title: Simple awk command issue (FS, OFS related)
body: <p>I tried to reorganize the format of a file containing:</p>
  
  <pre><code>&gt;Humanl|chr16:86430087-86430726 | element 1 | positive
  &gt;Humanl|chr16:85620095-85621736 | element 2 | negative
  &gt;Humanl|chr16:80423343-80424652 | element 3 | negative
  &gt;Humanl|chr16:80372593-80373755 | element 4 | positive
  &gt;Humanl|chr16:79969907-79971297 | element 5 | negative
  &gt;Humanl|chr16:79949950-79951518 | element 6 | negative
  &gt;Humanl|chr16:79026563-79028162 | element 7 | negative
  &gt;Humanl|chr16:78933253-78934686 | element 9 | negative
  &gt;Humanl|chr16:78832182-78833595 | element 10 | negative
  </code></pre>
  
  <p>My command is:</p>
  
  <pre><code>awk '{FS="|";OFS="\t"} {print $1,$2,$3,$4,$5}'
  </code></pre>
  
  <p>Here is the output:</p>
  
  <pre><code>&gt;Human|chr16:86430087-86430726  |      element 1      |
  &gt;Human  chr16:85620095-85621736         element 2      negative
  &gt;Human  chr16:80423343-80424652         element 3      negative
  &gt;Human  chr16:80372593-80373755         element 4      positive
  &gt;Human  chr16:79969907-79971297         element 5      negative
  &gt;Human  chr16:79949950-79951518         element 6      negative
  &gt;Human  chr16:79026563-79028162         element 7      negative
  &gt;Human  chr16:78933253-78934686         element 9      negative
  &gt;Human  chr16:78832182-78833595         element 10     negative
  </code></pre>
  
  <p>Every line works fine except for the first line. I don't understand why this happened. </p>
  
  <p>Can someone help me with it? Thanks!</p>