Add a check to the current selection at the end, not just the start.

Author: hreikin

tkintermd/tkintermd_frame.py

@@ -383,7 +383,7 @@ def check_bold_italic(self, md_syntax, md_ignore, md_special):
         # Ignore items in the md_ignore variable and then deal with special
         # syntax individually. If string starts with anything in md_ignore do 
         # nothing and return from the function.
-        if str(self.cur_selection).startswith(self.md_ignore):
+        if str(self.cur_selection).startswith(self.md_ignore) or str(self.cur_selection).endswith(self.md_ignore):
             return
         # If the formatting requires special items which can't go in md_ignore
         # because they cause issues with markdown being applied incorrectly.