title: Package inputenc Error: Unicode char \u8 in RStudio
body: <p>In RStudio, when i go for convert my Markdown file to PDF then it gives me the error:</p>
  
  <blockquote>
    <p>output file: report.knit.md</p>
    
    <p>! Package inputenc Error: Unicode char \u8: not set up for use with LaTeX.</p>
    
    <p>See the inputenc package documentation for explanation.
    Type  H   for immediate help.
    ...                                              </p>
    
    <p>l.117 performance for 32 automobiles (1973â</p>
    
    <p>Try running pandoc with --latex-engine=xelatex.
    pandoc.exe: Error producing PDF from TeX source
    Error: pandoc document conversion failed with error 43
    In addition: Warning message:
    running command '"C:/Program Files/RStudio/bin/pandoc/pandoc" +RTS -K512m -RTS report.utf8.md --to latex --from markdown+autolink_bare_uris+ascii_identifiers+tex_math_single_backslash-implicit_figures --output report.pdf --template "C:\Users\USER\Documents\R\win-library\3.2\rmarkdown\rmd\latex\default.tex" --highlight-style tango --latex-engine pdflatex --variable "geometry:margin=1in"' had status 43 
    Execution halted</p>
  </blockquote>
  
  <p>My R version (Windows 7):</p>
  
  <p><code>R version 3.2.1 (2015-06-18) -- "World-Famous Astronaut"
  Copyright (C) 2015 The R Foundation for Statistical Computing
  Platform: x86_64-w64-mingw32/x64 (64-bit)</code></p>