escript to accept emulator arguments when script file has no shebang

According to the documentation, if the second or third line in a
script starts with %%!, then escript will use the rest of the line
as emulator options.  However, previously this was only the case
if the first line started with #!.  This change removes that check,
and unconditionally uses the %%! line if present.

1 files changed, 17 insertions, 0 deletions

diff --git a/lib/stdlib/test/escript_SUITE.erl b/lib/stdlib/test/escript_SUITE.erl
index 7634c21a17..3749d594f2 100644
--- a/lib/stdlib/test/escript_SUITE.erl
+++ b/lib/stdlib/test/escript_SUITE.erl
@@ -26,6 +26,7 @@
 	 errors/1,
 	 strange_name/1,
 	 emulator_flags/1,
+	 emulator_flags_no_shebang/1,
 	 module_script/1,
 	 beam_script/1,
 	 archive_script/1,
@@ -45,6 +46,7 @@ suite() -> [{ct_hooks,[ts_install_cth]}].
 
 all() -> 
     [basic, errors, strange_name, emulator_flags,
+     emulator_flags_no_shebang,
      module_script, beam_script, archive_script, epp,
      create_and_extract, foldl, overflow,
      archive_script_file_access, unicode].
@@ -150,6 +152,21 @@ emulator_flags(Config) when is_list(Config) ->
     ok.
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+emulator_flags_no_shebang(Config) when is_list(Config) ->
+    Data = ?config(data_dir, Config),
+    Dir = filename:absname(Data),		%Get rid of trailing slash.
+    %% Need run_with_opts, to always use "escript" explicitly
+    ?line run_with_opts(Dir, "", "emulator_flags_no_shebang -arg1 arg2 arg3",
+	      [<<"main:[\"-arg1\",\"arg2\",\"arg3\"]\n"
+		"nostick:[{nostick,[]}]\n"
+		"mnesia:[{mnesia,[\"dir\",\"a/directory\"]},{mnesia,[\"debug\",\"verbose\"]}]\n"
+		"ERL_FLAGS=false\n"
+		"unknown:[]\n"
+		"ExitCode:0">>]),
+    ok.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %% Pick the source code from the emulator_flags script
 %% Generate a new escript with a module header