1 files changed, 12 insertions, 2 deletions
diff --git a/tools/upgrade.nom b/tools/upgrade.nom
index 7d36793..575646e 100755
--- a/tools/upgrade.nom
+++ b/tools/upgrade.nom
@@ -1,7 +1,7 @@
 #!/usr/bin/env nomsu -V4.8.10
 #
     Tool to automatically update code from old versions of Nomsu. Usage:
-        nomsu tools/upgrade.nom [-i] file1 file2 directory1 ...
+    nomsu tools/upgrade.nom [-i] file1 file2 directory1 ...
     If "-i" is the first argument, upgrades will be performed in-place. Otherwise, the
     upgraded code will be printed.
 
@@ -10,27 +10,37 @@ use "lib/os.nom"
 
 %args = (command line args)
 %inplace = (no)
+%start_version = (nil)
 %version = (Nomsu version)
 repeat:
     if %args.1 is:
         "-i":
             %inplace = (yes)
             %args::remove index 1
+        
         "-t":
             use "lib/consolecolor.nom"
             %test = (yes)
             %args::remove index 1
+        
         "-V":
             %version = %args.2
             %args::remove index 1
             %args::remove index 1
+        
+        "-S":
+            %start_version = %args.2
+            %args::remove index 1
+            %args::remove index 1
+        
         else: stop
 
 for %path in %args:
     for file %filename in %path:
         unless (%filename::matches "%.nom$"): do next %filename
         %tree = (parse (read file %filename) from %filename)
-        %uptree = (%tree upgraded to %version)
+        %uptree = (..)
+            %tree upgraded from (%start_version or (%tree.version or (Nomsu version))) to %version
         %text = "\
             ..#!/usr/bin/env nomsu -V\%version
             \(%uptree as nomsu)"