Markdown: prevent display() error with empty list item (#40122)

JuliaLang · Mar 23, 2021 · cc639ec · cc639ec · nanosoldier · Mar 24, 2021
1 parent e3dffb9
commit cc639ec
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diff --git a/stdlib/Markdown/src/render/terminal/formatting.jl b/stdlib/Markdown/src/render/terminal/formatting.jl
@@ -42,6 +42,7 @@ wrapped_lines(io::IO, f::Function, args...; width = 80, i = 0) =
 
 function print_wrapped(io::IO, s...; width = 80, pre = "", i = 0)
  lines = wrapped_lines(io, s..., width = width, i = i)
+ isempty(lines) && return 0, 0
  print(io, lines[1])
  for line in lines[2:end]
  print(io, '\n', pre, line)

diff --git a/stdlib/Markdown/test/runtests.jl b/stdlib/Markdown/test/runtests.jl
@@ -1213,3 +1213,12 @@ end
  | $x |
  """)
 end
+
+@testset "issue 40080: empty list item breaks display()" begin
+ d = TextDisplay(devnull)
+ display(d, md"""
+ 1. hello
+ 2.
+ """)
+end
+