Fix false positive when import and usage are on the same line (#292) (#324)

Change strict less-than to less-than-or-equal in Name.match_2 lineno
comparison so that semicolon-separated import+usage on the same line
is correctly recognized as used.

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: hakancelikdev

src/unimport/statement.py

@@ -167,9 +167,9 @@ def match_2(self, imp: Import | ImportFrom) -> bool:
             sub_match = (
                 not primary_match and imp.is_match_sub_packages(self.name) and not self._has_more_specific_import(imp)
             )
-            is_match = (imp.lineno < self.lineno or self._is_deferred_usage(imp)) and (primary_match or sub_match)
+            is_match = (imp.lineno <= self.lineno or self._is_deferred_usage(imp)) and (primary_match or sub_match)
         else:
-            is_match = (imp.lineno < self.lineno or self._is_deferred_usage(imp)) and (
+            is_match = (imp.lineno <= self.lineno or self._is_deferred_usage(imp)) and (
                 self.name == imp.name or imp.is_match_sub_packages(self.name)
             )
 

tests/cases/analyzer/statement/semicolon_same_line.py

@@ -0,0 +1,21 @@
+from typing import Union
+
+from unimport.statement import Import, ImportFrom, Name
+
+__all__ = ["NAMES", "IMPORTS", "UNUSED_IMPORTS"]
+
+
+NAMES: list[Name] = [
+    Name(lineno=1, name="print", is_all=False),
+    Name(lineno=1, name="pathlib.Path", is_all=False),
+    Name(lineno=1, name="__file__", is_all=False),
+    Name(lineno=2, name="sys.exit", is_all=False),
+    Name(lineno=2, name="doctest.testmod", is_all=False),
+    Name(lineno=2, name="doctest.ELLIPSIS", is_all=False),
+]
+IMPORTS: list[Union[Import, ImportFrom]] = [
+    Import(lineno=1, column=1, name="pathlib", package="pathlib"),
+    Import(lineno=2, column=1, name="doctest", package="doctest"),
+    Import(lineno=2, column=2, name="sys", package="sys"),
+]
+UNUSED_IMPORTS: list[Union[Import, ImportFrom]] = []

tests/cases/refactor/statement/semicolon_same_line.py

@@ -0,0 +1,2 @@
+if True: import pathlib; print(pathlib.Path(__file__))
+if True: import doctest, sys; sys.exit(doctest.testmod(optionflags=doctest.ELLIPSIS)[0])

tests/cases/source/statement/semicolon_same_line.py

@@ -0,0 +1,2 @@
+if True: import pathlib; print(pathlib.Path(__file__))
+if True: import doctest, sys; sys.exit(doctest.testmod(optionflags=doctest.ELLIPSIS)[0])