Handle fake CLI parsers

Author: clemsgrs

slide2vec/cli.py

@@ -17,8 +17,12 @@ def get_args_parser(add_help: bool = True):
 
 def parse_args(argv=None):
     parser = get_args_parser(add_help=True)
-    args, opts = parser.parse_known_args(argv)
-    args.opts = opts
+    if hasattr(parser, "parse_known_args"):
+        args, opts = parser.parse_known_args(argv)
+        args.opts = opts
+    else:
+        args = parser.parse_args(argv)
+        args.opts = getattr(args, "opts", [])
     return args
 
 

tasks/lessons.md

@@ -1,5 +1,9 @@
 # Lessons Learned
 
+## 2026-04-12
+
+- When refactoring CLI parsing to support `parse_known_args()`, keep existing test doubles in mind: if a fake parser only implements `parse_args()`, add a small compatibility fallback instead of forcing every monkeypatch to mirror the full parser API.
+
 ## 2026-04-10
 
 - In this environment, never route `apply_patch` through `exec_command`; use the dedicated `apply_patch` tool directly for file edits.