Don't override .NET format string G

CodeGen/Generators/UnitsNetGen/QuantityGenerator.cs

@@ -1120,7 +1120,7 @@ private void GenerateToString()
         /// <returns>String representation.</returns>
         public override string ToString()
         {{
-            return ToString(""g"");
+            return ToString(null, null);
         }}
 
         /// <summary>
@@ -1130,7 +1130,7 @@ public override string ToString()
         /// <param name=""provider"">Format to use for localization and number formatting. Defaults to <see cref=""CultureInfo.CurrentCulture"" /> if null.</param>
         public string ToString(IFormatProvider? provider)
         {{
-            return ToString(""g"", provider);
+            return ToString(null, provider);
         }}
 
         /// <inheritdoc cref=""QuantityFormatter.Format{{TUnitType}}(IQuantity{{TUnitType}}, string, IFormatProvider)""/>
@@ -1141,7 +1141,7 @@ public string ToString(IFormatProvider? provider)
         /// <returns>The string representation.</returns>
         public string ToString(string? format)
         {{
-            return ToString(format, CultureInfo.CurrentCulture);
+            return ToString(format, null);
         }}
 
         /// <inheritdoc cref=""QuantityFormatter.Format{{TUnitType}}(IQuantity{{TUnitType}}, string, IFormatProvider)""/>
@@ -1227,7 +1227,7 @@ float IConvertible.ToSingle(IFormatProvider? provider)
 
         string IConvertible.ToString(IFormatProvider? provider)
         {{
-            return ToString(""g"", provider);
+            return ToString(null, provider);
         }}
 
         object IConvertible.ToType(Type conversionType, IFormatProvider? provider)

CodeGen/Generators/UnitsNetGen/UnitTestBaseClassGenerator.cs

@@ -663,7 +663,7 @@ public void ToString_NullFormat_DefaultsToGeneralFormat(string cultureName)
                 ? null
                 : CultureInfo.GetCultureInfo(cultureName);
 
-            Assert.Equal(quantity.ToString(""g"", formatProvider), quantity.ToString(null, formatProvider));
+            Assert.Equal(quantity.ToString(""G"", formatProvider), quantity.ToString(null, formatProvider));
         }}
 
         [Theory]

README.md

@@ -84,7 +84,7 @@ RotationalSpeed r = Angle.FromDegrees(90) / TimeSpan.FromSeconds(2);
 
 ### <a name="culture"></a>Culture and Localization
 
-The culture for abbreviations defaults to Thread.CurrentCulture and falls back to US English if not defined. Thread.CurrentCulture affects number formatting unless a custom culture is specified. The relevant methods are:
+The culture for abbreviations defaults to Thread.CurrentCulture and falls back to US English (en-US) if not defined. Thread.CurrentCulture affects number formatting unless a custom culture is specified. The relevant methods are:
 
 * ToString()
 * GetAbbreviation()
@@ -95,7 +95,7 @@ var usEnglish = new CultureInfo("en-US");
 var russian = new CultureInfo("ru-RU");
 var oneKg = Mass.FromKilograms(1);
 
-// ToString() uses CurrentCulture for abbreviation language number formatting. This is consistent with the behavior of the .NET Framework,
+// ToString() uses CurrentCulture for abbreviation language number formatting. This is consistent with the behavior of .NET,
 // where DateTime.ToString() uses CurrentCulture for the whole string, likely because mixing an english date format with a russian month name might be confusing.
 Thread.CurrentThread.CurrentCulture = russian;
 string kgRu = oneKg.ToString(); // "1 кг"