| octal | Text.Trifecta.Parser.Token.Prim, Text.Trifecta.Parser.Token, Text.Trifecta.Parser, Text.Trifecta |
| octDigit | |
| 1 (Function) | Text.Trifecta.Parser.Char8 |
| 2 (Function) | Text.Trifecta.CharSet.Common |
| 3 (Function) | Text.Trifecta.Parser.Char, Text.Trifecta.Parser, Text.Trifecta |
| offset | Text.Trifecta.IntervalMap |
| ogham | Text.Trifecta.CharSet.Unicode.Block |
| oneOf | |
| 1 (Function) | Text.Trifecta.Parser.Char8 |
| 2 (Function) | Text.Trifecta.Parser.Char, Text.Trifecta.Parser, Text.Trifecta |
| oneOfSet | |
| 1 (Function) | Text.Trifecta.Parser.Char8 |
| 2 (Function) | Text.Trifecta.Parser.Char, Text.Trifecta.Parser, Text.Trifecta |
| op | Text.Trifecta.Language.Combinators, Text.Trifecta.Language, Text.Trifecta |
| openPunctuation | |
| 1 (Function) | Text.Trifecta.CharSet.Unicode |
| 2 (Function) | Text.Trifecta.CharSet.Unicode.Category |
| Operator | |
| 1 (Data Constructor) | Text.Trifecta.Highlight.Prim |
| 2 (Type/Class) | Text.Trifecta.Parser.Expr |
| OperatorTable | Text.Trifecta.Parser.Expr |
| opticalCharacterRecognition | Text.Trifecta.CharSet.Unicode.Block |
| option | Text.Trifecta.Parser.Combinators, Text.Trifecta.Parser, Text.Trifecta |
| optional | Text.Trifecta.Parser.Combinators, Text.Trifecta.Parser, Text.Trifecta |
| oriya | Text.Trifecta.CharSet.Unicode.Block |
| Other | Text.Trifecta.Layout.Prim |
| other | |
| 1 (Function) | Text.Trifecta.CharSet.Unicode |
| 2 (Function) | Text.Trifecta.CharSet.Unicode.Category |
| otherLetter | |
| 1 (Function) | Text.Trifecta.CharSet.Unicode |
| 2 (Function) | Text.Trifecta.CharSet.Unicode.Category |
| otherNumber | |
| 1 (Function) | Text.Trifecta.CharSet.Unicode |
| 2 (Function) | Text.Trifecta.CharSet.Unicode.Category |
| otherPunctuation | |
| 1 (Function) | Text.Trifecta.CharSet.Unicode |
| 2 (Function) | Text.Trifecta.CharSet.Unicode.Category |
| otherSymbol | |
| 1 (Function) | Text.Trifecta.CharSet.Unicode |
| 2 (Function) | Text.Trifecta.CharSet.Unicode.Category |
| overlaps | Text.Trifecta.CharSet |