We are currently solving the following issue within our repository. Here is the issue text:
--- BEGIN ISSUE ---
REPL crashes when ~/.hy-history is inaccessible
I've been working on updating the Hy package in Debian and in running the tests, I've noticed that the `test_bin` tests appear to expect to be able to do something with `~/.hy-history` (not sure if it's trying to read or write) but I had to set `HOME` to a real directory after which they passed.  Looking at the tests, I imagine it's happening because they're interacting with the REPL via stdin so it's trying to load and/or use the history file?

--- END ISSUE ---

Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
--- BEGIN FILES ---
Path: `hy/completer.py`
Content:
```
1 # Copyright 2019 the authors.
2 # This file is part of Hy, which is free software licensed under the Expat
3 # license. See the LICENSE.
4 
5 import contextlib
6 import os
7 import re
8 import sys
9 import builtins
10 
11 import hy.macros
12 import hy.compiler
13 
14 
15 docomplete = True
16 
17 try:
18     import readline
19 except ImportError:
20     try:
21         import pyreadline.rlmain
22         import pyreadline.unicode_helper  # NOQA
23         import readline
24     except ImportError:
25         docomplete = False
26 
27 if docomplete:
28     if sys.platform == 'darwin' and 'libedit' in readline.__doc__:
29         readline_bind = "bind ^I rl_complete"
30     else:
31         readline_bind = "tab: complete"
32 
33 
34 class Completer(object):
35 
36     def __init__(self, namespace={}):
37         if not isinstance(namespace, dict):
38             raise TypeError('namespace must be a dictionary')
39         self.namespace = namespace
40         self.path = [hy.compiler._special_form_compilers,
41                      builtins.__dict__,
42                      namespace]
43 
44         self.tag_path = []
45 
46         namespace.setdefault('__macros__', {})
47         namespace.setdefault('__tags__', {})
48 
49         self.path.append(namespace['__macros__'])
50         self.tag_path.append(namespace['__tags__'])
51 
52     def attr_matches(self, text):
53         # Borrowed from IPython's completer
54         m = re.match(r"(\S+(\.[\w-]+)*)\.([\w-]*)$", text)
55 
56         if m:
57             expr, attr = m.group(1, 3)
58             attr = attr.replace("-", "_")
59             expr = expr.replace("-", "_")
60         else:
61             return []
62 
63         try:
64             obj = eval(expr, self.namespace)
65             words = dir(obj)
66         except Exception:
67             return []
68 
69         n = len(attr)
70         matches = []
71         for w in words:
72             if w[:n] == attr:
73                 matches.append("{}.{}".format(
74                     expr.replace("_", "-"), w.replace("_", "-")))
75         return matches
76 
77     def global_matches(self, text):
78         matches = []
79         for p in self.path:
80             for k in p.keys():
81                 if isinstance(k, str):
82                     k = k.replace("_", "-")
83                     if k.startswith(text):
84                         matches.append(k)
85         return matches
86 
87     def tag_matches(self, text):
88         text = text[1:]
89         matches = []
90         for p in self.tag_path:
91             for k in p.keys():
92                 if isinstance(k, str):
93                     if k.startswith(text):
94                         matches.append("#{}".format(k))
95         return matches
96 
97     def complete(self, text, state):
98         if text.startswith("#"):
99             matches = self.tag_matches(text)
100         elif "." in text:
101             matches = self.attr_matches(text)
102         else:
103             matches = self.global_matches(text)
104         try:
105             return matches[state]
106         except IndexError:
107             return None
108 
109 
110 @contextlib.contextmanager
111 def completion(completer=None):
112     delims = "()[]{} "
113     if not completer:
114         completer = Completer()
115 
116     if docomplete:
117         readline.set_completer(completer.complete)
118         readline.set_completer_delims(delims)
119 
120         history = os.path.expanduser("~/.hy-history")
121         readline.parse_and_bind("set blink-matching-paren on")
122 
123         try:
124             readline.read_history_file(history)
125         except IOError:
126             open(history, 'a').close()
127 
128         readline.parse_and_bind(readline_bind)
129 
130     try:
131         yield
132     finally:
133         if docomplete:
134             readline.write_history_file(history)
135
```
--- 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/hy/completer.py b/hy/completer.py
--- a/hy/completer.py
+++ b/hy/completer.py
@@ -123,7 +123,7 @@
         try:
             readline.read_history_file(history)
         except IOError:
-            open(history, 'a').close()
+            pass
 
         readline.parse_and_bind(readline_bind)
 
@@ -131,4 +131,7 @@
         yield
     finally:
         if docomplete:
-            readline.write_history_file(history)
+            try:
+                readline.write_history_file(history)
+            except IOError:
+                pass

{"golden_diff": "diff --git a/hy/completer.py b/hy/completer.py\n--- a/hy/completer.py\n+++ b/hy/completer.py\n@@ -123,7 +123,7 @@\n         try:\n             readline.read_history_file(history)\n         except IOError:\n-            open(history, 'a').close()\n+            pass\n \n         readline.parse_and_bind(readline_bind)\n \n@@ -131,4 +131,7 @@\n         yield\n     finally:\n         if docomplete:\n-            readline.write_history_file(history)\n+            try:\n+                readline.write_history_file(history)\n+            except IOError:\n+                pass\n", "issue": "REPL crashes when ~/.hy-history is inaccessible\nI've been working on updating the Hy package in Debian and in running the tests, I've noticed that the `test_bin` tests appear to expect to be able to do something with `~/.hy-history` (not sure if it's trying to read or write) but I had to set `HOME` to a real directory after which they passed.  Looking at the tests, I imagine it's happening because they're interacting with the REPL via stdin so it's trying to load and/or use the history file?\n", "before_files": [{"content": "# Copyright 2019 the authors.\n# This file is part of Hy, which is free software licensed under the Expat\n# license. See the LICENSE.\n\nimport contextlib\nimport os\nimport re\nimport sys\nimport builtins\n\nimport hy.macros\nimport hy.compiler\n\n\ndocomplete = True\n\ntry:\n    import readline\nexcept ImportError:\n    try:\n        import pyreadline.rlmain\n        import pyreadline.unicode_helper  # NOQA\n        import readline\n    except ImportError:\n        docomplete = False\n\nif docomplete:\n    if sys.platform == 'darwin' and 'libedit' in readline.__doc__:\n        readline_bind = \"bind ^I rl_complete\"\n    else:\n        readline_bind = \"tab: complete\"\n\n\nclass Completer(object):\n\n    def __init__(self, namespace={}):\n        if not isinstance(namespace, dict):\n            raise TypeError('namespace must be a dictionary')\n        self.namespace = namespace\n        self.path = [hy.compiler._special_form_compilers,\n                     builtins.__dict__,\n                     namespace]\n\n        self.tag_path = []\n\n        namespace.setdefault('__macros__', {})\n        namespace.setdefault('__tags__', {})\n\n        self.path.append(namespace['__macros__'])\n        self.tag_path.append(namespace['__tags__'])\n\n    def attr_matches(self, text):\n        # Borrowed from IPython's completer\n        m = re.match(r\"(\\S+(\\.[\\w-]+)*)\\.([\\w-]*)$\", text)\n\n        if m:\n            expr, attr = m.group(1, 3)\n            attr = attr.replace(\"-\", \"_\")\n            expr = expr.replace(\"-\", \"_\")\n        else:\n            return []\n\n        try:\n            obj = eval(expr, self.namespace)\n            words = dir(obj)\n        except Exception:\n            return []\n\n        n = len(attr)\n        matches = []\n        for w in words:\n            if w[:n] == attr:\n                matches.append(\"{}.{}\".format(\n                    expr.replace(\"_\", \"-\"), w.replace(\"_\", \"-\")))\n        return matches\n\n    def global_matches(self, text):\n        matches = []\n        for p in self.path:\n            for k in p.keys():\n                if isinstance(k, str):\n                    k = k.replace(\"_\", \"-\")\n                    if k.startswith(text):\n                        matches.append(k)\n        return matches\n\n    def tag_matches(self, text):\n        text = text[1:]\n        matches = []\n        for p in self.tag_path:\n            for k in p.keys():\n                if isinstance(k, str):\n                    if k.startswith(text):\n                        matches.append(\"#{}\".format(k))\n        return matches\n\n    def complete(self, text, state):\n        if text.startswith(\"#\"):\n            matches = self.tag_matches(text)\n        elif \".\" in text:\n            matches = self.attr_matches(text)\n        else:\n            matches = self.global_matches(text)\n        try:\n            return matches[state]\n        except IndexError:\n            return None\n\n\n@contextlib.contextmanager\ndef completion(completer=None):\n    delims = \"()[]{} \"\n    if not completer:\n        completer = Completer()\n\n    if docomplete:\n        readline.set_completer(completer.complete)\n        readline.set_completer_delims(delims)\n\n        history = os.path.expanduser(\"~/.hy-history\")\n        readline.parse_and_bind(\"set blink-matching-paren on\")\n\n        try:\n            readline.read_history_file(history)\n        except IOError:\n            open(history, 'a').close()\n\n        readline.parse_and_bind(readline_bind)\n\n    try:\n        yield\n    finally:\n        if docomplete:\n            readline.write_history_file(history)\n", "path": "hy/completer.py"}], "after_files": [{"content": "# Copyright 2019 the authors.\n# This file is part of Hy, which is free software licensed under the Expat\n# license. See the LICENSE.\n\nimport contextlib\nimport os\nimport re\nimport sys\nimport builtins\n\nimport hy.macros\nimport hy.compiler\n\n\ndocomplete = True\n\ntry:\n    import readline\nexcept ImportError:\n    try:\n        import pyreadline.rlmain\n        import pyreadline.unicode_helper  # NOQA\n        import readline\n    except ImportError:\n        docomplete = False\n\nif docomplete:\n    if sys.platform == 'darwin' and 'libedit' in readline.__doc__:\n        readline_bind = \"bind ^I rl_complete\"\n    else:\n        readline_bind = \"tab: complete\"\n\n\nclass Completer(object):\n\n    def __init__(self, namespace={}):\n        if not isinstance(namespace, dict):\n            raise TypeError('namespace must be a dictionary')\n        self.namespace = namespace\n        self.path = [hy.compiler._special_form_compilers,\n                     builtins.__dict__,\n                     namespace]\n\n        self.tag_path = []\n\n        namespace.setdefault('__macros__', {})\n        namespace.setdefault('__tags__', {})\n\n        self.path.append(namespace['__macros__'])\n        self.tag_path.append(namespace['__tags__'])\n\n    def attr_matches(self, text):\n        # Borrowed from IPython's completer\n        m = re.match(r\"(\\S+(\\.[\\w-]+)*)\\.([\\w-]*)$\", text)\n\n        if m:\n            expr, attr = m.group(1, 3)\n            attr = attr.replace(\"-\", \"_\")\n            expr = expr.replace(\"-\", \"_\")\n        else:\n            return []\n\n        try:\n            obj = eval(expr, self.namespace)\n            words = dir(obj)\n        except Exception:\n            return []\n\n        n = len(attr)\n        matches = []\n        for w in words:\n            if w[:n] == attr:\n                matches.append(\"{}.{}\".format(\n                    expr.replace(\"_\", \"-\"), w.replace(\"_\", \"-\")))\n        return matches\n\n    def global_matches(self, text):\n        matches = []\n        for p in self.path:\n            for k in p.keys():\n                if isinstance(k, str):\n                    k = k.replace(\"_\", \"-\")\n                    if k.startswith(text):\n                        matches.append(k)\n        return matches\n\n    def tag_matches(self, text):\n        text = text[1:]\n        matches = []\n        for p in self.tag_path:\n            for k in p.keys():\n                if isinstance(k, str):\n                    if k.startswith(text):\n                        matches.append(\"#{}\".format(k))\n        return matches\n\n    def complete(self, text, state):\n        if text.startswith(\"#\"):\n            matches = self.tag_matches(text)\n        elif \".\" in text:\n            matches = self.attr_matches(text)\n        else:\n            matches = self.global_matches(text)\n        try:\n            return matches[state]\n        except IndexError:\n            return None\n\n\n@contextlib.contextmanager\ndef completion(completer=None):\n    delims = \"()[]{} \"\n    if not completer:\n        completer = Completer()\n\n    if docomplete:\n        readline.set_completer(completer.complete)\n        readline.set_completer_delims(delims)\n\n        history = os.path.expanduser(\"~/.hy-history\")\n        readline.parse_and_bind(\"set blink-matching-paren on\")\n\n        try:\n            readline.read_history_file(history)\n        except IOError:\n            pass\n\n        readline.parse_and_bind(readline_bind)\n\n    try:\n        yield\n    finally:\n        if docomplete:\n            try:\n                readline.write_history_file(history)\n            except IOError:\n                pass\n", "path": "hy/completer.py"}]}