| oappend | Darcs.UI.Options.Core, Darcs.UI.Options |
| Object | Darcs.Patch.Prim.FileUUID.ObjectMap, Darcs.Patch.Prim.FileUUID.Core |
| ObjectMap | |
| 1 (Type/Class) | Darcs.Patch.Prim.FileUUID.ObjectMap, Darcs.Patch.Prim.FileUUID.Apply |
| 2 (Data Constructor) | Darcs.Patch.Prim.FileUUID.ObjectMap, Darcs.Patch.Prim.FileUUID.Apply |
| obliterate | Darcs.UI.Commands.Unrecord |
| ocheck | Darcs.UI.Options.Core, Darcs.UI.Options |
| odd | Darcs.Prelude |
| odesc | Darcs.UI.Options.Core, Darcs.UI.Options |
| oempty | Darcs.UI.Options.Core, Darcs.UI.Options |
| oid | Darcs.UI.Options.Core, Darcs.UI.Options |
| oimap | Darcs.UI.Options.Core, Darcs.UI.Options |
| Okay | Darcs.Patch.Conflict |
| okayHash | Darcs.Repository.Cache |
| OldFormat | Darcs.Patch.Format |
| oldRepoFailMsg | Darcs.Repository.Old |
| Once | |
| 1 (Data Constructor) | Darcs.UI.Options.Flags |
| 2 (Data Constructor) | Darcs.UI.Options.All |
| OneHash | |
| 1 (Data Constructor) | Darcs.UI.Options.Flags, Darcs.UI.Flags |
| 2 (Data Constructor) | Darcs.Patch.Match, Darcs.UI.Options.Matching, Darcs.UI.Options.All |
| OnePatch | |
| 1 (Data Constructor) | Darcs.UI.Options.Flags, Darcs.UI.Flags |
| 2 (Data Constructor) | Darcs.Patch.Match, Darcs.UI.Options.Matching, Darcs.UI.Options.All |
| OnePattern | |
| 1 (Data Constructor) | Darcs.UI.Options.Flags, Darcs.UI.Flags |
| 2 (Data Constructor) | Darcs.Patch.Match, Darcs.UI.Options.Matching, Darcs.UI.Options.All |
| OneTag | |
| 1 (Data Constructor) | Darcs.UI.Options.Flags |
| 2 (Data Constructor) | Darcs.Patch.Match, Darcs.UI.Options.Matching, Darcs.UI.Options.All |
| OnlyChangesToFiles | Darcs.UI.Options.Flags |
| onlyToFiles | Darcs.UI.Options.All, Darcs.UI.Flags |
| onormalise | Darcs.UI.Options.Core, Darcs.UI.Options |
| oparse | Darcs.UI.Options.Core, Darcs.UI.Options |
| OperationTimeout | Darcs.Util.Download.Request, Darcs.Util.Download |
| optAbsPathArg | Darcs.UI.Options.Util |
| optDescr | Darcs.UI.Options |
| optimize | Darcs.UI.Commands.Optimize |
| optimizePatchIndex | Darcs.UI.Options.All |
| option | Darcs.Patch.ReadMonads |
| optionsMarkdown | Darcs.UI.Options.Markdown |
| OptSpec | |
| 1 (Type/Class) | Darcs.UI.Options.Core, Darcs.UI.Options |
| 2 (Data Constructor) | Darcs.UI.Options.Core, Darcs.UI.Options |
| optStrArg | Darcs.UI.Options.Util |
| or | Darcs.Prelude |
| orClauses | Darcs.Util.English |
| Ord | Darcs.Prelude |
| Ordering | Darcs.Prelude |
| Origin | Darcs.Patch.Set |
| osxCacheDir | Darcs.Util.File |
| otherwise | Darcs.Prelude |
| ounparse | Darcs.UI.Options.Core, Darcs.UI.Options |
| Output | |
| 1 (Data Constructor) | Darcs.UI.Options.Flags |
| 2 (Type/Class) | Darcs.UI.Options.All |
| 3 (Data Constructor) | Darcs.UI.Options.All |
| output | Darcs.UI.Options.All |
| OutputAutoName | |
| 1 (Data Constructor) | Darcs.UI.Options.Flags |
| 2 (Data Constructor) | Darcs.UI.Options.All |
| overlay | Darcs.Util.Tree |
| ownName | Darcs.Util.Path |