refactor(conventional_commits): make schema_pattern more readable

Author: bearomorphism

commitizen/cz/conventional_commits/conventional_commits.py

@@ -185,11 +185,27 @@ def schema(self) -> str:
         )
 
     def schema_pattern(self) -> str:
+        change_types = (
+            "build",
+            "bump",
+            "chore",
+            "ci",
+            "docs",
+            "feat",
+            "fix",
+            "perf",
+            "refactor",
+            "revert",
+            "style",
+            "test",
+        )
         return (
             r"(?s)"  # To explicitly make . match new line
-            r"(build|ci|docs|feat|fix|perf|refactor|style|test|chore|revert|bump)"  # type
-            r"(\(\S+\))?!?:"  # scope
-            r"( [^\n\r]+)"  # subject
+            r"(" + "|".join(change_types) + r")"  # type
+            r"(\(\S+\))?"  # scope
+            r"!?"
+            r": "
+            r"([^\n\r]+)"  # subject
             r"((\n\n.*)|(\s*))?$"
         )