Add Printf

Author: ararslan

README.md

@@ -98,6 +98,9 @@ Currently, the `@compat` macro supports the following syntaxes:
 * `using Compat.Unicode` is provided on versions older than 0.7, where this library is not
   yet a part of the standard library. ([#25021])
 
+* `using Compat.Printf` is provided on versions older than 0.7, where this library is not
+  yet a part of the standard library. ([#25056])
+
 ## New functions, macros, and methods
 
 * `@views` takes an expression and converts all slices to views ([#20164]), while
@@ -396,3 +399,4 @@ includes this fix. Find the minimum version from there.
 [#24785]: https://github.com/JuliaLang/julia/issues/24785
 [#25012]: https://github.com/JuliaLang/julia/issues/25012
 [#25021]: https://github.com/JuliaLang/julia/issues/25021
+[#25056]: https://github.com/JuliaLang/julia/issues/25056

src/Compat.jl

@@ -763,6 +763,12 @@ else
     import Dates
 end
 
+if VERSION < v"0.7.0-DEV.3052"
+    const Printf = Base.Printf
+else
+    import Printf
+end
+
 # 0.7.0-DEV.1993
 @static if !isdefined(Base, :EqualTo)
     if VERSION >= v"0.6.0"

test/runtests.jl

@@ -902,6 +902,16 @@ module Test24459
     @test isdefined(@__MODULE__, :Dates)
 end
 
+# 0.7
+module Test25056
+    using Compat
+    using Compat.Test
+    using Compat.Printf
+    @test isdefined(@__MODULE__, :Printf)
+    @test isdefined(@__MODULE__, Symbol("@printf"))
+    @test isdefined(@__MODULE__, Symbol("@sprintf"))
+end
+
 let a = [0,1,2,3,0,1,2,3]
     @test findfirst(equalto(3), [1,2,4,1,2,3,4]) == 6
     @test findfirst(!equalto(1), [1,2,4,1,2,3,4]) == 2