removed redundant return in a void function

added some test cases to cover unary with relational ops
refactored htb and rbt a bit
2026-05-26 12:25:49 +09:00 · 2026-05-25 11:56:22 +09:00 · 2026-05-24 19:47:39 +09:00 · 2026-05-24 14:57:16 +09:00 · 2026-05-24 14:55:59 +09:00 · 2026-05-23 14:32:19 +09:00
37 changed files with 1253 additions and 363 deletions
@@ -723,6 +723,9 @@ Common built-ins:
 - `NR`, `FNR`, `NF`
 - `FS`, `RS`, `OFS`, `ORS`
 - `FILENAME`, `OFILENAME`
+- `ARGC`, `ARGV`
+- `ENVIRON`
+- `PIPECLOEXEC`

 Example:

@@ -730,6 +733,27 @@ Example:
 { print NR, NF, $0 }
 ```

+Runtime-specific predefined variables:
+
+| Name | Type | Description |
+|------|------|-------------|
+| `ARGC` | int | number of command-line arguments available via `ARGV` |
+| `ARGV` | array | command-line argument vector. `ARGV[0]` is usually the program name |
+| `ENVIRON` | map | process environment as a map. Values imported from the host environment may become `int`, `flt`, or `str` depending on content |
+| `PIPECLOEXEC` | int/bool-like | controls whether file descriptors are opened with `CLOEXEC` when Hawk runs an external command for piping. `0` keeps the default inheritance behavior, `1` enables close-on-exec. This corresponds to `@pragma pipecloexec` |
+
+`ENVIRON` affects child processes started by piping and `sys::system()`. Modifying it changes the environment passed to those children without changing the process-global environment of the embedding application.
+
+Examples:
+
+```awk
+BEGIN {
+	print ARGC, ARGV[0]
+	print ENVIRON["HOME"]
+	PIPECLOEXEC = 1
+}
+```
+
 ## Built-in Functions

 Hawk includes awk built-ins (e.g., `length`, `substr`, `split`, `index`) plus extensions in modules (see below).
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: hawk 1.0.0\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2026-05-14 23:00+0900\n"
+"POT-Creation-Date: 2026-05-23 12:01+0900\n"
 "PO-Revision-Date: 2026-03-28 16:29+0800\n"
 "Last-Translator:  <author@hawk>\n"
 "Language-Team: Korean <translation-team-ko@hawk>\n"
@@ -101,7 +101,7 @@ msgstr "오류 허용성을 높임"
 msgid "enable the extended call syntax"
 msgstr "확장 호출 문법을 활성화"

-#: ../../bin/hawk.c:409 ../../bin/main.c:414
+#: ../../bin/hawk.c:409 ../../bin/main.c:416
 msgid "USAGE"
 msgstr "사용법"

@@ -117,7 +117,7 @@ msgstr "      "
 msgid "[options] [ -- ] sourcestring [datafile]*"
 msgstr "[옵션] [ -- ] 소스문자열 [자료파일]*"

-#: ../../bin/hawk.c:411 ../../bin/main.c:415
+#: ../../bin/hawk.c:411 ../../bin/main.c:417
 msgid "Options as follows:"
 msgstr "옵션은 다음과 같습니다:"

@@ -214,15 +214,15 @@ msgstr " --classic                         고전 모드로 실행"
 msgid "Special mode switching options(must be specified first to take effect):"
 msgstr "모드 전환 옵션(처음에 지정해야 적용됨):"

-#: ../../bin/hawk.c:446 ../../bin/main.c:418
+#: ../../bin/hawk.c:446 ../../bin/main.c:420
 msgid " --awk/--hawk                      switch to the awk mode(default)"
 msgstr " --awk/--hawk                      awk 모드로 전환(기본값)"

-#: ../../bin/hawk.c:447 ../../bin/main.c:419
+#: ../../bin/hawk.c:447 ../../bin/main.c:421
 msgid " --cut                             switch to the cut mode"
 msgstr " --cut                             cut 모드로 전환"

-#: ../../bin/hawk.c:448 ../../bin/main.c:420
+#: ../../bin/hawk.c:448 ../../bin/main.c:422
 msgid " --sed                             switch to the sed mode"
 msgstr " --sed                             sed 모드로 전환"

@@ -246,15 +246,15 @@ msgstr "코드"
 msgid "File "
 msgstr "파일 "

-#: ../../bin/main.c:414
+#: ../../bin/main.c:416
 msgid "[options] [mode specific options and parameters]"
 msgstr "[옵션] [모드별 옵션과 인자]"

-#: ../../bin/main.c:416
+#: ../../bin/main.c:418
 msgid " --usage                           print this message"
 msgstr " --usage                           이 메시지를 출력"

-#: ../../bin/main.c:417
+#: ../../bin/main.c:419
 msgid " --version                         print version"
 msgstr " --version                         버전을 출력"

@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: hawk 1.0.0\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2026-05-14 23:00+0900\n"
+"POT-Creation-Date: 2026-05-23 12:01+0900\n"
 "PO-Revision-Date: 2026-03-28 17:00+0800\n"
 "Last-Translator:  <author@hawk>\n"
 "Language-Team: Chinese (Simplified) <translation-team-zh_CN@hawk>\n"
@@ -101,7 +101,7 @@ msgstr "提高容错性"
 msgid "enable the extended call syntax"
 msgstr "启用扩展调用语法"

-#: ../../bin/hawk.c:409 ../../bin/main.c:414
+#: ../../bin/hawk.c:409 ../../bin/main.c:416
 msgid "USAGE"
 msgstr "用法"

@@ -117,7 +117,7 @@ msgstr "    "
 msgid "[options] [ -- ] sourcestring [datafile]*"
 msgstr "[选项] [ -- ] 源字符串 [数据文件]*"

-#: ../../bin/hawk.c:411 ../../bin/main.c:415
+#: ../../bin/hawk.c:411 ../../bin/main.c:417
 msgid "Options as follows:"
 msgstr "选项如下:"

@@ -213,15 +213,15 @@ msgstr " --classic                         以经典模式运行"
 msgid "Special mode switching options(must be specified first to take effect):"
 msgstr "特殊模式切换选项（必须先指定才能生效）："

-#: ../../bin/hawk.c:446 ../../bin/main.c:418
+#: ../../bin/hawk.c:446 ../../bin/main.c:420
 msgid " --awk/--hawk                      switch to the awk mode(default)"
 msgstr " --awk/--hawk                      切换到 awk 模式（默认）"

-#: ../../bin/hawk.c:447 ../../bin/main.c:419
+#: ../../bin/hawk.c:447 ../../bin/main.c:421
 msgid " --cut                             switch to the cut mode"
 msgstr " --cut                             切换到 cut 模式"

-#: ../../bin/hawk.c:448 ../../bin/main.c:420
+#: ../../bin/hawk.c:448 ../../bin/main.c:422
 msgid " --sed                             switch to the sed mode"
 msgstr " --sed                             切换到 sed 模式"

@@ -245,15 +245,15 @@ msgstr "代码"
 msgid "File "
 msgstr "文件 "

-#: ../../bin/main.c:414
+#: ../../bin/main.c:416
 msgid "[options] [mode specific options and parameters]"
 msgstr "[选项] [模式特定选项与参数]"

-#: ../../bin/main.c:416
+#: ../../bin/main.c:418
 msgid " --usage                           print this message"
 msgstr " --usage                           显示此信息"

-#: ../../bin/main.c:417
+#: ../../bin/main.c:419
 msgid " --version                         print version"
 msgstr " --version                         显示版本"

@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2026-05-14 23:00+0900\n"
+"POT-Creation-Date: 2026-05-23 12:01+0900\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -101,7 +101,7 @@ msgstr ""
 msgid "enable the extended call syntax"
 msgstr ""

-#: ../../bin/hawk.c:409 ../../bin/main.c:414
+#: ../../bin/hawk.c:409 ../../bin/main.c:416
 msgid "USAGE"
 msgstr ""

@@ -117,7 +117,7 @@ msgstr ""
 msgid "[options] [ -- ] sourcestring [datafile]*"
 msgstr ""

-#: ../../bin/hawk.c:411 ../../bin/main.c:415
+#: ../../bin/hawk.c:411 ../../bin/main.c:417
 msgid "Options as follows:"
 msgstr ""

@@ -211,15 +211,15 @@ msgstr ""
 msgid "Special mode switching options(must be specified first to take effect):"
 msgstr ""

-#: ../../bin/hawk.c:446 ../../bin/main.c:418
+#: ../../bin/hawk.c:446 ../../bin/main.c:420
 msgid " --awk/--hawk                      switch to the awk mode(default)"
 msgstr ""

-#: ../../bin/hawk.c:447 ../../bin/main.c:419
+#: ../../bin/hawk.c:447 ../../bin/main.c:421
 msgid " --cut                             switch to the cut mode"
 msgstr ""

-#: ../../bin/hawk.c:448 ../../bin/main.c:420
+#: ../../bin/hawk.c:448 ../../bin/main.c:422
 msgid " --sed                             switch to the sed mode"
 msgstr ""

@@ -243,15 +243,15 @@ msgstr ""
 msgid "File "
 msgstr ""

-#: ../../bin/main.c:414
+#: ../../bin/main.c:416
 msgid "[options] [mode specific options and parameters]"
 msgstr ""

-#: ../../bin/main.c:416
+#: ../../bin/main.c:418
 msgid " --usage                           print this message"
 msgstr ""

-#: ../../bin/main.c:417
+#: ../../bin/main.c:419
 msgid " --version                         print version"
 msgstr ""

@@ -26,6 +26,7 @@

 #include "main.h"
 #include <hawk.h>
+#include <hawk-fmt.h>
 #include <hawk-glob.h>
 #include <hawk-po.h>
 #include <hawk-xma.h>
@@ -36,6 +37,7 @@

 #if defined(_WIN32)
 #	include <windows.h>
+#	include <signal.h>
 #elif defined(__OS2__)
 #	define INCL_ERRORS
 #	include <os2.h>
@@ -1456,11 +1456,11 @@ Hawk::Value::IndexIterator Hawk::Value::getNextIndex (Index* idx, const IndexIte
 // Hawk::Run
 //////////////////////////////////////////////////////////////////

-Hawk::Run::Run (Hawk* hawk): hawk(hawk), rtx(HAWK_NULL), envp(HAWK_NULL), env_map(HAWK_NULL), env_map_rev(0)
+Hawk::Run::Run (Hawk* hawk): hawk(hawk), rtx(HAWK_NULL), envp(HAWK_NULL), env_map(HAWK_NULL), env_map_rev(0), env_type(HAWK_RTX_ENV_MK_BPP)
 {
 }

-Hawk::Run::Run (Hawk* hawk, hawk_rtx_t* rtx): hawk(hawk), rtx(rtx), envp(HAWK_NULL), env_map(HAWK_NULL), env_map_rev(0)
+Hawk::Run::Run (Hawk* hawk, hawk_rtx_t* rtx): hawk(hawk), rtx(rtx), envp(HAWK_NULL), env_map(HAWK_NULL), env_map_rev(0), env_type(HAWK_RTX_ENV_MK_BPP)
 {
 	HAWK_ASSERT(this->rtx != HAWK_NULL);
 }
@@ -2159,6 +2159,7 @@ void Hawk::fini_runctx ()
 			this->runctx.envp = HAWK_NULL;
 			this->runctx.env_map = HAWK_NULL;
 			this->runctx.env_map_rev = 0;
+			this->runctx.env_type = HAWK_RTX_ENV_MK_BPP;
 		}

 		hawk_rtx_close(this->runctx.rtx);
@@ -1342,11 +1342,17 @@ public:
 			return this->env_map_rev;
 		}

-		void setEnvCache (void* envp, hawk_map_t* env_map, hawk_oow_t env_map_rev)
+		hawk_rtx_env_mk_type_t getEnvType () const
+		{
+			return this->env_type;
+		}
+
+		void setEnvCache (void* envp, hawk_map_t* env_map, hawk_oow_t env_map_rev, hawk_rtx_env_mk_type_t env_type)
 		{
 			this->envp = envp;
 			this->env_map = env_map;
 			this->env_map_rev = env_map_rev;
+			this->env_type = env_type;
 		}

 	protected:
@@ -1356,6 +1362,7 @@ public:
 		void* envp;
 		hawk_map_t* env_map;
 		hawk_oow_t env_map_rev;
+		hawk_rtx_env_mk_type_t env_type;
 	};

 	///
@@ -34,21 +34,42 @@
 #define IO_UFLAG_PIPE_IS_NWIO (((hawk_uint16_t)1) << 0)
 #define IO_UFLAG_CONSOLE_PENDING_NEXT (((hawk_uint16_t)1) << 1)

-// TODO: remove the following definitions and find a way to share the similar definitions in std.c
+#if defined(_WIN32)
+#	include <windows.h>
+#	include <tchar.h>
+#	if defined(HAWK_HAVE_CFG_H) && defined(HAWK_ENABLE_LIBLTDL)
+#		include <ltdl.h>
+#		define USE_LTDL
+#	endif
+#	include <io.h>
+#elif defined(__OS2__)
+#	define INCL_DOSMODULEMGR
+#	define INCL_DOSPROCESS
+#	define INCL_DOSERRORS
+#	include <os2.h>
+#elif defined(__DOS__)
+	/* nothing to include */
+#else
+#	include "syscall.h"
 #	if defined(HAWK_ENABLE_LIBLTDL)
+#		include <ltdl.h>
 #		define USE_LTDL
 #	elif defined(HAVE_DLFCN_H)
+#		include <dlfcn.h>
 #		define USE_DLFCN
 #	else
 #		error UNSUPPORTED DYNAMIC LINKER
 #	endif
+#endif

-#if defined(HAVE_CRT_EXTERNS_H)
+#if defined(_WIN32)
+#	define SYSTEM_ENVIRON _environ
+#elif defined(HAVE_CRT_EXTERNS_H)
 #	include <crt_externs.h> /* MacOSX/darwin. _NSGetEnviron() */
 #	define SYSTEM_ENVIRON (*(_NSGetEnviron()))
 #else
 	extern char** environ;
-#	define SYSTEM_ENVIRON ::environ
+#	define SYSTEM_ENVIRON environ
 #endif

 /////////////////////////////////
@@ -78,8 +99,6 @@ static void* rtx_env_maker (hawk_rtx_t* rtx, hawk_rtx_env_mk_type_t env_mk_type)
 	hawk_oow_t env_map_rev;
 	int gbl_id;

-	if (env_mk_type != HAWK_RTX_ENV_MK_BPP) return HAWK_NULL;
-
 	run = GET_STD_RXTN(rtx)->run;
 	if (HAWK_UNLIKELY(run == HAWK_NULL)) return HAWK_NULL;
 	hawk = (HawkStd*)(Hawk*)*run;
@@ -103,16 +122,17 @@ static void* rtx_env_maker (hawk_rtx_t* rtx, hawk_rtx_env_mk_type_t env_mk_type)
 		env_map_rev = 0;
 	}

-	if (!run->getEnvp() || run->getEnvMap() != env_map ||
+	if (!run->getEnvp() || run->getEnvType() != env_mk_type ||
+	    run->getEnvMap() != env_map ||
 	    (env_map && run->getEnvMapRev() != env_map_rev))
 	{
-		hawk_bch_t** envp;
+		void* envp;

-		envp = hawk_rtx_commit_environ(rtx, gbl_id);
+		envp = hawk_rtx_commit_environ(rtx, gbl_id, env_mk_type);
 		if (HAWK_UNLIKELY(!envp)) return HAWK_NULL;

 		if (run->getEnvp()) hawk_rtx_freemem(rtx, run->getEnvp());
-		run->setEnvCache(envp, env_map, env_map_rev);
+		run->setEnvCache(envp, env_map, env_map_rev, env_mk_type);
 	}

 	return run->getEnvp();
@@ -255,9 +255,9 @@ static hawk_bch_t* mbs_to_mbuf (hawk_dir_t* dir, const hawk_bch_t* mbs, hawk_bec
 }

 #if defined(_WIN32) || defined(__OS2__) || defined(__DOS__)
-static hawk_bch_t* make_mbsdos_path (hawk_dir_t* dir, const hawk_bch_t* mpath)
+static hawk_bch_t* make_bcstr_path (hawk_dir_t* dir, const hawk_bch_t* mpath)
 {
-	if (mpath[0] == '\0')
+	if (mpath[0] == '\0') /* blank */
 	{
 		if (hawk_becs_cpy(&dir->mbuf, "*.*") == (hawk_oow_t)-1) return HAWK_NULL;
 	}
@@ -265,18 +265,18 @@ static hawk_bch_t* make_mbsdos_path (hawk_dir_t* dir, const hawk_bch_t* mpath)
 	{
 		hawk_oow_t len;
 		if ((len = hawk_becs_cpy(&dir->mbuf, mpath)) == (hawk_oow_t)-1 ||
-		    (!HAWK_ISPATHMBSEP(mpath[len - 1]) &&
-		     !hawk_ismbsdrivecurpath(mpath) &&
-		     hawk_becs_ccat(&dir->mbuf, '\\') == (hawk_oow_t)-1) ||
+		    (!HAWK_IS_PATH_SEP(mpath[len - 1]) && /* last letter is not a path sepearator */
+		     !(len == 2 && HAWK_IS_PATH_DRIVE(mpath)) &&  /* isn't just a driver letter and colon (e.g. A:) */
+		     hawk_becs_ccat(&dir->mbuf, '\\') == (hawk_oow_t)-1 /* append a path separator */ ) ||
 		    hawk_becs_cat(&dir->mbuf, "*.*") == (hawk_oow_t)-1) return HAWK_NULL;
 	}

 	return HAWK_BECS_PTR(&dir->mbuf);
 }

-static hawk_uch_t* make_wcsdos_path (hawk_dir_t* dir, const hawk_uch_t* wpath)
+static hawk_uch_t* make_ucstr_path (hawk_dir_t* dir, const hawk_uch_t* wpath)
 {
-	if (wpath[0] == HAWK_UT('\0'))
+	if (wpath[0] == '\0')
 	{
 		if (hawk_uecs_cpy(&dir->wbuf, HAWK_UT("*.*")) == (hawk_oow_t)-1) return HAWK_NULL;
 	}
@@ -284,9 +284,9 @@ static hawk_uch_t* make_wcsdos_path (hawk_dir_t* dir, const hawk_uch_t* wpath)
 	{
 		hawk_oow_t len;
 		if ((len = hawk_uecs_cpy(&dir->wbuf, wpath)) == (hawk_oow_t)-1 ||
-		    (!HAWK_ISPATHWCSEP(wpath[len - 1]) &&
-		     !hawk_iswcsdrivecurpath(wpath) &&
-		     hawk_uecs_ccat (&dir->wbuf, HAWK_UT('\\')) == (hawk_oow_t)-1) ||
+		    (!HAWK_IS_PATH_SEP(wpath[len - 1]) && /* last letter is not a path sepearator */
+		     !(len == 2 && HAWK_IS_PATH_DRIVE(wpath)) &&  /* isn't just a driver letter and colon (e.g. A:) */
+		     hawk_uecs_ccat(&dir->wbuf, HAWK_UT('\\')) == (hawk_oow_t)-1 /* append a path separator */ ) ||
 		    hawk_uecs_cat(&dir->wbuf, HAWK_UT("*.*")) == (hawk_oow_t)-1) return HAWK_NULL;
 	}

@@ -309,7 +309,7 @@ static int reset_to_path (hawk_dir_t* dir, const hawk_ooch_t* path)
 	{
 		hawk_bch_t* mptr;

-		mptr = make_mbsdos_path(dir, (const hawk_bch_t*)path);
+		mptr = make_bcstr_path(dir, (const hawk_bch_t*)path);
 		if (mptr == HAWK_NULL) return -1;

 	#if defined(HAWK_OOCH_IS_BCH)
@@ -323,7 +323,7 @@ static int reset_to_path (hawk_dir_t* dir, const hawk_ooch_t* path)
 		hawk_uch_t* wptr;
 		HAWK_ASSERT (dir->flags & HAWK_DIR_UPATH);

-		wptr = make_wcsdos_path(dir, (const hawk_uch_t*)path);
+		wptr = make_ucstr_path(dir, (const hawk_uch_t*)path);
 		if (wptr == HAWK_NULL) return -1;

 	#if defined(HAWK_OOCH_IS_BCH)
@@ -363,14 +363,14 @@ static int reset_to_path (hawk_dir_t* dir, const hawk_ooch_t* path)

 	if (dir->flags & HAWK_DIR_BPATH)
 	{
-		mptr = make_mbsdos_path (dir, (const hawk_bch_t*)path);
+		mptr = make_bcstr_path (dir, (const hawk_bch_t*)path);
 	}
 	else
 	{
 		hawk_uch_t* wptr;
 		HAWK_ASSERT (dir->flags & HAWK_DIR_UPATH);

-		wptr = make_wcsdos_path(dir, (const hawk_uch_t*)path);
+		wptr = make_ucstr_path(dir, (const hawk_uch_t*)path);
 		if (wptr == HAWK_NULL) return -1;
 		mptr = wcs_to_mbuf(dir, wptr, &dir->mbuf);
 	}
@@ -417,7 +417,7 @@ static int reset_to_path (hawk_dir_t* dir, const hawk_ooch_t* path)

 	if (dir->flags & HAWK_DIR_BPATH)
 	{
-		mptr = make_mbsdos_path(dir, (const hawk_bch_t*)path);
+		mptr = make_bcstr_path(dir, (const hawk_bch_t*)path);
 	}
 	else
 	{
@@ -425,7 +425,7 @@ static int reset_to_path (hawk_dir_t* dir, const hawk_ooch_t* path)

 		HAWK_ASSERT(dir->flags & HAWK_DIR_UPATH);

-		wptr = make_wcsdos_path(dir, (const hawk_uch_t*)path);
+		wptr = make_ucstr_path(dir, (const hawk_uch_t*)path);
 		if (wptr == HAWK_NULL) return -1;
 		mptr = wcs_to_mbuf(dir, wptr, &dir->mbuf);
 	}
@@ -34,8 +34,20 @@
 #include <hawk-ecs.h>
 #include <hawk-dir.h>
 #include <hawk-glob.h>
+#include <hawk-utl.h>

+#if defined(_WIN32)
+#	include <windows.h>
+#elif defined(__OS2__)
+#	define INCL_DOSERRORS
+#	define INCL_DOSFILEMGR
+#	include <os2.h>
+#elif defined(__DOS__)
+#	include <errno.h>
+#	include <io.h>
+#else
 #	include "syscall.h"
+#endif

 #define NO_RECURSION 1

@@ -49,9 +61,10 @@ typedef enum segment_type_t segment_type_t;


 #define IS_ESC(c) HAWK_FNMAT_IS_ESC(c)
-#define IS_SEP(c) HAWK_FNMAT_IS_SEP(c)
+#define IS_SEP(c) HAWK_IS_PATH_SEP(c)
 #define IS_NIL(c) ((c) == '\0')
 #define IS_SEP_OR_NIL(c) (IS_SEP(c) || IS_NIL(c))
+#define IS_DRIVE(c) HAWK_IS_PATH_DRIVE(c)

 /* this macro only checks for top-level wild-cards among these.
 *  *, ?, [], !, -
@@ -34,8 +34,20 @@
 #include <hawk-ecs.h>
 #include <hawk-dir.h>
 #include <hawk-glob.h>
+#include <hawk-utl.h>

+#if defined(_WIN32)
+#	include <windows.h>
+#elif defined(__OS2__)
+#	define INCL_DOSERRORS
+#	define INCL_DOSFILEMGR
+#	include <os2.h>
+#elif defined(__DOS__)
+#	include <errno.h>
+#	include <io.h>
+#else
 #	include "syscall.h"
+#endif

 #define NO_RECURSION 1

@@ -49,9 +61,10 @@ typedef enum segment_type_t segment_type_t;


 #define IS_ESC(c) HAWK_FNMAT_IS_ESC(c)
-#define IS_SEP(c) HAWK_FNMAT_IS_SEP(c)
+#define IS_SEP(c) HAWK_IS_PATH_SEP(c)
 #define IS_NIL(c) ((c) == '\0')
 #define IS_SEP_OR_NIL(c) (IS_SEP(c) || IS_NIL(c))
+#define IS_DRIVE(c) HAWK_IS_PATH_DRIVE(c)

 /* this macro only checks for top-level wild-cards among these.
 *  *, ?, [], !, -
@@ -124,7 +124,7 @@ enum hawk_pio_env_mk_type_t
 {
 	HAWK_PIO_ENV_MK_BPP, /* P1 ... PN HAWK_NUL where P1 .. PN points to K=V */
 	HAWK_PIO_ENV_MK_BPN, /* K1=V\0K2=V\0\0 */
-	HAWK_PIO_ENV_MK_UPP,
+	HAWK_PIO_ENV_MK_UPN, /* K1=V\0K2=V\0\0 using hawk_uch_t */
 };

 typedef enum hawk_pio_env_mk_type_t hawk_pio_env_mk_type_t;
@@ -724,9 +724,10 @@ void hawk_fini (hawk_t* hawk);
 hawk_rbt_walk_t hawk_modtab_unload_module (hawk_rbt_t* rbt, hawk_rbt_pair_t* pair, void* ctx);
 int hawk_rtx_setnamedval (hawk_rtx_t* rtx, hawk_oow_t id, hawk_val_t* val);

-hawk_bch_t** hawk_rtx_commit_environ (
+void* hawk_rtx_commit_environ (
 	hawk_rtx_t*            rtx,
-	int         gbl_id
+	int                    gbl_id,
+	hawk_rtx_env_mk_type_t env_mk_type
 );

 #if defined(__cplusplus)
@@ -72,10 +72,8 @@ enum hawk_fnmat_flag_t
 #if defined(_WIN32) || defined(__OS2__) || defined(__DOS__)
 	/* i don't support escaping in these systems */
 #	define HAWK_FNMAT_IS_ESC(c) (0)
-#	define HAWK_FNMAT_IS_SEP(c) ((c) == '/' || (c) == '\\')
 #else
 #	define HAWK_FNMAT_IS_ESC(c) ((c) == '\\')
-#	define HAWK_FNMAT_IS_SEP(c) ((c) == '/')
 #endif

 #if defined(__cplusplus)
@@ -72,10 +72,8 @@ enum hawk_fnmat_flag_t
 #if defined(_WIN32) || defined(__OS2__) || defined(__DOS__)
 	/* i don't support escaping in these systems */
 #	define HAWK_FNMAT_IS_ESC(c) (0)
-#	define HAWK_FNMAT_IS_SEP(c) ((c) == '/' || (c) == '\\')
 #else
 #	define HAWK_FNMAT_IS_ESC(c) ((c) == '\\')
-#	define HAWK_FNMAT_IS_SEP(c) ((c) == '/')
 #endif

 #if defined(__cplusplus)
@@ -320,6 +320,23 @@ typedef hawk_bch_t* (*hawk_subst_for_bcs_t) (
 #	define hawk_subst_for_oocs_t hawk_subst_for_bcs_t
 #endif

+
+#if defined(_WIN32) || defined(__OS2__) || defined(__DOS__)
+#	define HAWK_IS_PATH_SEP(c) ((c) == '/' || (c) == '\\')
+#else
+#	define HAWK_IS_PATH_SEP(c) ((c) == '/')
+#endif
+
+
+#if defined(_WIN32) || defined(__OS2__) || defined(__DOS__)
+/* check if the first two letter is a drive specifier.
+ * useful on DOS/WIN/OS2 like system */
+#define HAWK_IS_PATH_DRIVE(s) \
+        (((s[0] >= 'A' && s[0] <= 'Z') || \
+          (s[0] >= 'a' && s[0] <= 'z')) && \
+         s[1] == ':')
+#endif
+
 #if defined(__cplusplus)
 extern "C" {
 #endif
@@ -912,7 +912,7 @@ enum hawk_rtx_env_mk_type_t
 {
 	HAWK_RTX_ENV_MK_BPP = HAWK_PIO_ENV_MK_BPP,
 	HAWK_RTX_ENV_MK_BPN = HAWK_PIO_ENV_MK_BPN,
-	HAWK_RTX_ENV_MK_UPP = HAWK_PIO_ENV_MK_UPP,
+	HAWK_RTX_ENV_MK_UPN = HAWK_PIO_ENV_MK_UPN,
 };
 typedef enum hawk_rtx_env_mk_type_t hawk_rtx_env_mk_type_t;

@@ -46,7 +46,7 @@
 #define KTOB(htb,len) ((len) * (htb)->scale[HAWK_HTB_KEY])
 #define VTOB(htb,len) ((len) * (htb)->scale[HAWK_HTB_VAL])

-HAWK_INLINE pair_t* hawk_htb_allocpair (hawk_htb_t* htb, void* kptr, hawk_oow_t klen, void* vptr, hawk_oow_t vlen)
+static HAWK_INLINE_ALWAYS pair_t* alloc_pair (hawk_htb_t* htb, void* kptr, hawk_oow_t klen, void* vptr, hawk_oow_t vlen)
 {
 	pair_t* n;
 	copier_t kcop, vcop;
@@ -115,7 +115,7 @@ HAWK_INLINE pair_t* hawk_htb_allocpair (hawk_htb_t* htb, void* kptr, hawk_oow_t
 	return n;
 }

-HAWK_INLINE void hawk_htb_freepair (hawk_htb_t* htb, pair_t* pair)
+static HAWK_INLINE_ALWAYS void free_pair (hawk_htb_t* htb, pair_t* pair)
 {
 	if (htb->style->freeer[HAWK_HTB_KEY] != HAWK_NULL)
 		htb->style->freeer[HAWK_HTB_KEY](htb, KPTR(pair), KLEN(pair));
@@ -124,7 +124,17 @@ HAWK_INLINE void hawk_htb_freepair (hawk_htb_t* htb, pair_t* pair)
 	hawk_gem_freemem(htb->gem, pair);
 }

-static HAWK_INLINE pair_t* change_pair_val (hawk_htb_t* htb, pair_t* pair, void* vptr, hawk_oow_t vlen)
+pair_t* hawk_htb_allocpair (hawk_htb_t* htb, void* kptr, hawk_oow_t klen, void* vptr, hawk_oow_t vlen)
+{
+	return alloc_pair(htb, kptr, klen, vptr, vlen);
+}
+
+void hawk_htb_freepair (hawk_htb_t* htb, pair_t* pair)
+{
+	free_pair(htb, pair);
+}
+
+static HAWK_INLINE_ALWAYS pair_t* change_pair_val (hawk_htb_t* htb, pair_t* pair, void* vptr, hawk_oow_t vlen)
 {
 	if (VPTR(pair) == vptr && VLEN(pair) == vlen)
 	{
@@ -157,9 +167,9 @@ static HAWK_INLINE pair_t* change_pair_val (hawk_htb_t* htb, pair_t* pair, void*
 			else
 			{
 				/* need to reconstruct the pair */
-				pair_t* p = hawk_htb_allocpair(htb, KPTR(pair), KLEN(pair), vptr, vlen);
+				pair_t* p = alloc_pair(htb, KPTR(pair), KLEN(pair), vptr, vlen);
 				if (HAWK_UNLIKELY(!p)) return HAWK_NULL;
-				hawk_htb_freepair(htb, pair);
+				free_pair(htb, pair);
 				return p;
 			}
 		}
@@ -436,7 +446,7 @@ static HAWK_INLINE int reorganize (hawk_htb_t* htb)
 #define ENSERT 3
 #define INSERT 4

-static HAWK_INLINE pair_t* insert (hawk_htb_t* htb, void* kptr, hawk_oow_t klen, void* vptr, hawk_oow_t vlen, int opt)
+static HAWK_INLINE_ALWAYS pair_t* insert (hawk_htb_t* htb, void* kptr, hawk_oow_t klen, void* vptr, hawk_oow_t vlen, int opt)
 {
 	pair_t* pair, * p, * prev, * next;
 	hawk_oow_t hc;
@@ -507,7 +517,7 @@ static HAWK_INLINE pair_t* insert (hawk_htb_t* htb, void* kptr, hawk_oow_t klen,

 	HAWK_ASSERT(pair == HAWK_NULL);

-	pair = hawk_htb_allocpair(htb, kptr, klen, vptr, vlen);
+	pair = alloc_pair(htb, kptr, klen, vptr, vlen);
 	if (HAWK_UNLIKELY(!pair)) return HAWK_NULL; /* error */

 	NEXT(pair) = htb->bucket[hc];
@@ -617,7 +627,7 @@ int hawk_htb_delete (hawk_htb_t* htb, const void* kptr, hawk_oow_t klen)
 				htb->bucket[hc] = NEXT(pair);
 			else NEXT(prev) = NEXT(pair);

-			hawk_htb_freepair(htb, pair);
+			free_pair(htb, pair);
 			htb->size--;
 			htb->rev++;

@@ -645,7 +655,7 @@ void hawk_htb_clear (hawk_htb_t* htb)
 		while (pair)
 		{
 			next = NEXT(pair);
-			hawk_htb_freepair(htb, pair);
+			free_pair(htb, pair);
 			htb->size--;
 			pair = next;
 		}
@@ -29,7 +29,10 @@

 #if defined(_WIN32)
 #	include <windows.h>
+#	include <io.h>
+#	include <fcntl.h>
 #	include <process.h>
+#	include <tlhelp32.h>
 #	include <tchar.h>
 #elif defined(__OS2__)
 #	define INCL_DOSPROCESS
@@ -44,6 +47,7 @@
 #	endif

 #	include "syscall.h"
+#	include <sys/utsname.h>
 #	if defined(HAVE_SYS_EPOLL_H)
 #		include <sys/epoll.h>
 #		if defined(HAVE_EPOLL_CREATE)
@@ -51,10 +55,12 @@
 #		endif
 #	endif

-#	include <termios.h>
 #	include <sys/socket.h>

-#	define ENABLE_SYSLOG
+#	define ENABLE_TERMIOS
+#	include <termios.h>
+
+#	define ENABLE_SYSLOG /* enable libc's openlog, closelog, syslog */
 #	include <syslog.h>

 #endif
@@ -332,6 +338,42 @@ static void set_errmsg_on_sys_list (hawk_rtx_t* rtx, sys_list_t* sys_list, const
 	}
 }

+static const hawk_bch_t* get_machine_name_for_build (void)
+{
+#if defined(__x86_64__) || defined(_M_X64)
+	return "x86_64";
+#elif defined(__i386__) || defined(_M_IX86)
+	return "x86";
+#elif defined(__aarch64__) || defined(_M_ARM64)
+	return "aarch64";
+#elif defined(__arm__) || defined(_M_ARM)
+	return "arm";
+#elif defined(__powerpc64__) || defined(__ppc64__)
+	return "ppc64";
+#elif defined(__powerpc__) || defined(__ppc__) || defined(_M_PPC)
+	return "ppc";
+#elif defined(__mips64)
+	return "mips64";
+#elif defined(__mips__)
+	return "mips";
+#elif defined(__riscv) && (__riscv_xlen == 64)
+	return "riscv64";
+#elif defined(__riscv) && (__riscv_xlen == 32)
+	return "riscv32";
+#elif defined(__sparc64__)
+	return "sparc64";
+#elif defined(__sparc__)
+	return "sparc";
+#else
+	return "unknown";
+#endif
+}
+
+static void copy_bcstr_to_oocstr (hawk_rtx_t* rtx, hawk_ooch_t* buf, hawk_oow_t capa, const hawk_bch_t* str)
+{
+	hawk_rtx_fmttooocstr(rtx, buf, capa, HAWK_T("%hs"), str);
+}
+
 /* ------------------------------------------------------------------------ */

 static sys_node_t* new_sys_node_fd (hawk_rtx_t* rtx, sys_list_t* list, int fd)
@@ -1027,6 +1069,7 @@ static int fnc_fcntl (hawk_rtx_t* rtx, const hawk_fnc_info_t* fi)
 	sys_node = get_sys_list_node_with_arg(rtx, sys_list, hawk_rtx_getarg(rtx, 0), SYS_NODE_DATA_TYPE_FILE | SYS_NODE_DATA_TYPE_SCK, &rx);
 	if (sys_node)
 	{
+#if defined(F_GETFD) && defined(F_GETFL) && defined(F_SETFD) && defined(F_SETFL)
 		hawk_int_t  cmd;

 		if (hawk_rtx_valtoint_inline(rtx, hawk_rtx_getarg(rtx, 1), &cmd) <= -1)
@@ -1068,6 +1111,9 @@ static int fnc_fcntl (hawk_rtx_t* rtx, const hawk_fnc_info_t* fi)
 				rx = set_error_on_sys_list(rtx, sys_list, HAWK_EINVAL, HAWK_NULL);
 				break;
 		}
+#else
+		rx = set_error_on_sys_list(rtx, sys_list, HAWK_ENOSUP, HAWK_NULL);
+#endif
 	}

 done:
@@ -1096,6 +1142,7 @@ static int fnc_flock (hawk_rtx_t* rtx, const hawk_fnc_info_t* fi)
 	hawk_int_t rx;
 	hawk_val_t* retv;

+#if defined(F_RDLCK) && defined(F_WRLCK) && defined(F_UNLCK) && defined(F_GETLK) && defined(F_SETLKW) && defined(F_SETLK)
 	HAWK_STATIC_ASSERT(FLOCK_GET != F_RDLCK);
 	HAWK_STATIC_ASSERT(FLOCK_GET != F_WRLCK);
 	HAWK_STATIC_ASSERT(FLOCK_GET != F_UNLCK);
@@ -1154,6 +1201,10 @@ static int fnc_flock (hawk_rtx_t* rtx, const hawk_fnc_info_t* fi)
 			rx = fl.l_type; /* for get, it returns the lock type */
 		}
 	}
+#else
+	sys_list = rtx_to_sys_list(rtx, fi);
+	rx = set_error_on_sys_list(rtx, sys_list, HAWK_ENOSUP, HAWK_NULL);
+#endif

 done:
 	retv = hawk_rtx_makeintval_inline(rtx, rx);
@@ -1217,6 +1268,7 @@ static int fnc_tcgetattr (hawk_rtx_t* rtx, const hawk_fnc_info_t* fi) /* this is
 	sys_node = get_sys_list_node_with_arg(rtx, sys_list, hawk_rtx_getarg(rtx, 0), SYS_NODE_DATA_TYPE_FILE, &rx);
 	if (sys_node)
 	{
+#if defined(ENABLE_TERMIOS)
 		struct termios t;
 		hawk_val_map_data_t md[5];
 		hawk_bcs_t c_cc;
@@ -1275,6 +1327,9 @@ static int fnc_tcgetattr (hawk_rtx_t* rtx, const hawk_fnc_info_t* fi) /* this is
 		fail:
 			rx = copy_error_to_sys_list(rtx, sys_list);
 		}
+#else
+		rx = set_error_on_sys_list(rtx, sys_list, HAWK_ENOSUP, HAWK_NULL);
+#endif
 	}

 done:
@@ -1311,6 +1366,7 @@ static int fnc_tcsetattr (hawk_rtx_t* rtx, const hawk_fnc_info_t* fi) /* this is
 	sys_node = get_sys_list_node_with_arg(rtx, sys_list, hawk_rtx_getarg(rtx, 0), SYS_NODE_DATA_TYPE_FILE, &rx);
 	if (sys_node)
 	{
+#if defined(ENABLE_TERMIOS)
 		struct termios t;
 		hawk_map_itr_t itr;
 		hawk_map_pair_t* pair;
@@ -1391,6 +1447,9 @@ static int fnc_tcsetattr (hawk_rtx_t* rtx, const hawk_fnc_info_t* fi) /* this is
 			set_error_on_sys_list_with_errno(rtx, sys_list, HAWK_NULL);
 			goto done;
 		}
+#else
+		rx = set_error_on_sys_list(rtx, sys_list, HAWK_ENOSUP, HAWK_NULL);
+#endif
 	}

 done:
@@ -1423,6 +1482,7 @@ static int fnc_tcsetraw (hawk_rtx_t* rtx, const hawk_fnc_info_t* fi)
 	sys_node = get_sys_list_node_with_arg(rtx, sys_list, hawk_rtx_getarg(rtx, 0), SYS_NODE_DATA_TYPE_FILE, &rx);
 	if (sys_node)
 	{
+#if defined(ENABLE_TERMIOS)
 		struct termios t;

 		rx = tcgetattr(sys_node->ctx.u.file.fd, &t);
@@ -1441,6 +1501,9 @@ static int fnc_tcsetraw (hawk_rtx_t* rtx, const hawk_fnc_info_t* fi)
 			set_error_on_sys_list_with_errno(rtx, sys_list, HAWK_NULL);
 			goto done;
 		}
+#else
+		rx = set_error_on_sys_list(rtx, sys_list, HAWK_ENOSUP, HAWK_NULL);
+#endif
 	}

 done:
@@ -1462,6 +1525,7 @@ static int fnc_tcflush (hawk_rtx_t* rtx, const hawk_fnc_info_t* fi)
 	sys_node = get_sys_list_node_with_arg(rtx, sys_list, hawk_rtx_getarg(rtx, 0), SYS_NODE_DATA_TYPE_FILE, &rx);
 	if (sys_node)
 	{
+#if defined(ENABLE_TERMIOS)
 		hawk_int_t qs;

 		if (hawk_rtx_valtoint_inline(rtx, hawk_rtx_getarg(rtx, 1), &qs) <= -1) qs = TCIOFLUSH;
@@ -1472,6 +1536,9 @@ static int fnc_tcflush (hawk_rtx_t* rtx, const hawk_fnc_info_t* fi)
 			set_error_on_sys_list_with_errno(rtx, sys_list, HAWK_NULL);
 			goto done;
 		}
+#else
+		rx = set_error_on_sys_list(rtx, sys_list, HAWK_ENOSUP, HAWK_NULL);
+#endif
 	}

 done:
@@ -1580,6 +1647,9 @@ static int fnc_pipe (hawk_rtx_t* rtx, const hawk_fnc_info_t* fi)

 	if (hawk_rtx_getnargs(rtx) >= 3 && (hawk_rtx_valtoint_inline(rtx, hawk_rtx_getarg(rtx, 2), &flags) <= -1 || flags < 0)) flags = 0;

+#if defined(_WIN32)
+	rx = set_error_on_sys_list(rtx, sys_list, HAWK_ENOSUP, HAWK_NULL);
+#else
 #if defined(HAVE_PIPE2)
 	if (pipe2(fds, flags) >= 0)
 #else
@@ -1655,6 +1725,7 @@ static int fnc_pipe (hawk_rtx_t* rtx, const hawk_fnc_info_t* fi)
 	{
 		rx = set_error_on_sys_list_with_errno(rtx, sys_list, HAWK_NULL);
 	}
+#endif

 	hawk_rtx_setretval(rtx, hawk_rtx_makeintval_inline(rtx, rx));
 	return 0;
@@ -1681,9 +1752,13 @@ static int fnc_fchown (hawk_rtx_t* rtx, const hawk_fnc_info_t* fi)
 		}
 		else
 		{
+#if defined(_WIN32)
+			rx = set_error_on_sys_list(rtx, sys_list, HAWK_ENOSUP, HAWK_NULL);
+#else
 			rx = fchown(sys_node->ctx.u.file.fd, uid, gid) <= -1?
 				set_error_on_sys_list_with_errno(rtx, sys_list, HAWK_NULL):
 				ERRNUM_TO_RC(HAWK_ENOERR);
+#endif
 		}
 	}

@@ -1709,9 +1784,13 @@ static int fnc_fchmod (hawk_rtx_t* rtx, const hawk_fnc_info_t* fi)
 		}
 		else
 		{
+#if defined(_WIN32)
+			rx = set_error_on_sys_list(rtx, sys_list, HAWK_ENOSUP, HAWK_NULL);
+#else
 			rx = fchmod(sys_node->ctx.u.file.fd, mode) <= -1?
 				set_error_on_sys_list_with_errno(rtx, sys_list, HAWK_NULL):
 				ERRNUM_TO_RC(HAWK_ENOERR);
+#endif
 		}
 	}

@@ -1922,8 +2001,8 @@ static int fnc_wait (hawk_rtx_t* rtx, const hawk_fnc_info_t* fi)
 	sys_list_t* sys_list = rtx_to_sys_list(rtx, fi);

 	nargs = hawk_rtx_getnargs(rtx);
-	if (nargs >= 3 && hawk_rtx_valtoint_inline(rtx, hawk_rtx_getarg(rtx, 2), &opts) <= -1) goto fail;
-	if (hawk_rtx_valtoint_inline(rtx, hawk_rtx_getarg(rtx, 0), &pid) <= -1) goto fail;
+	if (nargs >= 3 && hawk_rtx_valtoint_inline(rtx, hawk_rtx_getarg(rtx, 2), &opts) <= -1) goto oops;
+	if (hawk_rtx_valtoint_inline(rtx, hawk_rtx_getarg(rtx, 0), &pid) <= -1) goto oops;

 #if defined(_WIN32)
 	/* TOOD: implement this*/
@@ -1951,16 +2030,12 @@ static int fnc_wait (hawk_rtx_t* rtx, const hawk_fnc_info_t* fi)
 			int x;

 			sv = hawk_rtx_makeintval_inline(rtx, status);
-			if (!sv) goto fail;
+			if (!sv) goto oops;

 			hawk_rtx_refupval_inline(rtx, sv);
 			x = hawk_rtx_setrefval(rtx, (hawk_val_ref_t*)hawk_rtx_getarg(rtx, 1), sv);
 			hawk_rtx_refdownval_inline(rtx, sv);
-			if (x <= -1)
-			{
-			fail:
-				rx = copy_error_to_sys_list(rtx, sys_list);
-			}
+			if (x <= -1) goto oops;
 		}
 	}
 #endif
@@ -1970,13 +2045,24 @@ static int fnc_wait (hawk_rtx_t* rtx, const hawk_fnc_info_t* fi)

 	hawk_rtx_setretval(rtx, retv);
 	return 0;
+
+oops:
+	rx = copy_error_to_sys_list(rtx, sys_list);
+	retv = hawk_rtx_makeintval_inline(rtx, rx);
+	if (!retv) return -1;
+	hawk_rtx_setretval(rtx, retv);
+	return 0;
 }

 static int fnc_wifexited (hawk_rtx_t* rtx, const hawk_fnc_info_t* fi)
 {
 	hawk_int_t wstatus;
 	int rv;
+#if defined(WIFEXITED)
 	rv = (hawk_rtx_valtoint_inline(rtx, hawk_rtx_getarg(rtx, 0), &wstatus) <= -1)? 0: !!WIFEXITED(wstatus);
+#else
+	rv = 0;
+#endif
 	hawk_rtx_setretval(rtx, hawk_rtx_makeintval_inline(rtx, rv));
 	return 0;
 }
@@ -1987,7 +2073,11 @@ static int fnc_wexitstatus (hawk_rtx_t* rtx, const hawk_fnc_info_t* fi)
 	int rv;

 	hawk_val_t* retv;
+#if defined(WEXITSTATUS)
 	rv = (hawk_rtx_valtoint_inline(rtx, hawk_rtx_getarg(rtx, 0), &wstatus) <= -1)? -1: WEXITSTATUS(wstatus);
+#else
+	rv = -1;
+#endif

 	retv = hawk_rtx_makeintval_inline(rtx, rv);
 	if (!retv) return -1;
@@ -2000,7 +2090,11 @@ static int fnc_wifsignaled (hawk_rtx_t* rtx, const hawk_fnc_info_t* fi)
 {
 	hawk_int_t wstatus;
 	int rv;
+#if defined(WIFSIGNALED)
 	rv = (hawk_rtx_valtoint_inline(rtx, hawk_rtx_getarg(rtx, 0), &wstatus) <= -1)? 0: !!WIFSIGNALED(wstatus);
+#else
+	rv = 0;
+#endif
 	hawk_rtx_setretval(rtx, hawk_rtx_makeintval_inline(rtx, rv));
 	return 0;
 }
@@ -2011,7 +2105,11 @@ static int fnc_wtermsig (hawk_rtx_t* rtx, const hawk_fnc_info_t* fi)
 	int rv;

 	hawk_val_t* retv;
+#if defined(WTERMSIG)
 	rv = (hawk_rtx_valtoint_inline(rtx, hawk_rtx_getarg(rtx, 0), &wstatus) <= -1)? -1: WTERMSIG(wstatus);
+#else
+	rv = -1;
+#endif

 	retv = hawk_rtx_makeintval_inline(rtx, rv);
 	if (!retv) return -1;
@@ -2271,6 +2369,147 @@ static int fnc_gettid (hawk_rtx_t* rtx, const hawk_fnc_info_t* fi)
 	return 0;
 }

+static int fnc_uname (hawk_rtx_t* rtx, const hawk_fnc_info_t* fi)
+{
+	sys_list_t* sys_list = rtx_to_sys_list(rtx, fi);
+	hawk_val_t* retv;
+	hawk_ooch_t sysname[64], nodename[256], release[64], version[128], machine[64];
+
+#if defined(_WIN32)
+	OSVERSIONINFOEXA vi;
+	SYSTEM_INFO si;
+	DWORD nsz;
+
+	hawk_copy_oocstr(sysname, HAWK_COUNTOF(sysname), HAWK_T("Windows"));
+	hawk_copy_oocstr(nodename, HAWK_COUNTOF(nodename), HAWK_T("unknown"));
+	hawk_copy_oocstr(release, HAWK_COUNTOF(release), HAWK_T("unknown"));
+	hawk_copy_oocstr(version, HAWK_COUNTOF(version), HAWK_T("unknown"));
+	hawk_copy_oocstr(machine, HAWK_COUNTOF(machine), HAWK_T("unknown"));
+
+	nsz = HAWK_COUNTOF(nodename);
+#if defined(HAWK_OOCH_IS_UCH)
+	GetComputerNameW((LPWSTR)nodename, &nsz);
+#else
+	GetComputerNameA((LPSTR)nodename, &nsz);
+#endif
+
+	HAWK_MEMSET(&vi, 0, HAWK_SIZEOF(vi));
+	vi.dwOSVersionInfoSize = HAWK_SIZEOF(vi);
+	if (GetVersionExA((OSVERSIONINFOA*)&vi))
+	{
+		hawk_rtx_fmttooocstr(rtx, release, HAWK_COUNTOF(release), HAWK_T("%u.%u.%u"),
+			(unsigned)vi.dwMajorVersion, (unsigned)vi.dwMinorVersion, (unsigned)vi.dwBuildNumber);
+		if (vi.szCSDVersion[0] != '\0')
+		{
+			hawk_rtx_fmttooocstr(rtx, version, HAWK_COUNTOF(version), HAWK_T("build %u %hs"),
+				(unsigned)vi.dwBuildNumber, vi.szCSDVersion);
+		}
+		else
+		{
+			hawk_rtx_fmttooocstr(rtx, version, HAWK_COUNTOF(version), HAWK_T("build %u"),
+				(unsigned)vi.dwBuildNumber);
+		}
+	}
+
+	GetSystemInfo(&si);
+	switch (si.wProcessorArchitecture)
+	{
+		case PROCESSOR_ARCHITECTURE_AMD64:
+			hawk_copy_oocstr(machine, HAWK_COUNTOF(machine), HAWK_T("x86_64"));
+			break;
+		case PROCESSOR_ARCHITECTURE_INTEL:
+			hawk_copy_oocstr(machine, HAWK_COUNTOF(machine), HAWK_T("x86"));
+			break;
+		case PROCESSOR_ARCHITECTURE_ARM:
+			hawk_copy_oocstr(machine, HAWK_COUNTOF(machine), HAWK_T("arm"));
+			break;
+		case PROCESSOR_ARCHITECTURE_ARM64:
+			hawk_copy_oocstr(machine, HAWK_COUNTOF(machine), HAWK_T("aarch64"));
+			break;
+		case PROCESSOR_ARCHITECTURE_IA64:
+			hawk_copy_oocstr(machine, HAWK_COUNTOF(machine), HAWK_T("ia64"));
+			break;
+		default:
+			copy_bcstr_to_oocstr(rtx, machine, HAWK_COUNTOF(machine), get_machine_name_for_build());
+			break;
+	}
+
+#elif defined(__OS2__)
+	hawk_copy_oocstr(sysname, HAWK_COUNTOF(sysname), HAWK_T("OS/2"));
+	hawk_copy_oocstr(nodename, HAWK_COUNTOF(nodename), HAWK_T("unknown"));
+	hawk_copy_oocstr(release, HAWK_COUNTOF(release), HAWK_T("unknown"));
+	hawk_copy_oocstr(version, HAWK_COUNTOF(version), HAWK_T("unknown"));
+	copy_bcstr_to_oocstr(rtx, machine, HAWK_COUNTOF(machine), get_machine_name_for_build());
+
+#elif defined(__DOS__)
+	hawk_copy_oocstr(sysname, HAWK_COUNTOF(sysname), HAWK_T("DOS"));
+	hawk_copy_oocstr(nodename, HAWK_COUNTOF(nodename), HAWK_T("unknown"));
+	hawk_copy_oocstr(release, HAWK_COUNTOF(release), HAWK_T("unknown"));
+	hawk_copy_oocstr(version, HAWK_COUNTOF(version), HAWK_T("unknown"));
+	copy_bcstr_to_oocstr(rtx, machine, HAWK_COUNTOF(machine), get_machine_name_for_build());
+
+#else
+	struct utsname u;
+
+	if (uname(&u) <= -1)
+	{
+		hawk_copy_oocstr(sysname, HAWK_COUNTOF(sysname), HAWK_T("Linux/Unix"));
+		hawk_copy_oocstr(nodename, HAWK_COUNTOF(nodename), HAWK_T("unknown"));
+		hawk_copy_oocstr(release, HAWK_COUNTOF(release), HAWK_T("unknown"));
+		hawk_copy_oocstr(version, HAWK_COUNTOF(version), HAWK_T("unknown"));
+		copy_bcstr_to_oocstr(rtx, machine, HAWK_COUNTOF(machine), get_machine_name_for_build());
+	}
+	else
+	{
+		copy_bcstr_to_oocstr(rtx, sysname, HAWK_COUNTOF(sysname), (const hawk_bch_t*)u.sysname);
+		copy_bcstr_to_oocstr(rtx, nodename, HAWK_COUNTOF(nodename), (const hawk_bch_t*)u.nodename);
+		copy_bcstr_to_oocstr(rtx, release, HAWK_COUNTOF(release), (const hawk_bch_t*)u.release);
+		copy_bcstr_to_oocstr(rtx, version, HAWK_COUNTOF(version), (const hawk_bch_t*)u.version);
+		copy_bcstr_to_oocstr(rtx, machine, HAWK_COUNTOF(machine), (const hawk_bch_t*)u.machine);
+	}
+#endif
+
+	{
+		hawk_val_map_data_t md[5];
+		HAWK_MEMSET(md, 0, HAWK_SIZEOF(md));
+
+		md[0].key.ptr = HAWK_T("sysname");
+		md[0].key.len = 7;
+		md[0].type = HAWK_VAL_MAP_DATA_OOCSTR;
+		md[0].vptr = sysname;
+
+		md[1].key.ptr = HAWK_T("nodename");
+		md[1].key.len = 8;
+		md[1].type = HAWK_VAL_MAP_DATA_OOCSTR;
+		md[1].vptr = nodename;
+
+		md[2].key.ptr = HAWK_T("release");
+		md[2].key.len = 7;
+		md[2].type = HAWK_VAL_MAP_DATA_OOCSTR;
+		md[2].vptr = release;
+
+		md[3].key.ptr = HAWK_T("version");
+		md[3].key.len = 7;
+		md[3].type = HAWK_VAL_MAP_DATA_OOCSTR;
+		md[3].vptr = version;
+
+		md[4].key.ptr = HAWK_T("machine");
+		md[4].key.len = 7;
+		md[4].type = HAWK_VAL_MAP_DATA_OOCSTR;
+		md[4].vptr = machine;
+
+		retv = hawk_rtx_makemapvalwithdata(rtx, md, HAWK_COUNTOF(md));
+		if (HAWK_UNLIKELY(!retv))
+		{
+			copy_error_to_sys_list(rtx, sys_list);
+			return -1;
+		}
+	}
+
+	hawk_rtx_setretval(rtx, retv);
+	return 0;
+}
+
 static int fnc_getppid (hawk_rtx_t* rtx, const hawk_fnc_info_t* fi)
 {
 	hawk_int_t rx;
@@ -2282,7 +2521,7 @@ static int fnc_getppid (hawk_rtx_t* rtx, const hawk_fnc_info_t* fi)
 	HANDLE ps;
 	PROCESSENTRY32 p;

-	pid = GetCurrentPorcessId();
+	pid = GetCurrentProcessId();
 	ps = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
 	if (ps == INVALID_HANDLE_VALUE)
 	{
@@ -2292,7 +2531,7 @@ static int fnc_getppid (hawk_rtx_t* rtx, const hawk_fnc_info_t* fi)
 	{
 		rx = set_error_on_sys_list(rtx, sys_list, HAWK_ENOENT, HAWK_NULL);

-		p.dwSize = HAWK_SZIEOF(p);
+		p.dwSize = HAWK_SIZEOF(p);
 		if (Process32First(ps, &p))
 		{
 			do
@@ -2705,7 +2944,7 @@ static int fnc_strftime (hawk_rtx_t* rtx, const hawk_fnc_info_t* fi)
 		#if defined(HAVE_GMTIME_R)
 			tmx = gmtime_r(&t, &tm);
 		#else
-			tmx = gmtime(&t.sec);
+			tmx = gmtime(&t);
 		#endif
 		}
 		else
@@ -2714,7 +2953,7 @@ static int fnc_strftime (hawk_rtx_t* rtx, const hawk_fnc_info_t* fi)
 		#if defined(HAVE_LOCALTIME_R)
 			tmx = localtime_r(&t, &tm);
 		#else
-			tmx = localtime(&t.sec);
+			tmx = localtime(&t);
 		#endif
 		}

@@ -3035,7 +3274,7 @@ static int fnc_system (hawk_rtx_t* rtx, const hawk_fnc_info_t* fi)
 		0,
 		str,
 		HAWK_PIO_SHELL | HAWK_PIO_NOCLOEXEC,
-		(rtx->rio.env_mk? pio_env_maker: HAWK_NULL),
+		(rtx->rio.env_mk? pio_env_maker: (hawk_pio_env_mk_t)HAWK_NULL),
 		rtx
 	);

@@ -4412,17 +4651,25 @@ static int fnc_accept (hawk_rtx_t* rtx, const hawk_fnc_info_t* fi)
 	#if defined(HAVE_ACCEPT4)
 		/* nothing to do */
 	#else
+	#if defined(F_GETFD)
 		fd_flags = fcntl(fd, F_GETFD, 0);
 		if (fd_flags >= 0)
 		{
 		#if defined(FD_CLOEXEC) && defined(SOCK_CLOEXEC)
 			if (flags & SOCK_CLOEXEC) fd_flags |= FD_CLOEXEC;
 		#endif
-		#if defined(O_NONBLOCK) && defined(SOCK_NONBLOCK)
-			if (flags & SOCK_NONBLOCK) fd_flags |= O_NONBLOCK;
-		#endif
+		#if defined(F_SETFD)
 			fcntl(fd, F_SETFD, fd_flags);
+		#endif
 		}
+	#endif
+	#if defined(F_GETFL) && defined(F_SETFL) && defined(O_NONBLOCK) && defined(SOCK_NONBLOCK)
+		if (flags & SOCK_NONBLOCK)
+		{
+			fd_flags = fcntl(fd, F_GETFL, 0);
+			if (fd_flags >= 0) fcntl(fd, F_SETFL, fd_flags | O_NONBLOCK);
+		}
+	#endif
 	#endif

 		if (hawk_rtx_getnargs(rtx) >= 3)
@@ -4556,7 +4803,7 @@ you can specify the remote:// with /dev/log or @/dev/log.
 */
 static void open_remote_log_socket (hawk_rtx_t* rtx, rtx_data_t* rdp)
 {
-	int sck, flags;
+	int sck;
 	int domain = hawk_skad_get_family(&rdp->log.skad);
 	int type = SOCK_DGRAM;

@@ -4586,15 +4833,32 @@ open_socket:
 	#endif
 	}

+#if defined(F_GETFD)
+	{
+		int flags;
+
 		flags = fcntl(sck, F_GETFD, 0);
 		if (flags <= -1) return;
 #if defined(FD_CLOEXEC)
 		flags |= FD_CLOEXEC;
 #endif
+	#if defined(F_SETFD)
+		if (fcntl(sck, F_SETFD, flags) <= -1) return;
+	#endif
+	}
+#endif
+#if defined(F_GETFL) && defined(F_SETFL) && defined(O_NONBLOCK)
+	{
+		int flags;
+
+		flags = fcntl(sck, F_GETFL, 0);
+		if (flags <= -1) return;
 #if defined(O_NONBLOCK)
 		flags |= O_NONBLOCK;
 #endif
-	if (fcntl(sck, F_SETFD, flags) <= -1) return;
+		if (fcntl(sck, F_SETFL, flags) <= -1) return;
+	}
+#endif

 done:
 	rdp->log.sck = sck;
@@ -4709,7 +4973,9 @@ static int fnc_openlog (hawk_rtx_t* rtx, const hawk_fnc_info_t* fi)
 	else if (rdp->log.type == SYSLOG_REMOTE)
 	{
 		rdp->log.skad = skad;
+	#if defined(LOG_NDELAY)
 		if ((opt & LOG_NDELAY) && rdp->log.sck <= -1) open_remote_log_socket(rtx, rdp);
+	#endif
 	}

 	rx = ERRNUM_TO_RC(HAWK_ENOERR);
@@ -6036,6 +6302,7 @@ static hawk_mod_fnc_tab_t fnctab[] =
 	{ HAWK_T("tcgetattr"),   { { 2, 2, HAWK_T("vr")    }, fnc_tcgetattr,   0  } },
 	{ HAWK_T("tcsetattr"),   { { 3, 3, HAWK_NULL       }, fnc_tcsetattr,   0  } },
 	{ HAWK_T("tcsetraw"),    { { 1, 1, HAWK_NULL       }, fnc_tcsetraw,    0  } },
+	{ HAWK_T("uname"),       { { 0, 0, HAWK_NULL       }, fnc_uname,       0  } },
 	{ HAWK_T("unlink"),      { { 1, 1, HAWK_NULL       }, fnc_unlink,      0  } },
 	{ HAWK_T("unpack"),      { { 2, A_MAX, HAWK_T("vvr")  }, fnc_unpack,   0  } },
 	{ HAWK_T("wait"),        { { 1, 3, HAWK_T("vrv")   }, fnc_wait,        0  } },
@@ -6082,18 +6349,30 @@ static hawk_mod_int_tab_t inttab[] =

 	{ HAWK_T("DIR_SORT"),           { HAWK_DIR_SORT } },

+#if defined(FD_CLOEXEC)
 	{ HAWK_T("FD_CLOEXEC"),         { FD_CLOEXEC } },
+#endif

+#if defined(F_RDLCK) && defined(F_UNLCK) && defined(F_WRLCK)
 	{ HAWK_T("FLOCK_GET"),          { FLOCK_GET } }, /* bitwise-OR with another FLOCK_READ/WRITE/WAIT value */
 	{ HAWK_T("FLOCK_READ"),         { F_RDLCK } },
 	{ HAWK_T("FLOCK_UNLOCK"),       { F_UNLCK } },
 	{ HAWK_T("FLOCK_WAIT"),         { FLOCK_WAIT } }, /* bitwise-OR with another FLOCK_READ/WRITE/WAIT value */
 	{ HAWK_T("FLOCK_WRITE"),        { F_WRLCK } },
+#endif

+#if defined(F_GETFD)
 	{ HAWK_T("F_GETFD"),            { F_GETFD } },
+#endif
+#if defined(F_GETFL)
 	{ HAWK_T("F_GETFL"),            { F_GETFL } },
+#endif
+#if defined(F_SETFD)
 	{ HAWK_T("F_SETFD"),            { F_SETFD } },
+#endif
+#if defined(F_SETFL)
 	{ HAWK_T("F_SETFL"),            { F_SETFL } },
+#endif

 	{ HAWK_T("IFCFG_IN4"),          { HAWK_IFCFG_IN4 } },
 	{ HAWK_T("IFCFG_IN6"),          { HAWK_IFCFG_IN6 } },
@@ -6125,7 +6404,9 @@ static hawk_mod_int_tab_t inttab[] =
 	{ HAWK_T("LOG_FAC_UUCP"),       { LOG_UUCP } },

 	{ HAWK_T("LOG_OPT_CONS"),       { LOG_CONS } },
+#if defined(LOG_NDELAY)
 	{ HAWK_T("LOG_OPT_NDELAY"),     { LOG_NDELAY } },
+#endif
 	{ HAWK_T("LOG_OPT_NOWAIT"),     { LOG_NOWAIT } },
 	{ HAWK_T("LOG_OPT_PID"),        { LOG_PID } },

@@ -6281,116 +6562,264 @@ static hawk_mod_int_tab_t inttab[] =
 #if defined(VDISCARD)
 	{ HAWK_T("TC_CC_VDISCARD"),  { VDISCARD } },
 #endif
+#if defined(VEOF)
 	{ HAWK_T("TC_CC_VEOF"),      { VEOF } },
+#endif
+#if defined(VEOL)
 	{ HAWK_T("TC_CC_VEOL"),      { VEOL } },
+#endif
+#if defined(VEOL2)
 	{ HAWK_T("TC_CC_VEOL2"),     { VEOL2 } },
+#endif
+#if defined(VERASE)
 	{ HAWK_T("TC_CC_VERASE"),    { VERASE } },
+#endif
+#if defined(VINTR)
 	{ HAWK_T("TC_CC_VINTR"),     { VINTR } },
+#endif
+#if defined(VKILL)
 	{ HAWK_T("TC_CC_VKILL"),     { VKILL } },
+#endif
 #if defined(VLNEXT)
 	{ HAWK_T("TC_CC_VLNEXT"),    { VLNEXT } },
 #endif
+#if defined(VMIN)
 	{ HAWK_T("TC_CC_VMIN"),      { VMIN } },
+#endif
+#if defined(VQUIT)
 	{ HAWK_T("TC_CC_VQUIT"),     { VQUIT } },
+#endif
 #if defined(VREPRINT)
 	{ HAWK_T("TC_CC_VREPRINT"),  { VREPRINT } },
 #endif
+#if defined(VSTART)
 	{ HAWK_T("TC_CC_VSTART"),    { VSTART } },
+#endif
+#if defined(VSTOP)
 	{ HAWK_T("TC_CC_VSTOP"),     { VSTOP } },
+#endif
+#if defined(VSUSP)
 	{ HAWK_T("TC_CC_VSUSP"),     { VSUSP } },
+#endif
 #if defined(VSWTC)
 	{ HAWK_T("TC_CC_VSWTC"),     { VSWTC } },  /* hard to define with an alternative value when it's not available */
 #endif
+#if defined(VTIME)
 	{ HAWK_T("TC_CC_VTIME"),     { VTIME } },
+#endif
 #if defined(VWERASE)
 	{ HAWK_T("TC_CC_VWERASE"),   { VWERASE } },
 #endif

+#if defined(B0)
 	{ HAWK_T("TC_CFLAG_B0"),      { B0 } },
+#endif
+#if defined(B110)
 	{ HAWK_T("TC_CFLAG_B110"),    { B110 } },
+#endif
+#if defined(B115200)
 	{ HAWK_T("TC_CFLAG_B115200"), { B115200 } },
+#endif
+#if defined(B1200)
 	{ HAWK_T("TC_CFLAG_B1200"),   { B1200 } },
+#endif
+#if defined(B134)
 	{ HAWK_T("TC_CFLAG_B134"),    { B134 } },
+#endif
+#if defined(B150)
 	{ HAWK_T("TC_CFLAG_B150"),    { B150 } },
+#endif
+#if defined(B1800)
 	{ HAWK_T("TC_CFLAG_B1800"),   { B1800 } },
+#endif
+#if defined(B19200)
 	{ HAWK_T("TC_CFLAG_B19200"),  { B19200 } },
+#endif
+#if defined(B200)
 	{ HAWK_T("TC_CFLAG_B200"),    { B200 } },
+#endif
+#if defined(B230400)
 	{ HAWK_T("TC_CFLAG_B230400"), { B230400 } },
+#endif
+#if defined(B2400)
 	{ HAWK_T("TC_CFLAG_B2400"),   { B2400 } },
+#endif
+#if defined(B300)
 	{ HAWK_T("TC_CFLAG_B300"),    { B300 } },
+#endif
+#if defined(B38400)
 	{ HAWK_T("TC_CFLAG_B38400"),  { B38400 } },
+#endif
 #if defined(B460800)
 	{ HAWK_T("TC_CFLAG_B460800"), { B460800 } },
 #endif
+#if defined(B4800)
 	{ HAWK_T("TC_CFLAG_B4800"),   { B4800 } },
+#endif
+#if defined(B50)
 	{ HAWK_T("TC_CFLAG_B50"),     { B50 } },
+#endif
+#if defined(B57600)
 	{ HAWK_T("TC_CFLAG_B57600"),  { B57600 } },
+#endif
+#if defined(B600)
 	{ HAWK_T("TC_CFLAG_B600"),    { B600 } },
+#endif
+#if defined(B75)
 	{ HAWK_T("TC_CFLAG_B75"),     { B75 } },
+#endif
 #if defined(B921600)
 	{ HAWK_T("TC_CFLAG_B921600"), { B921600 } },
 #endif
+#if defined(B9600)
 	{ HAWK_T("TC_CFLAG_B9600"),   { B9600 } },
+#endif

+#if defined(CLOCAL)
 	{ HAWK_T("TC_CFLAG_CLOCAL"),  { CLOCAL } },
+#endif
+#if defined(CREAD)
 	{ HAWK_T("TC_CFLAG_CREAD"),   { CREAD } },
+#endif
 #if defined(CRTSCTS)
 	{ HAWK_T("TC_CFLAG_CRTSCTS"), { CRTSCTS } },
 #endif
+#if defined(CS5)
 	{ HAWK_T("TC_CFLAG_CS5"),     { CS5 } },
+#endif
+#if defined(CS6)
 	{ HAWK_T("TC_CFLAG_CS6"),     { CS6 } },
+#endif
+#if defined(CS7)
 	{ HAWK_T("TC_CFLAG_CS7"),     { CS7 } },
+#endif
+#if defined(CS8)
 	{ HAWK_T("TC_CFLAG_CS8"),     { CS8 } },
+#endif
+#if defined(CSIZE)
 	{ HAWK_T("TC_CFLAG_CSIZE"),   { CSIZE } },
+#endif
+#if defined(CSTOPB)
 	{ HAWK_T("TC_CFLAG_CSTOPB"),  { CSTOPB } },
+#endif
+#if defined(HUPCL)
 	{ HAWK_T("TC_CFLAG_HUPCL"),   { HUPCL } },
+#endif
+#if defined(PARENB)
 	{ HAWK_T("TC_CFLAG_PARENB"),  { PARENB } },
+#endif
+#if defined(PARODD)
 	{ HAWK_T("TC_CFLAG_PARODD"),  { PARODD } },
+#endif

+#if defined(BRKINT)
 	{ HAWK_T("TC_IFLAG_BRKINT"), { BRKINT } },
+#endif
+#if defined(ICRNL)
 	{ HAWK_T("TC_IFLAG_ICRNL"),  { ICRNL } },
+#endif
+#if defined(IGNBRK)
 	{ HAWK_T("TC_IFLAG_IGNBRK"), { IGNBRK } },
+#endif
+#if defined(IGNCR)
 	{ HAWK_T("TC_IFLAG_IGNCR"),  { IGNCR } },
+#endif
+#if defined(IGNPAR)
 	{ HAWK_T("TC_IFLAG_IGNPAR"), { IGNPAR } },
+#endif
 #if defined(IMAXBEL)
 	{ HAWK_T("TC_IFLAG_IMAXBEL"),{ IMAXBEL } },
 #endif
+#if defined(INLCR)
 	{ HAWK_T("TC_IFLAG_INLCR"),  { INLCR } },
+#endif
+#if defined(INPCK)
 	{ HAWK_T("TC_IFLAG_INPCK"),  { INPCK } },
+#endif
+#if defined(ISTRIP)
 	{ HAWK_T("TC_IFLAG_ISTRIP"), { ISTRIP } },
+#endif
 	{ HAWK_T("TC_IFLAG_IUCLC"),  { X_IUCLC } },
 	{ HAWK_T("TC_IFLAG_IUTF8"),  { X_IUTF8 } },
+#if defined(IXANY)
 	{ HAWK_T("TC_IFLAG_IXANY"),  { IXANY } },
+#endif
+#if defined(IXOFF)
 	{ HAWK_T("TC_IFLAG_IXOFF"),  { IXOFF } },
+#endif
+#if defined(IXON)
 	{ HAWK_T("TC_IFLAG_IXON"),   { IXON } },
+#endif
+#if defined(PARMRK)
 	{ HAWK_T("TC_IFLAG_PARMRK"), { PARMRK } },
+#endif

+#if defined(TCIFLUSH)
 	{ HAWK_T("TC_IFLUSH"),       { TCIFLUSH } },
+#endif
+#if defined(TCIOFLUSH)
 	{ HAWK_T("TC_IOFLUSH"),      { TCIOFLUSH } },
+#endif
+#if defined(TCOFLUSH)
 	{ HAWK_T("TC_OFLUSH"),       { TCOFLUSH } },
+#endif

+#if defined(ECHO)
 	{ HAWK_T("TC_LFLAG_ECHO"),   { ECHO  } },
+#endif
+#if defined(ECHOE)
 	{ HAWK_T("TC_LFLAG_ECHOE"),  { ECHOE  } },
+#endif
+#if defined(ECHOK)
 	{ HAWK_T("TC_LFLAG_ECHOK"),  { ECHOK  } },
+#endif
+#if defined(ECHONL)
 	{ HAWK_T("TC_LFLAG_ECHONL"), { ECHONL  } },
+#endif
+#if defined(ICANON)
 	{ HAWK_T("TC_LFLAG_ICANON"), { ICANON  } },
+#endif
+#if defined(ISIG)
 	{ HAWK_T("TC_LFLAG_ISIG"),   { ISIG  } },
+#endif
+#if defined(NOFLSH)
 	{ HAWK_T("TC_LFLAG_NOFLSH"), { NOFLSH  } },
+#endif
+#if defined(TOSTOP)
 	{ HAWK_T("TC_LFLAG_TOSTOP"), { TOSTOP  } },
+#endif

+#if defined(OCRNL)
 	{ HAWK_T("TC_OFLAG_OCRNL"),  { OCRNL  } },
+#endif
+#if defined(ONLCR)
 	{ HAWK_T("TC_OFLAG_ONLCR"),  { ONLCR  } },
+#endif
+#if defined(ONLRET)
 	{ HAWK_T("TC_OFLAG_ONLRET"), { ONLRET  } },
+#endif
+#if defined(ONOCR)
 	{ HAWK_T("TC_OFLAG_ONOCR"),  { ONOCR  } },
+#endif
 	{ HAWK_T("TC_OFLAG_ONOEOT"), { X_ONOEOT  } },
+#if defined(OPOST)
 	{ HAWK_T("TC_OFLAG_OPOST"),  { OPOST  } },
+#endif
 	{ HAWK_T("TC_OFLAG_OXTABS"), { X_OXTABS  } },

+#if defined(TCSADRAIN)
 	{ HAWK_T("TC_SADRAIN"),      { TCSADRAIN  } },
+#endif
+#if defined(TCSAFLUSH)
 	{ HAWK_T("TC_SAFLUSH"),      { TCSAFLUSH } },
+#endif
+#if defined(TCSANOW)
 	{ HAWK_T("TC_SANOW"),        { TCSANOW  } },
+#endif

+#if defined(WNOHANG)
 	{ HAWK_T("WNOHANG"),         { WNOHANG } }
+#endif
 };

 static int query (hawk_mod_t* mod, hawk_t* hawk, const hawk_ooch_t* name, hawk_mod_sym_t* sym)
@@ -643,6 +643,8 @@ int hawk_pio_init (hawk_pio_t* pio, hawk_gem_t* gem, const hawk_ooch_t* cmd, int
 	HANDLE windevnul = INVALID_HANDLE_VALUE;
 	BOOL apiret;
 	hawk_ooch_t* dupcmd;
+	void* envblk = HAWK_NULL;
+	DWORD create_flags;
 	int create_retried;

 #elif defined(__OS2__)
@@ -904,18 +906,30 @@ create_process:

 	if (HAWK_UNLIKELY(!dupcmd)) goto oops;

+	if (env_mk)
+	{
+#if defined(HAWK_OOCH_IS_BCH)
+		envblk = env_mk(HAWK_PIO_ENV_MK_BPN, env_ctx);
+#else
+		envblk = env_mk(HAWK_PIO_ENV_MK_UPN, env_ctx);
+#endif
+		if (HAWK_UNLIKELY(!envblk)) goto oops;
+	}
+
+#if defined(HAWK_OOCH_IS_BCH)
+	create_flags = 0;
+#else
+	create_flags = CREATE_UNICODE_ENVIRONMENT;
+#endif
+
 	apiret = CreateProcess(
 		HAWK_NULL,  /* LPCTSTR lpApplicationName */
 		dupcmd,    /* LPTSTR lpCommandLine */
 		HAWK_NULL,  /* LPSECURITY_ATTRIBUTES lpProcessAttributes */
 		HAWK_NULL,  /* LPSECURITY_ATTRIBUTES lpThreadAttributes */
 		TRUE,      /* BOOL bInheritHandles */
-	#if defined(HAWK_OOCH_IS_BCH)
-		0,         /* DWORD dwCreationFlags */
-	#else
-		CREATE_UNICODE_ENVIRONMENT, /* DWORD dwCreationFlags */
-	#endif
-		HAWK_NULL, /* LPVOID lpEnvironment */
+		create_flags, /* DWORD dwCreationFlags */
+		envblk,     /* LPVOID lpEnvironment */
 		HAWK_NULL, /* LPCTSTR lpCurrentDirectory */
 		&startup, /* LPSTARTUPINFO lpStartupInfo */
 		&procinfo /* LPPROCESS_INFORMATION lpProcessInformation */
@@ -53,7 +53,7 @@
 #define rotate_left(rbt,pivot) rotate(rbt,pivot,1);
 #define rotate_right(rbt,pivot) rotate(rbt,pivot,0);

-HAWK_INLINE hawk_rbt_pair_t* hawk_rbt_allocpair (
+static HAWK_INLINE_ALWAYS hawk_rbt_pair_t* alloc_pair (
 	hawk_rbt_t* rbt, void* kptr, hawk_oow_t klen, void* vptr, hawk_oow_t vlen)
 {
 	hawk_rbt_pair_t* pair;
@@ -120,7 +120,7 @@ HAWK_INLINE hawk_rbt_pair_t* hawk_rbt_allocpair (
 	return pair;
 }

-HAWK_INLINE void hawk_rbt_freepair (hawk_rbt_t* rbt, hawk_rbt_pair_t* pair)
+static HAWK_INLINE_ALWAYS void free_pair (hawk_rbt_t* rbt, hawk_rbt_pair_t* pair)
 {
 	if (rbt->style->freeer[HAWK_RBT_KEY])
 		rbt->style->freeer[HAWK_RBT_KEY](rbt, KPTR(pair), KLEN(pair));
@@ -129,6 +129,16 @@ HAWK_INLINE void hawk_rbt_freepair (hawk_rbt_t* rbt, hawk_rbt_pair_t* pair)
 	hawk_gem_freemem(rbt->gem, pair);
 }

+hawk_rbt_pair_t* hawk_rbt_allocpair (hawk_rbt_t* rbt, void* kptr, hawk_oow_t klen, void* vptr, hawk_oow_t vlen)
+{
+	return alloc_pair(rbt, kptr, klen, vptr, vlen);
+}
+
+void hawk_rbt_freepair (hawk_rbt_t* rbt, hawk_rbt_pair_t* pair)
+{
+	free_pair(rbt, pair);
+}
+
 static hawk_rbt_style_t style[] =
 {
 	{
@@ -450,7 +460,7 @@ static hawk_rbt_pair_t* change_pair_val (hawk_rbt_t* rbt, hawk_rbt_pair_t* pair,
 			else
 			{
 				/* need to reconstruct the pair */
-				hawk_rbt_pair_t* p = hawk_rbt_allocpair(rbt, KPTR(pair), KLEN(pair), vptr, vlen);
+				hawk_rbt_pair_t* p = alloc_pair(rbt, KPTR(pair), KLEN(pair), vptr, vlen);
 				if (HAWK_UNLIKELY(!p)) return HAWK_NULL;

 				p->color = pair->color;
@@ -475,7 +485,7 @@ static hawk_rbt_pair_t* change_pair_val (hawk_rbt_t* rbt, hawk_rbt_pair_t* pair,

 				if (pair == rbt->root) rbt->root = p;

-				hawk_rbt_freepair(rbt, pair);
+				free_pair(rbt, pair);
 				return p;
 			}
 		}
@@ -539,7 +549,7 @@ static hawk_rbt_pair_t* insert (hawk_rbt_t* rbt, void* kptr, hawk_oow_t klen, vo
 		return HAWK_NULL;
 	}

-	x_new = hawk_rbt_allocpair(rbt, kptr, klen, vptr, vlen);
+	x_new = alloc_pair(rbt, kptr, klen, vptr, vlen);
 	if (HAWK_UNLIKELY(!x_new)) return HAWK_NULL;

 	if (x_par == HAWK_NULL)
@@ -819,7 +829,7 @@ static void delete_pair (hawk_rbt_t* rbt, hawk_rbt_pair_t* pair)
 		if (y->color == HAWK_RBT_BLACK && !IS_NIL(rbt,x))
 			adjust_for_delete(rbt, x, parent);

-		hawk_rbt_freepair(rbt, y);
+		free_pair(rbt, y);
 	}
 	else
 	{
@@ -844,7 +854,7 @@ static void delete_pair (hawk_rbt_t* rbt, hawk_rbt_pair_t* pair)
 		if (pair->left->parent == pair) pair->left->parent = y;
 		if (pair->right->parent == pair) pair->right->parent = y;

-		hawk_rbt_freepair(rbt, pair);
+		free_pair(rbt, pair);
 	}

 	rbt->size--;
@@ -25,6 +25,29 @@
 #ifndef _HAWK_SKAD_PRV_H_
 #define _HAWK_SKAD_PRV_H_

+#if defined(_WIN32)
+#	include <winsock2.h>
+#	include <ws2tcpip.h>
+/*#     include <iphlpapi.h> */
+#elif defined(__OS2__)
+#	if defined(TCPV40HDRS)
+#		define BSD_SELECT
+#	endif
+#	include <types.h>
+#	include <sys/socket.h>
+#	include <netinet/in.h>
+#	include <sys/ioctl.h>
+#	include <nerrno.h>
+#	if defined(TCPV40HDRS)
+#		define USE_SELECT
+#		include <sys/select.h>
+#	else
+#		include <unistd.h>
+#	endif
+#elif defined(__DOS__)
+
+	/* TODO: */
+#else
 #	include <sys/types.h>
 #	include <sys/socket.h>
 #	if defined(HAVE_NETINET_IN_H)
@@ -39,6 +62,7 @@
 #	if defined(HAVE_NET_IF_DL_H)
 #		include <net/if_dl.h>
 #	endif
+#endif

 union hawk_skad_alt_t
 {
@@ -1011,6 +1011,7 @@ hawk_oow_t hawk_gem_skadtoucstr (hawk_gem_t* gem, const hawk_skad_t* _skad, hawk
 			break;
 #endif

+#if (HAWK_SIZEOF_STRUCT_SOCKADDR_UN > 0)
 		case HAWK_AF_UNIX:
 			if (flags & HAWK_SKAD_TO_BCSTR_ADDR)
 			{
@@ -1028,6 +1029,7 @@ hawk_oow_t hawk_gem_skadtoucstr (hawk_gem_t* gem, const hawk_skad_t* _skad, hawk
 			}

 			break;
+#endif
 	}

 done:
@@ -1261,6 +1263,7 @@ hawk_oow_t hawk_gem_skadtobcstr (hawk_gem_t* gem, const hawk_skad_t* _skad, hawk
 			break;
 #endif

+#if (HAWK_SIZEOF_STRUCT_SOCKADDR_UN > 0)
 		case HAWK_AF_UNIX:
 			if (flags & HAWK_SKAD_TO_BCSTR_ADDR)
 			{
@@ -1282,6 +1285,7 @@ hawk_oow_t hawk_gem_skadtobcstr (hawk_gem_t* gem, const hawk_skad_t* _skad, hawk
 			}

 			break;
+#endif
 	}

 done:
@@ -1480,7 +1484,7 @@ void hawk_skad_init_for_eth (hawk_skad_t* skad, int ifindex, hawk_ethad_t* ethad
 		HAWK_MEMCPY(sll->sdl_data, ethad, HAWK_ETHAD_LEN);
 	}
 #else
-#	error UNSUPPORTED DATALINK SOCKET ADDRESS
+	/* UNSUPPORTED, do nothing */
 #endif
 }

@@ -193,6 +193,7 @@ typedef struct rxtn_t
 	void* envp; /* cached environment value */
 	hawk_map_t* env_map;
 	hawk_oow_t env_map_rev;
+	hawk_rtx_env_mk_type_t env_type;
 } rxtn_t;

 typedef struct ioattr_t
@@ -446,7 +447,7 @@ void* hawk_stdmodopen (hawk_t* hawk, const hawk_mod_spec_t* spec)
 		if (!modpath) return HAWK_NULL;

 		h = LoadLibrary(modpath);
-		if (!h) hawk_seterrnum(hawk, HAWK_NULL, hawk_syserr_to_errnum(GetLastError());
+		if (!h) hawk_seterrnum(hawk, HAWK_NULL, hawk_syserr_to_errnum(GetLastError()));

 		hawk_freemem(hawk, modpath);

@@ -457,7 +458,7 @@ void* hawk_stdmodopen (hawk_t* hawk, const hawk_mod_spec_t* spec)
 	{
 		HMODULE h;
 		h = GetModuleHandle(HAWK_NULL);
-		if (!h) hawk_seterrnum(hawk, HAWK_NULL, hawk_syserr_to_errnum(GetLastError());
+		if (!h) hawk_seterrnum(hawk, HAWK_NULL, hawk_syserr_to_errnum(GetLastError()));
 		return h;
 	}

@@ -649,7 +650,7 @@ void* hawk_stdmodgetsym (hawk_t* hawk, void* handle, const hawk_ooch_t* name)

 #elif defined(_WIN32)
 	s = GetProcAddress((HMODULE)handle, mname);
-	if (!s) hawk_seterrnum(hawk, HAWK_NULL, hawk_syserr_to_errnum(GetLastError());
+	if (!s) hawk_seterrnum(hawk, HAWK_NULL, hawk_syserr_to_errnum(GetLastError()));

 #elif defined(__OS2__)
 	{
@@ -2043,13 +2044,10 @@ static int parse_rwpipe_uri (const hawk_ooch_t* uri, int* flags, hawk_nwad_t* nw
 static void* rtx_env_maker (hawk_rtx_t* rtx, hawk_rtx_env_mk_type_t env_mk_type)
 {
 	hawk_t* hawk = hawk_rtx_gethawk(rtx);
-
-	if (env_mk_type == HAWK_RTX_ENV_MK_BPP)
-	{
 	hawk_val_t* v_env;
 	hawk_map_t* env_map;
 	hawk_oow_t env_map_rev;
-		hawk_env_char_t** envp;
+	void* envp;
 	xtn_t* xtn;
 	rxtn_t* rxtn;

@@ -2070,26 +2068,23 @@ static void* rtx_env_maker (hawk_rtx_t* rtx, hawk_rtx_env_mk_type_t env_mk_type)
 		env_map_rev = 0;
 	}

-		if (!rxtn->envp || rxtn->env_map != env_map ||
+	if (!rxtn->envp || rxtn->env_type != env_mk_type ||
+	    rxtn->env_map != env_map ||
 	    (env_map && rxtn->env_map_rev != env_map_rev))
 	{
-			envp = hawk_rtx_commit_environ(rtx, xtn->gbl_environ);
+		envp = hawk_rtx_commit_environ(rtx, xtn->gbl_environ, env_mk_type);
 		if (HAWK_UNLIKELY(!envp)) return HAWK_NULL;

 		if (rxtn->envp) hawk_rtx_freemem(rtx, rxtn->envp);
 		rxtn->envp = envp;
 		rxtn->env_map = env_map;
 		rxtn->env_map_rev = env_map_rev;
+		rxtn->env_type = env_mk_type;
 	}

 	return rxtn->envp;
 }

-/* TODO: support more types */
-	/* unsupported env_mk_type */
-	return HAWK_NULL;
-}
-
 static void* pio_env_maker (hawk_pio_env_mk_type_t env_mk_type, void* ctx)
 {
 	hawk_rtx_t* rtx = (hawk_rtx_t*)ctx;
@@ -2138,7 +2133,7 @@ static hawk_ooi_t pio_handler_open (hawk_rtx_t* rtx, hawk_rio_arg_t* riod)
 		0,
 		riod->name,
 		flags | HAWK_PIO_SHELL | HAWK_PIO_TEXT | HAWK_PIO_IGNOREECERR,
-		(rtx->rio.env_mk? pio_env_maker: HAWK_NULL),
+		(rtx->rio.env_mk? pio_env_maker: (hawk_pio_env_mk_t)HAWK_NULL),
 		rtx
 	);
 	if (!handle) return -1;
@@ -2849,6 +2844,7 @@ static void fini_rxtn (hawk_rtx_t* rtx, void* ctx)
 	}
 	rxtn->env_map = HAWK_NULL;
 	rxtn->env_map_rev = 0;
+	rxtn->env_type = HAWK_RTX_ENV_MK_BPP;
 }

 static int build_argcv (hawk_rtx_t* rtx, int argc_id, int argv_id, const hawk_ooch_t* id, hawk_ooch_t* icf[])
@@ -3078,14 +3074,12 @@ static int build_environ (hawk_rtx_t* rtx, int gbl_id, hawk_env_char_t* envarr[]
 	return 0;
 }

-hawk_bch_t** hawk_rtx_commit_environ (hawk_rtx_t* rtx, int gbl_id)
+void* hawk_rtx_commit_environ (hawk_rtx_t* rtx, int gbl_id, hawk_rtx_env_mk_type_t env_mk_type)
 {
 	hawk_val_t* v_env;
 	hawk_map_t* map;
 	hawk_map_itr_t itr;
 	hawk_map_pair_t* pair;
-	hawk_env_char_t** envp;
-	hawk_env_char_t* ptr;
 	hawk_oow_t count, ptr_bytes, str_bytes;

 	v_env = hawk_rtx_getgbl(rtx, gbl_id);
@@ -3095,12 +3089,44 @@ hawk_bch_t** hawk_rtx_commit_environ (hawk_rtx_t* rtx, int gbl_id)
 	{
 		/* it may be nil. but we can't prevent ENVIRON from being set to
 		 * other scalar types, we should handle this case gracefully */
-		envp = (hawk_env_char_t**)hawk_rtx_allocmem(rtx, HAWK_SIZEOF(*envp) * 1);
+		switch (env_mk_type)
+		{
+			case HAWK_RTX_ENV_MK_BPP:
+			{
+				hawk_bch_t** envp;
+
+				envp = (hawk_bch_t**)hawk_rtx_allocmem(rtx, HAWK_SIZEOF(*envp) * 1);
 				if (HAWK_UNLIKELY(!envp)) return HAWK_NULL;
 				envp[0] = HAWK_NULL;
 				return envp;
 			}

+			case HAWK_RTX_ENV_MK_BPN:
+			{
+				hawk_bch_t* envp;
+
+				envp = (hawk_bch_t*)hawk_rtx_allocmem(rtx, HAWK_SIZEOF(*envp) * 2);
+				if (HAWK_UNLIKELY(!envp)) return HAWK_NULL;
+				envp[0] = '\0';
+				envp[1] = '\0';
+				return envp;
+			}
+
+			case HAWK_RTX_ENV_MK_UPN:
+			{
+				hawk_uch_t* envp;
+
+				envp = (hawk_uch_t*)hawk_rtx_allocmem(rtx, HAWK_SIZEOF(*envp) * 2);
+				if (HAWK_UNLIKELY(!envp)) return HAWK_NULL;
+				envp[0] = '\0';
+				envp[1] = '\0';
+				return envp;
+			}
+		}
+
+		return HAWK_NULL;
+	}
+
 	map = ((hawk_val_map_t*)v_env)->map;
 	HAWK_ASSERT(map != HAWK_NULL);

@@ -3130,32 +3156,38 @@ hawk_bch_t** hawk_rtx_commit_environ (hawk_rtx_t* rtx, int gbl_id)
 		}
 #endif

-#if defined(HAWK_ENV_CHAR_IS_BCH)
+		if (env_mk_type == HAWK_RTX_ENV_MK_UPN)
+		{
+			{
+				hawk_uch_t* vptr;
+				vptr = hawk_rtx_valtoucstrdup(rtx, HAWK_MAP_VPTR(pair), &vlen);
+				if (HAWK_UNLIKELY(!vptr)) return HAWK_NULL;
+				hawk_rtx_freemem(rtx, vptr);
+			}
+		}
+		else
 		{
 			hawk_bch_t* vptr;
 			vptr = hawk_rtx_getvalbcstr(rtx, HAWK_MAP_VPTR(pair), &vlen);
 			if (HAWK_UNLIKELY(!vptr)) return HAWK_NULL;
 			hawk_rtx_freevalbcstr(rtx, HAWK_MAP_VPTR(pair), vptr);
 		}
-#else
-		{
-			hawk_uch_t* vptr;
-			vptr = hawk_rtx_getvalucstr(rtx, HAWK_MAP_VPTR(pair), &vlen);
-			if (HAWK_UNLIKELY(!vptr)) return HAWK_NULL;
-			hawk_rtx_freevalucstr(rtx, HAWK_MAP_VPTR(pair), vptr);
-		}
-#endif

 		str_bytes += klen + 1 + vlen + 1;
 		count++;
 		pair = hawk_map_getnextpair(map, &itr);
 	}

+	if (env_mk_type == HAWK_RTX_ENV_MK_BPP)
+	{
+		hawk_bch_t** envp;
+		hawk_bch_t* ptr;
+
 		ptr_bytes = HAWK_SIZEOF(*envp) * (count + 1);
-	envp = (hawk_env_char_t**)hawk_rtx_allocmem(rtx, ptr_bytes + (str_bytes * HAWK_SIZEOF(*ptr)));
+		envp = (hawk_bch_t**)hawk_rtx_allocmem(rtx, ptr_bytes + (str_bytes * HAWK_SIZEOF(*ptr)));
 		if (HAWK_UNLIKELY(!envp)) return HAWK_NULL;

-	ptr = (hawk_env_char_t*)((hawk_uint8_t*)envp + ptr_bytes);
+		ptr = (hawk_bch_t*)((hawk_uint8_t*)envp + ptr_bytes);
 		count = 0;

 		hawk_init_map_itr(&itr, 0);
@@ -3167,11 +3199,10 @@ hawk_bch_t** hawk_rtx_commit_environ (hawk_rtx_t* rtx, int gbl_id)
 			envp[count++] = ptr;
 			klen = HAWK_MAP_KLEN(pair);

-#if ((defined(HAWK_ENV_CHAR_IS_BCH) && defined(HAWK_OOCH_IS_BCH)) || \
-     (defined(HAWK_ENV_CHAR_IS_UCH) && defined(HAWK_OOCH_IS_UCH)))
+#if defined(HAWK_OOCH_IS_BCH)
 			HAWK_MEMCPY(ptr, HAWK_MAP_KPTR(pair), klen);
 			ptr += klen;
-#elif defined(HAWK_ENV_CHAR_IS_BCH)
+#else
 			{
 				hawk_oow_t tmp_ulen, tmp_blen;

@@ -3183,8 +3214,112 @@ hawk_bch_t** hawk_rtx_commit_environ (hawk_rtx_t* rtx, int gbl_id)
 					return HAWK_NULL;
 				}
 				ptr += tmp_blen;
-			klen = tmp_blen;
 			}
+#endif
+
+			*ptr++ = '=';
+
+			{
+				hawk_bch_t* vptr;
+
+				vptr = hawk_rtx_getvalbcstr(rtx, HAWK_MAP_VPTR(pair), &vlen);
+				if (HAWK_UNLIKELY(!vptr))
+				{
+					hawk_rtx_freemem(rtx, envp);
+					return HAWK_NULL;
+				}
+
+				HAWK_MEMCPY(ptr, vptr, vlen);
+				ptr += vlen;
+				hawk_rtx_freevalbcstr(rtx, HAWK_MAP_VPTR(pair), vptr);
+			}
+
+			*ptr++ = '\0';
+			pair = hawk_map_getnextpair(map, &itr);
+		}
+
+		envp[count] = HAWK_NULL;
+		return envp;
+	}
+	else if (env_mk_type == HAWK_RTX_ENV_MK_BPN)
+	{
+		hawk_bch_t* envp;
+		hawk_bch_t* ptr;
+
+		envp = (hawk_bch_t*)hawk_rtx_allocmem(rtx, (str_bytes + 1) * HAWK_SIZEOF(*envp));
+		if (HAWK_UNLIKELY(!envp)) return HAWK_NULL;
+
+		ptr = envp;
+		hawk_init_map_itr(&itr, 0);
+		pair = hawk_map_getfirstpair(map, &itr);
+		while (pair)
+		{
+			hawk_oow_t klen, vlen;
+
+			klen = HAWK_MAP_KLEN(pair);
+
+#if defined(HAWK_OOCH_IS_BCH)
+			HAWK_MEMCPY(ptr, HAWK_MAP_KPTR(pair), klen);
+			ptr += klen;
+#else
+			{
+				hawk_oow_t tmp_ulen, tmp_blen;
+
+				tmp_ulen = klen;
+				tmp_blen = str_bytes;
+				if (hawk_rtx_convutobchars(rtx, HAWK_MAP_KPTR(pair), &tmp_ulen, ptr, &tmp_blen) <= -1)
+				{
+					hawk_rtx_freemem(rtx, envp);
+					return HAWK_NULL;
+				}
+				ptr += tmp_blen;
+			}
+#endif
+
+			*ptr++ = '=';
+
+			{
+				hawk_bch_t* vptr;
+
+				vptr = hawk_rtx_getvalbcstr(rtx, HAWK_MAP_VPTR(pair), &vlen);
+				if (HAWK_UNLIKELY(!vptr))
+				{
+					hawk_rtx_freemem(rtx, envp);
+					return HAWK_NULL;
+				}
+
+				HAWK_MEMCPY(ptr, vptr, vlen);
+				ptr += vlen;
+				hawk_rtx_freevalbcstr(rtx, HAWK_MAP_VPTR(pair), vptr);
+			}
+
+			*ptr++ = '\0';
+			pair = hawk_map_getnextpair(map, &itr);
+		}
+
+		*ptr++ = '\0';
+		return envp;
+	}
+	else if (env_mk_type == HAWK_RTX_ENV_MK_UPN)
+	{
+		hawk_uch_t* envp;
+		hawk_uch_t* ptr;
+
+		envp = (hawk_uch_t*)hawk_rtx_allocmem(rtx, (str_bytes + 1) * HAWK_SIZEOF(*envp));
+		if (HAWK_UNLIKELY(!envp)) return HAWK_NULL;
+
+		ptr = envp;
+		hawk_init_map_itr(&itr, 0);
+		pair = hawk_map_getfirstpair(map, &itr);
+		while (pair)
+		{
+			hawk_oow_t klen, vlen;
+
+			klen = HAWK_MAP_KLEN(pair);
+
+#if defined(HAWK_OOCH_IS_UCH)
+			HAWK_MEMCPY(ptr, HAWK_MAP_KPTR(pair), klen);
+			ptr += klen;
 #else
 			{
 				hawk_oow_t tmp_blen, tmp_ulen;
@@ -3197,32 +3332,15 @@ hawk_bch_t** hawk_rtx_commit_environ (hawk_rtx_t* rtx, int gbl_id)
 					return HAWK_NULL;
 				}
 				ptr += tmp_ulen;
-			klen = tmp_ulen;
 			}
 #endif

 			*ptr++ = '=';

-#if defined(HAWK_ENV_CHAR_IS_BCH)
-		{
-			hawk_bch_t* vptr;
-
-			vptr = hawk_rtx_getvalbcstr(rtx, HAWK_MAP_VPTR(pair), &vlen);
-			if (HAWK_UNLIKELY(!vptr))
-			{
-				hawk_rtx_freemem(rtx, envp);
-				return HAWK_NULL;
-			}
-
-			HAWK_MEMCPY(ptr, vptr, vlen);
-			ptr += vlen;
-			hawk_rtx_freevalbcstr(rtx, HAWK_MAP_VPTR(pair), vptr);
-		}
-#else
 			{
 				hawk_uch_t* vptr;

-			vptr = hawk_rtx_getvalucstr(rtx, HAWK_MAP_VPTR(pair), &vlen);
+				vptr = hawk_rtx_valtoucstrdup(rtx, HAWK_MAP_VPTR(pair), &vlen);
 				if (HAWK_UNLIKELY(!vptr))
 				{
 					hawk_rtx_freemem(rtx, envp);
@@ -3231,27 +3349,33 @@ hawk_bch_t** hawk_rtx_commit_environ (hawk_rtx_t* rtx, int gbl_id)

 				HAWK_MEMCPY(ptr, vptr, vlen);
 				ptr += vlen;
-			hawk_rtx_freevalucstr(rtx, HAWK_MAP_VPTR(pair), vptr);
+				hawk_rtx_freemem(rtx, vptr);
 			}
-#endif

 			*ptr++ = '\0';
 			pair = hawk_map_getnextpair(map, &itr);
 		}

-	envp[count] = HAWK_NULL;
+		*ptr++ = '\0';
 		return envp;
 	}

+	return HAWK_NULL;
+}
+
 static int make_additional_globals (hawk_rtx_t* rtx, xtn_t* xtn, const hawk_ooch_t* id, hawk_ooch_t* icf[])
 {
-#if defined(HAVE_CRT_EXTERNS_H)
+#if defined(_WIN32)
+	#define SYSTEM_ENVIRON _environ
+#elif defined(HAVE_CRT_EXTERNS_H)
 	#define environ (*(_NSGetEnviron()))
+	#define SYSTEM_ENVIRON environ
 #else
 	extern char** environ;
+	#define SYSTEM_ENVIRON environ
 #endif
 	if (build_argcv(rtx, xtn->gbl_argc, xtn->gbl_argv, id, icf) <= -1 ||
-	    build_environ(rtx, xtn->gbl_environ, environ) <= -1) return -1;
+	    build_environ(rtx, xtn->gbl_environ, SYSTEM_ENVIRON) <= -1) return -1;
 	return 0;
 }

@@ -3261,14 +3261,14 @@ int hawk_fnmat_uchars_i (const hawk_uch_t* str, hawk_oow_t slen, const hawk_uch_
 			 * a period in the pattern explicitly
 			 */
 			if ((!no_first_period && sp == str) ||
-			    (HAWK_FNMAT_IS_SEP(sp[-1]) && (flags & HAWK_FNMAT_PATHNAME)))
+			    (HAWK_IS_PATH_SEP(sp[-1]) && (flags & HAWK_FNMAT_PATHNAME)))
 			{
 				if (pc != '.') return 0;
 				sp++; pp++;
 				continue;
 			}
 		}
-		else if (HAWK_FNMAT_IS_SEP(sc) && (flags & HAWK_FNMAT_PATHNAME))
+		else if (HAWK_IS_PATH_SEP(sc) && (flags & HAWK_FNMAT_PATHNAME))
 		{
 			while (pc == '*')
 			{
@@ -3277,7 +3277,7 @@ int hawk_fnmat_uchars_i (const hawk_uch_t* str, hawk_oow_t slen, const hawk_uch_
 			}

 			/* a path separator must be matched explicitly */
-			if (!HAWK_FNMAT_IS_SEP(pc)) return 0;
+			if (!HAWK_IS_PATH_SEP(pc)) return 0;
 			sp++; pp++;
 			continue;
 		}
@@ -3307,7 +3307,7 @@ int hawk_fnmat_uchars_i (const hawk_uch_t* str, hawk_oow_t slen, const hawk_uch_
 					const hawk_uch_t* s = sp;
 					for (s = sp; s < se; s++)
 					{
-						if (HAWK_FNMAT_IS_SEP(*s)) return 0;
+						if (HAWK_IS_PATH_SEP(*s)) return 0;
 					}
 				}
 				return 1;
@@ -3317,7 +3317,7 @@ int hawk_fnmat_uchars_i (const hawk_uch_t* str, hawk_oow_t slen, const hawk_uch_
 				do
 				{
 					if (hawk_fnmat_uchars_i(sp, se - sp, pp, pe - pp, flags, 1)) return 1;
-					if (HAWK_FNMAT_IS_SEP(*sp) && (flags & HAWK_FNMAT_PATHNAME)) break;
+					if (HAWK_IS_PATH_SEP(*sp) && (flags & HAWK_FNMAT_PATHNAME)) break;
 					sp++;
 				}
 				while (sp < se);
@@ -3492,14 +3492,14 @@ int hawk_fnmat_bchars_i (const hawk_bch_t* str, hawk_oow_t slen, const hawk_bch_
 			 * a period in the pattern explicitly
 			 */
 			if ((!no_first_period && sp == str) ||
-			    (HAWK_FNMAT_IS_SEP(sp[-1]) && (flags & HAWK_FNMAT_PATHNAME)))
+			    (HAWK_IS_PATH_SEP(sp[-1]) && (flags & HAWK_FNMAT_PATHNAME)))
 			{
 				if (pc != '.') return 0;
 				sp++; pp++;
 				continue;
 			}
 		}
-		else if (HAWK_FNMAT_IS_SEP(sc) && (flags & HAWK_FNMAT_PATHNAME))
+		else if (HAWK_IS_PATH_SEP(sc) && (flags & HAWK_FNMAT_PATHNAME))
 		{
 			while (pc == '*')
 			{
@@ -3508,7 +3508,7 @@ int hawk_fnmat_bchars_i (const hawk_bch_t* str, hawk_oow_t slen, const hawk_bch_
 			}

 			/* a path separator must be matched explicitly */
-			if (!HAWK_FNMAT_IS_SEP(pc)) return 0;
+			if (!HAWK_IS_PATH_SEP(pc)) return 0;
 			sp++; pp++;
 			continue;
 		}
@@ -3538,7 +3538,7 @@ int hawk_fnmat_bchars_i (const hawk_bch_t* str, hawk_oow_t slen, const hawk_bch_
 					const hawk_bch_t* s = sp;
 					for (s = sp; s < se; s++)
 					{
-						if (HAWK_FNMAT_IS_SEP(*s)) return 0;
+						if (HAWK_IS_PATH_SEP(*s)) return 0;
 					}
 				}
 				return 1;
@@ -3548,7 +3548,7 @@ int hawk_fnmat_bchars_i (const hawk_bch_t* str, hawk_oow_t slen, const hawk_bch_
 				do
 				{
 					if (hawk_fnmat_bchars_i(sp, se - sp, pp, pe - pp, flags, 1)) return 1;
-					if (HAWK_FNMAT_IS_SEP(*sp) && (flags & HAWK_FNMAT_PATHNAME)) break;
+					if (HAWK_IS_PATH_SEP(*sp) && (flags & HAWK_FNMAT_PATHNAME)) break;
 					sp++;
 				}
 				while (sp < se);
@@ -1621,14 +1621,14 @@ int _fn_name_ (const _char_type_* str, hawk_oow_t slen, const _char_type_* ptn,
 			 * a period in the pattern explicitly
 			 */
 			if ((!no_first_period && sp == str) ||
-			    (HAWK_FNMAT_IS_SEP(sp[-1]) && (flags & HAWK_FNMAT_PATHNAME)))
+			    (HAWK_IS_PATH_SEP(sp[-1]) && (flags & HAWK_FNMAT_PATHNAME)))
 			{
 				if (pc != '.') return 0;
 				sp++; pp++;
 				continue;
 			}
 		}
-		else if (HAWK_FNMAT_IS_SEP(sc) && (flags & HAWK_FNMAT_PATHNAME))
+		else if (HAWK_IS_PATH_SEP(sc) && (flags & HAWK_FNMAT_PATHNAME))
 		{
 			while (pc == '*')
 			{
@@ -1637,7 +1637,7 @@ int _fn_name_ (const _char_type_* str, hawk_oow_t slen, const _char_type_* ptn,
 			}

 			/* a path separator must be matched explicitly */
-			if (!HAWK_FNMAT_IS_SEP(pc)) return 0;
+			if (!HAWK_IS_PATH_SEP(pc)) return 0;
 			sp++; pp++;
 			continue;
 		}
@@ -1667,7 +1667,7 @@ int _fn_name_ (const _char_type_* str, hawk_oow_t slen, const _char_type_* ptn,
 					const _char_type_* s = sp;
 					for (s = sp; s < se; s++)
 					{
-						if (HAWK_FNMAT_IS_SEP(*s)) return 0;
+						if (HAWK_IS_PATH_SEP(*s)) return 0;
 					}
 				}
 				return 1;
@@ -1677,7 +1677,7 @@ int _fn_name_ (const _char_type_* str, hawk_oow_t slen, const _char_type_* ptn,
 				do
 				{
 					if (_fn_name_()(sp, se - sp, pp, pe - pp, flags, 1)) return 1;
-					if (HAWK_FNMAT_IS_SEP(*sp) && (flags & HAWK_FNMAT_PATHNAME)) break;
+					if (HAWK_IS_PATH_SEP(*sp) && (flags & HAWK_FNMAT_PATHNAME)) break;
 					sp++;
 				}
 				while (sp < se);
@@ -509,19 +509,13 @@ int hawk_conv_bchars_to_uchars_upto_stopper_with_cmgr (

 /* ------------------------------------------------------------------------ */

-#if defined(_WIN32) || defined(__OS2__) || defined(__DOS__)
-#	define IS_PATH_SEP(c) ((c) == '/' || (c) == '\\')
-#else
-#	define IS_PATH_SEP(c) ((c) == '/')
-#endif
-
 const hawk_uch_t* hawk_get_base_name_ucstr (const hawk_uch_t* path)
 {
 	const hawk_uch_t* p, * last = HAWK_NULL;

 	for (p = path; *p != '\0'; p++)
 	{
-		if (IS_PATH_SEP(*p)) last = p;
+		if (HAWK_IS_PATH_SEP(*p)) last = p;
 	}

 	return last? (last + 1): path;
@@ -533,7 +527,7 @@ const hawk_bch_t* hawk_get_base_name_bcstr (const hawk_bch_t* path)

 	for (p = path; *p != '\0'; p++)
 	{
-		if (IS_PATH_SEP(*p)) last = p;
+		if (HAWK_IS_PATH_SEP(*p)) last = p;
 	}

 	return last? (last + 1): path;
@@ -546,7 +540,7 @@ const hawk_uch_t* hawk_get_base_name_uchars (const hawk_uch_t* path, hawk_oow_t

 	for (p = path; p < end; p++)
 	{
-		if (IS_PATH_SEP(*p)) last = p;
+		if (HAWK_IS_PATH_SEP(*p)) last = p;
 	}

 	return last? (last + 1): path;
@@ -559,7 +553,7 @@ const hawk_bch_t* hawk_get_base_name_bchars (const hawk_bch_t* path, hawk_oow_t

 	for (p = path; p < end; p++)
 	{
-		if (IS_PATH_SEP(*p)) last = p;
+		if (HAWK_IS_PATH_SEP(*p)) last = p;
 	}

 	return last? (last + 1): path;
@@ -40,9 +40,11 @@

 #if defined(_WIN32)
 #	include <windows.h>
+#	include <signal.h>
 #elif defined(__OS2__)
 #	define INCL_DOSPROCESS
 #	include <os2.h>
+#	include <signal.h>
 #else
 #	include <unistd.h>
 #	include <signal.h>
@@ -54,12 +56,12 @@ typedef HAWK::HawkStd HawkStd;
 typedef HAWK::HawkStd::Run Run;
 typedef HAWK::HawkStd::Value Value;

-#ifdef _WIN32
+/*#ifdef _WIN32
 static BOOL WINAPI stop_run (DWORD ctrl_type);
-#else
+#else */
 static void stop_run (int sig);
 static void do_nothing (int sig);
-#endif
+/*#endif*/
 static void relay_signal (int sig);
 static int setsignal (int sig, void(*handler)(int), int restart);
 static void print_debug_return (hawk_rtx_t* rtx, hawk_val_t* ret);
@@ -215,6 +217,15 @@ static void print_error (const hawk_bch_t* fmt, ...)
 	va_end (va);
 }

+static void print_warning (const hawk_bch_t* fmt, ...)
+{
+	va_list va;
+	fprintf (stderr, "WARNING: ");
+	va_start (va, fmt);
+	vfprintf (stderr, fmt, va);
+	va_end (va);
+}
+
 static void print_error(MyHawk& hawk)
 {
 	hawk_errnum_t code = hawk.getErrorNumber();
@@ -239,7 +250,8 @@ static void print_error(MyHawk& hawk)
 	}
 }

-#ifdef _WIN32
+/*
+#if defined(_WIN32)
 static BOOL WINAPI stop_run (DWORD ctrl_type)
 {
 	if (ctrl_type == CTRL_C_EVENT ||
@@ -251,10 +263,11 @@ static BOOL WINAPI stop_run (DWORD ctrl_type)

 	return FALSE;
 }
-#else
+#else */

 static int setsignal (int sig, void(*handler)(int), int restart)
 {
+#if defined(HAVE_SIGACTION)
 	struct sigaction sa_int;

 	sa_int.sa_handler = handler;
@@ -264,17 +277,20 @@ static int setsignal (int sig, void(*handler)(int), int restart)

 	if (restart)
 	{
-	#ifdef SA_RESTART
+	#if defined(SA_RESTART)
 		sa_int.sa_flags |= SA_RESTART;
 	#endif
 	}
 	else
 	{
-	#ifdef SA_INTERRUPT
+	#if defined(SA_INTERRUPT)
 		sa_int.sa_flags |= SA_INTERRUPT;
 	#endif
 	}
 	return sigaction(sig, &sa_int, NULL);
+#else
+	return (signal(sig, handler) == SIG_ERR)? -1: 0;
+#endif
 }

 static void stop_run (int sig)
@@ -288,27 +304,32 @@ static void do_nothing (int sig)
 {
 }

-#endif
+/*#endif*/

 static void set_signal (void)
 {
-#ifdef _WIN32
+/*#ifdef _WIN32
 	SetConsoleCtrlHandler(stop_run, TRUE);
-#else
+#else*/
 	/*setsignal(SIGINT, stop_run, 1); TO BE MORE COMPATIBLE WITH WIN32*/
 	setsignal(SIGINT, stop_run, 0);
+#if defined(SIGPIPE)
 	setsignal(SIGPIPE, do_nothing, 0);
 #endif
+/*#endif*/
 }

 static void unset_signal(void)
 {
+/*
 #ifdef _WIN32
 	SetConsoleCtrlHandler(stop_run, FALSE);
-#else
+#else*/
 	setsignal(SIGINT, SIG_DFL, 1);
+#if defined(SIGPIPE)
 	setsignal(SIGPIPE, SIG_DFL, 1);
 #endif
+/*#endif*/
 }

 static void print_usage (FILE* out, const hawk_bch_t* argv0)
@@ -1,8 +1,13 @@
 #include <Hawk-Sed.hpp>
+#include <hawk-fmt.h>
 #include <stdio.h>
 #include <stdarg.h>
 #include <locale.h>

+#if defined(_WIN32)
+#	include <windows.h>
+#endif
+
 static void print_error (const hawk_bch_t* fmt, ...)
 {
 	va_list va;
@@ -0,0 +1,88 @@
+@echo off
+
+REM if you are two directories down from the top source directory,
+REM you may run the command like this:
+REM ..\..\t\cmd-tap-driver.cmd  -- ..\..\t\run-hawk-test.cmd -f ..\..\t\h-001.hawk
+REM -------------------------------------------------------------------------------
+REM set HAWK_TEST_COMPILER=Z:\path\to\hawk\bld-mingw64\bin\.libs\hawk.exe
+REM Z:\path\to\hawk\t\cmd-tap-driver.cmd --test-name h-011 --log-file h-011.log --trs-file h-011.trs -- Z:\path\to\hawk\t\t\run-hawk-test.cmd -f ..\..\t\h-011.hawk
+REM
+
+setlocal EnableExtensions DisableDelayedExpansion
+
+set "test_name="
+set "log_file="
+set "trs_file="
+
+:parse
+if "%~1"=="" goto usage
+if "%~1"=="--" goto seen_separator
+if "%~1"=="--test-name" goto set_test_name
+if "%~1"=="--log-file" goto set_log_file
+if "%~1"=="--trs-file" goto set_trs_file
+
+echo ERROR: unknown option %~1 1>&2
+goto usage_exit
+
+:set_test_name
+if "%~2"=="" goto usage
+set "test_name=%~2"
+shift
+shift
+goto parse
+
+:set_log_file
+if "%~2"=="" goto usage
+set "log_file=%~2"
+shift
+shift
+goto parse
+
+:set_trs_file
+if "%~2"=="" goto usage
+set "trs_file=%~2"
+shift
+shift
+goto parse
+
+:seen_separator
+shift
+
+:run
+if "%~1"=="" goto usage
+if not defined test_name set "test_name=cmd-test"
+if not defined log_file set "log_file=%test_name%.log"
+if not defined trs_file set "trs_file=%test_name%.trs"
+
+call %1 %2 %3 %4 %5 %6 %7 %8 %9 >"%log_file%" 2>&1
+set "cmd_status=%errorlevel%"
+
+type "%log_file%"
+
+set "result=PASS"
+if not "%cmd_status%"=="0" set "result=FAIL"
+
+findstr /b /c:"not ok " "%log_file%" >nul 2>&1
+if not errorlevel 1 set "result=FAIL"
+
+findstr /b /c:"1..0 # SKIP" "%log_file%" >nul 2>&1
+if not errorlevel 1 set "result=SKIP"
+
+(
+	echo :test-result: %result%
+	echo :global-test-result: %result%
+	echo :recheck: no
+	echo :copy-in-global-log: no
+) >"%trs_file%"
+
+echo %result%: %test_name%
+
+if /i "%result%"=="PASS" exit /b 0
+if /i "%result%"=="SKIP" exit /b 0
+exit /b 1
+
+:usage
+echo Usage: %~nx0 --test-name NAME [--log-file FILE] [--trs-file FILE] -- COMMAND [ARGS...] 1>&2
+
+:usage_exit
+exit /b 2
@@ -13,7 +13,7 @@ function on_sig (sig)

 function main ()
 {
-	@local r;
+	@local r, u;
 	@local badpid;

 	g_seen = 0;
@@ -84,5 +84,18 @@ function main ()
 	r = sys::kill(badpid, sys::SIGINT);
 	tap_ensure (r, sys::RC_ESYSERR, @SCRIPTNAME, @SCRIPTLINE);

+	u = sys::uname();
+	tap_ensure (hawk::type(u), hawk::VAL_MAP, @SCRIPTNAME, @SCRIPTLINE);
+	tap_ensure (hawk::typename(u.sysname), "str", @SCRIPTNAME, @SCRIPTLINE);
+	tap_ensure (hawk::typename(u.nodename), "str", @SCRIPTNAME, @SCRIPTLINE);
+	tap_ensure (hawk::typename(u.release), "str", @SCRIPTNAME, @SCRIPTLINE);
+	tap_ensure (hawk::typename(u.version), "str", @SCRIPTNAME, @SCRIPTLINE);
+	tap_ensure (hawk::typename(u.machine), "str", @SCRIPTNAME, @SCRIPTLINE);
+	tap_ensure (length(u.sysname) > 0, 1, @SCRIPTNAME, @SCRIPTLINE);
+	tap_ensure (length(u.nodename) > 0, 1, @SCRIPTNAME, @SCRIPTLINE);
+	tap_ensure (length(u.release) > 0, 1, @SCRIPTNAME, @SCRIPTLINE);
+	tap_ensure (length(u.version) > 0, 1, @SCRIPTNAME, @SCRIPTLINE);
+	tap_ensure (length(u.machine) > 0, 1, @SCRIPTNAME, @SCRIPTLINE);
+
 	tap_end ();
 }
@@ -3,7 +3,7 @@
@include "tap.inc";

 BEGIN {
-	@local v, v2,  m, m2, js;
+	@local v, v2, v3,  m, m2, js;


 	v = json::parse("{\"a\":1,\"b\":true,\"c\":null,\"d\":[2,3],\"e\":{\"x\":\"y\"}}");
@@ -26,7 +26,6 @@ BEGIN {
 	m["nested"] = hawk::map();
 	m["nested"]["ok"] = 1;
 	m["nested"]["note"] = "hello\n\"world\"";
-
 	js = json::stringify(m);
 	m2 = json::parse(js);

@@ -41,5 +40,14 @@ BEGIN {
 	tap_ensure(v2.a.b.c, 1, @SCRIPTNAME, @SCRIPTLINE);
 	tap_ensure(v2["a"].b["c"], 1, @SCRIPTNAME, @SCRIPTLINE);

+	v3 = json::parse("[false,true,null,\"a\\tb\",-12.5]");
+	tap_ensure(hawk::type(v3), hawk::VAL_ARRAY, @SCRIPTNAME, @SCRIPTLINE);
+	tap_ensure(hawk::type(v3[1]), hawk::VAL_BOOL, @SCRIPTNAME, @SCRIPTLINE);
+	tap_ensure(v3[1], @false, @SCRIPTNAME, @SCRIPTLINE);
+	tap_ensure(v3[2], @true, @SCRIPTNAME, @SCRIPTLINE);
+	tap_ensure(hawk::isnil(v3[3]), 1, @SCRIPTNAME, @SCRIPTLINE);
+	tap_ensure(v3[4], "a\tb", @SCRIPTNAME, @SCRIPTLINE);
+	tap_ensure(v3[5], -12.5, @SCRIPTNAME, @SCRIPTLINE);
+
 	tap_end();
 }
@@ -44,10 +44,17 @@ function main()
 {
 	## if PIPCLOEXEC is turned on, the file descriptor created by the shell (3> in run_pipe_test)
 	## doesn't get inherited to the 'cat' commands in the following text
+	@local uname;

+	uname = sys::uname()
+	if (uname["sysname"] ~ /Linux|Unix/) {
 		run_pipe_test("inherit-default", "BEGIN { print \"hello\" | \"cat >&3\" }", "hello\n");
 		run_pipe_test("cloexec-global", "BEGIN { PIPECLOEXEC = 1; print \"hello\" | \"cat >&3\" }", "");
+		run_pipe_test("inherit-global-off", "BEGIN { PIPECLOEXEC = 0; print \"hello\" | \"cat >&3\" }", "hello\n");
 		run_pipe_test("cloexec-pragma", "@pragma pipecloexec on\nBEGIN { print \"hello\" | \"cat >&3\" }", "");
+	} else {
+		tap_skip("PIPECLOEXEC not relevant");
+	}

 	tap_end();
 }
@@ -139,6 +139,18 @@ function main()
 	tap_ensure(!!@[1], @true, @SCRIPTNAME, @SCRIPTLINE);
 	tap_ensure(!dummy, @false, @SCRIPTNAME, @SCRIPTLINE);
 	tap_ensure(!!dummy, @true, @SCRIPTNAME, @SCRIPTLINE);
+	tmp = 0;
+	tap_ensure(!tmp && 0, 0, @SCRIPTNAME, @SCRIPTLINE);
+	tap_ensure(!tmp && 1, 1, @SCRIPTNAME, @SCRIPTLINE);
+	tap_ensure(!tmp || 0, 1, @SCRIPTNAME, @SCRIPTLINE);
+	tap_ensure(!tmp || 1, 1, @SCRIPTNAME, @SCRIPTLINE);
+	tap_ensure(1 && !tmp, 1, @SCRIPTNAME, @SCRIPTLINE);
+	tap_ensure(0 || !tmp, 1, @SCRIPTNAME, @SCRIPTLINE);
+	tmp = 1;
+	tap_ensure(!tmp && 0, 0, @SCRIPTNAME, @SCRIPTLINE);
+	tap_ensure(!tmp && 1, 0, @SCRIPTNAME, @SCRIPTLINE);
+	tap_ensure(!tmp || 0, 0, @SCRIPTNAME, @SCRIPTLINE);
+	tap_ensure(!tmp || 1, 1, @SCRIPTNAME, @SCRIPTLINE);

 	tap_ensure(sprintf("%d", @true), "1", @SCRIPTNAME, @SCRIPTLINE);
 	tap_ensure(sprintf("%d", @false), "0", @SCRIPTNAME, @SCRIPTLINE);
@@ -53,5 +53,9 @@ func main() {
 	a["k"].fn = mul;
 	tap_ensure(a["k"].fn(4, 4), 16, @SCRIPTNAME, @SCRIPTLINE);

+	a = @[ @{} ];
+	a[1].sum = add;
+	tap_ensure(a[1].sum(8, 9), 17, @SCRIPTNAME, @SCRIPTLINE);
+
 	tap_end();
 }
@@ -0,0 +1,29 @@
+@echo off
+setlocal EnableExtensions EnableDelayedExpansion
+
+if defined HAWK_TEST_COMPILER (
+	set "hawk_bin=%HAWK_TEST_COMPILER%"
+) else (
+	set "hawk_bin=..\bin\hawk.exe"
+)
+
+if defined HAWK_LOG_COMPILER set "hawk_bin=%HAWK_LOG_COMPILER%"
+
+for %%I in ("%hawk_bin%") do (
+	set "hawk_bin=%%~fI"
+	set "hawk_dir=%%~dpI"
+)
+
+if not "!hawk_dir:\.libs\=!"=="!hawk_dir!" (
+	for %%I in ("!hawk_dir!..\..\lib\.libs") do (
+		if exist "%%~fI" set "PATH=%%~fI;!PATH!"
+	)
+)
+
+if defined HAWK_TEST_OPTS (
+	call "!hawk_bin!" %HAWK_TEST_OPTS% %*
+) else (
+	call "!hawk_bin!" %*
+)
+
+exit /b %errorlevel%
Author	SHA1	Message	Date
hyung-hwan	3d8ce4dbcd	removed redundant return in a void function continuous-integration/drone/push Build is passing Details	2026-05-26 12:25:49 +09:00
hyung-hwan	0d313cf474	added some test cases to cover unary with relational ops continuous-integration/drone/push Build is passing Details refactored htb and rbt a bit	2026-05-25 11:56:22 +09:00
hyung-hwan	1ca8160e07	removed HAWK_FNMAT_IS_SEP() continuous-integration/drone/push Build is passing Details	2026-05-24 19:47:39 +09:00
hyung-hwan	6e05998bc9	added sys::uname() continuous-integration/drone/push Build is passing Details	2026-05-24 14:57:16 +09:00
hyung-hwan	0b900e7d0d	minor fix for a picky compiler continuous-integration/drone/push Build is passing Details	2026-05-24 14:55:59 +09:00
hyung-hwan	fe643c1c48	added some text for ENVIRON, PIPECLOEXEC, etc continuous-integration/drone/push Build is passing Details	2026-05-23 14:32:19 +09:00
hyung-hwan	d36d1a8675	tweaked code for win32 continuous-integration/drone/push Build is passing Details	2026-05-23 13:11:26 +09:00
hyung-hwan	edea38a631	refactoring code to support non-unix oses	2026-05-22 20:05:09 +09:00