{
    "file_diffs": [
        {
            "old_file_content": "import filecmp\nimport warnings\n\nimport pytest\n\nfrom PIL import Image, ImImagePlugin\n\nfrom .helper import assert_image_equal_tofile, hopper, is_pypy\n\n# sample im\nTEST_IM = \"Tests/images/hopper.im\"\n\n\ndef test_sanity():\n    with Image.open(TEST_IM) as im:\n        im.load()\n        assert im.mode == \"RGB\"\n        assert im.size == (128, 128)\n        assert im.format == \"IM\"\n\n\ndef test_name_limit(tmp_path):\n    out = str(tmp_path / (\"name_limit_test\" * 7 + \".im\"))\n    with Image.open(TEST_IM) as im:\n        im.save(out)\n    assert filecmp.cmp(out, \"Tests/images/hopper_long_name.im\")\n\n\n@pytest.mark.skipif(is_pypy(), reason=\"Requires CPython\")\ndef test_unclosed_file():\n    def open():\n        im = Image.open(TEST_IM)\n        im.load()\n\n    pytest.warns(ResourceWarning, open)\n\n\ndef test_closed_file():\n    with warnings.catch_warnings():\n        im = Image.open(TEST_IM)\n        im.load()\n        im.close()\n\n\ndef test_context_manager():\n    with warnings.catch_warnings():\n        with Image.open(TEST_IM) as im:\n            im.load()\n\n\ndef test_tell():\n    # Arrange\n    with Image.open(TEST_IM) as im:\n\n        # Act\n        frame = im.tell()\n\n    # Assert\n    assert frame == 0\n\n\ndef test_n_frames():\n    with Image.open(TEST_IM) as im:\n        assert im.n_frames == 1\n        assert not im.is_animated\n\n\ndef test_eoferror():\n    with Image.open(TEST_IM) as im:\n        n_frames = im.n_frames\n\n        # Test seeking past the last frame\n        with pytest.raises(EOFError):\n            im.seek(n_frames)\n        assert im.tell() < n_frames\n\n        # Test that seeking to the last frame does not raise an error\n        im.seek(n_frames - 1)\n\n\n@pytest.mark.parametrize(\"mode\", (\"RGB\", \"P\", \"PA\"))\ndef test_roundtrip(mode, tmp_path):\n    out = str(tmp_path / \"temp.im\")\n    im = hopper(mode)\n    im.save(out)\n    assert_image_equal_tofile(im, out)\n\n\ndef test_save_unsupported_mode(tmp_path):\n    out = str(tmp_path / \"temp.im\")\n    im = hopper(\"HSV\")\n    with pytest.raises(ValueError):\n        im.save(out)\n\n\ndef test_invalid_file():\n    invalid_file = \"Tests/images/flower.jpg\"\n\n    with pytest.raises(SyntaxError):\n        ImImagePlugin.ImImageFile(invalid_file)\n\n\ndef test_number():\n    assert ImImagePlugin.number(\"1.2\") == 1.2\n",
            "new_file_content": "import filecmp\nimport warnings\n\nimport pytest\n\nfrom PIL import Image, ImImagePlugin\n\nfrom .helper import assert_image_equal_tofile, hopper, is_pypy\n\n# sample im\nTEST_IM = \"Tests/images/hopper.im\"\n\n\ndef test_sanity():\n    with Image.open(TEST_IM) as im:\n        im.load()\n        assert im.mode == \"RGB\"\n        assert im.size == (128, 128)\n        assert im.format == \"IM\"\n\n\ndef test_name_limit(tmp_path):\n    out = str(tmp_path / (\"name_limit_test\" * 7 + \".im\"))\n    with Image.open(TEST_IM) as im:\n        im.save(out)\n    assert filecmp.cmp(out, \"Tests/images/hopper_long_name.im\")\n\n\n@pytest.mark.skipif(is_pypy(), reason=\"Requires CPython\")\ndef test_unclosed_file():\n    def open():\n        im = Image.open(TEST_IM)\n        im.load()\n\n    pytest.warns(ResourceWarning, open)\n\n\ndef test_closed_file():\n    with warnings.catch_warnings():\n        im = Image.open(TEST_IM)\n        im.load()\n        im.close()\n\n\ndef test_context_manager():\n    with warnings.catch_warnings():\n        with Image.open(TEST_IM) as im:\n            im.load()\n\n\ndef test_tell():\n    # Arrange\n    with Image.open(TEST_IM) as im:\n\n        # Act\n        frame = im.tell()\n\n    # Assert\n    assert frame == 0\n\n\ndef test_n_frames():\n    with Image.open(TEST_IM) as im:\n        assert im.n_frames == 1\n        assert not im.is_animated\n\n\ndef test_eoferror():\n    with Image.open(TEST_IM) as im:\n        n_frames = im.n_frames\n\n        # Test seeking past the last frame\n        with pytest.raises(EOFError):\n            im.seek(n_frames)\n        assert im.tell() < n_frames\n\n        # Test that seeking to the last frame does not raise an error\n        im.seek(n_frames - 1)\n\n\n@pytest.mark.parametrize(\"mode\", (\"RGB\", \"P\", \"PA\"))\ndef test_roundtrip(mode, tmp_path):\n    out = str(tmp_path / \"temp.im\")\n    im = hopper(mode)\n    im.save(out)\n    assert_image_equal_tofile(im, out)\n\n\ndef test_small_palette(tmp_path):\n    im = Image.new(\"P\", (1, 1))\n    colors = [0, 1, 2]\n    im.putpalette(colors)\n\n    out = str(tmp_path / \"temp.im\")\n    im.save(out)\n\n    with Image.open(out) as reloaded:\n        assert reloaded.getpalette() == colors + [0] * 765\n\n\ndef test_save_unsupported_mode(tmp_path):\n    out = str(tmp_path / \"temp.im\")\n    im = hopper(\"HSV\")\n    with pytest.raises(ValueError):\n        im.save(out)\n\n\ndef test_invalid_file():\n    invalid_file = \"Tests/images/flower.jpg\"\n\n    with pytest.raises(SyntaxError):\n        ImImagePlugin.ImImageFile(invalid_file)\n\n\ndef test_number():\n    assert ImImagePlugin.number(\"1.2\") == 1.2\n",
            "header": {
                "file": {
                    "path": "Tests/test_file_im.py"
                },
                "misc_line": null
            },
            "index_line": {
                "old_commit_hash": "e458a197c",
                "new_commit_hash": "5cf93713b",
                "mode": "100644"
            },
            "is_binary_file": false,
            "binary_line": null,
            "minus_file": {
                "path": "a/Tests/test_file_im.py"
            },
            "plus_file": {
                "path": "b/Tests/test_file_im.py"
            },
            "hunks": [
                {
                    "descriptor": {
                        "old_range": {
                            "start": 86,
                            "length": 6
                        },
                        "new_range": {
                            "start": 86,
                            "length": 18
                        },
                        "section": "def test_roundtrip(mode, tmp_path):"
                    },
                    "line_group": {
                        "all_lines": [
                            {
                                "content": "    assert_image_equal_tofile(im, out)",
                                "type": "context"
                            },
                            {
                                "content": "",
                                "type": "context"
                            },
                            {
                                "content": "",
                                "type": "context"
                            },
                            {
                                "content": "def test_small_palette(tmp_path):",
                                "type": "added"
                            },
                            {
                                "content": "    im = Image.new(\"P\", (1, 1))",
                                "type": "added"
                            },
                            {
                                "content": "    colors = [0, 1, 2]",
                                "type": "added"
                            },
                            {
                                "content": "    im.putpalette(colors)",
                                "type": "added"
                            },
                            {
                                "content": "",
                                "type": "added"
                            },
                            {
                                "content": "    out = str(tmp_path / \"temp.im\")",
                                "type": "added"
                            },
                            {
                                "content": "    im.save(out)",
                                "type": "added"
                            },
                            {
                                "content": "",
                                "type": "added"
                            },
                            {
                                "content": "    with Image.open(out) as reloaded:",
                                "type": "added"
                            },
                            {
                                "content": "        assert reloaded.getpalette() == colors + [0] * 765",
                                "type": "added"
                            },
                            {
                                "content": "",
                                "type": "added"
                            },
                            {
                                "content": "",
                                "type": "added"
                            },
                            {
                                "content": "def test_save_unsupported_mode(tmp_path):",
                                "type": "context"
                            },
                            {
                                "content": "    out = str(tmp_path / \"temp.im\")",
                                "type": "context"
                            },
                            {
                                "content": "    im = hopper(\"HSV\")",
                                "type": "context"
                            }
                        ]
                    },
                    "modified_entities": [],
                    "added_entities": [
                        {
                            "file_name": "Tests/test_file_im.py",
                            "type": "function",
                            "name": "test_small_palette",
                            "content": "def test_small_palette(tmp_path):\n    im = Image.new(\"P\", (1, 1))\n    colors = [0, 1, 2]\n    im.putpalette(colors)\n\n    out = str(tmp_path / \"temp.im\")\n    im.save(out)\n\n    with Image.open(out) as reloaded:\n        assert reloaded.getpalette() == colors + [0] * 765",
                            "ast_type_str": "FunctionDef",
                            "start_lineno": 89,
                            "end_lineno": 98,
                            "parent": null
                        }
                    ],
                    "deleted_entities": []
                }
            ]
        },
        {
            "old_file_content": "#\n# The Python Imaging Library.\n# $Id$\n#\n# IFUNC IM file handling for PIL\n#\n# history:\n# 1995-09-01 fl   Created.\n# 1997-01-03 fl   Save palette images\n# 1997-01-08 fl   Added sequence support\n# 1997-01-23 fl   Added P and RGB save support\n# 1997-05-31 fl   Read floating point images\n# 1997-06-22 fl   Save floating point images\n# 1997-08-27 fl   Read and save 1-bit images\n# 1998-06-25 fl   Added support for RGB+LUT images\n# 1998-07-02 fl   Added support for YCC images\n# 1998-07-15 fl   Renamed offset attribute to avoid name clash\n# 1998-12-29 fl   Added I;16 support\n# 2001-02-17 fl   Use 're' instead of 'regex' (Python 2.1) (0.7)\n# 2003-09-26 fl   Added LA/PA support\n#\n# Copyright (c) 1997-2003 by Secret Labs AB.\n# Copyright (c) 1995-2001 by Fredrik Lundh.\n#\n# See the README file for information on usage and redistribution.\n#\n\n\nimport os\nimport re\n\nfrom . import Image, ImageFile, ImagePalette\n\n# --------------------------------------------------------------------\n# Standard tags\n\nCOMMENT = \"Comment\"\nDATE = \"Date\"\nEQUIPMENT = \"Digitalization equipment\"\nFRAMES = \"File size (no of images)\"\nLUT = \"Lut\"\nNAME = \"Name\"\nSCALE = \"Scale (x,y)\"\nSIZE = \"Image size (x*y)\"\nMODE = \"Image type\"\n\nTAGS = {\n    COMMENT: 0,\n    DATE: 0,\n    EQUIPMENT: 0,\n    FRAMES: 0,\n    LUT: 0,\n    NAME: 0,\n    SCALE: 0,\n    SIZE: 0,\n    MODE: 0,\n}\n\nOPEN = {\n    # ifunc93/p3cfunc formats\n    \"0 1 image\": (\"1\", \"1\"),\n    \"L 1 image\": (\"1\", \"1\"),\n    \"Greyscale image\": (\"L\", \"L\"),\n    \"Grayscale image\": (\"L\", \"L\"),\n    \"RGB image\": (\"RGB\", \"RGB;L\"),\n    \"RLB image\": (\"RGB\", \"RLB\"),\n    \"RYB image\": (\"RGB\", \"RLB\"),\n    \"B1 image\": (\"1\", \"1\"),\n    \"B2 image\": (\"P\", \"P;2\"),\n    \"B4 image\": (\"P\", \"P;4\"),\n    \"X 24 image\": (\"RGB\", \"RGB\"),\n    \"L 32 S image\": (\"I\", \"I;32\"),\n    \"L 32 F image\": (\"F\", \"F;32\"),\n    # old p3cfunc formats\n    \"RGB3 image\": (\"RGB\", \"RGB;T\"),\n    \"RYB3 image\": (\"RGB\", \"RYB;T\"),\n    # extensions\n    \"LA image\": (\"LA\", \"LA;L\"),\n    \"PA image\": (\"LA\", \"PA;L\"),\n    \"RGBA image\": (\"RGBA\", \"RGBA;L\"),\n    \"RGBX image\": (\"RGBX\", \"RGBX;L\"),\n    \"CMYK image\": (\"CMYK\", \"CMYK;L\"),\n    \"YCC image\": (\"YCbCr\", \"YCbCr;L\"),\n}\n\n# ifunc95 extensions\nfor i in [\"8\", \"8S\", \"16\", \"16S\", \"32\", \"32F\"]:\n    OPEN[f\"L {i} image\"] = (\"F\", f\"F;{i}\")\n    OPEN[f\"L*{i} image\"] = (\"F\", f\"F;{i}\")\nfor i in [\"16\", \"16L\", \"16B\"]:\n    OPEN[f\"L {i} image\"] = (f\"I;{i}\", f\"I;{i}\")\n    OPEN[f\"L*{i} image\"] = (f\"I;{i}\", f\"I;{i}\")\nfor i in [\"32S\"]:\n    OPEN[f\"L {i} image\"] = (\"I\", f\"I;{i}\")\n    OPEN[f\"L*{i} image\"] = (\"I\", f\"I;{i}\")\nfor i in range(2, 33):\n    OPEN[f\"L*{i} image\"] = (\"F\", f\"F;{i}\")\n\n\n# --------------------------------------------------------------------\n# Read IM directory\n\nsplit = re.compile(rb\"^([A-Za-z][^:]*):[ \\t]*(.*)[ \\t]*$\")\n\n\ndef number(s):\n    try:\n        return int(s)\n    except ValueError:\n        return float(s)\n\n\n##\n# Image plugin for the IFUNC IM file format.\n\n\nclass ImImageFile(ImageFile.ImageFile):\n\n    format = \"IM\"\n    format_description = \"IFUNC Image Memory\"\n    _close_exclusive_fp_after_loading = False\n\n    def _open(self):\n\n        # Quick rejection: if there's not an LF among the first\n        # 100 bytes, this is (probably) not a text header.\n\n        if b\"\\n\" not in self.fp.read(100):\n            raise SyntaxError(\"not an IM file\")\n        self.fp.seek(0)\n\n        n = 0\n\n        # Default values\n        self.info[MODE] = \"L\"\n        self.info[SIZE] = (512, 512)\n        self.info[FRAMES] = 1\n\n        self.rawmode = \"L\"\n\n        while True:\n\n            s = self.fp.read(1)\n\n            # Some versions of IFUNC uses \\n\\r instead of \\r\\n...\n            if s == b\"\\r\":\n                continue\n\n            if not s or s == b\"\\0\" or s == b\"\\x1A\":\n                break\n\n            # FIXME: this may read whole file if not a text file\n            s = s + self.fp.readline()\n\n            if len(s) > 100:\n                raise SyntaxError(\"not an IM file\")\n\n            if s[-2:] == b\"\\r\\n\":\n                s = s[:-2]\n            elif s[-1:] == b\"\\n\":\n                s = s[:-1]\n\n            try:\n                m = split.match(s)\n            except re.error as e:\n                raise SyntaxError(\"not an IM file\") from e\n\n            if m:\n\n                k, v = m.group(1, 2)\n\n                # Don't know if this is the correct encoding,\n                # but a decent guess (I guess)\n                k = k.decode(\"latin-1\", \"replace\")\n                v = v.decode(\"latin-1\", \"replace\")\n\n                # Convert value as appropriate\n                if k in [FRAMES, SCALE, SIZE]:\n                    v = v.replace(\"*\", \",\")\n                    v = tuple(map(number, v.split(\",\")))\n                    if len(v) == 1:\n                        v = v[0]\n                elif k == MODE and v in OPEN:\n                    v, self.rawmode = OPEN[v]\n\n                # Add to dictionary. Note that COMMENT tags are\n                # combined into a list of strings.\n                if k == COMMENT:\n                    if k in self.info:\n                        self.info[k].append(v)\n                    else:\n                        self.info[k] = [v]\n                else:\n                    self.info[k] = v\n\n                if k in TAGS:\n                    n += 1\n\n            else:\n\n                raise SyntaxError(\n                    \"Syntax error in IM header: \" + s.decode(\"ascii\", \"replace\")\n                )\n\n        if not n:\n            raise SyntaxError(\"Not an IM file\")\n\n        # Basic attributes\n        self._size = self.info[SIZE]\n        self.mode = self.info[MODE]\n\n        # Skip forward to start of image data\n        while s and s[:1] != b\"\\x1A\":\n            s = self.fp.read(1)\n        if not s:\n            raise SyntaxError(\"File truncated\")\n\n        if LUT in self.info:\n            # convert lookup table to palette or lut attribute\n            palette = self.fp.read(768)\n            greyscale = 1  # greyscale palette\n            linear = 1  # linear greyscale palette\n            for i in range(256):\n                if palette[i] == palette[i + 256] == palette[i + 512]:\n                    if palette[i] != i:\n                        linear = 0\n                else:\n                    greyscale = 0\n            if self.mode in [\"L\", \"LA\", \"P\", \"PA\"]:\n                if greyscale:\n                    if not linear:\n                        self.lut = list(palette[:256])\n                else:\n                    if self.mode in [\"L\", \"P\"]:\n                        self.mode = self.rawmode = \"P\"\n                    elif self.mode in [\"LA\", \"PA\"]:\n                        self.mode = \"PA\"\n                        self.rawmode = \"PA;L\"\n                    self.palette = ImagePalette.raw(\"RGB;L\", palette)\n            elif self.mode == \"RGB\":\n                if not greyscale or not linear:\n                    self.lut = list(palette)\n\n        self.frame = 0\n\n        self.__offset = offs = self.fp.tell()\n\n        self._fp = self.fp  # FIXME: hack\n\n        if self.rawmode[:2] == \"F;\":\n\n            # ifunc95 formats\n            try:\n                # use bit decoder (if necessary)\n                bits = int(self.rawmode[2:])\n                if bits not in [8, 16, 32]:\n                    self.tile = [(\"bit\", (0, 0) + self.size, offs, (bits, 8, 3, 0, -1))]\n                    return\n            except ValueError:\n                pass\n\n        if self.rawmode in [\"RGB;T\", \"RYB;T\"]:\n            # Old LabEye/3PC files.  Would be very surprised if anyone\n            # ever stumbled upon such a file ;-)\n            size = self.size[0] * self.size[1]\n            self.tile = [\n                (\"raw\", (0, 0) + self.size, offs, (\"G\", 0, -1)),\n                (\"raw\", (0, 0) + self.size, offs + size, (\"R\", 0, -1)),\n                (\"raw\", (0, 0) + self.size, offs + 2 * size, (\"B\", 0, -1)),\n            ]\n        else:\n            # LabEye/IFUNC files\n            self.tile = [(\"raw\", (0, 0) + self.size, offs, (self.rawmode, 0, -1))]\n\n    @property\n    def n_frames(self):\n        return self.info[FRAMES]\n\n    @property\n    def is_animated(self):\n        return self.info[FRAMES] > 1\n\n    def seek(self, frame):\n        if not self._seek_check(frame):\n            return\n\n        self.frame = frame\n\n        if self.mode == \"1\":\n            bits = 1\n        else:\n            bits = 8 * len(self.mode)\n\n        size = ((self.size[0] * bits + 7) // 8) * self.size[1]\n        offs = self.__offset + frame * size\n\n        self.fp = self._fp\n\n        self.tile = [(\"raw\", (0, 0) + self.size, offs, (self.rawmode, 0, -1))]\n\n    def tell(self):\n        return self.frame\n\n\n#\n# --------------------------------------------------------------------\n# Save IM files\n\n\nSAVE = {\n    # mode: (im type, raw mode)\n    \"1\": (\"0 1\", \"1\"),\n    \"L\": (\"Greyscale\", \"L\"),\n    \"LA\": (\"LA\", \"LA;L\"),\n    \"P\": (\"Greyscale\", \"P\"),\n    \"PA\": (\"LA\", \"PA;L\"),\n    \"I\": (\"L 32S\", \"I;32S\"),\n    \"I;16\": (\"L 16\", \"I;16\"),\n    \"I;16L\": (\"L 16L\", \"I;16L\"),\n    \"I;16B\": (\"L 16B\", \"I;16B\"),\n    \"F\": (\"L 32F\", \"F;32F\"),\n    \"RGB\": (\"RGB\", \"RGB;L\"),\n    \"RGBA\": (\"RGBA\", \"RGBA;L\"),\n    \"RGBX\": (\"RGBX\", \"RGBX;L\"),\n    \"CMYK\": (\"CMYK\", \"CMYK;L\"),\n    \"YCbCr\": (\"YCC\", \"YCbCr;L\"),\n}\n\n\ndef _save(im, fp, filename):\n\n    try:\n        image_type, rawmode = SAVE[im.mode]\n    except KeyError as e:\n        raise ValueError(f\"Cannot save {im.mode} images as IM\") from e\n\n    frames = im.encoderinfo.get(\"frames\", 1)\n\n    fp.write(f\"Image type: {image_type} image\\r\\n\".encode(\"ascii\"))\n    if filename:\n        # Each line must be 100 characters or less,\n        # or: SyntaxError(\"not an IM file\")\n        # 8 characters are used for \"Name: \" and \"\\r\\n\"\n        # Keep just the filename, ditch the potentially overlong path\n        name, ext = os.path.splitext(os.path.basename(filename))\n        name = \"\".join([name[: 92 - len(ext)], ext])\n\n        fp.write(f\"Name: {name}\\r\\n\".encode(\"ascii\"))\n    fp.write((\"Image size (x*y): %d*%d\\r\\n\" % im.size).encode(\"ascii\"))\n    fp.write(f\"File size (no of images): {frames}\\r\\n\".encode(\"ascii\"))\n    if im.mode in [\"P\", \"PA\"]:\n        fp.write(b\"Lut: 1\\r\\n\")\n    fp.write(b\"\\000\" * (511 - fp.tell()) + b\"\\032\")\n    if im.mode in [\"P\", \"PA\"]:\n        fp.write(im.im.getpalette(\"RGB\", \"RGB;L\"))  # 768 bytes\n    ImageFile._save(im, fp, [(\"raw\", (0, 0) + im.size, 0, (rawmode, 0, -1))])\n\n\n#\n# --------------------------------------------------------------------\n# Registry\n\n\nImage.register_open(ImImageFile.format, ImImageFile)\nImage.register_save(ImImageFile.format, _save)\n\nImage.register_extension(ImImageFile.format, \".im\")\n",
            "new_file_content": "#\n# The Python Imaging Library.\n# $Id$\n#\n# IFUNC IM file handling for PIL\n#\n# history:\n# 1995-09-01 fl   Created.\n# 1997-01-03 fl   Save palette images\n# 1997-01-08 fl   Added sequence support\n# 1997-01-23 fl   Added P and RGB save support\n# 1997-05-31 fl   Read floating point images\n# 1997-06-22 fl   Save floating point images\n# 1997-08-27 fl   Read and save 1-bit images\n# 1998-06-25 fl   Added support for RGB+LUT images\n# 1998-07-02 fl   Added support for YCC images\n# 1998-07-15 fl   Renamed offset attribute to avoid name clash\n# 1998-12-29 fl   Added I;16 support\n# 2001-02-17 fl   Use 're' instead of 'regex' (Python 2.1) (0.7)\n# 2003-09-26 fl   Added LA/PA support\n#\n# Copyright (c) 1997-2003 by Secret Labs AB.\n# Copyright (c) 1995-2001 by Fredrik Lundh.\n#\n# See the README file for information on usage and redistribution.\n#\n\n\nimport os\nimport re\n\nfrom . import Image, ImageFile, ImagePalette\n\n# --------------------------------------------------------------------\n# Standard tags\n\nCOMMENT = \"Comment\"\nDATE = \"Date\"\nEQUIPMENT = \"Digitalization equipment\"\nFRAMES = \"File size (no of images)\"\nLUT = \"Lut\"\nNAME = \"Name\"\nSCALE = \"Scale (x,y)\"\nSIZE = \"Image size (x*y)\"\nMODE = \"Image type\"\n\nTAGS = {\n    COMMENT: 0,\n    DATE: 0,\n    EQUIPMENT: 0,\n    FRAMES: 0,\n    LUT: 0,\n    NAME: 0,\n    SCALE: 0,\n    SIZE: 0,\n    MODE: 0,\n}\n\nOPEN = {\n    # ifunc93/p3cfunc formats\n    \"0 1 image\": (\"1\", \"1\"),\n    \"L 1 image\": (\"1\", \"1\"),\n    \"Greyscale image\": (\"L\", \"L\"),\n    \"Grayscale image\": (\"L\", \"L\"),\n    \"RGB image\": (\"RGB\", \"RGB;L\"),\n    \"RLB image\": (\"RGB\", \"RLB\"),\n    \"RYB image\": (\"RGB\", \"RLB\"),\n    \"B1 image\": (\"1\", \"1\"),\n    \"B2 image\": (\"P\", \"P;2\"),\n    \"B4 image\": (\"P\", \"P;4\"),\n    \"X 24 image\": (\"RGB\", \"RGB\"),\n    \"L 32 S image\": (\"I\", \"I;32\"),\n    \"L 32 F image\": (\"F\", \"F;32\"),\n    # old p3cfunc formats\n    \"RGB3 image\": (\"RGB\", \"RGB;T\"),\n    \"RYB3 image\": (\"RGB\", \"RYB;T\"),\n    # extensions\n    \"LA image\": (\"LA\", \"LA;L\"),\n    \"PA image\": (\"LA\", \"PA;L\"),\n    \"RGBA image\": (\"RGBA\", \"RGBA;L\"),\n    \"RGBX image\": (\"RGBX\", \"RGBX;L\"),\n    \"CMYK image\": (\"CMYK\", \"CMYK;L\"),\n    \"YCC image\": (\"YCbCr\", \"YCbCr;L\"),\n}\n\n# ifunc95 extensions\nfor i in [\"8\", \"8S\", \"16\", \"16S\", \"32\", \"32F\"]:\n    OPEN[f\"L {i} image\"] = (\"F\", f\"F;{i}\")\n    OPEN[f\"L*{i} image\"] = (\"F\", f\"F;{i}\")\nfor i in [\"16\", \"16L\", \"16B\"]:\n    OPEN[f\"L {i} image\"] = (f\"I;{i}\", f\"I;{i}\")\n    OPEN[f\"L*{i} image\"] = (f\"I;{i}\", f\"I;{i}\")\nfor i in [\"32S\"]:\n    OPEN[f\"L {i} image\"] = (\"I\", f\"I;{i}\")\n    OPEN[f\"L*{i} image\"] = (\"I\", f\"I;{i}\")\nfor i in range(2, 33):\n    OPEN[f\"L*{i} image\"] = (\"F\", f\"F;{i}\")\n\n\n# --------------------------------------------------------------------\n# Read IM directory\n\nsplit = re.compile(rb\"^([A-Za-z][^:]*):[ \\t]*(.*)[ \\t]*$\")\n\n\ndef number(s):\n    try:\n        return int(s)\n    except ValueError:\n        return float(s)\n\n\n##\n# Image plugin for the IFUNC IM file format.\n\n\nclass ImImageFile(ImageFile.ImageFile):\n\n    format = \"IM\"\n    format_description = \"IFUNC Image Memory\"\n    _close_exclusive_fp_after_loading = False\n\n    def _open(self):\n\n        # Quick rejection: if there's not an LF among the first\n        # 100 bytes, this is (probably) not a text header.\n\n        if b\"\\n\" not in self.fp.read(100):\n            raise SyntaxError(\"not an IM file\")\n        self.fp.seek(0)\n\n        n = 0\n\n        # Default values\n        self.info[MODE] = \"L\"\n        self.info[SIZE] = (512, 512)\n        self.info[FRAMES] = 1\n\n        self.rawmode = \"L\"\n\n        while True:\n\n            s = self.fp.read(1)\n\n            # Some versions of IFUNC uses \\n\\r instead of \\r\\n...\n            if s == b\"\\r\":\n                continue\n\n            if not s or s == b\"\\0\" or s == b\"\\x1A\":\n                break\n\n            # FIXME: this may read whole file if not a text file\n            s = s + self.fp.readline()\n\n            if len(s) > 100:\n                raise SyntaxError(\"not an IM file\")\n\n            if s[-2:] == b\"\\r\\n\":\n                s = s[:-2]\n            elif s[-1:] == b\"\\n\":\n                s = s[:-1]\n\n            try:\n                m = split.match(s)\n            except re.error as e:\n                raise SyntaxError(\"not an IM file\") from e\n\n            if m:\n\n                k, v = m.group(1, 2)\n\n                # Don't know if this is the correct encoding,\n                # but a decent guess (I guess)\n                k = k.decode(\"latin-1\", \"replace\")\n                v = v.decode(\"latin-1\", \"replace\")\n\n                # Convert value as appropriate\n                if k in [FRAMES, SCALE, SIZE]:\n                    v = v.replace(\"*\", \",\")\n                    v = tuple(map(number, v.split(\",\")))\n                    if len(v) == 1:\n                        v = v[0]\n                elif k == MODE and v in OPEN:\n                    v, self.rawmode = OPEN[v]\n\n                # Add to dictionary. Note that COMMENT tags are\n                # combined into a list of strings.\n                if k == COMMENT:\n                    if k in self.info:\n                        self.info[k].append(v)\n                    else:\n                        self.info[k] = [v]\n                else:\n                    self.info[k] = v\n\n                if k in TAGS:\n                    n += 1\n\n            else:\n\n                raise SyntaxError(\n                    \"Syntax error in IM header: \" + s.decode(\"ascii\", \"replace\")\n                )\n\n        if not n:\n            raise SyntaxError(\"Not an IM file\")\n\n        # Basic attributes\n        self._size = self.info[SIZE]\n        self.mode = self.info[MODE]\n\n        # Skip forward to start of image data\n        while s and s[:1] != b\"\\x1A\":\n            s = self.fp.read(1)\n        if not s:\n            raise SyntaxError(\"File truncated\")\n\n        if LUT in self.info:\n            # convert lookup table to palette or lut attribute\n            palette = self.fp.read(768)\n            greyscale = 1  # greyscale palette\n            linear = 1  # linear greyscale palette\n            for i in range(256):\n                if palette[i] == palette[i + 256] == palette[i + 512]:\n                    if palette[i] != i:\n                        linear = 0\n                else:\n                    greyscale = 0\n            if self.mode in [\"L\", \"LA\", \"P\", \"PA\"]:\n                if greyscale:\n                    if not linear:\n                        self.lut = list(palette[:256])\n                else:\n                    if self.mode in [\"L\", \"P\"]:\n                        self.mode = self.rawmode = \"P\"\n                    elif self.mode in [\"LA\", \"PA\"]:\n                        self.mode = \"PA\"\n                        self.rawmode = \"PA;L\"\n                    self.palette = ImagePalette.raw(\"RGB;L\", palette)\n            elif self.mode == \"RGB\":\n                if not greyscale or not linear:\n                    self.lut = list(palette)\n\n        self.frame = 0\n\n        self.__offset = offs = self.fp.tell()\n\n        self._fp = self.fp  # FIXME: hack\n\n        if self.rawmode[:2] == \"F;\":\n\n            # ifunc95 formats\n            try:\n                # use bit decoder (if necessary)\n                bits = int(self.rawmode[2:])\n                if bits not in [8, 16, 32]:\n                    self.tile = [(\"bit\", (0, 0) + self.size, offs, (bits, 8, 3, 0, -1))]\n                    return\n            except ValueError:\n                pass\n\n        if self.rawmode in [\"RGB;T\", \"RYB;T\"]:\n            # Old LabEye/3PC files.  Would be very surprised if anyone\n            # ever stumbled upon such a file ;-)\n            size = self.size[0] * self.size[1]\n            self.tile = [\n                (\"raw\", (0, 0) + self.size, offs, (\"G\", 0, -1)),\n                (\"raw\", (0, 0) + self.size, offs + size, (\"R\", 0, -1)),\n                (\"raw\", (0, 0) + self.size, offs + 2 * size, (\"B\", 0, -1)),\n            ]\n        else:\n            # LabEye/IFUNC files\n            self.tile = [(\"raw\", (0, 0) + self.size, offs, (self.rawmode, 0, -1))]\n\n    @property\n    def n_frames(self):\n        return self.info[FRAMES]\n\n    @property\n    def is_animated(self):\n        return self.info[FRAMES] > 1\n\n    def seek(self, frame):\n        if not self._seek_check(frame):\n            return\n\n        self.frame = frame\n\n        if self.mode == \"1\":\n            bits = 1\n        else:\n            bits = 8 * len(self.mode)\n\n        size = ((self.size[0] * bits + 7) // 8) * self.size[1]\n        offs = self.__offset + frame * size\n\n        self.fp = self._fp\n\n        self.tile = [(\"raw\", (0, 0) + self.size, offs, (self.rawmode, 0, -1))]\n\n    def tell(self):\n        return self.frame\n\n\n#\n# --------------------------------------------------------------------\n# Save IM files\n\n\nSAVE = {\n    # mode: (im type, raw mode)\n    \"1\": (\"0 1\", \"1\"),\n    \"L\": (\"Greyscale\", \"L\"),\n    \"LA\": (\"LA\", \"LA;L\"),\n    \"P\": (\"Greyscale\", \"P\"),\n    \"PA\": (\"LA\", \"PA;L\"),\n    \"I\": (\"L 32S\", \"I;32S\"),\n    \"I;16\": (\"L 16\", \"I;16\"),\n    \"I;16L\": (\"L 16L\", \"I;16L\"),\n    \"I;16B\": (\"L 16B\", \"I;16B\"),\n    \"F\": (\"L 32F\", \"F;32F\"),\n    \"RGB\": (\"RGB\", \"RGB;L\"),\n    \"RGBA\": (\"RGBA\", \"RGBA;L\"),\n    \"RGBX\": (\"RGBX\", \"RGBX;L\"),\n    \"CMYK\": (\"CMYK\", \"CMYK;L\"),\n    \"YCbCr\": (\"YCC\", \"YCbCr;L\"),\n}\n\n\ndef _save(im, fp, filename):\n\n    try:\n        image_type, rawmode = SAVE[im.mode]\n    except KeyError as e:\n        raise ValueError(f\"Cannot save {im.mode} images as IM\") from e\n\n    frames = im.encoderinfo.get(\"frames\", 1)\n\n    fp.write(f\"Image type: {image_type} image\\r\\n\".encode(\"ascii\"))\n    if filename:\n        # Each line must be 100 characters or less,\n        # or: SyntaxError(\"not an IM file\")\n        # 8 characters are used for \"Name: \" and \"\\r\\n\"\n        # Keep just the filename, ditch the potentially overlong path\n        name, ext = os.path.splitext(os.path.basename(filename))\n        name = \"\".join([name[: 92 - len(ext)], ext])\n\n        fp.write(f\"Name: {name}\\r\\n\".encode(\"ascii\"))\n    fp.write((\"Image size (x*y): %d*%d\\r\\n\" % im.size).encode(\"ascii\"))\n    fp.write(f\"File size (no of images): {frames}\\r\\n\".encode(\"ascii\"))\n    if im.mode in [\"P\", \"PA\"]:\n        fp.write(b\"Lut: 1\\r\\n\")\n    fp.write(b\"\\000\" * (511 - fp.tell()) + b\"\\032\")\n    if im.mode in [\"P\", \"PA\"]:\n        im_palette = im.im.getpalette(\"RGB\", \"RGB;L\")\n        colors = len(im_palette) // 3\n        palette = b\"\"\n        for i in range(3):\n            palette += im_palette[colors * i : colors * (i + 1)]\n            palette += b\"\\x00\" * (256 - colors)\n        fp.write(palette)  # 768 bytes\n    ImageFile._save(im, fp, [(\"raw\", (0, 0) + im.size, 0, (rawmode, 0, -1))])\n\n\n#\n# --------------------------------------------------------------------\n# Registry\n\n\nImage.register_open(ImImageFile.format, ImImageFile)\nImage.register_save(ImImageFile.format, _save)\n\nImage.register_extension(ImImageFile.format, \".im\")\n",
            "header": {
                "file": {
                    "path": "src/PIL/ImImagePlugin.py"
                },
                "misc_line": null
            },
            "index_line": {
                "old_commit_hash": "78ccfb9cf",
                "new_commit_hash": "31b0ff469",
                "mode": "100644"
            },
            "is_binary_file": false,
            "binary_line": null,
            "minus_file": {
                "path": "a/src/PIL/ImImagePlugin.py"
            },
            "plus_file": {
                "path": "b/src/PIL/ImImagePlugin.py"
            },
            "hunks": [
                {
                    "descriptor": {
                        "old_range": {
                            "start": 352,
                            "length": 7
                        },
                        "new_range": {
                            "start": 352,
                            "length": 13
                        },
                        "section": "def _save(im, fp, filename):"
                    },
                    "line_group": {
                        "all_lines": [
                            {
                                "content": "        fp.write(b\"Lut: 1\\r\\n\")",
                                "type": "context"
                            },
                            {
                                "content": "    fp.write(b\"\\000\" * (511 - fp.tell()) + b\"\\032\")",
                                "type": "context"
                            },
                            {
                                "content": "    if im.mode in [\"P\", \"PA\"]:",
                                "type": "context"
                            },
                            {
                                "content": "        fp.write(im.im.getpalette(\"RGB\", \"RGB;L\"))  # 768 bytes",
                                "type": "deleted"
                            },
                            {
                                "content": "        im_palette = im.im.getpalette(\"RGB\", \"RGB;L\")",
                                "type": "added"
                            },
                            {
                                "content": "        colors = len(im_palette) // 3",
                                "type": "added"
                            },
                            {
                                "content": "        palette = b\"\"",
                                "type": "added"
                            },
                            {
                                "content": "        for i in range(3):",
                                "type": "added"
                            },
                            {
                                "content": "            palette += im_palette[colors * i : colors * (i + 1)]",
                                "type": "added"
                            },
                            {
                                "content": "            palette += b\"\\x00\" * (256 - colors)",
                                "type": "added"
                            },
                            {
                                "content": "        fp.write(palette)  # 768 bytes",
                                "type": "added"
                            },
                            {
                                "content": "    ImageFile._save(im, fp, [(\"raw\", (0, 0) + im.size, 0, (rawmode, 0, -1))])",
                                "type": "context"
                            },
                            {
                                "content": "",
                                "type": "context"
                            },
                            {
                                "content": "",
                                "type": "context"
                            },
                            {
                                "content": "",
                                "type": "context"
                            }
                        ]
                    },
                    "modified_entities": [
                        {
                            "file_name": "src/PIL/ImImagePlugin.py",
                            "type": "function",
                            "name": "_save",
                            "content": "def _save(im, fp, filename):\n\n    try:\n        image_type, rawmode = SAVE[im.mode]\n    except KeyError as e:\n        raise ValueError(f\"Cannot save {im.mode} images as IM\") from e\n\n    frames = im.encoderinfo.get(\"frames\", 1)\n\n    fp.write(f\"Image type: {image_type} image\\r\\n\".encode(\"ascii\"))\n    if filename:\n        # Each line must be 100 characters or less,\n        # or: SyntaxError(\"not an IM file\")\n        # 8 characters are used for \"Name: \" and \"\\r\\n\"\n        # Keep just the filename, ditch the potentially overlong path\n        name, ext = os.path.splitext(os.path.basename(filename))\n        name = \"\".join([name[: 92 - len(ext)], ext])\n\n        fp.write(f\"Name: {name}\\r\\n\".encode(\"ascii\"))\n    fp.write((\"Image size (x*y): %d*%d\\r\\n\" % im.size).encode(\"ascii\"))\n    fp.write(f\"File size (no of images): {frames}\\r\\n\".encode(\"ascii\"))\n    if im.mode in [\"P\", \"PA\"]:\n        fp.write(b\"Lut: 1\\r\\n\")\n    fp.write(b\"\\000\" * (511 - fp.tell()) + b\"\\032\")\n    if im.mode in [\"P\", \"PA\"]:\n        fp.write(im.im.getpalette(\"RGB\", \"RGB;L\"))  # 768 bytes\n    ImageFile._save(im, fp, [(\"raw\", (0, 0) + im.size, 0, (rawmode, 0, -1))])",
                            "ast_type_str": "FunctionDef",
                            "start_lineno": 330,
                            "end_lineno": 356,
                            "parent": null
                        }
                    ],
                    "added_entities": [],
                    "deleted_entities": []
                }
            ]
        }
    ],
    "old_commit_hash": "5076d347759ce1768ce106feccfdaa4c3575b3db^",
    "new_commit_hash": "5076d347759ce1768ce106feccfdaa4c3575b3db",
    "commit_message": "Merge pull request #6579 from radarhere/im\n\nPad IM palette to 768 bytes when saving",
    "commit_date": "2022-10-11T16:47:43+02:00",
    "metadata": {}
}
{
    "repo_name": "pillow",
    "new_commit_hash": "5076d347759ce1768ce106feccfdaa4c3575b3db",
    "test_file_codes": [
        "import filecmp\nimport warnings\n\nimport pytest\n\nfrom PIL import Image, ImImagePlugin\n\nfrom .helper import assert_image_equal_tofile, hopper, is_pypy\n\n# sample im\nTEST_IM = \"Tests/images/hopper.im\"\n\n\ndef test_sanity():\n    with Image.open(TEST_IM) as im:\n        im.load()\n        assert im.mode == \"RGB\"\n        assert im.size == (128, 128)\n        assert im.format == \"IM\"\n\n\ndef test_name_limit(tmp_path):\n    out = str(tmp_path / (\"name_limit_test\" * 7 + \".im\"))\n    with Image.open(TEST_IM) as im:\n        im.save(out)\n    assert filecmp.cmp(out, \"Tests/images/hopper_long_name.im\")\n\n\n@pytest.mark.skipif(is_pypy(), reason=\"Requires CPython\")\ndef test_unclosed_file():\n    def open():\n        im = Image.open(TEST_IM)\n        im.load()\n\n    pytest.warns(ResourceWarning, open)\n\n\ndef test_closed_file():\n    with warnings.catch_warnings():\n        im = Image.open(TEST_IM)\n        im.load()\n        im.close()\n\n\ndef test_context_manager():\n    with warnings.catch_warnings():\n        with Image.open(TEST_IM) as im:\n            im.load()\n\n\ndef test_tell():\n    # Arrange\n    with Image.open(TEST_IM) as im:\n\n        # Act\n        frame = im.tell()\n\n    # Assert\n    assert frame == 0\n\n\ndef test_n_frames():\n    with Image.open(TEST_IM) as im:\n        assert im.n_frames == 1\n        assert not im.is_animated\n\n\ndef test_eoferror():\n    with Image.open(TEST_IM) as im:\n        n_frames = im.n_frames\n\n        # Test seeking past the last frame\n        with pytest.raises(EOFError):\n            im.seek(n_frames)\n        assert im.tell() < n_frames\n\n        # Test that seeking to the last frame does not raise an error\n        im.seek(n_frames - 1)\n\n\n@pytest.mark.parametrize(\"mode\", (\"RGB\", \"P\", \"PA\"))\ndef test_roundtrip(mode, tmp_path):\n    out = str(tmp_path / \"temp.im\")\n    im = hopper(mode)\n    im.save(out)\n    assert_image_equal_tofile(im, out)\n\n\ndef test_small_palette(tmp_path):\n    im = Image.new(\"P\", (1, 1))\n    colors = [0, 1, 2]\n    im.putpalette(colors)\n\n    out = str(tmp_path / \"temp.im\")\n    im.save(out)\n\n    with Image.open(out) as reloaded:\n        assert reloaded.getpalette() == colors + [0] * 765\n\n\ndef test_save_unsupported_mode(tmp_path):\n    out = str(tmp_path / \"temp.im\")\n    im = hopper(\"HSV\")\n    with pytest.raises(ValueError):\n        im.save(out)\n\n\ndef test_invalid_file():\n    invalid_file = \"Tests/images/flower.jpg\"\n\n    with pytest.raises(SyntaxError):\n        ImImagePlugin.ImImageFile(invalid_file)\n\n\ndef test_number():\n    assert ImImagePlugin.number(\"1.2\") == 1.2\n"
    ],
    "test_file_names": [
        "test_1.py"
    ],
    "setup_res_code": 0,
    "setup_res_stdout": "Starting Pillow installation attempts...\nVerifying Pillow installation...\n✅ Pillow installation successful!\nSuccessfully installed Pillow\n",
    "setup_res_stderr": "Using CPython 3.9.21\nCreating virtual environment at: .venv\nActivate with: source .venv/bin/activate\nResolved 12 packages in 17ms\nInstalled 12 packages in 135ms\n + coverage==7.6.10\n + exceptiongroup==1.2.2\n + iniconfig==2.0.0\n + packaging==24.2\n + pluggy==1.5.0\n + pyqt5==5.15.11\n + pyqt5-qt5==5.15.16\n + pyqt5-sip==12.16.1\n + pytest==8.3.4\n + pytest-cov==6.0.0\n + setuptools==75.8.0\n + tomli==2.2.1\nResolved 1 package in 745ms\nPrepared 1 package in 33.75s\nInstalled 1 package in 1ms\n + pillow==9.3.0.dev0 (from file:///home/gcpuser/buckets/local_repoeval_bucket/repos/pillow_5076d347759ce1768ce106feccfdaa4c3575b3db)\n",
    "new_commit_res_code": 0,
    "new_commit_res_stdout": "\u001b[1m============================= test session starts ==============================\u001b[0m\nplatform linux -- Python 3.9.21, pytest-8.3.4, pluggy-1.5.0\nrootdir: /home/gcpuser/buckets/local_repoeval_bucket/repos/pillow_5076d347759ce1768ce106feccfdaa4c3575b3db\nconfigfile: setup.cfg\nplugins: cov-6.0.0\ncollected 15 items\n\nr2e_tests/test_1.py \u001b[32m.\u001b[0m\u001b[32m.\u001b[0m\u001b[32m.\u001b[0m\u001b[32m.\u001b[0m\u001b[32m.\u001b[0m\u001b[32m.\u001b[0m\u001b[32m.\u001b[0m\u001b[32m.\u001b[0m\u001b[32m.\u001b[0m\u001b[32m.\u001b[0m\u001b[32m.\u001b[0m\u001b[32m.\u001b[0m\u001b[32m.\u001b[0m\u001b[32m.\u001b[0m\u001b[32m.\u001b[0m\u001b[32m                                      [100%]\u001b[0m\n\n==================================== PASSES ====================================\n\u001b[36m\u001b[1m=========================== short test summary info ============================\u001b[0m\n\u001b[32mPASSED\u001b[0m r2e_tests/test_1.py::\u001b[1mtest_sanity\u001b[0m\n\u001b[32mPASSED\u001b[0m r2e_tests/test_1.py::\u001b[1mtest_name_limit\u001b[0m\n\u001b[32mPASSED\u001b[0m r2e_tests/test_1.py::\u001b[1mtest_unclosed_file\u001b[0m\n\u001b[32mPASSED\u001b[0m r2e_tests/test_1.py::\u001b[1mtest_closed_file\u001b[0m\n\u001b[32mPASSED\u001b[0m r2e_tests/test_1.py::\u001b[1mtest_context_manager\u001b[0m\n\u001b[32mPASSED\u001b[0m r2e_tests/test_1.py::\u001b[1mtest_tell\u001b[0m\n\u001b[32mPASSED\u001b[0m r2e_tests/test_1.py::\u001b[1mtest_n_frames\u001b[0m\n\u001b[32mPASSED\u001b[0m r2e_tests/test_1.py::\u001b[1mtest_eoferror\u001b[0m\n\u001b[32mPASSED\u001b[0m r2e_tests/test_1.py::\u001b[1mtest_roundtrip[RGB]\u001b[0m\n\u001b[32mPASSED\u001b[0m r2e_tests/test_1.py::\u001b[1mtest_roundtrip[P]\u001b[0m\n\u001b[32mPASSED\u001b[0m r2e_tests/test_1.py::\u001b[1mtest_roundtrip[PA]\u001b[0m\n\u001b[32mPASSED\u001b[0m r2e_tests/test_1.py::\u001b[1mtest_small_palette\u001b[0m\n\u001b[32mPASSED\u001b[0m r2e_tests/test_1.py::\u001b[1mtest_save_unsupported_mode\u001b[0m\n\u001b[32mPASSED\u001b[0m r2e_tests/test_1.py::\u001b[1mtest_invalid_file\u001b[0m\n\u001b[32mPASSED\u001b[0m r2e_tests/test_1.py::\u001b[1mtest_number\u001b[0m\n\u001b[32m============================== \u001b[32m\u001b[1m15 passed\u001b[0m\u001b[32m in 0.12s\u001b[0m\u001b[32m ==============================\u001b[0m\n",
    "new_commit_res_stderr": "",
    "old_commit_res_code": 1,
    "old_commit_res_stdout": "\u001b[1m============================= test session starts ==============================\u001b[0m\nplatform linux -- Python 3.9.21, pytest-8.3.4, pluggy-1.5.0\nrootdir: /home/gcpuser/buckets/local_repoeval_bucket/repos/pillow_5076d347759ce1768ce106feccfdaa4c3575b3db\nconfigfile: setup.cfg\nplugins: cov-6.0.0\ncollected 15 items\n\nr2e_tests/test_1.py \u001b[32m.\u001b[0m\u001b[32m.\u001b[0m\u001b[32m.\u001b[0m\u001b[32m.\u001b[0m\u001b[32m.\u001b[0m\u001b[32m.\u001b[0m\u001b[32m.\u001b[0m\u001b[32m.\u001b[0m\u001b[32m.\u001b[0m\u001b[32m.\u001b[0m\u001b[32m.\u001b[0m\u001b[31mF\u001b[0m\u001b[32m.\u001b[0m\u001b[32m.\u001b[0m\u001b[32m.\u001b[0m\u001b[31m                                      [100%]\u001b[0m\n\n=================================== FAILURES ===================================\n\u001b[31m\u001b[1m______________________________ test_small_palette ______________________________\u001b[0m\n\ntmp_path = PosixPath('/tmp/pytest-of-gcpuser/pytest-258/test_small_palette0')\n\n    def test_small_palette(tmp_path):\n        im = Image.new(\"P\", (1, 1))\n        colors = [0, 1, 2]\n        im.putpalette(colors)\n    \n        out = str(tmp_path / \"temp.im\")\n        im.save(out)\n    \n>       with Image.open(out) as reloaded:\n\n\u001b[1m\u001b[31mr2e_tests/test_1.py\u001b[0m:97: \n_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ \n\nfp = <_io.BufferedReader name='/tmp/pytest-of-gcpuser/pytest-258/test_small_palette0/temp.im'>\nmode = 'r', formats = ['IM', 'BMP', 'DIB', 'GIF', 'TIFF', 'JPEG', ...]\n\n    def open(fp, mode=\"r\", formats=None):\n        \"\"\"\n        Opens and identifies the given image file.\n    \n        This is a lazy operation; this function identifies the file, but\n        the file remains open and the actual image data is not read from\n        the file until you try to process the data (or call the\n        :py:meth:`~PIL.Image.Image.load` method).  See\n        :py:func:`~PIL.Image.new`. See :ref:`file-handling`.\n    \n        :param fp: A filename (string), pathlib.Path object or a file object.\n           The file object must implement ``file.read``,\n           ``file.seek``, and ``file.tell`` methods,\n           and be opened in binary mode.\n        :param mode: The mode.  If given, this argument must be \"r\".\n        :param formats: A list or tuple of formats to attempt to load the file in.\n           This can be used to restrict the set of formats checked.\n           Pass ``None`` to try all supported formats. You can print the set of\n           available formats by running ``python3 -m PIL`` or using\n           the :py:func:`PIL.features.pilinfo` function.\n        :returns: An :py:class:`~PIL.Image.Image` object.\n        :exception FileNotFoundError: If the file cannot be found.\n        :exception PIL.UnidentifiedImageError: If the image cannot be opened and\n           identified.\n        :exception ValueError: If the ``mode`` is not \"r\", or if a ``StringIO``\n           instance is used for ``fp``.\n        :exception TypeError: If ``formats`` is not ``None``, a list or a tuple.\n        \"\"\"\n    \n        if mode != \"r\":\n            raise ValueError(f\"bad mode {repr(mode)}\")\n        elif isinstance(fp, io.StringIO):\n            raise ValueError(\n                \"StringIO cannot be used to open an image. \"\n                \"Binary data must be used instead.\"\n            )\n    \n        if formats is None:\n            formats = ID\n        elif not isinstance(formats, (list, tuple)):\n            raise TypeError(\"formats must be a list or tuple\")\n    \n        exclusive_fp = False\n        filename = \"\"\n        if isinstance(fp, Path):\n            filename = str(fp.resolve())\n        elif is_path(fp):\n            filename = fp\n    \n        if filename:\n            fp = builtins.open(filename, \"rb\")\n            exclusive_fp = True\n    \n        try:\n            fp.seek(0)\n        except (AttributeError, io.UnsupportedOperation):\n            fp = io.BytesIO(fp.read())\n            exclusive_fp = True\n    \n        prefix = fp.read(16)\n    \n        preinit()\n    \n        accept_warnings = []\n    \n        def _open_core(fp, filename, prefix, formats):\n            for i in formats:\n                i = i.upper()\n                if i not in OPEN:\n                    init()\n                try:\n                    factory, accept = OPEN[i]\n                    result = not accept or accept(prefix)\n                    if type(result) in [str, bytes]:\n                        accept_warnings.append(result)\n                    elif result:\n                        fp.seek(0)\n                        im = factory(fp, filename)\n                        _decompression_bomb_check(im.size)\n                        return im\n                except (SyntaxError, IndexError, TypeError, struct.error):\n                    # Leave disabled by default, spams the logs with image\n                    # opening failures that are entirely expected.\n                    # logger.debug(\"\", exc_info=True)\n                    continue\n                except BaseException:\n                    if exclusive_fp:\n                        fp.close()\n                    raise\n            return None\n    \n        im = _open_core(fp, filename, prefix, formats)\n    \n        if im is None:\n            if init():\n                im = _open_core(fp, filename, prefix, formats)\n    \n        if im:\n            im._exclusive_fp = exclusive_fp\n            return im\n    \n        if exclusive_fp:\n            fp.close()\n        for message in accept_warnings:\n            warnings.warn(message)\n>       raise UnidentifiedImageError(\n            \"cannot identify image file %r\" % (filename if filename else fp)\n        )\n\u001b[1m\u001b[31mE       PIL.UnidentifiedImageError: cannot identify image file '/tmp/pytest-of-gcpuser/pytest-258/test_small_palette0/temp.im'\u001b[0m\n\n\u001b[1m\u001b[31msrc/PIL/Image.py\u001b[0m:3155: UnidentifiedImageError\n==================================== PASSES ====================================\n\u001b[36m\u001b[1m=========================== short test summary info ============================\u001b[0m\n\u001b[32mPASSED\u001b[0m r2e_tests/test_1.py::\u001b[1mtest_sanity\u001b[0m\n\u001b[32mPASSED\u001b[0m r2e_tests/test_1.py::\u001b[1mtest_name_limit\u001b[0m\n\u001b[32mPASSED\u001b[0m r2e_tests/test_1.py::\u001b[1mtest_unclosed_file\u001b[0m\n\u001b[32mPASSED\u001b[0m r2e_tests/test_1.py::\u001b[1mtest_closed_file\u001b[0m\n\u001b[32mPASSED\u001b[0m r2e_tests/test_1.py::\u001b[1mtest_context_manager\u001b[0m\n\u001b[32mPASSED\u001b[0m r2e_tests/test_1.py::\u001b[1mtest_tell\u001b[0m\n\u001b[32mPASSED\u001b[0m r2e_tests/test_1.py::\u001b[1mtest_n_frames\u001b[0m\n\u001b[32mPASSED\u001b[0m r2e_tests/test_1.py::\u001b[1mtest_eoferror\u001b[0m\n\u001b[32mPASSED\u001b[0m r2e_tests/test_1.py::\u001b[1mtest_roundtrip[RGB]\u001b[0m\n\u001b[32mPASSED\u001b[0m r2e_tests/test_1.py::\u001b[1mtest_roundtrip[P]\u001b[0m\n\u001b[32mPASSED\u001b[0m r2e_tests/test_1.py::\u001b[1mtest_roundtrip[PA]\u001b[0m\n\u001b[32mPASSED\u001b[0m r2e_tests/test_1.py::\u001b[1mtest_save_unsupported_mode\u001b[0m\n\u001b[32mPASSED\u001b[0m r2e_tests/test_1.py::\u001b[1mtest_invalid_file\u001b[0m\n\u001b[32mPASSED\u001b[0m r2e_tests/test_1.py::\u001b[1mtest_number\u001b[0m\n\u001b[31mFAILED\u001b[0m r2e_tests/test_1.py::\u001b[1mtest_small_palette\u001b[0m - PIL.UnidentifiedImageError: cannot identify image file '/tmp/pytest-of-gcpu...\n\u001b[31m========================= \u001b[31m\u001b[1m1 failed\u001b[0m, \u001b[32m14 passed\u001b[0m\u001b[31m in 0.20s\u001b[0m\u001b[31m =========================\u001b[0m\n",
    "old_commit_res_stderr": ""
}
Tests/test_file_im.py src/PIL/ImImagePlugin.py
We are currently solving the following issue within our repository. Here is the issue text:
--- BEGIN ISSUE ---
[ISSUE]
**Title:** Saving IM Images with Small Palettes Fails to Pad Palette to 768 Bytes

**Description:**
When attempting to save an image with a small palette using the IM format, the palette is not correctly padded to 768 bytes. This results in the saved image file being invalid and unable to be opened, causing an `UnidentifiedImageError`.

**Example Code:**
```python
from PIL import Image

# Create an image with a small palette
im = Image.new("P", (1, 1))
colors = [0, 1, 2]
im.putpalette(colors)

# Save the image
im.save("temp.im")

# Attempt to reload the image
with Image.open("temp.im") as reloaded:
    palette = reloaded.getpalette()
    # Expect the palette to be padded with zeros to reach 768 bytes
```

**Expected Behavior:**
The saved IM file should have a palette that is padded with zeros to a total of 768 bytes, ensuring the image can be successfully reopened without errors.

**Actual Behavior:**
Opening the saved IM file raises the following error:
```
PIL.UnidentifiedImageError: cannot identify image file 'temp.im'
```
This indicates that the palette padding is insufficient, making the image file unreadable.

[/ISSUE]
--- END ISSUE ---

Below are some code segments, each from a relevant file. One or more of these files may contain bugs.

--- BEGIN FILE ---
```
### src/PIL/ImImagePlugin.py
#
# The Python Imaging Library.
# $Id$
#
# IFUNC IM file handling for PIL
#
# history:
# 1995-09-01 fl   Created.
# 1997-01-03 fl   Save palette images
# 1997-01-08 fl   Added sequence support
# 1997-01-23 fl   Added P and RGB save support
# 1997-05-31 fl   Read floating point images
# 1997-06-22 fl   Save floating point images
# 1997-08-27 fl   Read and save 1-bit images
# 1998-06-25 fl   Added support for RGB+LUT images
# 1998-07-02 fl   Added support for YCC images
# 1998-07-15 fl   Renamed offset attribute to avoid name clash
# 1998-12-29 fl   Added I;16 support
# 2001-02-17 fl   Use 're' instead of 'regex' (Python 2.1) (0.7)
# 2003-09-26 fl   Added LA/PA support
#
# Copyright (c) 1997-2003 by Secret Labs AB.
# Copyright (c) 1995-2001 by Fredrik Lundh.
#
# See the README file for information on usage and redistribution.
#


import os
import re

from . import Image, ImageFile, ImagePalette

# --------------------------------------------------------------------
# Standard tags

COMMENT = "Comment"
DATE = "Date"
EQUIPMENT = "Digitalization equipment"
FRAMES = "File size (no of images)"
LUT = "Lut"
NAME = "Name"
SCALE = "Scale (x,y)"
SIZE = "Image size (x*y)"
MODE = "Image type"

TAGS = {
    COMMENT: 0,
    DATE: 0,
    EQUIPMENT: 0,
    FRAMES: 0,
    LUT: 0,
    NAME: 0,
    SCALE: 0,
    SIZE: 0,
    MODE: 0,
}

OPEN = {
    # ifunc93/p3cfunc formats
    "0 1 image": ("1", "1"),
    "L 1 image": ("1", "1"),
    "Greyscale image": ("L", "L"),
    "Grayscale image": ("L", "L"),
    "RGB image": ("RGB", "RGB;L"),
    "RLB image": ("RGB", "RLB"),
    "RYB image": ("RGB", "RLB"),
    "B1 image": ("1", "1"),
    "B2 image": ("P", "P;2"),
    "B4 image": ("P", "P;4"),
    "X 24 image": ("RGB", "RGB"),
    "L 32 S image": ("I", "I;32"),
    "L 32 F image": ("F", "F;32"),
    # old p3cfunc formats
    "RGB3 image": ("RGB", "RGB;T"),
    "RYB3 image": ("RGB", "RYB;T"),
    # extensions
    "LA image": ("LA", "LA;L"),
    "PA image": ("LA", "PA;L"),
    "RGBA image": ("RGBA", "RGBA;L"),
    "RGBX image": ("RGBX", "RGBX;L"),
    "CMYK image": ("CMYK", "CMYK;L"),
    "YCC image": ("YCbCr", "YCbCr;L"),
}

# ifunc95 extensions
for i in ["8", "8S", "16", "16S", "32", "32F"]:
    OPEN[f"L {i} image"] = ("F", f"F;{i}")
    OPEN[f"L*{i} image"] = ("F", f"F;{i}")
for i in ["16", "16L", "16B"]:
    OPEN[f"L {i} image"] = (f"I;{i}", f"I;{i}")
    OPEN[f"L*{i} image"] = (f"I;{i}", f"I;{i}")
for i in ["32S"]:
    OPEN[f"L {i} image"] = ("I", f"I;{i}")
    OPEN[f"L*{i} image"] = ("I", f"I;{i}")
for i in range(2, 33):
    OPEN[f"L*{i} image"] = ("F", f"F;{i}")


# --------------------------------------------------------------------
# Read IM directory

split = re.compile(rb"^([A-Za-z][^:]*):[ \t]*(.*)[ \t]*$")


def number(s):
    try:
        return int(s)
    except ValueError:
        return float(s)


##
# Image plugin for the IFUNC IM file format.


class ImImageFile(ImageFile.ImageFile):

    format = "IM"
    format_description = "IFUNC Image Memory"
    _close_exclusive_fp_after_loading = False

    def _open(self):

        # Quick rejection: if there's not an LF among the first
        # 100 bytes, this is (probably) not a text header.

        if b"\n" not in self.fp.read(100):
            raise SyntaxError("not an IM file")
        self.fp.seek(0)

        n = 0

        # Default values
        self.info[MODE] = "L"
        self.info[SIZE] = (512, 512)
        self.info[FRAMES] = 1

        self.rawmode = "L"

        while True:

            s = self.fp.read(1)

            # Some versions of IFUNC uses \n\r instead of \r\n...
            if s == b"\r":
                continue

            if not s or s == b"\0" or s == b"\x1A":
                break

            # FIXME: this may read whole file if not a text file
            s = s + self.fp.readline()

            if len(s) > 100:
                raise SyntaxError("not an IM file")

            if s[-2:] == b"\r\n":
                s = s[:-2]
            elif s[-1:] == b"\n":
                s = s[:-1]

            try:
                m = split.match(s)
            except re.error as e:
                raise SyntaxError("not an IM file") from e

            if m:

                k, v = m.group(1, 2)

                # Don't know if this is the correct encoding,
                # but a decent guess (I guess)
                k = k.decode("latin-1", "replace")
                v = v.decode("latin-1", "replace")

                # Convert value as appropriate
                if k in [FRAMES, SCALE, SIZE]:
                    v = v.replace("*", ",")
                    v = tuple(map(number, v.split(",")))
                    if len(v) == 1:
                        v = v[0]
                elif k == MODE and v in OPEN:
                    v, self.rawmode = OPEN[v]

                # Add to dictionary. Note that COMMENT tags are
                # combined into a list of strings.
                if k == COMMENT:
                    if k in self.info:
                        self.info[k].append(v)
                    else:
                        self.info[k] = [v]
                else:
                    self.info[k] = v

                if k in TAGS:
                    n += 1

            else:

                raise SyntaxError(
                    "Syntax error in IM header: " + s.decode("ascii", "replace")
                )

        if not n:
            raise SyntaxError("Not an IM file")

        # Basic attributes
        self._size = self.info[SIZE]
        self.mode = self.info[MODE]

        # Skip forward to start of image data
        while s and s[:1] != b"\x1A":
            s = self.fp.read(1)
        if not s:
            raise SyntaxError("File truncated")

        if LUT in self.info:
            # convert lookup table to palette or lut attribute
            palette = self.fp.read(768)
            greyscale = 1  # greyscale palette
            linear = 1  # linear greyscale palette
            for i in range(256):
                if palette[i] == palette[i + 256] == palette[i + 512]:
                    if palette[i] != i:
                        linear = 0
                else:
                    greyscale = 0
            if self.mode in ["L", "LA", "P", "PA"]:
                if greyscale:
                    if not linear:
                        self.lut = list(palette[:256])
                else:
                    if self.mode in ["L", "P"]:
                        self.mode = self.rawmode = "P"
                    elif self.mode in ["LA", "PA"]:
                        self.mode = "PA"
                        self.rawmode = "PA;L"
                    self.palette = ImagePalette.raw("RGB;L", palette)
            elif self.mode == "RGB":
                if not greyscale or not linear:
                    self.lut = list(palette)

        self.frame = 0

        self.__offset = offs = self.fp.tell()

        self._fp = self.fp  # FIXME: hack

        if self.rawmode[:2] == "F;":

            # ifunc95 formats
            try:
                # use bit decoder (if necessary)
                bits = int(self.rawmode[2:])
                if bits not in [8, 16, 32]:
                    self.tile = [("bit", (0, 0) + self.size, offs, (bits, 8, 3, 0, -1))]
                    return
            except ValueError:
                pass

        if self.rawmode in ["RGB;T", "RYB;T"]:
            # Old LabEye/3PC files.  Would be very surprised if anyone
            # ever stumbled upon such a file ;-)
            size = self.size[0] * self.size[1]
            self.tile = [
                ("raw", (0, 0) + self.size, offs, ("G", 0, -1)),
                ("raw", (0, 0) + self.size, offs + size, ("R", 0, -1)),
                ("raw", (0, 0) + self.size, offs + 2 * size, ("B", 0, -1)),
            ]
        else:
            # LabEye/IFUNC files
            self.tile = [("raw", (0, 0) + self.size, offs, (self.rawmode, 0, -1))]

    @property
    def n_frames(self):
        return self.info[FRAMES]

    @property
    def is_animated(self):
        return self.info[FRAMES] > 1

    def seek(self, frame):
        if not self._seek_check(frame):
            return

        self.frame = frame

        if self.mode == "1":
            bits = 1
        else:
            bits = 8 * len(self.mode)

        size = ((self.size[0] * bits + 7) // 8) * self.size[1]
        offs = self.__offset + frame * size

        self.fp = self._fp

        self.tile = [("raw", (0, 0) + self.size, offs, (self.rawmode, 0, -1))]

    def tell(self):
        return self.frame


#
# --------------------------------------------------------------------
# Save IM files


SAVE = {
    # mode: (im type, raw mode)
    "1": ("0 1", "1"),
    "L": ("Greyscale", "L"),
    "LA": ("LA", "LA;L"),
    "P": ("Greyscale", "P"),
    "PA": ("LA", "PA;L"),
    "I": ("L 32S", "I;32S"),
    "I;16": ("L 16", "I;16"),
    "I;16L": ("L 16L", "I;16L"),
    "I;16B": ("L 16B", "I;16B"),
    "F": ("L 32F", "F;32F"),
    "RGB": ("RGB", "RGB;L"),
    "RGBA": ("RGBA", "RGBA;L"),
    "RGBX": ("RGBX", "RGBX;L"),
    "CMYK": ("CMYK", "CMYK;L"),
    "YCbCr": ("YCC", "YCbCr;L"),
}


def _save(im, fp, filename):

    try:
        image_type, rawmode = SAVE[im.mode]
    except KeyError as e:
        raise ValueError(f"Cannot save {im.mode} images as IM") from e

    frames = im.encoderinfo.get("frames", 1)

    fp.write(f"Image type: {image_type} image\r\n".encode("ascii"))
    if filename:
        # Each line must be 100 characters or less,
        # or: SyntaxError("not an IM file")
        # 8 characters are used for "Name: " and "\r\n"
        # Keep just the filename, ditch the potentially overlong path
        name, ext = os.path.splitext(os.path.basename(filename))
        name = "".join([name[: 92 - len(ext)], ext])

        fp.write(f"Name: {name}\r\n".encode("ascii"))
    fp.write(("Image size (x*y): %d*%d\r\n" % im.size).encode("ascii"))
    fp.write(f"File size (no of images): {frames}\r\n".encode("ascii"))
    if im.mode in ["P", "PA"]:
        fp.write(b"Lut: 1\r\n")
    fp.write(b"\000" * (511 - fp.tell()) + b"\032")
    if im.mode in ["P", "PA"]:
        fp.write(im.im.getpalette("RGB", "RGB;L"))  # 768 bytes
    ImageFile._save(im, fp, [("raw", (0, 0) + im.size, 0, (rawmode, 0, -1))])


#
# --------------------------------------------------------------------
# Registry


Image.register_open(ImImageFile.format, ImImageFile)
Image.register_save(ImImageFile.format, _save)

Image.register_extension(ImImageFile.format, ".im")

```
--- END FILE ---

Please first localize the bug based on the issue statement, and then generate *SEARCH/REPLACE* edits to fix the issue.

Every *SEARCH/REPLACE* edit must use this format:
1. The file path
2. The start of search block: <<<<<<< SEARCH
3. A contiguous chunk of lines to search for in the existing source code
4. The dividing line: =======
5. The lines to replace into the source code
6. The end of the replace block: >>>>>>> REPLACE

Here is an example:

```python
### mathweb/flask/app.py
<<<<<<< SEARCH
from flask import Flask
=======
import math
from flask import Flask
>>>>>>> REPLACE
```
</solution>

Please note that the *SEARCH/REPLACE* edit REQUIRES PROPER INDENTATION. If you would like to add the line '        print(x)', you must fully write that out, with all those spaces before the code!
Wrap each *SEARCH/REPLACE* edit in a code block as shown in the example above. If you have multiple *SEARCH/REPLACE* edits, use a separate code block for each one.
[ISSUE]
**Title:** Saving IM Images with Small Palettes Fails to Pad Palette to 768 Bytes

**Description:**
When attempting to save an image with a small palette using the IM format, the palette is not correctly padded to 768 bytes. This results in the saved image file being invalid and unable to be opened, causing an `UnidentifiedImageError`.

**Example Code:**
```python
from PIL import Image

# Create an image with a small palette
im = Image.new("P", (1, 1))
colors = [0, 1, 2]
im.putpalette(colors)

# Save the image
im.save("temp.im")

# Attempt to reload the image
with Image.open("temp.im") as reloaded:
    palette = reloaded.getpalette()
    # Expect the palette to be padded with zeros to reach 768 bytes
```

**Expected Behavior:**
The saved IM file should have a palette that is padded with zeros to a total of 768 bytes, ensuring the image can be successfully reopened without errors.

**Actual Behavior:**
Opening the saved IM file raises the following error:
```
PIL.UnidentifiedImageError: cannot identify image file 'temp.im'
```
This indicates that the palette padding is insufficient, making the image file unreadable.

[/ISSUE]
{
    "\u001b[1mtest_sanity\u001b[0m": "PASSED",
    "\u001b[1mtest_name_limit\u001b[0m": "PASSED",
    "\u001b[1mtest_unclosed_file\u001b[0m": "PASSED",
    "\u001b[1mtest_closed_file\u001b[0m": "PASSED",
    "\u001b[1mtest_context_manager\u001b[0m": "PASSED",
    "\u001b[1mtest_tell\u001b[0m": "PASSED",
    "\u001b[1mtest_n_frames\u001b[0m": "PASSED",
    "\u001b[1mtest_eoferror\u001b[0m": "PASSED",
    "\u001b[1mtest_roundtrip[RGB]\u001b[0m": "PASSED",
    "\u001b[1mtest_roundtrip[P]\u001b[0m": "PASSED",
    "\u001b[1mtest_roundtrip[PA]\u001b[0m": "PASSED",
    "\u001b[1mtest_small_palette\u001b[0m": "PASSED",
    "\u001b[1mtest_save_unsupported_mode\u001b[0m": "PASSED",
    "\u001b[1mtest_invalid_file\u001b[0m": "PASSED",
    "\u001b[1mtest_number\u001b[0m": "PASSED"
}
diff --git a/src/PIL/ImImagePlugin.py b/src/PIL/ImImagePlugin.py
index 78ccfb9cf..31b0ff469 100644
--- a/src/PIL/ImImagePlugin.py
+++ b/src/PIL/ImImagePlugin.py
@@ -352,7 +352,13 @@ def _save(im, fp, filename):
         fp.write(b"Lut: 1\r\n")
     fp.write(b"\000" * (511 - fp.tell()) + b"\032")
     if im.mode in ["P", "PA"]:
-        fp.write(im.im.getpalette("RGB", "RGB;L"))  # 768 bytes
+        im_palette = im.im.getpalette("RGB", "RGB;L")
+        colors = len(im_palette) // 3
+        palette = b""
+        for i in range(3):
+            palette += im_palette[colors * i : colors * (i + 1)]
+            palette += b"\x00" * (256 - colors)
+        fp.write(palette)  # 768 bytes
     ImageFile._save(im, fp, [("raw", (0, 0) + im.size, 0, (rawmode, 0, -1))])
 
 
 

{"src/PIL/ImImagePlugin.py": "#\n# The Python Imaging Library.\n# $Id$\n#\n# IFUNC IM file handling for PIL\n#\n# history:\n# 1995-09-01 fl   Created.\n# 1997-01-03 fl   Save palette images\n# 1997-01-08 fl   Added sequence support\n# 1997-01-23 fl   Added P and RGB save support\n# 1997-05-31 fl   Read floating point images\n# 1997-06-22 fl   Save floating point images\n# 1997-08-27 fl   Read and save 1-bit images\n# 1998-06-25 fl   Added support for RGB+LUT images\n# 1998-07-02 fl   Added support for YCC images\n# 1998-07-15 fl   Renamed offset attribute to avoid name clash\n# 1998-12-29 fl   Added I;16 support\n# 2001-02-17 fl   Use 're' instead of 'regex' (Python 2.1) (0.7)\n# 2003-09-26 fl   Added LA/PA support\n#\n# Copyright (c) 1997-2003 by Secret Labs AB.\n# Copyright (c) 1995-2001 by Fredrik Lundh.\n#\n# See the README file for information on usage and redistribution.\n#\n\n\nimport os\nimport re\n\nfrom . import Image, ImageFile, ImagePalette\n\n# --------------------------------------------------------------------\n# Standard tags\n\nCOMMENT = \"Comment\"\nDATE = \"Date\"\nEQUIPMENT = \"Digitalization equipment\"\nFRAMES = \"File size (no of images)\"\nLUT = \"Lut\"\nNAME = \"Name\"\nSCALE = \"Scale (x,y)\"\nSIZE = \"Image size (x*y)\"\nMODE = \"Image type\"\n\nTAGS = {\n    COMMENT: 0,\n    DATE: 0,\n    EQUIPMENT: 0,\n    FRAMES: 0,\n    LUT: 0,\n    NAME: 0,\n    SCALE: 0,\n    SIZE: 0,\n    MODE: 0,\n}\n\nOPEN = {\n    # ifunc93/p3cfunc formats\n    \"0 1 image\": (\"1\", \"1\"),\n    \"L 1 image\": (\"1\", \"1\"),\n    \"Greyscale image\": (\"L\", \"L\"),\n    \"Grayscale image\": (\"L\", \"L\"),\n    \"RGB image\": (\"RGB\", \"RGB;L\"),\n    \"RLB image\": (\"RGB\", \"RLB\"),\n    \"RYB image\": (\"RGB\", \"RLB\"),\n    \"B1 image\": (\"1\", \"1\"),\n    \"B2 image\": (\"P\", \"P;2\"),\n    \"B4 image\": (\"P\", \"P;4\"),\n    \"X 24 image\": (\"RGB\", \"RGB\"),\n    \"L 32 S image\": (\"I\", \"I;32\"),\n    \"L 32 F image\": (\"F\", \"F;32\"),\n    # old p3cfunc formats\n    \"RGB3 image\": (\"RGB\", \"RGB;T\"),\n    \"RYB3 image\": (\"RGB\", \"RYB;T\"),\n    # extensions\n    \"LA image\": (\"LA\", \"LA;L\"),\n    \"PA image\": (\"LA\", \"PA;L\"),\n    \"RGBA image\": (\"RGBA\", \"RGBA;L\"),\n    \"RGBX image\": (\"RGBX\", \"RGBX;L\"),\n    \"CMYK image\": (\"CMYK\", \"CMYK;L\"),\n    \"YCC image\": (\"YCbCr\", \"YCbCr;L\"),\n}\n\n# ifunc95 extensions\nfor i in [\"8\", \"8S\", \"16\", \"16S\", \"32\", \"32F\"]:\n    OPEN[f\"L {i} image\"] = (\"F\", f\"F;{i}\")\n    OPEN[f\"L*{i} image\"] = (\"F\", f\"F;{i}\")\nfor i in [\"16\", \"16L\", \"16B\"]:\n    OPEN[f\"L {i} image\"] = (f\"I;{i}\", f\"I;{i}\")\n    OPEN[f\"L*{i} image\"] = (f\"I;{i}\", f\"I;{i}\")\nfor i in [\"32S\"]:\n    OPEN[f\"L {i} image\"] = (\"I\", f\"I;{i}\")\n    OPEN[f\"L*{i} image\"] = (\"I\", f\"I;{i}\")\nfor i in range(2, 33):\n    OPEN[f\"L*{i} image\"] = (\"F\", f\"F;{i}\")\n\n\n# --------------------------------------------------------------------\n# Read IM directory\n\nsplit = re.compile(rb\"^([A-Za-z][^:]*):[ \\t]*(.*)[ \\t]*$\")\n\n\ndef number(s):\n    try:\n        return int(s)\n    except ValueError:\n        return float(s)\n\n\n##\n# Image plugin for the IFUNC IM file format.\n\n\nclass ImImageFile(ImageFile.ImageFile):\n\n    format = \"IM\"\n    format_description = \"IFUNC Image Memory\"\n    _close_exclusive_fp_after_loading = False\n\n    def _open(self):\n\n        # Quick rejection: if there's not an LF among the first\n        # 100 bytes, this is (probably) not a text header.\n\n        if b\"\\n\" not in self.fp.read(100):\n            raise SyntaxError(\"not an IM file\")\n        self.fp.seek(0)\n\n        n = 0\n\n        # Default values\n        self.info[MODE] = \"L\"\n        self.info[SIZE] = (512, 512)\n        self.info[FRAMES] = 1\n\n        self.rawmode = \"L\"\n\n        while True:\n\n            s = self.fp.read(1)\n\n            # Some versions of IFUNC uses \\n\\r instead of \\r\\n...\n            if s == b\"\\r\":\n                continue\n\n            if not s or s == b\"\\0\" or s == b\"\\x1A\":\n                break\n\n            # FIXME: this may read whole file if not a text file\n            s = s + self.fp.readline()\n\n            if len(s) > 100:\n                raise SyntaxError(\"not an IM file\")\n\n            if s[-2:] == b\"\\r\\n\":\n                s = s[:-2]\n            elif s[-1:] == b\"\\n\":\n                s = s[:-1]\n\n            try:\n                m = split.match(s)\n            except re.error as e:\n                raise SyntaxError(\"not an IM file\") from e\n\n            if m:\n\n                k, v = m.group(1, 2)\n\n                # Don't know if this is the correct encoding,\n                # but a decent guess (I guess)\n                k = k.decode(\"latin-1\", \"replace\")\n                v = v.decode(\"latin-1\", \"replace\")\n\n                # Convert value as appropriate\n                if k in [FRAMES, SCALE, SIZE]:\n                    v = v.replace(\"*\", \",\")\n                    v = tuple(map(number, v.split(\",\")))\n                    if len(v) == 1:\n                        v = v[0]\n                elif k == MODE and v in OPEN:\n                    v, self.rawmode = OPEN[v]\n\n                # Add to dictionary. Note that COMMENT tags are\n                # combined into a list of strings.\n                if k == COMMENT:\n                    if k in self.info:\n                        self.info[k].append(v)\n                    else:\n                        self.info[k] = [v]\n                else:\n                    self.info[k] = v\n\n                if k in TAGS:\n                    n += 1\n\n            else:\n\n                raise SyntaxError(\n                    \"Syntax error in IM header: \" + s.decode(\"ascii\", \"replace\")\n                )\n\n        if not n:\n            raise SyntaxError(\"Not an IM file\")\n\n        # Basic attributes\n        self._size = self.info[SIZE]\n        self.mode = self.info[MODE]\n\n        # Skip forward to start of image data\n        while s and s[:1] != b\"\\x1A\":\n            s = self.fp.read(1)\n        if not s:\n            raise SyntaxError(\"File truncated\")\n\n        if LUT in self.info:\n            # convert lookup table to palette or lut attribute\n            palette = self.fp.read(768)\n            greyscale = 1  # greyscale palette\n            linear = 1  # linear greyscale palette\n            for i in range(256):\n                if palette[i] == palette[i + 256] == palette[i + 512]:\n                    if palette[i] != i:\n                        linear = 0\n                else:\n                    greyscale = 0\n            if self.mode in [\"L\", \"LA\", \"P\", \"PA\"]:\n                if greyscale:\n                    if not linear:\n                        self.lut = list(palette[:256])\n                else:\n                    if self.mode in [\"L\", \"P\"]:\n                        self.mode = self.rawmode = \"P\"\n                    elif self.mode in [\"LA\", \"PA\"]:\n                        self.mode = \"PA\"\n                        self.rawmode = \"PA;L\"\n                    self.palette = ImagePalette.raw(\"RGB;L\", palette)\n            elif self.mode == \"RGB\":\n                if not greyscale or not linear:\n                    self.lut = list(palette)\n\n        self.frame = 0\n\n        self.__offset = offs = self.fp.tell()\n\n        self._fp = self.fp  # FIXME: hack\n\n        if self.rawmode[:2] == \"F;\":\n\n            # ifunc95 formats\n            try:\n                # use bit decoder (if necessary)\n                bits = int(self.rawmode[2:])\n                if bits not in [8, 16, 32]:\n                    self.tile = [(\"bit\", (0, 0) + self.size, offs, (bits, 8, 3, 0, -1))]\n                    return\n            except ValueError:\n                pass\n\n        if self.rawmode in [\"RGB;T\", \"RYB;T\"]:\n            # Old LabEye/3PC files.  Would be very surprised if anyone\n            # ever stumbled upon such a file ;-)\n            size = self.size[0] * self.size[1]\n            self.tile = [\n                (\"raw\", (0, 0) + self.size, offs, (\"G\", 0, -1)),\n                (\"raw\", (0, 0) + self.size, offs + size, (\"R\", 0, -1)),\n                (\"raw\", (0, 0) + self.size, offs + 2 * size, (\"B\", 0, -1)),\n            ]\n        else:\n            # LabEye/IFUNC files\n            self.tile = [(\"raw\", (0, 0) + self.size, offs, (self.rawmode, 0, -1))]\n\n    @property\n    def n_frames(self):\n        return self.info[FRAMES]\n\n    @property\n    def is_animated(self):\n        return self.info[FRAMES] > 1\n\n    def seek(self, frame):\n        if not self._seek_check(frame):\n            return\n\n        self.frame = frame\n\n        if self.mode == \"1\":\n            bits = 1\n        else:\n            bits = 8 * len(self.mode)\n\n        size = ((self.size[0] * bits + 7) // 8) * self.size[1]\n        offs = self.__offset + frame * size\n\n        self.fp = self._fp\n\n        self.tile = [(\"raw\", (0, 0) + self.size, offs, (self.rawmode, 0, -1))]\n\n    def tell(self):\n        return self.frame\n\n\n#\n# --------------------------------------------------------------------\n# Save IM files\n\n\nSAVE = {\n    # mode: (im type, raw mode)\n    \"1\": (\"0 1\", \"1\"),\n    \"L\": (\"Greyscale\", \"L\"),\n    \"LA\": (\"LA\", \"LA;L\"),\n    \"P\": (\"Greyscale\", \"P\"),\n    \"PA\": (\"LA\", \"PA;L\"),\n    \"I\": (\"L 32S\", \"I;32S\"),\n    \"I;16\": (\"L 16\", \"I;16\"),\n    \"I;16L\": (\"L 16L\", \"I;16L\"),\n    \"I;16B\": (\"L 16B\", \"I;16B\"),\n    \"F\": (\"L 32F\", \"F;32F\"),\n    \"RGB\": (\"RGB\", \"RGB;L\"),\n    \"RGBA\": (\"RGBA\", \"RGBA;L\"),\n    \"RGBX\": (\"RGBX\", \"RGBX;L\"),\n    \"CMYK\": (\"CMYK\", \"CMYK;L\"),\n    \"YCbCr\": (\"YCC\", \"YCbCr;L\"),\n}\n\n\ndef _save(im, fp, filename):\n\n    try:\n        image_type, rawmode = SAVE[im.mode]\n    except KeyError as e:\n        raise ValueError(f\"Cannot save {im.mode} images as IM\") from e\n\n    frames = im.encoderinfo.get(\"frames\", 1)\n\n    fp.write(f\"Image type: {image_type} image\\r\\n\".encode(\"ascii\"))\n    if filename:\n        # Each line must be 100 characters or less,\n        # or: SyntaxError(\"not an IM file\")\n        # 8 characters are used for \"Name: \" and \"\\r\\n\"\n        # Keep just the filename, ditch the potentially overlong path\n        name, ext = os.path.splitext(os.path.basename(filename))\n        name = \"\".join([name[: 92 - len(ext)], ext])\n\n        fp.write(f\"Name: {name}\\r\\n\".encode(\"ascii\"))\n    fp.write((\"Image size (x*y): %d*%d\\r\\n\" % im.size).encode(\"ascii\"))\n    fp.write(f\"File size (no of images): {frames}\\r\\n\".encode(\"ascii\"))\n    if im.mode in [\"P\", \"PA\"]:\n        fp.write(b\"Lut: 1\\r\\n\")\n    fp.write(b\"\\000\" * (511 - fp.tell()) + b\"\\032\")\n    if im.mode in [\"P\", \"PA\"]:\n        fp.write(im.im.getpalette(\"RGB\", \"RGB;L\"))  # 768 bytes\n    ImageFile._save(im, fp, [(\"raw\", (0, 0) + im.size, 0, (rawmode, 0, -1))])\n\n\n#\n# --------------------------------------------------------------------\n# Registry\n\n\nImage.register_open(ImImageFile.format, ImImageFile)\nImage.register_save(ImImageFile.format, _save)\n\nImage.register_extension(ImImageFile.format, \".im\")\n"}
A user will ask you to solve a task. You should first draft your thinking process (inner monologue). Then, generate the solution.

Your response format must follow the template below:
<think>
Your thoughts or/and draft, like working through an exercise on scratch paper. Be as casual and as long as you want until you are confident to generate a correct solution.
</think>
<solution>
Final solution presented to the user.
</solution>
system
We are currently solving the following issue within our repository. Here is the issue text:
--- BEGIN ISSUE ---
[ISSUE]
**Title:** Saving IM Images with Small Palettes Fails to Pad Palette to 768 Bytes

**Description:**
When attempting to save an image with a small palette using the IM format, the palette is not correctly padded to 768 bytes. This results in the saved image file being invalid and unable to be opened, causing an `UnidentifiedImageError`.

**Example Code:**
```python
from PIL import Image

# Create an image with a small palette
im = Image.new("P", (1, 1))
colors = [0, 1, 2]
im.putpalette(colors)

# Save the image
im.save("temp.im")

# Attempt to reload the image
with Image.open("temp.im") as reloaded:
    palette = reloaded.getpalette()
    # Expect the palette to be padded with zeros to reach 768 bytes
```

**Expected Behavior:**
The saved IM file should have a palette that is padded with zeros to a total of 768 bytes, ensuring the image can be successfully reopened without errors.

**Actual Behavior:**
Opening the saved IM file raises the following error:
```
PIL.UnidentifiedImageError: cannot identify image file 'temp.im'
```
This indicates that the palette padding is insufficient, making the image file unreadable.

[/ISSUE]
--- END ISSUE ---

Below are some code segments, each from a relevant file. One or more of these files may contain bugs.

--- BEGIN FILE ---
```
### src/PIL/ImImagePlugin.py
#
# The Python Imaging Library.
# $Id$
#
# IFUNC IM file handling for PIL
#
# history:
# 1995-09-01 fl   Created.
# 1997-01-03 fl   Save palette images
# 1997-01-08 fl   Added sequence support
# 1997-01-23 fl   Added P and RGB save support
# 1997-05-31 fl   Read floating point images
# 1997-06-22 fl   Save floating point images
# 1997-08-27 fl   Read and save 1-bit images
# 1998-06-25 fl   Added support for RGB+LUT images
# 1998-07-02 fl   Added support for YCC images
# 1998-07-15 fl   Renamed offset attribute to avoid name clash
# 1998-12-29 fl   Added I;16 support
# 2001-02-17 fl   Use 're' instead of 'regex' (Python 2.1) (0.7)
# 2003-09-26 fl   Added LA/PA support
#
# Copyright (c) 1997-2003 by Secret Labs AB.
# Copyright (c) 1995-2001 by Fredrik Lundh.
#
# See the README file for information on usage and redistribution.
#


import os
import re

from . import Image, ImageFile, ImagePalette

# --------------------------------------------------------------------
# Standard tags

COMMENT = "Comment"
DATE = "Date"
EQUIPMENT = "Digitalization equipment"
FRAMES = "File size (no of images)"
LUT = "Lut"
NAME = "Name"
SCALE = "Scale (x,y)"
SIZE = "Image size (x*y)"
MODE = "Image type"

TAGS = {
    COMMENT: 0,
    DATE: 0,
    EQUIPMENT: 0,
    FRAMES: 0,
    LUT: 0,
    NAME: 0,
    SCALE: 0,
    SIZE: 0,
    MODE: 0,
}

OPEN = {
    # ifunc93/p3cfunc formats
    "0 1 image": ("1", "1"),
    "L 1 image": ("1", "1"),
    "Greyscale image": ("L", "L"),
    "Grayscale image": ("L", "L"),
    "RGB image": ("RGB", "RGB;L"),
    "RLB image": ("RGB", "RLB"),
    "RYB image": ("RGB", "RLB"),
    "B1 image": ("1", "1"),
    "B2 image": ("P", "P;2"),
    "B4 image": ("P", "P;4"),
    "X 24 image": ("RGB", "RGB"),
    "L 32 S image": ("I", "I;32"),
    "L 32 F image": ("F", "F;32"),
    # old p3cfunc formats
    "RGB3 image": ("RGB", "RGB;T"),
    "RYB3 image": ("RGB", "RYB;T"),
    # extensions
    "LA image": ("LA", "LA;L"),
    "PA image": ("LA", "PA;L"),
    "RGBA image": ("RGBA", "RGBA;L"),
    "RGBX image": ("RGBX", "RGBX;L"),
    "CMYK image": ("CMYK", "CMYK;L"),
    "YCC image": ("YCbCr", "YCbCr;L"),
}

# ifunc95 extensions
for i in ["8", "8S", "16", "16S", "32", "32F"]:
    OPEN[f"L {i} image"] = ("F", f"F;{i}")
    OPEN[f"L*{i} image"] = ("F", f"F;{i}")
for i in ["16", "16L", "16B"]:
    OPEN[f"L {i} image"] = (f"I;{i}", f"I;{i}")
    OPEN[f"L*{i} image"] = (f"I;{i}", f"I;{i}")
for i in ["32S"]:
    OPEN[f"L {i} image"] = ("I", f"I;{i}")
    OPEN[f"L*{i} image"] = ("I", f"I;{i}")
for i in range(2, 33):
    OPEN[f"L*{i} image"] = ("F", f"F;{i}")


# --------------------------------------------------------------------
# Read IM directory

split = re.compile(rb"^([A-Za-z][^:]*):[ \t]*(.*)[ \t]*$")


def number(s):
    try:
        return int(s)
    except ValueError:
        return float(s)


##
# Image plugin for the IFUNC IM file format.


class ImImageFile(ImageFile.ImageFile):

    format = "IM"
    format_description = "IFUNC Image Memory"
    _close_exclusive_fp_after_loading = False

    def _open(self):

        # Quick rejection: if there's not an LF among the first
        # 100 bytes, this is (probably) not a text header.

        if b"\n" not in self.fp.read(100):
            raise SyntaxError("not an IM file")
        self.fp.seek(0)

        n = 0

        # Default values
        self.info[MODE] = "L"
        self.info[SIZE] = (512, 512)
        self.info[FRAMES] = 1

        self.rawmode = "L"

        while True:

            s = self.fp.read(1)

            # Some versions of IFUNC uses \n\r instead of \r\n...
            if s == b"\r":
                continue

            if not s or s == b"\0" or s == b"\x1A":
                break

            # FIXME: this may read whole file if not a text file
            s = s + self.fp.readline()

            if len(s) > 100:
                raise SyntaxError("not an IM file")

            if s[-2:] == b"\r\n":
                s = s[:-2]
            elif s[-1:] == b"\n":
                s = s[:-1]

            try:
                m = split.match(s)
            except re.error as e:
                raise SyntaxError("not an IM file") from e

            if m:

                k, v = m.group(1, 2)

                # Don't know if this is the correct encoding,
                # but a decent guess (I guess)
                k = k.decode("latin-1", "replace")
                v = v.decode("latin-1", "replace")

                # Convert value as appropriate
                if k in [FRAMES, SCALE, SIZE]:
                    v = v.replace("*", ",")
                    v = tuple(map(number, v.split(",")))
                    if len(v) == 1:
                        v = v[0]
                elif k == MODE and v in OPEN:
                    v, self.rawmode = OPEN[v]

                # Add to dictionary. Note that COMMENT tags are
                # combined into a list of strings.
                if k == COMMENT:
                    if k in self.info:
                        self.info[k].append(v)
                    else:
                        self.info[k] = [v]
                else:
                    self.info[k] = v

                if k in TAGS:
                    n += 1

            else:

                raise SyntaxError(
                    "Syntax error in IM header: " + s.decode("ascii", "replace")
                )

        if not n:
            raise SyntaxError("Not an IM file")

        # Basic attributes
        self._size = self.info[SIZE]
        self.mode = self.info[MODE]

        # Skip forward to start of image data
        while s and s[:1] != b"\x1A":
            s = self.fp.read(1)
        if not s:
            raise SyntaxError("File truncated")

        if LUT in self.info:
            # convert lookup table to palette or lut attribute
            palette = self.fp.read(768)
            greyscale = 1  # greyscale palette
            linear = 1  # linear greyscale palette
            for i in range(256):
                if palette[i] == palette[i + 256] == palette[i + 512]:
                    if palette[i] != i:
                        linear = 0
                else:
                    greyscale = 0
            if self.mode in ["L", "LA", "P", "PA"]:
                if greyscale:
                    if not linear:
                        self.lut = list(palette[:256])
                else:
                    if self.mode in ["L", "P"]:
                        self.mode = self.rawmode = "P"
                    elif self.mode in ["LA", "PA"]:
                        self.mode = "PA"
                        self.rawmode = "PA;L"
                    self.palette = ImagePalette.raw("RGB;L", palette)
            elif self.mode == "RGB":
                if not greyscale or not linear:
                    self.lut = list(palette)

        self.frame = 0

        self.__offset = offs = self.fp.tell()

        self._fp = self.fp  # FIXME: hack

        if self.rawmode[:2] == "F;":

            # ifunc95 formats
            try:
                # use bit decoder (if necessary)
                bits = int(self.rawmode[2:])
                if bits not in [8, 16, 32]:
                    self.tile = [("bit", (0, 0) + self.size, offs, (bits, 8, 3, 0, -1))]
                    return
            except ValueError:
                pass

        if self.rawmode in ["RGB;T", "RYB;T"]:
            # Old LabEye/3PC files.  Would be very surprised if anyone
            # ever stumbled upon such a file ;-)
            size = self.size[0] * self.size[1]
            self.tile = [
                ("raw", (0, 0) + self.size, offs, ("G", 0, -1)),
                ("raw", (0, 0) + self.size, offs + size, ("R", 0, -1)),
                ("raw", (0, 0) + self.size, offs + 2 * size, ("B", 0, -1)),
            ]
        else:
            # LabEye/IFUNC files
            self.tile = [("raw", (0, 0) + self.size, offs, (self.rawmode, 0, -1))]

    @property
    def n_frames(self):
        return self.info[FRAMES]

    @property
    def is_animated(self):
        return self.info[FRAMES] > 1

    def seek(self, frame):
        if not self._seek_check(frame):
            return

        self.frame = frame

        if self.mode == "1":
            bits = 1
        else:
            bits = 8 * len(self.mode)

        size = ((self.size[0] * bits + 7) // 8) * self.size[1]
        offs = self.__offset + frame * size

        self.fp = self._fp

        self.tile = [("raw", (0, 0) + self.size, offs, (self.rawmode, 0, -1))]

    def tell(self):
        return self.frame


#
# --------------------------------------------------------------------
# Save IM files


SAVE = {
    # mode: (im type, raw mode)
    "1": ("0 1", "1"),
    "L": ("Greyscale", "L"),
    "LA": ("LA", "LA;L"),
    "P": ("Greyscale", "P"),
    "PA": ("LA", "PA;L"),
    "I": ("L 32S", "I;32S"),
    "I;16": ("L 16", "I;16"),
    "I;16L": ("L 16L", "I;16L"),
    "I;16B": ("L 16B", "I;16B"),
    "F": ("L 32F", "F;32F"),
    "RGB": ("RGB", "RGB;L"),
    "RGBA": ("RGBA", "RGBA;L"),
    "RGBX": ("RGBX", "RGBX;L"),
    "CMYK": ("CMYK", "CMYK;L"),
    "YCbCr": ("YCC", "YCbCr;L"),
}


def _save(im, fp, filename):

    try:
        image_type, rawmode = SAVE[im.mode]
    except KeyError as e:
        raise ValueError(f"Cannot save {im.mode} images as IM") from e

    frames = im.encoderinfo.get("frames", 1)

    fp.write(f"Image type: {image_type} image\r\n".encode("ascii"))
    if filename:
        # Each line must be 100 characters or less,
        # or: SyntaxError("not an IM file")
        # 8 characters are used for "Name: " and "\r\n"
        # Keep just the filename, ditch the potentially overlong path
        name, ext = os.path.splitext(os.path.basename(filename))
        name = "".join([name[: 92 - len(ext)], ext])

        fp.write(f"Name: {name}\r\n".encode("ascii"))
    fp.write(("Image size (x*y): %d*%d\r\n" % im.size).encode("ascii"))
    fp.write(f"File size (no of images): {frames}\r\n".encode("ascii"))
    if im.mode in ["P", "PA"]:
        fp.write(b"Lut: 1\r\n")
    fp.write(b"\000" * (511 - fp.tell()) + b"\032")
    if im.mode in ["P", "PA"]:
        fp.write(im.im.getpalette("RGB", "RGB;L"))  # 768 bytes
    ImageFile._save(im, fp, [("raw", (0, 0) + im.size, 0, (rawmode, 0, -1))])


#
# --------------------------------------------------------------------
# Registry


Image.register_open(ImImageFile.format, ImImageFile)
Image.register_save(ImImageFile.format, _save)

Image.register_extension(ImImageFile.format, ".im")

```
--- END FILE ---

Please first localize the bug based on the issue statement, and then generate *SEARCH/REPLACE* edits to fix the issue.

Every *SEARCH/REPLACE* edit must use this format:
1. The file path
2. The start of search block: <<<<<<< SEARCH
3. A contiguous chunk of lines to search for in the existing source code
4. The dividing line: =======
5. The lines to replace into the source code
6. The end of the replace block: >>>>>>> REPLACE

Here is an example:

```python
### mathweb/flask/app.py
<<<<<<< SEARCH
from flask import Flask
=======
import math
from flask import Flask
>>>>>>> REPLACE
```
</solution>

Please note that the *SEARCH/REPLACE* edit REQUIRES PROPER INDENTATION. If you would like to add the line '        print(x)', you must fully write that out, with all those spaces before the code!
Wrap each *SEARCH/REPLACE* edit in a code block as shown in the example above. If you have multiple *SEARCH/REPLACE* edits, use a separate code block for each one.
user