| Background | Text.Trifecta |
| background | Text.Trifecta |
| BadInput | Text.Trifecta.Highlight.Prim |
| basicLatin | Text.Trifecta.CharSet.Unicode.Block |
| Bell | Text.Trifecta |
| bengali | Text.Trifecta.CharSet.Unicode.Block |
| between | Text.Trifecta.Parser.Combinators, Text.Trifecta.Parser, Text.Trifecta |
| black | Text.Trifecta |
| blank | |
| 1 (Function) | Text.Trifecta.CharSet.Posix.Ascii |
| 2 (Function) | Text.Trifecta.CharSet.Posix.Unicode |
| Blink | Text.Trifecta |
| blink | Text.Trifecta |
| Block | |
| 1 (Type/Class) | Text.Trifecta.CharSet.Unicode.Block |
| 2 (Data Constructor) | Text.Trifecta.CharSet.Unicode.Block |
| blockCharSet | Text.Trifecta.CharSet.Unicode.Block |
| blockElements | Text.Trifecta.CharSet.Unicode.Block |
| blockName | Text.Trifecta.CharSet.Unicode.Block |
| blocks | Text.Trifecta.CharSet.Unicode.Block |
| blue | Text.Trifecta |
| Bold | Text.Trifecta |
| bold | Text.Trifecta |
| bopomofo | Text.Trifecta.CharSet.Unicode.Block |
| bopomofoExtended | Text.Trifecta.CharSet.Unicode.Block |
| boxDrawing | Text.Trifecta.CharSet.Unicode.Block |
| braces | Text.Trifecta.Parser.Token.Combinators, Text.Trifecta.Parser.Token, Text.Trifecta.Parser, Text.Trifecta |
| brackets | Text.Trifecta.Parser.Token.Combinators, Text.Trifecta.Parser.Token, Text.Trifecta.Parser, Text.Trifecta |
| braillePatterns | Text.Trifecta.CharSet.Unicode.Block |
| buhid | Text.Trifecta.CharSet.Unicode.Block |
| build | Text.Trifecta.CharSet |
| buildExpressionParser | Text.Trifecta.Parser.Expr |
| buildSomeSpaceParser | Text.Trifecta.Parser.Token.Style |
| bytes | Text.Trifecta.Rope.Bytes, Text.Trifecta.Rope, Text.Trifecta |
| ByteSet | |
| 1 (Type/Class) | Text.Trifecta.Util.ByteSet |
| 2 (Data Constructor) | Text.Trifecta.Util.ByteSet |
| byteString | |
| 1 (Function) | Text.Trifecta.Parser.Char8 |
| 2 (Function) | Text.Trifecta.Parser.Char, Text.Trifecta.Parser, Text.Trifecta |