replacement - Pattern does not match with Orderless head - Mathematica Stack Exchange
Why does the following pattern matching not succeed? ClearAll[f]; SetAttributes[f,Orderless]; HoldForm[f[a,d[],b,c]]/.HoldPattern[f[a,d[],b,z_]]:>{z} (* f[a,d[],b,c] *) I expected that because ...| Mathematica Stack Exchange
