diff --git a/Makefile b/Makefile
index 8a7d789..6e78452 100644
--- a/Makefile
+++ b/Makefile
@@ -14,7 +14,7 @@ LDFLAGS = -lpthread
 # compiler
 CC=g++
 # compiler flags
-CXXFLAGS= -I$(IDIR) -Wall -pedantic -std=c++17
+CXXFLAGS= -I$(IDIR) -Wall -pedantic -std=c++20
 ifeq	($(DEBUG),true)
   # debugging flags
   CC=clang++
diff --git a/src/exec.cpp b/src/exec.cpp
index 88048b4..83b31f0 100644
--- a/src/exec.cpp
+++ b/src/exec.cpp
@@ -188,7 +188,7 @@ void parse_exec(FILE* fd, const char* in, uint32_t size, std::string const& file
 }
   catch(ztd::format_error& e)
   {
-    throw ztd::format_error(e.what(), e.where(), in, filename);
+    throw ztd::format_error(e.what(), filename, in, e.where());
   }
 #endif
 }
@@ -255,7 +255,7 @@ int exec_process(std::string const& runtime, std::vector<std::string> const& arg
   pid_t pid=0;
   // std::string test="echo Hello world\nexit 10\n";
   // fprintf(ffd, "%s\n",, test.c_str(), test.size());
-  FILE* ffd;
+  FILE* ffd=0;
   try
   {
     pid = forkexec(runargs[0], runargs.data());
diff --git a/src/main.cpp b/src/main.cpp
index edcf267..e78411f 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -54,9 +54,16 @@ int main(int argc, char* argv[])
 
   int ret=0;
 
+  bool optstop=false;
+
   try
   {
-    args=options.process(argc, argv, false, true);
+    args=options.process(argc, argv, {.stop_on_argument=true, .output_doubledash=true} );
+    if( args[0] == "--" )
+    {
+      optstop=true;
+      args.erase(args.begin());
+    }
   }
   catch(std::exception& e)
   {
@@ -126,7 +133,7 @@ int main(int argc, char* argv[])
         else
           is_exec = shebang_is_bin;
 
-        if(!is_exec && args.size() > 1) // not exec: parse options on args
+        if(!is_exec && args.size() > 1 && !optstop) // not exec: parse options on args
           args=options.process(args);
 
         if(!is_exec && options['e'])