We are currently solving the following issue within our repository. Here is the issue text:
--- BEGIN ISSUE ---
alias `list` as `ls`?
I have been reaching for `dvc ls` out of habit instead of `dvc list`. Should we introduce an alias for `dvc list`?

--- END ISSUE ---

Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
--- BEGIN FILES ---
Path: `dvc/command/ls/__init__.py`
Content:
```
1 import argparse
2 import logging
3 
4 from dvc.command import completion
5 from dvc.command.base import CmdBaseNoRepo, append_doc_link
6 from dvc.command.ls.ls_colors import LsColors
7 from dvc.exceptions import DvcException
8 from dvc.ui import ui
9 
10 logger = logging.getLogger(__name__)
11 
12 
13 def _prettify(entries, with_color=False):
14     if with_color:
15         ls_colors = LsColors()
16         fmt = ls_colors.format
17     else:
18 
19         def fmt(entry):
20             return entry["path"]
21 
22     return [fmt(entry) for entry in entries]
23 
24 
25 class CmdList(CmdBaseNoRepo):
26     def run(self):
27         from dvc.repo import Repo
28 
29         try:
30             entries = Repo.ls(
31                 self.args.url,
32                 self.args.path,
33                 rev=self.args.rev,
34                 recursive=self.args.recursive,
35                 dvc_only=self.args.dvc_only,
36             )
37             if self.args.show_json:
38                 import json
39 
40                 ui.write(json.dumps(entries))
41             elif entries:
42                 entries = _prettify(entries, with_color=True)
43                 ui.write("\n".join(entries))
44             return 0
45         except DvcException:
46             logger.exception(f"failed to list '{self.args.url}'")
47             return 1
48 
49 
50 def add_parser(subparsers, parent_parser):
51     LIST_HELP = (
52         "List repository contents, including files"
53         " and directories tracked by DVC and by Git."
54     )
55     list_parser = subparsers.add_parser(
56         "list",
57         parents=[parent_parser],
58         description=append_doc_link(LIST_HELP, "list"),
59         help=LIST_HELP,
60         formatter_class=argparse.RawTextHelpFormatter,
61     )
62     list_parser.add_argument("url", help="Location of DVC repository to list")
63     list_parser.add_argument(
64         "-R",
65         "--recursive",
66         action="store_true",
67         help="Recursively list files.",
68     )
69     list_parser.add_argument(
70         "--dvc-only", action="store_true", help="Show only DVC outputs."
71     )
72     list_parser.add_argument(
73         "--show-json", action="store_true", help="Show output in JSON format."
74     )
75     list_parser.add_argument(
76         "--rev",
77         nargs="?",
78         help="Git revision (e.g. SHA, branch, tag)",
79         metavar="<commit>",
80     )
81     list_parser.add_argument(
82         "path",
83         nargs="?",
84         help="Path to directory within the repository to list outputs for",
85     ).complete = completion.DIR
86     list_parser.set_defaults(func=CmdList)
87
```
--- END FILES ---

Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.

Here is an example:

```diff
diff --git a/examples/server_async.py b/examples/server_async.py
--- a/examples/server_async.py
+++ b/examples/server_async.py
@@ -313,4 +313,4 @@
 
 
 if __name__ == "__main__":
-    asyncio.run(run_async_server("."), debug=True)
+    asyncio.run(run_async_server(), debug=True)
diff --git a/examples/server_sync.py b/examples/server_sync.py
--- a/examples/server_sync.py
+++ b/examples/server_sync.py
@@ -313,5 +313,5 @@
 
 
 if __name__ == "__main__":
-    server = run_sync_server(".")
+    server = run_sync_server()
     server.shutdown()

```

diff --git a/dvc/command/ls/__init__.py b/dvc/command/ls/__init__.py
--- a/dvc/command/ls/__init__.py
+++ b/dvc/command/ls/__init__.py
@@ -54,6 +54,7 @@
     )
     list_parser = subparsers.add_parser(
         "list",
+        aliases=["ls"],
         parents=[parent_parser],
         description=append_doc_link(LIST_HELP, "list"),
         help=LIST_HELP,

{"golden_diff": "diff --git a/dvc/command/ls/__init__.py b/dvc/command/ls/__init__.py\n--- a/dvc/command/ls/__init__.py\n+++ b/dvc/command/ls/__init__.py\n@@ -54,6 +54,7 @@\n     )\n     list_parser = subparsers.add_parser(\n         \"list\",\n+        aliases=[\"ls\"],\n         parents=[parent_parser],\n         description=append_doc_link(LIST_HELP, \"list\"),\n         help=LIST_HELP,\n", "issue": "alias `list` as `ls`?\nI have been reaching for `dvc ls` out of habit instead of `dvc list`. Should we introduce an alias for `dvc list`?\n", "before_files": [{"content": "import argparse\nimport logging\n\nfrom dvc.command import completion\nfrom dvc.command.base import CmdBaseNoRepo, append_doc_link\nfrom dvc.command.ls.ls_colors import LsColors\nfrom dvc.exceptions import DvcException\nfrom dvc.ui import ui\n\nlogger = logging.getLogger(__name__)\n\n\ndef _prettify(entries, with_color=False):\n    if with_color:\n        ls_colors = LsColors()\n        fmt = ls_colors.format\n    else:\n\n        def fmt(entry):\n            return entry[\"path\"]\n\n    return [fmt(entry) for entry in entries]\n\n\nclass CmdList(CmdBaseNoRepo):\n    def run(self):\n        from dvc.repo import Repo\n\n        try:\n            entries = Repo.ls(\n                self.args.url,\n                self.args.path,\n                rev=self.args.rev,\n                recursive=self.args.recursive,\n                dvc_only=self.args.dvc_only,\n            )\n            if self.args.show_json:\n                import json\n\n                ui.write(json.dumps(entries))\n            elif entries:\n                entries = _prettify(entries, with_color=True)\n                ui.write(\"\\n\".join(entries))\n            return 0\n        except DvcException:\n            logger.exception(f\"failed to list '{self.args.url}'\")\n            return 1\n\n\ndef add_parser(subparsers, parent_parser):\n    LIST_HELP = (\n        \"List repository contents, including files\"\n        \" and directories tracked by DVC and by Git.\"\n    )\n    list_parser = subparsers.add_parser(\n        \"list\",\n        parents=[parent_parser],\n        description=append_doc_link(LIST_HELP, \"list\"),\n        help=LIST_HELP,\n        formatter_class=argparse.RawTextHelpFormatter,\n    )\n    list_parser.add_argument(\"url\", help=\"Location of DVC repository to list\")\n    list_parser.add_argument(\n        \"-R\",\n        \"--recursive\",\n        action=\"store_true\",\n        help=\"Recursively list files.\",\n    )\n    list_parser.add_argument(\n        \"--dvc-only\", action=\"store_true\", help=\"Show only DVC outputs.\"\n    )\n    list_parser.add_argument(\n        \"--show-json\", action=\"store_true\", help=\"Show output in JSON format.\"\n    )\n    list_parser.add_argument(\n        \"--rev\",\n        nargs=\"?\",\n        help=\"Git revision (e.g. SHA, branch, tag)\",\n        metavar=\"<commit>\",\n    )\n    list_parser.add_argument(\n        \"path\",\n        nargs=\"?\",\n        help=\"Path to directory within the repository to list outputs for\",\n    ).complete = completion.DIR\n    list_parser.set_defaults(func=CmdList)\n", "path": "dvc/command/ls/__init__.py"}], "after_files": [{"content": "import argparse\nimport logging\n\nfrom dvc.command import completion\nfrom dvc.command.base import CmdBaseNoRepo, append_doc_link\nfrom dvc.command.ls.ls_colors import LsColors\nfrom dvc.exceptions import DvcException\nfrom dvc.ui import ui\n\nlogger = logging.getLogger(__name__)\n\n\ndef _prettify(entries, with_color=False):\n    if with_color:\n        ls_colors = LsColors()\n        fmt = ls_colors.format\n    else:\n\n        def fmt(entry):\n            return entry[\"path\"]\n\n    return [fmt(entry) for entry in entries]\n\n\nclass CmdList(CmdBaseNoRepo):\n    def run(self):\n        from dvc.repo import Repo\n\n        try:\n            entries = Repo.ls(\n                self.args.url,\n                self.args.path,\n                rev=self.args.rev,\n                recursive=self.args.recursive,\n                dvc_only=self.args.dvc_only,\n            )\n            if self.args.show_json:\n                import json\n\n                ui.write(json.dumps(entries))\n            elif entries:\n                entries = _prettify(entries, with_color=True)\n                ui.write(\"\\n\".join(entries))\n            return 0\n        except DvcException:\n            logger.exception(f\"failed to list '{self.args.url}'\")\n            return 1\n\n\ndef add_parser(subparsers, parent_parser):\n    LIST_HELP = (\n        \"List repository contents, including files\"\n        \" and directories tracked by DVC and by Git.\"\n    )\n    list_parser = subparsers.add_parser(\n        \"list\",\n        aliases=[\"ls\"],\n        parents=[parent_parser],\n        description=append_doc_link(LIST_HELP, \"list\"),\n        help=LIST_HELP,\n        formatter_class=argparse.RawTextHelpFormatter,\n    )\n    list_parser.add_argument(\"url\", help=\"Location of DVC repository to list\")\n    list_parser.add_argument(\n        \"-R\",\n        \"--recursive\",\n        action=\"store_true\",\n        help=\"Recursively list files.\",\n    )\n    list_parser.add_argument(\n        \"--dvc-only\", action=\"store_true\", help=\"Show only DVC outputs.\"\n    )\n    list_parser.add_argument(\n        \"--show-json\", action=\"store_true\", help=\"Show output in JSON format.\"\n    )\n    list_parser.add_argument(\n        \"--rev\",\n        nargs=\"?\",\n        help=\"Git revision (e.g. SHA, branch, tag)\",\n        metavar=\"<commit>\",\n    )\n    list_parser.add_argument(\n        \"path\",\n        nargs=\"?\",\n        help=\"Path to directory within the repository to list outputs for\",\n    ).complete = completion.DIR\n    list_parser.set_defaults(func=CmdList)\n", "path": "dvc/command/ls/__init__.py"}]}