From: Simon Marlow <simonmar@microsoft.com>
Date: Fri, 22 Jun 2007 07:54:17 +0000 (+0000)
Subject: ignore all but the last --template option
X-Git-Url: http://git.megacz.com/?a=commitdiff_plain;ds=sidebyside;h=d4f77b051a02471b63de9488b204e6c7fb82b45e;hp=4bc7e71805c4c90c06a323cf2fcff7c218e300bd;p=ghc-hetmet.git

ignore all but the last --template option
---

diff --git a/utils/hsc2hs/Main.hs b/utils/hsc2hs/Main.hs
index 77b948f..a5bd774 100644
--- a/utils/hsc2hs/Main.hs
+++ b/utils/hsc2hs/Main.hs
@@ -133,7 +133,7 @@ main = do
 	-- to find one by looking near the executable.  This only
 	-- works on Win32 or Hugs (getExecDir). On Unix, there's a wrapper
 	-- script which specifies an explicit template flag.
-    flags_w_tpl <- if any template_flag flags then
+    flags_w_tpl0 <- if any template_flag flags then
 			return flags
 		   else
 			do mb_path <- getExecDir "/bin/hsc2hs.exe"
@@ -147,6 +147,12 @@ main = do
 				 then return ((Template templ):)
 				 else return id
 		           return (add_opt flags)
+
+    -- take only the last --template flag on the cmd line
+    let
+      (before,tpl:after) = break template_flag (reverse flags_w_tpl0)
+      flags_w_tpl = reverse (before ++ tpl : filter (not.template_flag) after)
+
     case (files, errs) of
         (_, _)
             | any isHelp    flags_w_tpl -> bye (usageInfo header options)