Fix parsing of prescriptions without regular dosing.

Tests/Medication/PrescriptionTest.cs

@@ -102,5 +102,14 @@ namespace Tests.Medication
             Assert.AreEqual("0", list[1].Night);
             Assert.AreEqual("neu", list[1].Comment);
         }
+
+        [Test]
+        public void PrescriptionWithoutTypicalDosing()
+        {
+            Prescription p = Prescription.FromLine("Eusaprim forte\t alle zwei Tage");
+            Assert.AreEqual("Eusaprim forte", p.Drug);
+            Assert.AreEqual("alle zwei Tage", p.Comment);
+            Assert.AreEqual("Eusaprim forte\talle zwei Tage", p.ToString(), "ToString");
+        }
     }
 }

zaaReloaded2/Medication/Prescription.cs

@@ -157,14 +157,18 @@ namespace zaaReloaded2.Medication
             }
             if (!String.IsNullOrEmpty(Comment))
             {
-                s += " " + Comment.Trim();
+                if (!s.EndsWith("\t"))
+                {
+                    s += " ";
+                }
+                s += Comment;
             }
             return s;
         }
 
         #endregion
 
-        #region Constructor
+        #region Constructors
 
         public Prescription() { }
 
@@ -190,18 +194,18 @@ namespace zaaReloaded2.Medication
         #region Fields
 
         private const string DOSE_GROUP = "dose";
-        private const string DOSE = @"(\d\s+1/[234]|[\u00bd\u2153\u00bc]|\d+)";
+        private const string DOSE = @"(\d\s+1/[234]|(\d\s?)?[\u00bd\u2153\u00bc]|\d+)";
         private const string SPACER = @"(\s*[-\u2012\u2013\u2014]+\s*)";
 
         // Enclose entire regular expression in parentheses so we can use it
         // to split a line and capture the delimiter.
         private static readonly Regex lineRegex = new Regex(
-            @"((?<drug>[^\t]+)\s+" +
+            @"(((?<drug>[^\t]+)\s+" +
             @"(?<dose>" + DOSE + @")" + SPACER +
             @"(?<dose>" + DOSE + @")" + SPACER +
             @"(?<dose>" + DOSE + @")" +
             @"(" + SPACER + @"(?<dose>" + DOSE + @"))?" +
-            @"( +(?<comment>[^\t]+))?\s*)");
+            @"( +(?<comment>[^\t]+))?)|((?<drug>[^\t]+)(  +|\t+)(?<comment>[^\t]+)))");
 
         private static readonly Regex spaceRegex = new Regex(@"\s+");