fixup! refactor: allow changing name of parameter argument in delay_to_function

Author: AayushSabharwal

src/systems/diffeqs/abstractodesystem.jl

@@ -243,7 +243,8 @@ function isdelay(var, iv)
 end
 const DDE_HISTORY_FUN = Sym{Symbolics.FnType{Tuple{Any, <:Real}, Vector{Real}}}(:___history___)
 const DEFAULT_PARAMS_ARG = Sym{Any}(:ˍ₋arg3)
-function delay_to_function(sys::AbstractODESystem, eqs = full_equations(sys); history_arg = DEFAULT_PARAMS_ARG)
+function delay_to_function(
+        sys::AbstractODESystem, eqs = full_equations(sys); history_arg = DEFAULT_PARAMS_ARG)
     delay_to_function(eqs,
         get_iv(sys),
         Dict{Any, Int}(operation(s) => i for (i, s) in enumerate(unknowns(sys))),
@@ -254,7 +255,8 @@ function delay_to_function(eqs::Vector, iv, sts, ps, h; history_arg = DEFAULT_PA
     delay_to_function.(eqs, (iv,), (sts,), (ps,), (h,); history_arg)
 end
 function delay_to_function(eq::Equation, iv, sts, ps, h; history_arg = DEFAULT_PARAMS_ARG)
-    delay_to_function(eq.lhs, iv, sts, ps, h; history_arg) ~ delay_to_function(eq.rhs, iv, sts, ps, h; history_arg)
+    delay_to_function(eq.lhs, iv, sts, ps, h; history_arg) ~ delay_to_function(
+        eq.rhs, iv, sts, ps, h; history_arg)
 end
 function delay_to_function(expr, iv, sts, ps, h; history_arg = DEFAULT_PARAMS_ARG)
     if isdelay(expr, iv)