title: How to make Gnuplot use the "unicode minus" sign for negative numbers
body: <p>Gnuplot uses the hyphen-minus sign (U+002D) when it prints negative numbers (e.g., tick labels). I would like to make Gnuplot use the unicode minus sign (U+2212).</p>
  
  <p>Usually, I have relied on one of the following workarounds:</p>
  
  <ol>
  <li>Explicitly set the label of each tick mark using <code>set xtics (-0.05 "−0.05", ...)</code>;</li>
  <li>Export the plot using a LaTeX driver (e.g., <code>epslatex</code>) and enclose the number within <code>$$</code> (e.g., <code>set format x "$%.2f$"</code>).</li>
  </ol>
  
  <p>However, none of the above solution appeals me. Is there any way to make Gnuplot automatically use the correct typographical convention for negative numbers?</p>