Don't silently discard prefixes

Tag kwarg prefixes were ignored when the value was a Pack. Now it's an error.
gilch · Dec 22, 2023 · 8eb0222 · 8eb0222
1 parent f9f2c80
commit 8eb0222
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/hissp/reader.py b/src/hissp/reader.py
@@ -476,6 +476,10 @@ def _custom_macro(self, form, tag: str, extras):
                 1,
             ):
                 if type(v) is Pack:
+                    if k:
+                        raise SyntaxError(
+                            f"Can't apply prefix {k}= to {v}.", self.position(self._pos)
+                        )
                     args.extend(v.args)
                     kwargs.update(v.kwargs)
                 elif k == "*":