refactor: update stale issue handling and edit block replacement logic

.github/workflows/close-stale.yml

@@ -13,8 +13,8 @@ jobs:
     steps:
       - uses: actions/stale@v9
         with:
-          stale-issue-message: 'This issue is stale because it has been open 14 days with no activity. Remove stale label or add a comment to keep this issue open. Otherwise, it will be closed in 7 days.'
-          close-issue-message: 'This issue was closed because it has been stalled for 21 days with no activity. Feel free to add a comment here and we can re-open it. Or feel free to file a new issue any time.'
+          stale-issue-message: 'This issue has been labelled stale because it has been open for 2 weeks with no activity. Remove stale label or add a comment to keep this issue open. Otherwise, it will be closed in 7 days.'
+          close-issue-message: 'This issue was closed because it has been stalled for 3 weeks with no activity. Feel free to add a comment here and we can re-open it. Or feel free to file a new issue any time.'
           days-before-stale: 14
           days-before-close: 7
           stale-issue-label: 'stale'

aider/coders/editblock_prompts.py

@@ -159,8 +159,9 @@ Use the *FULL* file path, as shown to you by the user.
 Every *SEARCH* section must *EXACTLY MATCH* the existing file content, character for character, including all comments, docstrings, etc.
 If the file contains code or other data wrapped/escaped in json/xml/quotes or other containers, you need to propose edits to the literal contents of the file, including the container markup.
 
-*SEARCH/REPLACE* blocks will replace *all* matching occurrences.
-Include enough lines to make the SEARCH blocks uniquely match the lines to change.
+*SEARCH/REPLACE* blocks will *only* replace the first match occurrence.
+Including multiple unique *SEARCH/REPLACE* blocks if needed.
+Include enough lines in each SEARCH section to uniquely match each set of lines that need to change.
 
 Keep *SEARCH/REPLACE* blocks concise.
 Break large *SEARCH/REPLACE* blocks into a series of smaller blocks that each change a small portion of the file.

tests/basic/test_editblock.py

@@ -296,6 +296,28 @@ These changes replace the `subprocess.run` patches with `subprocess.check_output
         result = eb.replace_most_similar_chunk(whole, part, replace)
         self.assertEqual(result, expected_output)
 
+    def test_replace_multiple_matches(self):
+        "only replace first occurrence"
+
+        whole = "line1\nline2\nline1\nline3\n"
+        part = "line1\n"
+        replace = "new_line\n"
+        expected_output = "new_line\nline2\nline1\nline3\n"
+
+        result = eb.replace_most_similar_chunk(whole, part, replace)
+        self.assertEqual(result, expected_output)
+
+    def test_replace_multiple_matches_missing_whitespace(self):
+        "only replace first occurrence"
+
+        whole = "    line1\n    line2\n    line1\n    line3\n"
+        part = "line1\n"
+        replace = "new_line\n"
+        expected_output = "    new_line\n    line2\n    line1\n    line3\n"
+
+        result = eb.replace_most_similar_chunk(whole, part, replace)
+        self.assertEqual(result, expected_output)
+
     def test_replace_part_with_just_some_missing_leading_whitespace(self):
         whole = "    line1\n    line2\n    line3\n"
         part = " line1\n line2\n"
@@ -482,9 +504,7 @@ two
 Hope you like it!
 """
 
-        edits = list(
-            eb.find_original_update_blocks(edit, valid_fnames=["path/to/a/file1.txt"])
-        )
+        edits = list(eb.find_original_update_blocks(edit, valid_fnames=["path/to/a/file1.txt"]))
         self.assertEqual(
             edits,
             [