use box horizontal marker for admonitions, and color them depending o…

…n their title (JuliaLang#25627)

base/markdown/render/terminal/render.jl

@@ -26,27 +26,38 @@ end
 function term(io::IO, md::BlockQuote, columns)
  s = sprint(term, md.content, columns - 10; context=io)
  for line in split(rstrip(s), "\n")
- println(io, " "^margin, "|", line)
+ println(io, " "^margin, "│", line)
  end
 end
 
 function term(io::IO, md::Admonition, columns)
- print(io, " "^margin, "| ")
- print_with_color(:bold, io, isempty(md.title) ? md.category : md.title)
- println(io, "\n", " "^margin, "|")
+ col = :default
+ if lowercase(md.title) == "danger"
+ col = Base.error_color()
+ elseif lowercase(md.title) == "warning"
+ col = Base.warn_color()
+ elseif lowercase(md.title) in ("info", "note")
+ col = Base.info_color()
+ elseif lowercase(md.title) == "tip"
+ col = :green
+ end
+ print_with_color(col, io, " "^margin, "│ "; bold = true)
+ print_with_color(col, io, isempty(md.title) ? md.category : md.title; bold = true)
+ print_with_color(col, io, "\n", " "^margin, "│", "\n"; bold = true)
  s = sprint(term, md.content, columns - 10; context=io)
  for line in split(rstrip(s), "\n")
- println(io, " "^margin, "|", line)
+ print_with_color(col, io, " "^margin, "│"; bold = true)
+ println(io, line)
  end
 end
 
 function term(io::IO, f::Footnote, columns)
- print(io, " "^margin, "| ")
+ print(io, " "^margin, "│ ")
  print_with_color(:bold, io, "[^$(f.id)]")
- println(io, "\n", " "^margin, "|")
+ println(io, "\n", " "^margin, "│")
  s = sprint(term, f.text, columns - 10; context=io)
  for line in split(rstrip(s), "\n")
- println(io, " "^margin, "|", line)
+ println(io, " "^margin, "│", line)
  end
 end
 

test/markdown.jl

@@ -312,7 +312,7 @@ table = md"""
 # mime output
 let out =
  @test sprint(show, "text/plain", book) ==
- " Title\n ≡≡≡≡≡≡≡\n\n Some discussion\n\n | A quote\n\n Section important\n ===================\n\n Some bolded\n\n • list1\n \n • list2\n \n"
+ " Title\n ≡≡≡≡≡≡≡\n\n Some discussion\n\n │ A quote\n\n Section important\n ===================\n\n Some bolded\n\n • list1\n \n • list2\n \n"
  @test sprint(show, "text/markdown", book) ==
  """
  # Title