From 0f90a399a886ea7f69bf482415e6c4cdcb7269b3 Mon Sep 17 00:00:00 2001
From: Dimitri van Heesch <doxygen@gmail.com>
Date: Mon, 16 Sep 2019 20:38:22 +0200
Subject: Generalized the HTML comment detection and handling

---
 src/markdown.cpp | 11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)

diff --git a/src/markdown.cpp b/src/markdown.cpp
index 48f3dbc..e63bf10 100644
--- a/src/markdown.cpp
+++ b/src/markdown.cpp
@@ -480,8 +480,7 @@ static int processNmdash(GrowBuf &out,const char *data,int off,int size)
   {
     count++;
   }
-  if ((count==2 || count==3)&& off>=2 && qstrncmp(data-2,"<!",2)==0) return 2-count; // start HTML comment
-  if (count>=4 && off>=2 && qstrncmp(data-2,"<!",2)==0) return -1; // start HTML comment
+  if (count>=2 && off>=2 && qstrncmp(data-2,"<!",2)==0) return 1-count; // start HTML comment
   if (count==2 && (data[2]=='>')) return 0; // end HTML comment
   if (count==2 && (off<8 || qstrncmp(data-8,"operator",8)!=0)) // -- => ndash
   {
@@ -1085,13 +1084,9 @@ static void processInline(GrowBuf &out,const char *data,int size)
     if (end>=size) break;
     i=end;
     end = action(out,data+i,i,size-i);
-    if (!end)
+    if (end<=0)
     {
-      end=i+1;
-    }
-    else if (end < 0)
-    {
-      end=i-end+1;
+      end=i+1-end;
     }
     else
     {
-- 
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