prompt: You will be provided with a partial code base and an issue statement explaining a problem to resolve.
  <issue>
  novel gene discovery in Napari  (a.k.a. imperfect layer name incrementing)
  ## 🐛 Bug
  napari does a smart thing and adds an integer to the name of a layer if the name is already in use in the viewer. It then increments that number when another layer is added that fits the pattern.  This is great until you have layer names that end in numbers 
  ![Screenshot from 2019-10-13 13-28-55](https://user-images.githubusercontent.com/6773896/66722077-6379b300-edbe-11e9-91e3-37784cc7aa70.png)
  which in this case results in different names that are sometimes real genes and sometimes not.
  
  ## To Reproduce
  
  Steps to reproduce the behavior:
  ```
  v = napari.Viewer()
  for i in range(3):
      v.add_points(1000*np.random.rand(10,2), name = "no_problem")
  for i in range(3):
      v.add_points(1000*np.random.rand(10,2), name = "problem:GAD1")
  ```
  
  ## Expected behavior
  consistent use of a space or other character to separate the auto-increment integer from the original string
  
  
  </issue>
  <code>
  [start of napari/util/naming.py]
  1 """Automatically generate names.
  2 """
  3 import re
  4 from .misc import formatdoc
  5 
  6 
  7 sep = ' '
  8 start = 1
  9 
  10 numbered_patt = re.compile(r'(?<!\d)(?:\d+|)$')
  11 
  12 
  13 def _inc_name_count_sub(match):
  14     count = match.group(0)
  15 
  16     try:
  17         count = int(count)
  18     except ValueError:  # not an int
  19         count = f'{sep}{start}'
  20     else:
  21         count = f'{count + 1}'
  22 
  23     return count
  24 
  25 
  26 @formatdoc
  27 def inc_name_count(name):
  28     """Increase a name's count matching `{numbered_patt}` by ``1``.
  29 
  30     If the name is not already numbered, append '{sep}{start}'.
  31 
  32     Parameters
  33     ----------
  34     name : str
  35         Original name.
  36 
  37     Returns
  38     -------
  39     incremented_name : str
  40         Numbered name incremented by ``1``.
  41     """
  42     return numbered_patt.sub(_inc_name_count_sub, name)
  43
  [end of napari/util/naming.py]
  </code>
  
  I need you to solve this issue by generating a single patch file that I can apply directly to this repository using git apply. Please respond with a single patch file in the following format.
  <patch>
  diff --git a/file.py b/file.py
  --- a/file.py
  +++ b/file.py
  @@ -1,27 +1,35 @@
   def euclidean(a, b):
  -    while b:
  -        a, b = b, a % b
  -    return a
  +    if b == 0:
  +        return a
  +    return euclidean(b, a % b)
   
   
   def bresenham(x0, y0, x1, y1):
       points = []
       dx = abs(x1 - x0)
       dy = abs(y1 - y0)
  -    sx = 1 if x0 < x1 else -1
  -    sy = 1 if y0 < y1 else -1
  -    err = dx - dy
  +    x, y = x0, y0
  +    sx = -1 if x0 > x1 else 1
  +    sy = -1 if y0 > y1 else 1
   
  -    while True:
  -        points.append((x0, y0))
  -        if x0 == x1 and y0 == y1:
  -            break
  -        e2 = 2 * err
  -        if e2 > -dy:
  -            err -= dy
  -            x0 += sx
  -        if e2 < dx:
  -            err += dx
  -            y0 += sy
  +    if dx > dy:
  +        err = dx / 2.0
  +        while x != x1:
  +            points.append((x, y))
  +            err -= dy
  +            if err < 0:
  +                y += sy
  +                err += dx
  +            x += sx
  +    else:
  +        err = dy / 2.0
  +        while y != y1:
  +            points.append((x, y))
  +            err -= dx
  +            if err < 0:
  +                x += sx
  +                err += dy
  +            y += sy
  +
  +    points.append((x, y))
       return points
  
  </patch>
golden_diff: diff --git a/napari/util/naming.py b/napari/util/naming.py
  --- a/napari/util/naming.py
  +++ b/napari/util/naming.py
  @@ -7,7 +7,9 @@
   sep = ' '
   start = 1
   
  -numbered_patt = re.compile(r'(?<!\d)(?:\d+|)$')
  +# Match integer between square brackets at end of string if after space
  +# or at beginning of string or just match end of string
  +numbered_patt = re.compile(r'((?<=\A\[)|(?<=\s\[))(?:\d+|)(?=\]$)|$')
   
   
   def _inc_name_count_sub(match):
  @@ -16,7 +18,7 @@
       try:
           count = int(count)
       except ValueError:  # not an int
  -        count = f'{sep}{start}'
  +        count = f'{sep}[{start}]'
       else:
           count = f'{count + 1}'
   
  @@ -27,7 +29,7 @@
   def inc_name_count(name):
       """Increase a name's count matching `{numbered_patt}` by ``1``.
   
  -    If the name is not already numbered, append '{sep}{start}'.
  +    If the name is not already numbered, append '{sep}[{start}]'.
   
       Parameters
       ----------
  @@ -39,4 +41,4 @@
       incremented_name : str
           Numbered name incremented by ``1``.
       """
  -    return numbered_patt.sub(_inc_name_count_sub, name)
  +    return numbered_patt.sub(_inc_name_count_sub, name, count=1)
  
verification_info: {"golden_diff": "diff --git a/napari/util/naming.py b/napari/util/naming.py\n--- a/napari/util/naming.py\n+++ b/napari/util/naming.py\n@@ -7,7 +7,9 @@\n sep = ' '\n start = 1\n \n-numbered_patt = re.compile(r'(?<!\\d)(?:\\d+|)$')\n+# Match integer between square brackets at end of string if after space\n+# or at beginning of string or just match end of string\n+numbered_patt = re.compile(r'((?<=\\A\\[)|(?<=\\s\\[))(?:\\d+|)(?=\\]$)|$')\n \n \n def _inc_name_count_sub(match):\n@@ -16,7 +18,7 @@\n     try:\n         count = int(count)\n     except ValueError:  # not an int\n-        count = f'{sep}{start}'\n+        count = f'{sep}[{start}]'\n     else:\n         count = f'{count + 1}'\n \n@@ -27,7 +29,7 @@\n def inc_name_count(name):\n     \"\"\"Increase a name's count matching `{numbered_patt}` by ``1``.\n \n-    If the name is not already numbered, append '{sep}{start}'.\n+    If the name is not already numbered, append '{sep}[{start}]'.\n \n     Parameters\n     ----------\n@@ -39,4 +41,4 @@\n     incremented_name : str\n         Numbered name incremented by ``1``.\n     \"\"\"\n-    return numbered_patt.sub(_inc_name_count_sub, name)\n+    return numbered_patt.sub(_inc_name_count_sub, name, count=1)\n", "issue": "novel gene discovery in Napari  (a.k.a. imperfect layer name incrementing)\n## \ud83d\udc1b Bug\r\nnapari does a smart thing and adds an integer to the name of a layer if the name is already in use in the viewer. It then increments that number when another layer is added that fits the pattern.  This is great until you have layer names that end in numbers \r\n![Screenshot from 2019-10-13 13-28-55](https://user-images.githubusercontent.com/6773896/66722077-6379b300-edbe-11e9-91e3-37784cc7aa70.png)\r\nwhich in this case results in different names that are sometimes real genes and sometimes not.\r\n\r\n## To Reproduce\r\n\r\nSteps to reproduce the behavior:\r\n```\r\nv = napari.Viewer()\r\nfor i in range(3):\r\n    v.add_points(1000*np.random.rand(10,2), name = \"no_problem\")\r\nfor i in range(3):\r\n    v.add_points(1000*np.random.rand(10,2), name = \"problem:GAD1\")\r\n```\r\n\r\n## Expected behavior\r\nconsistent use of a space or other character to separate the auto-increment integer from the original string\r\n\n", "before_files": [{"content": "\"\"\"Automatically generate names.\n\"\"\"\nimport re\nfrom .misc import formatdoc\n\n\nsep = ' '\nstart = 1\n\nnumbered_patt = re.compile(r'(?<!\\d)(?:\\d+|)$')\n\n\ndef _inc_name_count_sub(match):\n    count = match.group(0)\n\n    try:\n        count = int(count)\n    except ValueError:  # not an int\n        count = f'{sep}{start}'\n    else:\n        count = f'{count + 1}'\n\n    return count\n\n\n@formatdoc\ndef inc_name_count(name):\n    \"\"\"Increase a name's count matching `{numbered_patt}` by ``1``.\n\n    If the name is not already numbered, append '{sep}{start}'.\n\n    Parameters\n    ----------\n    name : str\n        Original name.\n\n    Returns\n    -------\n    incremented_name : str\n        Numbered name incremented by ``1``.\n    \"\"\"\n    return numbered_patt.sub(_inc_name_count_sub, name)\n", "path": "napari/util/naming.py"}]}