Work around the OS X security cli setting the return code to 1 if no …

…trust settings are available to dump

package_control/ca_certs.py

@@ -346,7 +346,10 @@ def _osx_get_distrusted_certs(settings):
     """
 
     args = ['/usr/bin/security', 'dump-trust-settings', '-d']
-    result = Cli(None, settings.get('debug')).execute(args, '/usr/bin')
+    result = Cli(None, settings.get('debug')).execute(args, '/usr/bin', ignore_errors='No Trust Settings were found')
+
+    if not result:
+        return []
 
     distrusted_certs = []
     cert_name = None

package_control/cmd.py

@@ -75,7 +75,7 @@ def __init__(self, binary_locations, debug):
         self.binary_locations = binary_locations
         self.debug = debug
 
-    def execute(self, args, cwd, input=None, encoding='utf-8', meaningful_output=False):
+    def execute(self, args, cwd, input=None, encoding='utf-8', meaningful_output=False, ignore_errors=None):
         """
         Creates a subprocess with the executable/args
 
@@ -92,6 +92,9 @@ def execute(self, args, cwd, input=None, encoding='utf-8', meaningful_output=Fal
             If the output from the command is possibly meaningful and should
             be displayed if in debug mode
 
+        :param ignore_errors:
+            A regex of errors to ignore
+
         :return: A string of the executable output
         """
 
@@ -164,18 +167,19 @@ def kill_proc():
             output = output.replace('\r\n', '\n').rstrip(' \n\r')
 
             if proc.returncode != 0:
-                show_error(
-                    u'''
-                    Error executing: %s
-
-                    %s
-
-                    VCS-based packages can be ignored with the
-                    "ignore_vcs_packages" setting.
-                    ''',
-                    (create_cmd(args), output)
-                )
-                return False
+                if not ignore_errors or re.search(ignore_errors, output) is None:
+                    show_error(
+                        u'''
+                        Error executing: %s
+
+                        %s
+
+                        VCS-based packages can be ignored with the
+                        "ignore_vcs_packages" setting.
+                        ''',
+                        (create_cmd(args), output)
+                    )
+                    return False
 
             if meaningful_output and self.debug and len(output) > 0:
                 console_write(output, indent='  ', prefix=False)