--- a/DiffTextView.st	Fri Jan 30 00:18:53 1998 +0100
+++ b/DiffTextView.st	Fri Jan 30 12:24:57 1998 +0100
@@ -14,7 +14,7 @@
 	instanceVariableNames:'useColors showSeparators addedColor addedBgColor removedColor
 		removedBgColor changedColor changedBgColor changedSpacesOnlyColor
 		changedSpacesOnlyBgColor diffLineNumbers'
-	classVariableNames:''
+	classVariableNames:'DiffCommandTemplate'
 	poolDictionaries:''
 	category:'Views-Text'
 !
@@ -90,17 +90,38 @@
 !DiffTextView class methodsFor:'defaults'!
 
 diffCommand
-    "return the diff-command (with arguments)"
+    "return the diff-command (with argument placeHolders)"
+
+    OperatingSystem isMSDOSlike ifTrue:[
+        ^ DiffCommandTemplate ? 'diff %1 %2'
+    ].
+
+    ^ DiffCommandTemplate ? 'diff -b %1 %2'
+
+    "Modified: / 30.1.1998 / 12:12:49 / cg"
+!
 
-    ^ 'diff -b'
+diffCommandTemplate:aCommandTemplateString
+    "set the diff-command template"
+
+    OperatingSystem isMSDOSlike ifTrue:[
+        ^ DiffCommandTemplate ? 'diff %1 %2'
+    ].
+
+    ^ DiffCommandTemplate ? 'diff -b %1 %2'
+
+    "Modified: / 30.1.1998 / 12:10:34 / cg"
+    "Created: / 30.1.1998 / 12:12:37 / cg"
 ! !
 
 !DiffTextView methodsFor:'accessing'!
 
 text1:t1 text2:t2
-    "set the two texts which are to be diffed"
+    "set the two texts which are to be diffed;
+     execute DiffCommand and update the two textViews."
 
-    |tmpFile1 tmpFile2 name1 tmpName2 stream line text1 text2 diffList pidString|
+    |tmpFile1 tmpFile2 name1 tmpName2 stream line 
+     text1 text2 diffList pidString diffCmd|
 
     text1 := t1 asStringCollection.
     text2 := t2 asStringCollection.
@@ -125,9 +146,11 @@
     "
      start diff on it ...
     "
-    stream := PipeStream 
-                readingFrom:self class diffCommand , ' ' , 
-                            tmpFile1 asString, ' ' , tmpFile2 asString.
+    diffCmd := self class diffCommand 
+                    bindWith:tmpFile1 asString
+                    with:tmpFile2 asString.
+
+    stream := PipeStream readingFrom:diffCmd.
     stream isNil ifTrue:[
         self error:'cannot execute diff'.
         text1 := text2 := nil.
@@ -177,7 +200,7 @@
      v open
     "
 
-    "Modified: 25.4.1996 / 13:33:52 / cg"
+    "Modified: / 30.1.1998 / 12:12:13 / cg"
 ! !
 
 !DiffTextView methodsFor:'initialization'!
@@ -451,4 +474,4 @@
 !DiffTextView class methodsFor:'documentation'!
 
 version
-^ '$Header: /cvs/stx/stx/libtool/DiffTextView.st,v 1.21 1997-08-07 10:54:51 cg Exp $'! !
+^ '$Header: /cvs/stx/stx/libtool/DiffTextView.st,v 1.22 1998-01-30 11:24:57 cg Exp $'! !