Clean-up

MSI.wsf

@@ -478,22 +478,25 @@
 				po_path = WScript.Arguments.Unnamed(2);
 
 			try {
+				// Open and parse IDT files.
 				var
 					idt_src = new IDT(WScript.Arguments.Unnamed(0)),
 					idt_dst = new IDT(WScript.Arguments.Unnamed(1));
 
+				// IDT files must represent identical table.
 				if (idt_src.columns.toString() != idt_dst.columns.toString() ||
 				    idt_src.types  .toString() != idt_dst.types  .toString() ||
 				    idt_src.table              != idt_dst.table              ||
 				    idt_src.key    .toString() != idt_dst.key    .toString())
 					throw new Error("IDT files are not compatible.");
 
+				// Build translations.
 				var trans = new Array();
 				for (var key in idt_src.data) {
 					if (key in idt_dst.data) {
 						// We found a record in both IDT files.
 						for (var col in idt_src.types) {
-							if (idt_src.types[col].charAt(0).toUpperCase() == "L" && idt_src.data[key][col] != "")
+							if (idt_src.types[col].charAt(0).toUpperCase() == "L" && idt_src.data[key][col] != "" && idt_dst.data[key][col] != "")
 								trans[idt_src.data[key][col]] = idt_dst.data[key][col];
 						}
 					}
@@ -506,10 +509,8 @@
 					"Content-Transfer-Encoding: 8bit\n" +
 					(WScript.Arguments.Named.Exists("L") ? "Language: "+ WScript.Arguments.Named("L") +"\n" : "");
 
-				var
-					po_dat_tmp = WScript.CreateObject("ADODB.Stream");
-
 				// Open PO file in memory.
+				var po_dat_tmp = WScript.CreateObject("ADODB.Stream");
 				po_dat_tmp.Open();
 				try {
 					// PO is text file, uses Unix line breaks and UTF-8 encoding.
@@ -524,8 +525,7 @@
 					}
 
 					// Write to file without UTF-8 BOM.
-					var
-						po_dat = WScript.CreateObject("ADODB.Stream")
+					var po_dat = WScript.CreateObject("ADODB.Stream");
 					po_dat.Type = adTypeBinary;
 					po_dat.Mode = adModeReadWrite;
 					po_dat.Open();
@@ -557,8 +557,8 @@
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 ** SIG ** gjcCAR4wJAIBAQQQcAVhGs441BGiowAQS9NQkAIBAAIB
-** SIG ** AAIBAAIBAAIBADAhMAkGBSsOAwIaBQAEFAgwP2tZH4xo
-** SIG ** ShC7TKM0tJUdu1UqoIISyDCCA+4wggNXoAMCAQICEH6T
+** SIG ** AAIBAAIBAAIBADAhMAkGBSsOAwIaBQAEFAU/LB231pJ8
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 ** SIG ** cGUxFDASBgNVBAcTC0R1cmJhbnZpbGxlMQ8wDQYDVQQK
@@ -712,31 +712,31 @@
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-** SIG ** 8ndDGMk=
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+** SIG ** zYJg3usKf63t8Phn4CD5JvBc7pm/+IQP0LbQaxfp0Mmt
+** SIG ** S2EHmLk=
 </signature>
 </package>