Revert "Fix repr on DateTime (#30200)"

This reverts commit 8d8b3d9.

Author: KristofferC

NEWS.md

@@ -81,9 +81,6 @@ Standard library changes
   form `kron(u, v')`, `u * v'`, and `u .* v'` where `u` and `v` are sparse vectors or column
   views ([#24980]).
 
-#### Dates
-* Fixed `repr` such that it displays `DateTime` as it would be entered in Julia ([#30200]).
-
 #### Statistics
 * `quantile` now accepts in all cases collections whose `eltype` is not a subtype of `Number` ([#30938]).
 
@@ -110,7 +107,6 @@ External dependencies
 [#29790]: https://github.com/JuliaLang/julia/issues/29790
 [#29998]: https://github.com/JuliaLang/julia/issues/29998
 [#30061]: https://github.com/JuliaLang/julia/issues/30061
-[#30200]: https://github.com/JuliaLang/julia/issues/30200
 [#30298]: https://github.com/JuliaLang/julia/issues/30298
 [#30323]: https://github.com/JuliaLang/julia/issues/30323
 [#30372]: https://github.com/JuliaLang/julia/issues/30372

stdlib/Dates/docs/src/index.md

@@ -400,29 +400,29 @@ As a bonus, all period arithmetic objects work directly with ranges:
 
 ```jldoctest
 julia> dr = Date(2014,1,29):Day(1):Date(2014,2,3)
-Date(2014, 1, 29):1 day:Date(2014, 2, 3)
+2014-01-29:1 day:2014-02-03
 
 julia> collect(dr)
 6-element Array{Date,1}:
- Date(2014, 1, 29)
- Date(2014, 1, 30)
- Date(2014, 1, 31)
- Date(2014, 2, 1)
- Date(2014, 2, 2)
- Date(2014, 2, 3)
+ 2014-01-29
+ 2014-01-30
+ 2014-01-31
+ 2014-02-01
+ 2014-02-02
+ 2014-02-03
 
 julia> dr = Date(2014,1,29):Dates.Month(1):Date(2014,07,29)
-Date(2014, 1, 29):1 month:Date(2014, 7, 29)
+2014-01-29:1 month:2014-07-29
 
 julia> collect(dr)
 7-element Array{Date,1}:
- Date(2014, 1, 29)
- Date(2014, 2, 28)
- Date(2014, 3, 29)
- Date(2014, 4, 29)
- Date(2014, 5, 29)
- Date(2014, 6, 29)
- Date(2014, 7, 29)
+ 2014-01-29
+ 2014-02-28
+ 2014-03-29
+ 2014-04-29
+ 2014-05-29
+ 2014-06-29
+ 2014-07-29
 ```
 
 ## Adjuster Functions
@@ -492,15 +492,14 @@ julia> filter(dr) do x
            Dates.dayofweekofmonth(x) == 2
        end
 8-element Array{Date,1}:
- Date(2014, 4, 8)
- Date(2014, 5, 13)
- Date(2014, 6, 10)
- Date(2014, 7, 8)
- Date(2014, 8, 12)
- Date(2014, 9, 9)
- Date(2014, 10, 14)
- Date(2014, 11, 11)
-
+ 2014-04-08
+ 2014-05-13
+ 2014-06-10
+ 2014-07-08
+ 2014-08-12
+ 2014-09-09
+ 2014-10-14
+ 2014-11-11
 ```
 
 Additional examples and tests are available in [`stdlib/Dates/test/adjusters.jl`](https://github.com/JuliaLang/julia/blob/master/stdlib/Dates/test/adjusters.jl).

stdlib/Dates/src/io.jl

@@ -530,48 +530,14 @@ end
 # show
 
 function Base.show(io::IO, dt::DateTime)
-    if get(io, :compact, false)
-        print(io, dt)
-    else
-        y,m,d = yearmonthday(dt)
-        h = hour(dt)
-        mi = minute(dt)
-        s = second(dt)
-        ms = millisecond(dt)
-        if ms == 0
-            print(io, "DateTime($y, $m, $d, $h, $mi, $s)")
-        else
-            print(io, "DateTime($y, $m, $d, $h, $mi, $s, $ms)")
-        end
-    end
-end
-
-function Base.show(io::IO, ::MIME"text/plain", dt::DateTime)
-    print(io, dt)
-end
-
-function Base.show(io::IO, ::MIME"text/plain", dt::Date)
-    print(io, dt)
-end
-
-function Base.show(io::IO, dt::Date)
-    if get(io, :compact, false)
-        print(io, dt)
-    else
-        y,m,d = yearmonthday(dt)
-        print(io, "Date($y, $m, $d)")
-    end
-end
-
-function Base.print(io::IO, dt::DateTime)
     if millisecond(dt) == 0
         format(io, dt, dateformat"YYYY-mm-dd\THH:MM:SS")
     else
         format(io, dt, dateformat"YYYY-mm-dd\THH:MM:SS.s")
     end
 end
 
-function Base.print(io::IO, dt::Date)
+function Base.show(io::IO, dt::Date)
     format(io, dt, dateformat"YYYY-mm-dd")
 end
 

stdlib/Dates/test/io.jl

@@ -7,7 +7,7 @@ using Dates
 
 @testset "string/show representation of Date" begin
     @test string(Dates.Date(1, 1, 1)) == "0001-01-01" # January 1st, 1 AD/CE
-    @test sprint(show, Dates.Date(1, 1, 1)) == "Date(1, 1, 1)"
+    @test sprint(show, Dates.Date(1, 1, 1)) == "0001-01-01"
     @test string(Dates.Date(0, 12, 31)) == "0000-12-31" # December 31, 1 BC/BCE
     @test Dates.Date(1, 1, 1) - Dates.Date(0, 12, 31) == Dates.Day(1)
     @test Dates.Date(Dates.UTD(-306)) == Dates.Date(0, 2, 29)
@@ -16,7 +16,7 @@ using Dates
     @test string(Dates.Date(-1000000, 1, 1)) == "-1000000-01-01"
     @test string(Dates.Date(1000000, 1, 1)) == "1000000-01-01"
     @test string(Dates.DateTime(2000, 1, 1, 0, 0, 0, 1)) == "2000-01-01T00:00:00.001"
-    @test sprint(show, Dates.DateTime(2000, 1, 1, 0, 0, 0, 1)) == "DateTime(2000, 1, 1, 0, 0, 0, 1)"
+    @test sprint(show, Dates.DateTime(2000, 1, 1, 0, 0, 0, 1)) == "2000-01-01T00:00:00.001"
     @test string(Dates.DateTime(2000, 1, 1, 0, 0, 0, 2)) == "2000-01-01T00:00:00.002"
     @test string(Dates.DateTime(2000, 1, 1, 0, 0, 0, 500)) == "2000-01-01T00:00:00.5"
     @test string(Dates.DateTime(2000, 1, 1, 0, 0, 0, 998)) == "2000-01-01T00:00:00.998"