2 files changed, 103 insertions, 1 deletions

diff --git a/src/WixToolset.Converters/Wix3Converter.cs b/src/WixToolset.Converters/Wix3Converter.cs
index 66ccd9d3..559e5368 100644
--- a/src/WixToolset.Converters/Wix3Converter.cs
+++ b/src/WixToolset.Converters/Wix3Converter.cs
@@ -26,6 +26,7 @@ namespace WixToolset.Converters
         private static readonly XNamespace WixNamespace = "http://wixtoolset.org/schemas/v4/wxs";
         private static readonly XNamespace WixUtilNamespace = "http://wixtoolset.org/schemas/v4/wxs/util";
 
+        private static readonly XName ColumnElementName = WixNamespace + "Column";
         private static readonly XName CreateFolderElementName = WixNamespace + "CreateFolder";
         private static readonly XName CustomTableElementName = WixNamespace + "CustomTable";
         private static readonly XName DirectoryElementName = WixNamespace + "Directory";
@@ -82,6 +83,7 @@ namespace WixToolset.Converters
         {
             this.ConvertElementMapping = new Dictionary<XName, Action<XElement>>
             {
+                { Wix3Converter.ColumnElementName, this.ConvertColumnElement },
                 { Wix3Converter.CustomTableElementName, this.ConvertCustomTableElement },
                 { Wix3Converter.DirectoryElementName, this.ConvertDirectoryElement },
                 { Wix3Converter.FileElementName, this.ConvertFileElement },
@@ -298,6 +300,31 @@ namespace WixToolset.Converters
             }
         }
 
+        private void ConvertColumnElement(XElement element)
+        {
+            var category = element.Attribute("Category");
+            if (category != null)
+            {
+                var camelCaseValue = LowercaseFirstChar(category.Value);
+                if (category.Value != camelCaseValue &&
+                    this.OnError(ConverterTestType.ColumnCategoryCamelCase, element, "The CustomTable Category attribute contains an incorrectly cased '{0}' value. Lowercase the first character instead.", category.Name))
+                {
+                    category.Value = camelCaseValue;
+                }
+            }
+
+            var modularization = element.Attribute("Modularize");
+            if (modularization != null)
+            {
+                var camelCaseValue = LowercaseFirstChar(modularization.Value);
+                if (category.Value != camelCaseValue &&
+                    this.OnError(ConverterTestType.ColumnModularizeCamelCase, element, "The CustomTable Modularize attribute contains an incorrectly cased '{0}' value. Lowercase the first character instead.", modularization.Name))
+                {
+                    modularization.Value = camelCaseValue;
+                }
+            }
+        }
+
         private void ConvertCustomTableElement(XElement element)
         {
             var bootstrapperApplicationData = element.Attribute("BootstrapperApplicationData");
@@ -583,7 +610,7 @@ namespace WixToolset.Converters
         /// <remarks>This is duplicated from WiX's Common class.</remarks>
         private static string GetIdentifierFromName(string name)
         {
-            string result = IllegalIdentifierCharacters.Replace(name, "_"); // replace illegal characters with "_".
+            var result = IllegalIdentifierCharacters.Replace(name, "_"); // replace illegal characters with "_".
 
             // MSI identifiers must begin with an alphabetic character or an
             // underscore. Prefix all other values with an underscore.
@@ -595,6 +622,21 @@ namespace WixToolset.Converters
             return result;
         }
 
+        private static string LowercaseFirstChar(string value)
+        {
+            if (!String.IsNullOrEmpty(value))
+            {
+                var c = Char.ToLowerInvariant(value[0]);
+                if (c != value[0])
+                {
+                    var remainder = value.Length > 1 ? value.Substring(1) : String.Empty;
+                    return c + remainder;
+                }
+            }
+
+            return value;
+        }
+
         /// <summary>
         /// Converter test types.  These are used to condition error messages down to warnings.
         /// </summary>
@@ -699,6 +741,16 @@ namespace WixToolset.Converters
             /// Inheritable is new and is now defaulted to 'yes' which is a change in behavior for all but children of CreateFolder.
             /// </summary>
             AssignPermissionExInheritable,
+
+            /// <summary>
+            /// Column element's Category attribute is camel-case.
+            /// </summary>
+            ColumnCategoryCamelCase,
+
+            /// <summary>
+            /// Column element's Modularize attribute is camel-case.
+            /// </summary>
+            ColumnModularizeCamelCase,
         }
     }
 }
diff --git a/src/test/WixToolsetTest.Converters/CustomTableFixture.cs b/src/test/WixToolsetTest.Converters/CustomTableFixture.cs
new file mode 100644
index 00000000..5a572294
--- /dev/null
+++ b/src/test/WixToolsetTest.Converters/CustomTableFixture.cs
@@ -0,0 +1,50 @@
+// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
+
+namespace WixToolsetTest.Converters
+{
+    using System;
+    using System.Xml.Linq;
+    using WixToolset.Converters;
+    using WixToolsetTest.Converters.Mocks;
+    using Xunit;
+
+    public class CustomTableFixture : BaseConverterFixture
+    {
+        [Fact]
+        public void FixCustomTableCategoryAndModularization()
+        {
+            var parse = String.Join(Environment.NewLine,
+                "<?xml version=\"1.0\" encoding=\"utf-16\"?>",
+                "<Wix xmlns='http://schemas.microsoft.com/wix/2006/wi'>",
+                "  <Fragment>",
+                "    <CustomTable Id='Custom1'>",
+                "      <Column Id='Column1' Type='string' Category='Text' Modularize='Column' />",
+                "    </CustomTable>",
+                "  </Fragment>",
+                "</Wix>");
+
+            var expected = new[]
+            {
+                "<?xml version=\"1.0\" encoding=\"utf-16\"?>",
+                "<Wix xmlns=\"http://wixtoolset.org/schemas/v4/wxs\">",
+                "  <Fragment>",
+                "    <CustomTable Id=\"Custom1\">",
+                "      <Column Id=\"Column1\" Type=\"string\" Category=\"text\" Modularize=\"column\" />",
+                "    </CustomTable>",
+                "  </Fragment>",
+                "</Wix>"
+            };
+
+            var document = XDocument.Parse(parse, LoadOptions.PreserveWhitespace | LoadOptions.SetLineInfo);
+
+            var messaging = new MockMessaging();
+            var converter = new Wix3Converter(messaging, 2, null, null);
+
+            var errors = converter.ConvertDocument(document);
+            Assert.Equal(4, errors);
+
+            var actualLines = UnformattedDocumentLines(document);
+            CompareLineByLine(expected, actualLines);
+        }
+    }
+}