fix some over-broad except: clauses

sphinx/application.py

@@ -449,7 +449,7 @@ class Sphinx(object):
         try:
             if not ext_meta.get('version'):
                 ext_meta['version'] = 'unknown version'
-        except:
+        except Exception:
             ext_meta = {'version': 'unknown version'}
         self._extensions[extension] = mod
         self._extension_metadata[extension] = ext_meta

sphinx/ext/napoleon/__init__.py

@@ -371,7 +371,7 @@ def _skip_member(app, what, name, obj, skip, options):
                             cls = functools.reduce(getattr, mod_path, mod)
                         else:
                             cls = obj.__globals__[cls_path]
-                    except:
+                    except Exception:
                         cls_is_owner = False
                     else:
                         cls_is_owner = (cls and hasattr(cls, name) and

sphinx/theming.py

@@ -218,7 +218,7 @@ def load_theme_plugins():
         func_or_path = plugin.load()
         try:
             path = func_or_path()
-        except:
+        except Exception:
             path = func_or_path
 
         if isinstance(path, string_types):

sphinx/util/console.py

@@ -33,9 +33,7 @@ def get_terminal_width():
                            struct.pack('hhhh', 0, 0, 0, 0))
         height, width = struct.unpack('hhhh', call)[:2]
         terminal_width = width
-    except (SystemExit, KeyboardInterrupt):
-        raise
-    except:
+    except Exception:
         # FALLBACK
         terminal_width = int(os.environ.get('COLUMNS', 80)) - 1
     return terminal_width