https://github.com/caseyryan/flutter_multi_formatter/issues/123

Author: caseyryan

CHANGELOG.md

@@ -1,4 +1,6 @@
-## [2.10.6]
+## [2.10.9]
+- Fixed https://github.com/caseyryan/flutter_multi_formatter/issues/123
+- Fixed https://github.com/caseyryan/flutter_multi_formatter/issues/116
 - Fixed https://github.com/caseyryan/flutter_multi_formatter/issues/122 by adding triggerOnCountrySelectedInitially param to CountryDropdown
 ## [2.10.5]
 - CountryDropdown can now be filtered. If you need it to show only a 

lib/formatters/currency_input_formatter.dart

@@ -435,6 +435,15 @@ class CurrencyInputFormatter extends TextInputFormatter {
     if (input.isEmpty) return false;
     var clearedInput = input;
     if (leadingSymbol.isNotEmpty) {
+      /// allows to get read of an odd minus in front of a leading symbol
+      /// https://github.com/caseyryan/flutter_multi_formatter/issues/123
+      var sub = clearedInput.substring(
+        0,
+        clearedInput.indexOf(leadingSymbol) + 1,
+      );
+      if (sub.length > leadingSymbol.length) {
+        return true;
+      }
       clearedInput = clearedInput.replaceAll(leadingSymbol, '');
     }
     if (trailingSymbol.isNotEmpty) {

lib/formatters/formatter_utils.dart

@@ -556,7 +556,8 @@ String toCurrencyString(
   }
 
   final str = sb.toString();
-  final evenPart = addedMantissaSeparator ? str.substring(0, str.indexOf('.')) : str;
+  final evenPart =
+      addedMantissaSeparator ? str.substring(0, str.indexOf('.')) : str;
 
   int skipEvenNumbers = 0;
   String shorteningName = '';