X-Git-Url: http://gitweb.michael.orlitzky.com/?p=dead%2Flwn-epub.git;a=blobdiff_plain;f=src%2FCommandLine.hs;h=455f7fd7a9416f0e417829ae9f6cad1020670c41;hp=a61cc30e46b570a34f6541e68a39f1368a5a8677;hb=b18c060e5cb708901eb29f1f27b25c467875a143;hpb=6f0e6cbece7e1b1a3c6b43d19eb2f29088af981c

diff --git a/src/CommandLine.hs b/src/CommandLine.hs
index a61cc30..455f7fd 100644
--- a/src/CommandLine.hs
+++ b/src/CommandLine.hs
@@ -1,6 +1,10 @@
 {-# LANGUAGE DeriveDataTypeable #-}
 
-module CommandLine (Args(..), apply_args)
+module CommandLine (
+  Args(..),
+  apply_args,
+  program_name,
+  show_help)
 where
 
 -- Get the version from Cabal.
@@ -71,6 +75,9 @@ is_missing_arg_error s =
   startswith "Requires at least" s
 
 
+show_help :: IO (CmdArgs Args)
+show_help = withArgs ["--help"] parse_args
+
 parse_args :: IO (CmdArgs Args)
 parse_args = do
   x <- getArgs
@@ -80,7 +87,7 @@ parse_args = do
       Left err ->
         if (is_missing_arg_error err) then
           -- Disregard the error message, show help instead.
-          withArgs ["--help"] parse_args
+          show_help
         else do
           hPutStrLn stderr err
           exitWith (ExitFailure exit_args_parse_failed)