Clean up.

lib/typing/columns/columns.go

@@ -4,6 +4,7 @@ import (
 	"errors"
 	"fmt"
 	"slices"
+	"strconv"
 	"strings"
 	"sync"
 
@@ -17,7 +18,7 @@ func EscapeName(name string) string {
 	_, name = stringutil.EscapeSpaces(strings.ToLower(name))
 
 	// Does the column name start with a number? If so, let's prefix `col_` to the column name.
-	if name[0] >= '0' && name[0] <= '9' {
+	if _, err := strconv.Atoi(string(name[0])); err == nil {
 		name = "col_" + name
 	}