diff --git a/internal/pkg/parsing/lexer/lexer.go b/internal/pkg/parsing/lexer/lexer.go
index 7894220c4e..1cfd61a36b 100644
--- a/internal/pkg/parsing/lexer/lexer.go
+++ b/internal/pkg/parsing/lexer/lexer.go
@@ -12,7 +12,7 @@ import (
 const (
 	NoState    = -1
 	NumStates  = 328
-	NumSymbols = 579
+	NumSymbols = 580
 )
 
 type Lexer struct {
@@ -702,10 +702,11 @@ Lexer symbols:
 570: 'A'-'Z'
 571: 'a'-'z'
 572: '0'-'9'
-573: \u0100-\U0010ffff
-574: 'A'-'Z'
-575: 'a'-'z'
-576: '0'-'9'
-577: \u0100-\U0010ffff
-578: .
+573: \u00a0-\u00ff
+574: \u0100-\U0010ffff
+575: 'A'-'Z'
+576: 'a'-'z'
+577: '0'-'9'
+578: \u0100-\U0010ffff
+579: .
 */
diff --git a/internal/pkg/parsing/lexer/transitiontable.go b/internal/pkg/parsing/lexer/transitiontable.go
index 08f2fd9302..8f0b772535 100644
--- a/internal/pkg/parsing/lexer/transitiontable.go
+++ b/internal/pkg/parsing/lexer/transitiontable.go
@@ -241,6 +241,8 @@ var TransTab = TransitionTable{
 			return 57
 		case r == 126: // ['~','~']
 			return 57
+		case 160 <= r && r <= 255: // [\u00a0,\u00ff]
+			return 57
 		case 256 <= r && r <= 1114111: // [\u0100,\U0010ffff]
 			return 57
 		}
@@ -1212,6 +1214,8 @@ var TransTab = TransitionTable{
 			return 57
 		case r == 126: // ['~','~']
 			return 57
+		case 160 <= r && r <= 255: // [\u00a0,\u00ff]
+			return 57
 		case 256 <= r && r <= 1114111: // [\u0100,\U0010ffff]
 			return 57
 		}
@@ -2980,6 +2984,8 @@ var TransTab = TransitionTable{
 			return 57
 		case r == 126: // ['~','~']
 			return 57
+		case 160 <= r && r <= 255: // [\u00a0,\u00ff]
+			return 57
 		case 256 <= r && r <= 1114111: // [\u0100,\U0010ffff]
 			return 57
 		}
@@ -4410,6 +4416,8 @@ var TransTab = TransitionTable{
 			return 57
 		case r == 126: // ['~','~']
 			return 57
+		case 160 <= r && r <= 255: // [\u00a0,\u00ff]
+			return 57
 		case 256 <= r && r <= 1114111: // [\u0100,\U0010ffff]
 			return 57
 		}
diff --git a/internal/pkg/parsing/mlr.bnf b/internal/pkg/parsing/mlr.bnf
index baee22c5ca..f2b32fe2ce 100644
--- a/internal/pkg/parsing/mlr.bnf
+++ b/internal/pkg/parsing/mlr.bnf
@@ -54,7 +54,7 @@
 // CHARACTER CLASSES
 // ----------------------------------------------------------------
 
-_letter : 'a'-'z' | 'A'-'Z' | '\u00a0'-'\u00ff' | '\u0100'-'\U0010FFFF';
+_letter : 'a'-'z' | 'A'-'Z' | '\u00a0'-'\u00ff' | '\u0100'-'\U0010ffff';
 _decdig : '0'-'9' ;
 _hexdig : '0'-'9' | 'a'-'f' | 'A'-'F';
 _octdig : '0'-'7' ;
@@ -95,7 +95,8 @@ _string_literal_element
   | ( '\\' '*' )
   | ( '\\' '0' ) | ( '\\' '1' ) | ( '\\' '2' ) | ( '\\' '3' ) | ( '\\' '4' )
   | ( '\\' '5' ) | ( '\\' '6' ) | ( '\\' '7' ) | ( '\\' '8' ) | ( '\\' '9' )
-  | '\u0100'-'\U0010FFFF'
+  | '\u00a0'-'\u00ff'
+  | '\u0100'-'\U0010ffff'
 ;
 string_literal : '"' {_string_literal_element} '"' ;
 
diff --git a/todo.txt b/todo.txt
index a84c57b2a1..67fb7ba158 100644
--- a/todo.txt
+++ b/todo.txt
@@ -7,6 +7,7 @@ RELEASES
     https://github.com/johnkerl/miller/issues?q=is%3Aissue+is%3Aopen+label%3Aneeds-documentation
   o fmt/unfmt/regex doc
   o FAQ/examples reorg
+  ? ??? for doc-string contents search -- ? & mlr help namegoeshere foo ...
 
   k strptime/882
   k fmtifnum, & recursive fmtnum/fmtifnum