From 29f13f3e2e6e6d51ffb25dbb9bf3739327986257 Mon Sep 17 00:00:00 2001
From: Fredrik Ekre <ekrefredrik@gmail.com>
Date: Tue, 13 Nov 2018 10:15:42 +0100
Subject: [PATCH] Define text/latex printing of HorizontalRule with the latex
 function, fix #29995.

(cherry picked from commit 2f5e5b3b6de5f27103dcf48bd1cd36cdf930fad9)
---
 stdlib/Markdown/src/render/latex.jl | 3 +++
 stdlib/Markdown/test/runtests.jl    | 6 ++++++
 2 files changed, 9 insertions(+)

diff --git a/stdlib/Markdown/src/render/latex.jl b/stdlib/Markdown/src/render/latex.jl
index 1e885a578d588..9a6ea41ead99c 100644
--- a/stdlib/Markdown/src/render/latex.jl
+++ b/stdlib/Markdown/src/render/latex.jl
@@ -101,6 +101,9 @@ function latex(io::IO, md::List)
 end
 
 function show(io::IO, ::MIME"text/latex", md::HorizontalRule)
+    latex(io, md)
+end
+function latex(io::IO, md::HorizontalRule)
     println(io, "\\rule{\\textwidth}{1pt}")
 end
 
diff --git a/stdlib/Markdown/test/runtests.jl b/stdlib/Markdown/test/runtests.jl
index e1d03fdffaffd..6c5f82278eddf 100644
--- a/stdlib/Markdown/test/runtests.jl
+++ b/stdlib/Markdown/test/runtests.jl
@@ -1108,3 +1108,9 @@ let
     @test v.content[5].loose
     @test !v.content[7].loose
 end
+
+# issue #29995
+let m = Markdown.parse("---"), io = IOBuffer()
+    show(io, "text/latex", m)
+    @test String(take!(io)) == "\\rule{\\textwidth}{1pt}\n"
+end