Change whitespace characters to space (#1231)

* Change whitepace characters to space

* Only change end-of-line chars

Co-authored-by: Andrew Wang <waan@microsoft.com>

Author: paulmaybee

src/MICore/CommandFactories/MICommandFactory.cs

@@ -332,7 +332,7 @@ public virtual Task<bool> SetStepFiltering(bool enabled)
         // Calls to VarCreate will change the current debugger thread and frame selection to what is passed in. This is because it needs to be queried in the context of a thread/frame id.
         public virtual async Task<Results> VarCreate(string expression, int threadId, uint frameLevel, enum_EVALFLAGS dwFlags, ResultClass resultClass = ResultClass.done)
         {
-            string quoteEscapedExpression = EscapeQuotes(expression);
+            string quoteEscapedExpression = EscapeQuotes(HandleInvalidChars(expression));
             string command = string.Format(CultureInfo.InvariantCulture, "-var-create - * \"{0}\"", quoteEscapedExpression);
             Results results = await ThreadFrameCmdAsync(command, resultClass, threadId, frameLevel);
 
@@ -366,7 +366,8 @@ public async Task<Results> VarEvaluateExpression(string variableName, ResultClas
 
         public virtual async Task<string> VarAssign(string variableName, string expression, int threadId, uint frameLevel)
         {
-            string command = string.Format(CultureInfo.InvariantCulture, "-var-assign {0} \"{1}\"", variableName, expression);
+            string quoteEscapedExpression = EscapeQuotes(HandleInvalidChars(expression));
+            string command = string.Format(CultureInfo.InvariantCulture, "-var-assign {0} \"{1}\"", variableName, quoteEscapedExpression);
             Results results = await _debugger.CmdAsync(command, ResultClass.done);
             return results.FindString("value");
         }
@@ -618,6 +619,18 @@ internal string EscapeQuotes(string str)
             return str.Replace("\"", "\\\"");
         }
 
+        internal string HandleInvalidChars(string str)
+        {
+            char[] invalidChars = { '\r', '\n' };
+            StringBuilder builder = new StringBuilder();
+            foreach (char c in str)
+            {
+
+                builder.Append(invalidChars.Contains(c) ? ' ' : c);
+            }
+            return builder.ToString();
+        }
+
         #endregion
 
         #region Other