Merge pull request RasaHQ#4718 from yulkes/bugfix_allow_colon_in_section_title

Support Markdown sections where the title contains the delimiter (:)

Author: tabergma

data/test/markdown_single_sections/section_with_delimiter.md

@@ -0,0 +1,2 @@
+## synonym:10:00
+- 10:00 am

rasa/nlu/training_data/formats/markdown.py

@@ -89,7 +89,7 @@ def _strip_comments(text: Text) -> Text:
     def _find_section_header(self, line: Text) -> Optional[Tuple[Text, Text]]:
         """Checks if the current line contains a section header
         and returns the section and the title."""
-        match = re.search(r"##\s*(.+):(.+)", line)
+        match = re.search(r"##\s*(.+?):(.+)", line)
         if match is not None:
             return match.group(1), match.group(2)
 

tests/nlu/base/test_training_data.py

@@ -588,3 +588,10 @@ def test_markdown_not_existing_section():
         training_data.load_data(
             "data/test/markdown_single_sections/not_existing_section.md"
         )
+
+
+def test_section_value_with_delimiter():
+    td_section_with_delimiter = training_data.load_data(
+        "data/test/markdown_single_sections/section_with_delimiter.md"
+    )
+    assert td_section_with_delimiter.entity_synonyms == {"10:00 am": "10:00"}