markdown: Base.copy for Markdown.MD (#25315)

JuliaLang · Jan 15, 2018 · 11dcd63 · 11dcd63 · nanosoldier · Jan 15, 2018
1 parent 1a416fb
commit 11dcd63
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diff --git a/base/markdown/parse/parse.jl b/base/markdown/parse/parse.jl
@@ -26,6 +26,7 @@ Base.setindex!(md::MD, args...) = setindex!(md.content, args...)
 Base.endof(md::MD) = endof(md.content)
 Base.length(md::MD) = length(md.content)
 Base.isempty(md::MD) = isempty(md.content)
+Base.copy(md::MD) = MD(copy(md.content), copy(md.meta))
 
 ==(a::MD, b::MD) = (html(a) == html(b))
 

diff --git a/test/markdown.jl b/test/markdown.jl
@@ -1079,3 +1079,17 @@ t = """
     :-- | --:
     1   |   2"""
 @test sprint(Markdown.term, Markdown.parse(t), 0) == "a b\n– –\n1 2\n"
+
+# test Base.copy
+let
+    md = doc"test"
+    md′ = copy(md)
+    @test length(md) == length(md′) == 1
+    push!(md, "new")
+    @test length(md) == 2
+    @test length(md′) == 1
+
+    @test !haskey(md.meta, :foo)
+    md.meta[:foo] = 42
+    @test !haskey(md′.meta, :foo)
+end