Use Config class to write config during init_project.

changelog.txt

@@ -34,6 +34,7 @@ Fixed
 +++++
 
  - Attempting to create a linked view for a Project on Windows now raises an informative error message.
+ - Project configuration is initialized using ConfigObj, allowing the configuration to include commas and special characters (#251, #252).
 
 Deprecated
 ++++++++++

signac/contrib/project.py

@@ -24,7 +24,7 @@
 from ..core.jsondict import JSONDict
 from ..core.h5store import H5StoreManager
 from .collection import Collection
-from ..common.config import load_config, Config
+from ..common.config import get_config, load_config, Config
 from ..sync import sync_projects
 from .job import Job
 from .hashing import calc_id
@@ -1461,10 +1461,11 @@ def init_project(cls, name, root=None, workspace=None, make_dir=True):
             fn_config = os.path.join(root, 'signac.rc')
             if make_dir:
                 _mkdir_p(os.path.dirname(fn_config))
-            with open(fn_config, 'a') as config_file:
-                config_file.write('project={}\n'.format(name))
-                if workspace is not None:
-                    config_file.write('workspace_dir={}\n'.format(workspace))
+            config = get_config(fn_config)
+            config['project'] = name
+            if workspace is not None:
+                config['workspace_dir'] = workspace
+            config.write()
             project = cls.get_project(root=root)
             assert project.get_id() == str(name)
             return project

tests/test_project.py

@@ -9,6 +9,7 @@
 import itertools
 import json
 import pickle
+import string
 from tarfile import TarFile
 from zipfile import ZipFile
 from tempfile import TemporaryDirectory
@@ -1794,6 +1795,14 @@ def test_get_project(self):
         self.assertEqual(project.workspace(), os.path.join(root, 'workspace'))
         self.assertEqual(project.root_directory(), root)
 
+    def test_get_project_all_printable_characters(self):
+        root = self._tmp_dir.name
+        with self.assertRaises(LookupError):
+            signac.get_project(root=root)
+        project_name = 'testproject' + string.printable
+        project = signac.init_project(name=project_name, root=root)
+        self.assertEqual(project.get_id(), project_name)
+
     def test_get_project_non_local(self):
         root = self._tmp_dir.name
         subdir = os.path.join(root, 'subdir')