From 54b948f41c7795bd337a10e521f36d6b78b87adc Mon Sep 17 00:00:00 2001
From: Serhiy Storchaka <storchaka@gmail.com>
Date: Wed, 1 Jul 2026 09:21:33 +0300
Subject: [PATCH] gh-80504: Always show the full search path in IDLE Find in
 Files

The "In files:" field of the Find in Files dialog now always contains a
full directory path, so the grep output shows which directory was searched.
---
 Lib/idlelib/grep.py                           | 20 ++++++++++++++-----
 Lib/idlelib/idle_test/test_grep.py            | 19 ++++++++++++++++++
 ...026-07-01-16-00-00.gh-issue-80504.gReP.rst |  3 +++
 3 files changed, 37 insertions(+), 5 deletions(-)
 create mode 100644 Misc/NEWS.d/next/IDLE/2026-07-01-16-00-00.gh-issue-80504.gReP.rst

diff --git a/Lib/idlelib/grep.py b/Lib/idlelib/grep.py
index 42048ff2395fe19..5d604faec23f32d 100644
--- a/Lib/idlelib/grep.py
+++ b/Lib/idlelib/grep.py
@@ -40,6 +40,20 @@ def grep(text, io=None, flist=None):
     dialog.open(text, searchphrase, io)
 
 
+def default_glob(path):
+    """Return the initial "In files:" pattern for a file path (gh-80504).
+
+    Always include a full directory so that grep output shows which
+    directory was searched.
+    """
+    dir, base = os.path.split(path)
+    dir = os.path.abspath(dir)  # An empty dir becomes the current directory.
+    head, tail = os.path.splitext(base)
+    if not tail:
+        tail = ".py"
+    return os.path.join(dir, "*" + tail)
+
+
 def walk_error(msg):
     "Handle os.walk error."
     print(msg)
@@ -103,11 +117,7 @@ def open(self, text, searchphrase, io=None):
             path = io.filename or ""
         else:
             path = ""
-        dir, base = os.path.split(path)
-        head, tail = os.path.splitext(base)
-        if not tail:
-            tail = ".py"
-        self.globvar.set(os.path.join(dir, "*" + tail))
+        self.globvar.set(default_glob(path))
 
     def create_entries(self):
         "Create base entry widgets and add widget for search path."
diff --git a/Lib/idlelib/idle_test/test_grep.py b/Lib/idlelib/idle_test/test_grep.py
index d67dba76911fcfa..94f217effb656e1 100644
--- a/Lib/idlelib/idle_test/test_grep.py
+++ b/Lib/idlelib/idle_test/test_grep.py
@@ -37,6 +37,25 @@ def close(self):  # gui method
 _grep = Dummy_grep()
 
 
+class DefaultGlobTest(unittest.TestCase):
+
+    def test_no_path(self):
+        # gh-80504: an unsaved editor or the Shell has no path, so the
+        # pattern uses the current directory, not just '*.py'.
+        self.assertEqual(grep.default_glob(''),
+                         os.path.join(os.getcwd(), '*.py'))
+
+    def test_full_path(self):
+        path = os.path.join(os.path.abspath(os.sep), 'ab', 'foo.py')
+        self.assertEqual(grep.default_glob(path),
+                         os.path.join(os.path.dirname(path), '*.py'))
+
+    def test_other_extension(self):
+        path = os.path.join(os.path.abspath(os.sep), 'ab', 'foo.txt')
+        self.assertEqual(grep.default_glob(path),
+                         os.path.join(os.path.dirname(path), '*.txt'))
+
+
 class FindfilesTest(unittest.TestCase):
 
     @classmethod
diff --git a/Misc/NEWS.d/next/IDLE/2026-07-01-16-00-00.gh-issue-80504.gReP.rst b/Misc/NEWS.d/next/IDLE/2026-07-01-16-00-00.gh-issue-80504.gReP.rst
new file mode 100644
index 000000000000000..93adb33202a41c1
--- /dev/null
+++ b/Misc/NEWS.d/next/IDLE/2026-07-01-16-00-00.gh-issue-80504.gReP.rst
@@ -0,0 +1,3 @@
+The "In files:" field of IDLE's Find in Files dialog now always contains a
+full directory path, even for an unsaved editor or the Shell.  This shows
+in the grep output which directory was searched.