--- a/scripts/help/doc.m	Fri Apr 23 11:13:48 2010 -0700
+++ b/scripts/help/doc.m	Fri Apr 23 11:28:50 2010 -0700
@@ -45,9 +45,9 @@
       ## FIXME -- maybe we should have a better way of doing this.
 
       if (ischar (fname))
-	ftype = exist (fname);
+        ftype = exist (fname);
       else
-	error ("doc: expecting argument to be a character string");
+        error ("doc: expecting argument to be a character string");
       endif
     else
       fname = "";
@@ -81,7 +81,7 @@
     ## the third and fourth arguments.  Someone should fix that.
 
     cmd = sprintf ("\"%s\" --file \"%s\" --directory \"%s\"",
-		   info_program (), info_file_name, info_dir);
+                   info_program (), info_file_name, info_dir);
 
     have_fname = ! isempty (fname);
 
@@ -92,7 +92,7 @@
     if (! (have_fname && status == 0))
       status = system (cmd);
       if (status == 127)
-	warning ("unable to find info program `%s'", info_program ());
+        warning ("unable to find info program `%s'", info_program ());
       endif
     endif