fix check for level < 1 in Markdown header (#22087)

* fix check for level < 1 in header

stdlib/Markdown/src/Common/block.jl

@@ -53,7 +53,7 @@ function hashheader(stream::IO, md::MD)
  eatindent(stream) || return false
  level = 0
  while startswith(stream, '#') level += 1 end
- level < 1 || level > 6 && return false
+ (level < 1 || level > 6) && return false
 
  c = ' '
  # Allow empty headers, but require a space

stdlib/Markdown/test/runtests.jl

@@ -1066,41 +1066,5 @@ let text =
  end
 end
 
-# different output depending on whether color is requested:
-let buf = IOBuffer()
- show(buf, "text/plain", md"*emph*")
- @test String(take!(buf)) == " emph\n"
- show(buf, "text/markdown", md"*emph*")
- @test String(take!(buf)) == "*emph*\n"
- show(IOContext(buf, :color=>true), "text/plain", md"*emph*")
- @test String(take!(buf)) == " \e[4memph\e[24m\n"
-end
-
-# table rendering with term #25213
-t = """
- a | b
- :-- | --:
- 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
-
-let
- v = Markdown.parse("foo\n\n- 1\n- 2\n\n- 3\n\n\n- 1\n- 2\n\nbar\n\n- 1\n\n 2\n- 4\n\nbuz\n\n- 1\n- 2\n 3\n- 4\n")
- @test v.content[2].loose
- @test !v.content[3].loose
- @test v.content[5].loose
- @test !v.content[7].loose
-end
+# issue 20225, check this can print
+@test typeof(sprint(Markdown.term, Markdown.parse(" "))) == String