Updates from review

src/SIL.Machine/Corpora/UsfmParser.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Text;
 using System.Text.RegularExpressions;
 using SIL.Scripture;
 
@@ -42,7 +43,19 @@ public static void Parse(
                 versification,
                 preserveWhitespace
             );
-            parser.ProcessTokens();
+            try
+            {
+                parser.ProcessTokens();
+            }
+            catch (Exception ex)
+            {
+                var sb = new StringBuilder();
+                sb.Append(
+                    $"An error occurred while parsing the USFM text in Verse: {parser.State.VerseRef}, line: {parser.State.LineNumber}, "
+                );
+                sb.Append($"column: {parser.State.ColumnNumber}, error: '{ex.Message}'");
+                throw new InvalidOperationException(sb.ToString(), ex);
+            }
         }
 
         private static readonly Regex OptBreakSplitter = new Regex("(//)", RegexOptions.Compiled);
@@ -130,18 +143,7 @@ bool preserveWhitespace
         /// </summary>
         public void ProcessTokens()
         {
-            bool continueProcessing = true;
-            while (continueProcessing)
-            {
-                try
-                {
-                    continueProcessing = ProcessToken();
-                }
-                catch (Exception e)
-                {
-                    throw new UsfmParsingException(State, e);
-                }
-            }
+            while (ProcessToken()) { }
         }
 
         /// <summary>

tests/SIL.Machine.Tests/Corpora/UsfmMemoryTextTests.cs

@@ -92,19 +92,22 @@ public void GetRows_TriplicateVerse()
         TextRow[] rows = GetRows(
             @"\id MAT - Test
 \c 1
-\v 1 First verse
-\rem non verse
-\v 1 First verse
-\rem non verse
-\v 1 First verse
+\v 1 First verse 1
+\rem non verse 1
+\v 1 First verse 2
+\rem non verse 2
+\v 1 First verse 3
+\rem non verse 3
 \v 2 Second verse
 ",
             includeAllText: true
         );
         Assert.Multiple(() =>
         {
-            Assert.That(rows[0].Text, Is.EqualTo("First verse"), string.Join(",", rows.ToList().Select(tr => tr.Text)));
-            Assert.That(rows, Has.Length.EqualTo(4), string.Join(",", rows.ToList().Select(tr => tr.Text)));
+            Assert.That(rows, Has.Length.EqualTo(5), string.Join(",", rows.ToList().Select(tr => tr.Text)));
+            Assert.That(rows[0].Text, Is.EqualTo("First verse 1"));
+            Assert.That(rows[3].Text, Is.EqualTo("non verse 3"));
+            Assert.That(rows[4].Text, Is.EqualTo("Second verse"));
         });
     }