treat "---\n" as ruler (hr) - smu - smu - simple markup (Markdown) processor (fork, fixes + features)
  HTML git clone git://git.codemadness.org/smu
   DIR Log
   DIR Files
   DIR Refs
   DIR README
   DIR LICENSE
       ---
   DIR commit 469673436b2708e885b9e95f0f792a7ffe10ac86
   DIR parent 03f280144ca5290651031862f802e4bf39fa2dc5
  HTML Author: Hiltjo Posthuma <hiltjo@codemadness.org>
       Date:   Thu, 13 May 2021 16:58:09 +0200
       
       treat "---\n" as ruler (hr)
       
       other Markdown parsers do this
       
       Diffstat:
         M smu.c                               |       1 +
         M testdoc                             |       2 ++
       
       2 files changed, 3 insertions(+), 0 deletions(-)
       ---
   DIR diff --git a/smu.c b/smu.c
       @@ -55,6 +55,7 @@ static Tag lineprefix[] = {
                { "## ",        1,        "<h2>",                "</h2>" },
                { "# ",                1,        "<h1>",                "</h1>" },
                { "- - -\n",        1,        "<hr />",        ""},
       +        { "---\n",        1,        "<hr />",        ""},
        };
        
        static Tag underline[] = {
   DIR diff --git a/testdoc b/testdoc
       @@ -15,6 +15,8 @@ horizontal rule:
        
        - - -
        
       +---
       +
        
        blocks and entities
        -------------------