title: lapply error message when creating a sequence
body: <p>I was wondering why the lapply function gives an error back when using this term:</p>
  
  <pre><code>&gt;lapply(x=3:9, seq)
  Error in match.fun(FUN) : argument "FUN" is missing, with no default
  </code></pre>
  
  <p>but does work perfectly, when running it like this:</p>
  
  <pre><code>&gt;lapply(X=3:9, seq)
  
  [[1]]    
  [1] 1 2 3
  
  [[2]]    
  [1] 1 2 3 4
  
  [[3]]    
  [1] 1 2 3 4 5
  
  [[4]]    
  [1] 1 2 3 4 5 6
  
  [[5]]   
  [1] 1 2 3 4 5 6 7
  
  [[6]]    
  [1] 1 2 3 4 5 6 7 8
  
  [[7]]
  [1] 1 2 3 4 5 6 7 8 9
  </code></pre>
  
  <p>Both objects (<strong>x</strong> and <strong>X</strong>) are not available. </p>
  
  <p>Is there some kind of internal functions at work here?</p>
  
  <p>Assa</p>
  
  <pre><code>&gt; sessionInfo()
  R version 3.4.0 (2017-04-21)
  Platform: x86_64-apple-darwin15.6.0 (64-bit)
  Running under: OS X El Capitan 10.11.6
  
  Matrix products: default
  BLAS: /Library/Frameworks/R.framework/Versions/3.4/Resources/lib/libRblas.0.dylib
  LAPACK: /Library/Frameworks/R.framework/Versions/3.4/Resources/lib/libRlapack.dylib
  
  locale:
  [1] C/UTF-8/C/C/C/C
  
  attached base packages:
  [1] stats     graphics  grDevices utils     datasets  methods   base     
  
  loaded via a namespace (and not attached):
  [1] compiler_3.4.0
  </code></pre>