From: Albert_Rich@msn.com   
      
   On Sunday, July 19, 2015 at 1:16:13 PM UTC-10, Nasser M. Abbasi wrote:   
      
   > I'd like to capture all the steps made in solving an integral   
   > using Rubi, even if Rubi can't solve it completely, but do   
   > this in the code, i.e. without user intervention.   
      
   The following function StepInt[expn,var] uses Mathematica's FixedPoint   
   function to repeatedly print and evaluate intermediate results produced by   
   Rubi until there is no change:   
      
   StepInt[u_,x_Symbol] :=   
    Block[{ShowSteps=True},   
     FixedPoint[   
       Function[   
         Print[#];   
         ReplaceAll[#,{Defer[Int]->Int,Defer[Dist]->Dist,Defer[Subst]->Subst}]],   
       Int[u,x]];   
     Null]   
      
   Note that StepInt has NOT been extensively tested. Please let me know if you   
   encounter any problems using it.   
      
   Albert   
      
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