Random: always use SamplerRangeFast for MersenneTwister (#27560)

Author: rfourquet

stdlib/Random/src/RNGs.jl

@@ -539,8 +539,8 @@ end
 
 #### from a range
 
-for T in BitInteger_types # eval because of ambiguity otherwise
-    @eval Sampler(rng::MersenneTwister, r::UnitRange{$T}, ::Val{1}) =
+for T in BitInteger_types, R=(1, Inf) # eval because of ambiguity otherwise
+    @eval Sampler(rng::MersenneTwister, r::UnitRange{$T}, ::Val{$R}) =
         SamplerRangeFast(r)
 end
 

stdlib/Random/src/misc.jl

@@ -53,10 +53,10 @@ number generator, see [Random Numbers](@ref).
 # Examples
 ```jldoctest
 julia> srand(0); randstring()
-"Qgt7sUOP"
+"0IPrGg0J"
 
 julia> randstring(MersenneTwister(0), 'a':'z', 6)
-"oevnou"
+"aszvqk"
 
 julia> randstring("ACGT")
 "TATCGGTC"