diff --git a/include/errcodes.h b/include/errcodes.h
new file mode 100644
index 0000000..25ce563
--- /dev/null
+++ b/include/errcodes.h
@@ -0,0 +1,9 @@
+#ifndef ERRCODES_H
+#define ERRCODES_H
+
+#define ERR_HELP    1001
+#define ERR_OPT     1002
+#define ERR_PARSE   1003
+#define ERR_RUNTIME 1004
+
+#endif //ERRCODES_H
diff --git a/include/options.hpp b/include/options.hpp
index 57edd46..e9a1a50 100644
--- a/include/options.hpp
+++ b/include/options.hpp
@@ -11,7 +11,7 @@ extern bool g_include;
 extern bool g_resolve;
 extern bool g_shebang;
 
-void print_lxsh_cmd_help();
+void print_lxsh_extension_help();
 
 void get_opts();
 
@@ -39,4 +39,6 @@ options:
 */
 ztd::option_set create_resolve_opts();
 
+void oneshot_opt_process(const char* arg0);
+
 #endif //OPTIONS_HPP
diff --git a/src/main.cpp b/src/main.cpp
index 63085ac..775b587 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -19,40 +19,7 @@
 #include "exec.hpp"
 #include "shellcode.hpp"
 
-#include "version.h"
-#include "g_version.h"
-
-#define ERR_HELP    1001
-#define ERR_OPT     1002
-#define ERR_PARSE   1003
-#define ERR_RUNTIME 1004
-
-void oneshot_opt_process(const char* arg0)
-{
-  if(options['h'])
-  {
-    print_help(arg0);
-    exit(ERR_HELP);
-  }
-  else if(options["version"])
-  {
-    printf("%s %s%s\n", arg0, VERSION_STRING, VERSION_SUFFIX);
-    printf("%s\n", VERSION_SHA);
-    exit(0);
-  }
-  else if(options["help-link-commands"])
-  {
-    print_include_help();
-    printf("\n\n");
-    print_resolve_help();
-    exit(ERR_HELP);
-  }
-  else if(options["help-lxsh-commands"])
-  {
-    print_lxsh_cmd_help();
-    exit(ERR_HELP);
-  }
-}
+#include "errcodes.h"
 
 int main(int argc, char* argv[])
 {
@@ -160,13 +127,9 @@ int main(int argc, char* argv[])
       if(is_exec)
       {
         if(options["debashify"])
-        {
           shebang = "#!/bin/sh";
-        }
         if(options["debashify"] || basename(shebang) == "bash")
-        {
           g_bash = true;
-        }
         args.erase(args.begin());
         return exec_process(shebang.substr(2), args, filecontents, file);
       }
@@ -213,7 +176,7 @@ int main(int argc, char* argv[])
       // post-listing modifiers
       // implement commands
       std::set<std::string> req_fcts;
-      if(shebang_is_bin)
+      if(shebang_is_bin && !options["no-extend"])
         req_fcts = find_lxsh_commands(sh);
       if(options["debashify"])
         concat_sets(req_fcts, debashify(sh) );
@@ -239,12 +202,12 @@ int main(int argc, char* argv[])
         std::string destfile=options['o'];
         // resolve - to stdout
         if(destfile == "-")
-        destfile = "/dev/stdout";
+          destfile = "/dev/stdout";
         // output
         std::ofstream(destfile) << sh->generate(g_shebang, 0);
         // don't chmod on /dev/
         if(destfile.substr(0,5) != "/dev/")
-        ztd::exec("chmod", "+x", destfile);
+          ztd::exec("chmod", "+x", destfile);
       }
       else // to console
       {
diff --git a/src/options.cpp b/src/options.cpp
index aa6a423..dce2c6c 100644
--- a/src/options.cpp
+++ b/src/options.cpp
@@ -3,6 +3,10 @@
 #include "processing.hpp"
 #include "shellcode.hpp"
 
+#include "errcodes.h"
+#include "version.h"
+#include "g_version.h"
+
 ztd::option_set options = gen_options();
 bool opt_minify=false;
 
@@ -18,8 +22,8 @@ ztd::option_set gen_options()
       ztd::option("\r  [Help]"),
       ztd::option('h', "help",          false, "Display this help message"),
       ztd::option("version",            false, "Display version"),
-      ztd::option("help-link-commands", false, "Print help for special lxsh commands"),
-      ztd::option("help-lxsh-commands", false, "Print help for linker commands"),
+      ztd::option("help-link-commands", false, "Print help for linker commands"),
+      ztd::option("help-extend-fcts",   false, "Print help for lxsh extension functions"),
       ztd::option("\r  [Output]"),
       ztd::option('o', "output",        true , "Output result script to file", "file"),
       ztd::option('c', "stdout",        false, "Output result script to stdout"),
@@ -33,6 +37,7 @@ ztd::option_set gen_options()
       ztd::option('C', "no-cd",         false, "Don't cd when doing %include and %resolve"),
       ztd::option('I', "no-include",    false, "Don't resolve %include commands"),
       ztd::option('R', "no-resolve",    false, "Don't resolve %resolve commands"),
+      ztd::option("no-extend",          false, "Don't add lxsh extension functions"),
       ztd::option("debashify",          false, "Attempt to turn a bash-specific script into a POSIX shell script"),
       ztd::option("\r  [var/fct processing]"),
       ztd::option("minify-var",         false, "Minify variable names"),
@@ -133,10 +138,37 @@ void print_resolve_help()
   opts.print_help(3,7);
 }
 
-void print_lxsh_cmd_help()
+void print_lxsh_extension_help()
 {
   for(auto it: lxsh_extend_fcts)
   {
     printf("%s %s\n%s\n\n", it.first.c_str(), it.second.arguments.c_str(), it.second.description.c_str());
   }
 }
+
+void oneshot_opt_process(const char* arg0)
+{
+  if(options['h'])
+  {
+    print_help(arg0);
+    exit(ERR_HELP);
+  }
+  else if(options["version"])
+  {
+    printf("%s %s%s\n", arg0, VERSION_STRING, VERSION_SUFFIX);
+    printf("%s\n", VERSION_SHA);
+    exit(0);
+  }
+  else if(options["help-link-commands"])
+  {
+    print_include_help();
+    printf("\n\n");
+    print_resolve_help();
+    exit(ERR_HELP);
+  }
+  else if(options["help-extend-fcts"])
+  {
+    print_lxsh_extension_help();
+    exit(ERR_HELP);
+  }
+}