Add a final step to clean up multiple lines of new lines into single …

…line
mysticmind · Jun 18, 2024 · a6b7027 · a6b7027
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Showing 4 changed files with 16 additions and 9 deletions.
diff --git a/README.md b/README.md
@@ -19,15 +19,15 @@ If you have used and benefitted from this library. Please feel free to buy me a
 Install the package from NuGet using `Install-Package ReverseMarkdown` or clone the repository and built it yourself.
 
 <!-- snippet: Usage -->
-<a id='snippet-usage'></a>
+<a id='snippet-Usage'></a>
 ```cs
 var converter = new ReverseMarkdown.Converter();
 
 string html = "This a sample <strong>paragraph</strong> from <a href=\"http://test.com\">my site</a>";
 
 string result = converter.Convert(html);
 ```
-<sup><a href='/src/ReverseMarkdown.Test/Snippets.cs#L11-L19' title='Snippet source file'>snippet source</a> | <a href='#snippet-usage' title='Start of snippet'>anchor</a></sup>
+<sup><a href='/src/ReverseMarkdown.Test/Snippets.cs#L11-L19' title='Snippet source file'>snippet source</a> | <a href='#snippet-Usage' title='Start of snippet'>anchor</a></sup>
 <!-- endSnippet -->
 
 Will result in:
@@ -43,7 +43,7 @@ This a sample **paragraph** from [my site](http://test.com)
 The conversion can be customized:
 
 <!-- snippet: UsageWithConfig -->
-<a id='snippet-usagewithconfig'></a>
+<a id='snippet-UsageWithConfig'></a>
 ```cs
 var config = new ReverseMarkdown.Config
 {
@@ -59,7 +59,7 @@ var config = new ReverseMarkdown.Config
 
 var converter = new ReverseMarkdown.Converter(config);
 ```
-<sup><a href='/src/ReverseMarkdown.Test/Snippets.cs#L27-L43' title='Snippet source file'>snippet source</a> | <a href='#snippet-usagewithconfig' title='Start of snippet'>anchor</a></sup>
+<sup><a href='/src/ReverseMarkdown.Test/Snippets.cs#L27-L43' title='Snippet source file'>snippet source</a> | <a href='#snippet-UsageWithConfig' title='Start of snippet'>anchor</a></sup>
 <!-- endSnippet -->
 
 ## Configuration options

diff --git a/README.source.md b/README.source.md
@@ -12,15 +12,15 @@ If you have used and benefitted from this library. Please feel free to buy me a
 Install the package from NuGet using `Install-Package ReverseMarkdown` or clone the repository and build it yourself.
 
 <!-- snippet: Usage -->
-<a id='snippet-usage'></a>
+<a id='snippet-Usage'></a>
 ```cs
 var converter = new ReverseMarkdown.Converter();
 
 string html = "This a sample <strong>paragraph</strong> from <a href=\"http://test.com\">my site</a>";
 
 string result = converter.Convert(html);
 ```
-<sup><a href='/src/ReverseMarkdown.Test/Snippets.cs#L11-L19' title='Snippet source file'>snippet source</a> | <a href='#snippet-usage' title='Start of snippet'>anchor</a></sup>
+<sup><a href='/src/ReverseMarkdown.Test/Snippets.cs#L11-L19' title='Snippet source file'>snippet source</a> | <a href='#snippet-Usage' title='Start of snippet'>anchor</a></sup>
 <!-- endSnippet -->
 
 Will result in:
@@ -36,7 +36,7 @@ This a sample **paragraph** from [my site](http://test.com)
 The conversion can also be customized:
 
 <!-- snippet: UsageWithConfig -->
-<a id='snippet-usagewithconfig'></a>
+<a id='snippet-UsageWithConfig'></a>
 ```cs
 var config = new ReverseMarkdown.Config
 {
@@ -52,7 +52,7 @@ var config = new ReverseMarkdown.Config
 
 var converter = new ReverseMarkdown.Converter(config);
 ```
-<sup><a href='/src/ReverseMarkdown.Test/Snippets.cs#L27-L43' title='Snippet source file'>snippet source</a> | <a href='#snippet-usagewithconfig' title='Start of snippet'>anchor</a></sup>
+<sup><a href='/src/ReverseMarkdown.Test/Snippets.cs#L27-L43' title='Snippet source file'>snippet source</a> | <a href='#snippet-UsageWithConfig' title='Start of snippet'>anchor</a></sup>
 <!-- endSnippet -->
 
 ## Configuration options

diff --git a/src/ReverseMarkdown/Converter.cs b/src/ReverseMarkdown/Converter.cs
@@ -60,7 +60,7 @@ public string Convert(string html)
             // cleanup multiple new lines
             result = Regex.Replace( result, @"(^\p{Zs}*(\r\n|\n)){2,}", Environment.NewLine, RegexOptions.Multiline);
 
-            return result.Trim();
+            return result.Trim().FixMultipleNewlines();
         }
 
         public void Register(string tagName, IConverter converter)

diff --git a/src/ReverseMarkdown/StringUtils.cs b/src/ReverseMarkdown/StringUtils.cs
@@ -120,6 +120,13 @@ public static string EmphasizeContentWhitespaceGuard(this string content, string
 
             return $"{leadingSpaces}{emphasis}{content.Chomp(all:true)}{emphasis}{(trailingSpaces.Length > 0 ? trailingSpaces : nextSiblingSpaceSuffix)}";
         }
+
+        public static string FixMultipleNewlines(this string markdown)
+        {
+            var normalizedMarkdown = Regex.Replace(markdown, @"\r\n|\r|\n", "\n");
+            var pattern = @"\n{2,}";
+            return Regex.Replace(normalizedMarkdown, pattern, Environment.NewLine + Environment.NewLine);
+        }
 
         private static IEnumerable<T> DistinctBy<T, TKey>(this IEnumerable<T> enumerable, Func<T, TKey> keySelector)
         {