Add support for parsing diffs with redundant closing markdown backticks and clean up trailing empty code block markers

Author: robertpiosik

packages/vscode/src/commands/apply-chat-response-command/utils/clipboard-parser/clipboard-parser.spec.ts

@@ -1730,5 +1730,23 @@ describe('clipboard-parser', () => {
         content: load_test_case_file(test_case, '1-file.txt')
       })
     })
+
+    it('parses diff format with redundant closing backticks', () => {
+      const test_case = 'diff-markdown-redundant-closing-backticks'
+      const text = load_test_case_file(
+        test_case,
+        'diff-markdown-redundant-closing-backticks.txt'
+      )
+      const result = parse_response({
+        response: text,
+        is_single_root_folder_workspace: true
+      })
+      expect(result).toHaveLength(1)
+      expect(result[0]).toMatchObject({
+        type: 'diff',
+        file_path: 'src/index.ts',
+        content: load_test_case_file(test_case, '1-file.txt')
+      })
+    })
   })
 })

packages/vscode/src/commands/apply-chat-response-command/utils/clipboard-parser/extract-diff-patches/extract-diffs.ts

@@ -818,6 +818,13 @@ const extract_all_code_block_patches = (params: {
     )
   }
 
+  if (items.length > 0) {
+    const last_item = items[items.length - 1]
+    if (last_item.type == 'text' && last_item.content.trim() == '```') {
+      items.pop()
+    }
+  }
+
   return items
 }
 

packages/vscode/src/commands/apply-chat-response-command/utils/clipboard-parser/test-cases/diff-markdown-redundant-closing-backticks/1-file.txt

@@ -0,0 +1,6 @@
+--- a/src/index.ts
++++ b/src/index.ts
+@@ -1,3 +1,3 @@
+ console.log("hello")
+-console.log("old message")
++console.log("new message")

packages/vscode/src/commands/apply-chat-response-command/utils/clipboard-parser/test-cases/diff-markdown-redundant-closing-backticks/diff-markdown-redundant-closing-backticks.txt

@@ -0,0 +1,9 @@
+```diff
+--- a/src/index.ts
++++ b/src/index.ts
+@@ -1,3 +1,3 @@
+ console.log("hello")
+-console.log("old message")
++console.log("new message")
+```
+```