title: Write as CSV giving weird characters
body: <p>I am trying to write a dataframe as csv, which succeeds, but end up some fields with weird characters, Say for example 4.5×10−7 gives 4.5Ã—10âˆ’7 in the csv file. After doing few research I used fileEncoding as "Windows-1252", but that dint help. Here is a reproducible code </p>
  
  <pre><code>name &lt;- c('John Doe','Peter Gynn','Jolie Hope')
  valuename &lt;- c("4.5×10−7", "0.0006", "0.345")
  df &lt;- data.frame(name,valuename)
  write.csv(df, "/Desktop/test.csv", row.names=FALSE)
  </code></pre>
  
  <p>Can anyone help me with a proper encoding or an alternative to take care of that field?</p>