Fixed an issue with character encoding

examples/sample2.md

@@ -0,0 +1,23 @@
+# test file
+
+## Lorem ipsum
+
+Lorem ipsum dolor sit amet, consectetur adipiscing elit. Mauris massa eros, feugiat eu dapibus nec, fermentum vel ex. Nulla malesuada luctus pretium. Phasellus ac felis ut nisi lacinia malesuada nec vel odio. Donec tincidunt tincidunt lorem vel tempus. Nullam sed efficitur ligula, a porttitor nibh. Praesent justo dui, venenatis ac mi non, laoreet consequat libero. Aenean ut molestie mauris. Proin mattis volutpat ligula eget tincidunt. Fusce ex eros, condimentum consectetur efficitur vitae, euismod at justo.
+
+**Usage**
+
+<div class="usage">
+<div class="left">
+	<p><span class="box">item1</span></p>
+	<p><span class="box">item2</span></p>
+	<p><span class="box">item3</span></p>
+	<p><span class="box">item4</span></p>
+</div>
+	<p class="right">+ final</p>
+</div>
+
+## Callout
+
+> [!info] Example
+> Callout example
+> Careful with BS4 encoding some characters

program/convert-usage.py

@@ -29,7 +29,9 @@ def write_file(filename, text):
 ### Replace ###
 
 def convert_pattern(text):
-    text = re.sub(re_usage, '', text, flags=re.MULTILINE)
+    text, success = re.subn(re_usage, '', text, flags=re.MULTILINE)
+    if (success == 0):
+        return text
 
     soup = BeautifulSoup(text, features="html.parser")
 
@@ -40,7 +42,7 @@ def convert_pattern(text):
         calloutTitle = BeautifulSoup(callout_title_html, features="html.parser")
         tag.insert_before(calloutTitle)
 
-    return str(soup)
+    return (soup.decode(False, formatter=None))
 
 
 ### Execution ###