");message("No")}
    > suppressMessages(myfun())
    Yes
    
    
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