Markdown stdlib (#492)

Project.toml

@@ -11,6 +11,7 @@ IterativeEigensolvers = "de555fa4-b82f-55e7-8b71-53f60bbc027d"
 Libdl = "8f399da3-3557-5675-b5ff-fb832c97cbdb"
 LibGit2 = "76f85450-5226-5b5a-8eaa-529ad045b433"
 LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
+Markdown = "d6f4376e-aef5-505a-96c1-9c027394607a"
 Mmap = "a63ad114-7e13-5084-954f-fe012c677804"
 Pkg = "fe1c5a76-5840-53d2-82f9-288dd83ce2ce"
 Printf = "de0858da-6303-5e67-8744-51eddeeeb8d7"

README.md

@@ -141,6 +141,9 @@ Currently, the `@compat` macro supports the following syntaxes:
 * `using Compat.UUIDs` is provided on versions older than 0.7, where this library is
   not yet part of the standard library ([#25819]).
 
+* `using Compat.Markdown` is provided on versions older than 0.7, where this library is
+  not yet part of the standard library ([#25738]).
+
 ## New functions, macros, and methods
 
 * `@views` takes an expression and converts all slices to views ([#20164]), while

src/Compat.jl

@@ -939,6 +939,12 @@ else
     import Random
 end
 
+if VERSION < v"0.7.0-DEV.3589"
+    const Markdown = Base.Markdown
+else
+    import Markdown
+end
+
 if VERSION < v"0.7.0-DEV.2609"
     @eval module SuiteSparse
         if Base.USE_GPL_LIBS

test/runtests.jl

@@ -1408,4 +1408,8 @@ module TestUUIDs
     @test uuid4() isa UUID
 end
 
+# 0.7.0-DEV.3589
+import Compat.Markdown
+@test isa(Markdown.parse("foo"), Markdown.MD)
+
 nothing