126 files changed, 282 insertions, 29 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1a38453f..2f54a7f2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -12,8 +12,8 @@ add_executable(checkauto ${FLEX_checkauto_OUTPUTS})
 
 include(CTest)
 if(BUILD_TESTING)
-	file(GLOB examples examples/*.c)
-	foreach(file IN LISTS examples)
+	file(GLOB misc/examples misc/examples/*.c)
+	foreach(file IN LISTS misc/examples)
 		get_filename_component(name "${file}" NAME_WE)
 		add_executable(${name} ${file})
 	target_compile_options(${name} PRIVATE "-pthread")
@@ -24,7 +24,7 @@ if(BUILD_TESTING)
 		add_test(NAME ${name} COMMAND ${name})
 	endforeach()
 	# foreach(name IN ITEMS cdeq clist cmap csmap cvec)
-	#	add_executable(${name} benchmarks/plotbench/${name}_benchmark.cpp)
+	#	add_executable(${name} misc/benchmarks/plotbench/${name}_benchmark.cpp)
 	#	target_link_libraries(${name} PRIVATE stc m)
 	#	add_test(NAME ${name} COMMAND ${name})
 	# endforeach()
diff --git a/include/stc/carc.h b/include/stc/carc.h
index 509bc595..22453f1d 100644
--- a/include/stc/carc.h
+++ b/include/stc/carc.h
@@ -78,7 +78,7 @@ int main() {
 #ifndef _i_prefix
 #define _i_prefix carc_
 #endif
-#include "template.h"
+#include "priv/template.h"
 typedef i_keyraw _cx_raw;
 
 #if !c_option(c_no_atomic)
@@ -201,4 +201,4 @@ STC_INLINE uint64_t _cx_memb(_hash)(const _cx_self* x)
 
 #undef _i_atomic_inc
 #undef _i_atomic_dec_and_test
-#include "template.h"
+#include "priv/template.h"
diff --git a/include/stc/carr2.h b/include/stc/carr2.h
index 4a12c2e3..89ae9b77 100644
--- a/include/stc/carr2.h
+++ b/include/stc/carr2.h
@@ -56,7 +56,7 @@ int main() {
 #ifndef _i_prefix
 #define _i_prefix carr2_
 #endif
-#include "template.h"
+#include "priv/template.h"
 #if !c_option(c_is_forward)
 _cx_deftypes(_c_carr2_types, _cx_self, i_key);
 #endif
@@ -149,4 +149,4 @@ STC_DEF void _cx_memb(_drop)(_cx_self* self) {
 }
 
 #endif
-#include "template.h"
+#include "priv/template.h"
diff --git a/include/stc/carr3.h b/include/stc/carr3.h
index c22536cb..d167dd69 100644
--- a/include/stc/carr3.h
+++ b/include/stc/carr3.h
@@ -57,7 +57,7 @@ int main() {
 #ifndef _i_prefix
 #define _i_prefix carr3_
 #endif
-#include "template.h"
+#include "priv/template.h"
 
 #if !c_option(c_is_forward)
 _cx_deftypes(_c_carr3_types, _cx_self, i_key);
@@ -154,4 +154,4 @@ STC_DEF void _cx_memb(_drop)(_cx_self* self) {
 }
 
 #endif
-#include "template.h"
+#include "priv/template.h"
diff --git a/include/stc/cbox.h b/include/stc/cbox.h
index 4cbd5f84..bcb1b275 100644
--- a/include/stc/cbox.h
+++ b/include/stc/cbox.h
@@ -70,7 +70,7 @@ int main() {
 #ifndef _i_prefix
 #define _i_prefix cbox_
 #endif
-#include "template.h"
+#include "priv/template.h"
 typedef i_keyraw _cx_raw;
 
 #if !c_option(c_is_forward)
@@ -174,4 +174,4 @@ STC_INLINE uint64_t _cx_memb(_hash)(const _cx_self* x)
     { _cx_raw rx = i_keyto(x->get); return i_hash(&rx); }
 #endif
 
-#include "template.h"
+#include "priv/template.h"
diff --git a/include/stc/cdeq.h b/include/stc/cdeq.h
index a8a704b4..9416d5b2 100644
--- a/include/stc/cdeq.h
+++ b/include/stc/cdeq.h
@@ -34,7 +34,7 @@
 #ifndef _i_prefix
 #define _i_prefix cdeq_
 #endif
-#include "template.h"
+#include "priv/template.h"
 
 #if !c_option(c_is_forward)
 _cx_deftypes(_c_cdeq_types, _cx_self, i_key);
@@ -425,5 +425,5 @@ _cx_memb(_value_cmp)(const _cx_value* x, const _cx_value* y) {
 #endif // !c_no_cmp
 #endif // !_i_queue
 #endif // IMPLEMENTATION
-#include "template.h"
+#include "priv/template.h"
 #define CDEQ_H_INCLUDED
diff --git a/include/stc/clist.h b/include/stc/clist.h
index 8b96eabf..1ace1dac 100644
--- a/include/stc/clist.h
+++ b/include/stc/clist.h
@@ -83,7 +83,7 @@ _c_clist_complete_types(clist_VOID, dummy);
 #ifndef _i_prefix
 #define _i_prefix clist_
 #endif
-#include "template.h"
+#include "priv/template.h"
 
 #if !c_option(c_is_forward)
   _cx_deftypes(_c_clist_types, _cx_self, i_key);
@@ -442,4 +442,4 @@ _cx_memb(_value_cmp)(const _cx_value* x, const _cx_value* y) {
 #endif // !c_no_cmp
 #endif // i_implement
 #define CLIST_H_INCLUDED
-#include "template.h"
+#include "priv/template.h"
diff --git a/include/stc/cmap.h b/include/stc/cmap.h
index b0793ce5..11edf127 100644
--- a/include/stc/cmap.h
+++ b/include/stc/cmap.h
@@ -73,7 +73,7 @@ typedef struct      { size_t idx; uint8_t hx; } chash_bucket_t;
 #ifndef i_max_load_factor
   #define i_max_load_factor 0.85f
 #endif
-#include "template.h"
+#include "priv/template.h"
 #ifndef i_hash_functor
   #define i_hash_functor(self, x) i_hash(x)
 #endif
@@ -450,4 +450,4 @@ _cx_memb(_erase_entry)(_cx_self* self, _cx_value* _val) {
 #undef _i_MAP_ONLY
 #undef _i_SET_ONLY
 #define CMAP_H_INCLUDED
-#include "template.h"
+#include "priv/template.h"
diff --git a/include/stc/cpque.h b/include/stc/cpque.h
index 9cf4b167..c1e7c13b 100644
--- a/include/stc/cpque.h
+++ b/include/stc/cpque.h
@@ -31,7 +31,7 @@
 #define _i_prefix cpque_
 #endif
 
-#include "template.h"
+#include "priv/template.h"
 #ifndef i_less_functor
   #define i_less_functor(self, x, y) i_less(x, y)
 #endif
@@ -158,4 +158,4 @@ _cx_memb(_push)(_cx_self* self, _cx_value value) {
 #endif
 #define CPQUE_H_INCLUDED
 #undef i_less_functor
-#include "template.h"
+#include "priv/template.h"
diff --git a/include/stc/csmap.h b/include/stc/csmap.h
index 5c73294e..f651db00 100644
--- a/include/stc/csmap.h
+++ b/include/stc/csmap.h
@@ -73,7 +73,7 @@ int main(void) {
   #define _i_SET_ONLY c_false
   #define _i_keyref(vp) (&(vp)->first)
 #endif
-#include "template.h"
+#include "priv/template.h"
 #ifndef i_cmp_functor
   #define i_cmp_functor(self, x, y) i_cmp(x, y)
 #endif
@@ -575,5 +575,5 @@ _cx_memb(_drop)(_cx_self* self) {
 #undef _i_MAP_ONLY
 #undef _i_SET_ONLY
 #define CSMAP_H_INCLUDED
-#include "template.h"
+#include "priv/template.h"
 #endif // !STC_CSMAP_V1
diff --git a/include/stc/cstack.h b/include/stc/cstack.h
index 23778e3c..73d0e2e1 100644
--- a/include/stc/cstack.h
+++ b/include/stc/cstack.h
@@ -31,7 +31,7 @@
 #ifndef _i_prefix
 #define _i_prefix cstack_
 #endif
-#include "template.h"
+#include "priv/template.h"
 
 #if !c_option(c_is_forward)
 #ifdef i_capacity
@@ -183,4 +183,4 @@ STC_INLINE void _cx_memb(_next)(_cx_iter* it)
 STC_INLINE _cx_iter _cx_memb(_advance)(_cx_iter it, intptr_t n)
     { if ((it.ref += n) >= it.end) it.ref = NULL ; return it; }
 
-#include "template.h"
+#include "priv/template.h"
diff --git a/include/stc/cvec.h b/include/stc/cvec.h
index ae6e452c..5eaefa04 100644
--- a/include/stc/cvec.h
+++ b/include/stc/cvec.h
@@ -71,7 +71,7 @@ int main() {
 #ifndef _i_prefix
 #define _i_prefix cvec_
 #endif
-#include "template.h"
+#include "priv/template.h"
 
 #if !c_option(c_is_forward)
    _cx_deftypes(_c_cvec_types, _cx_self, i_key);
@@ -256,7 +256,7 @@ _cx_memb(_sort)(_cx_self* self) {
 
 STC_DEF _cx_self
 _cx_memb(_init)(void) {
-    return (_cx_self){NULL};
+    return c_INIT(_cx_self){NULL};
 }
 
 STC_DEF void
@@ -420,4 +420,4 @@ _cx_memb(_value_cmp)(const _cx_value* x, const _cx_value* y) {
 #endif // !c_no_cmp
 #endif // i_implement
 #define CVEC_H_INCLUDED
-#include "template.h"
+#include "priv/template.h"
diff --git a/include/stc/template.h b/include/stc/priv/template.h
index b7583e82..b7583e82 100644
--- a/include/stc/template.h
+++ b/include/stc/priv/template.h
diff --git a/benchmarks/build_all.sh b/misc/benchmarks/build_all.sh
index 657f8cbf..54340998 100644
--- a/benchmarks/build_all.sh
+++ b/misc/benchmarks/build_all.sh
@@ -1,5 +1,5 @@
 #!/bin/bash
-cc='g++ -I../include -s -O3 -Wall -pedantic -x c++ -std=c++20'
+cc='g++ -I../../include -s -O3 -Wall -pedantic -x c++ -std=c++20'
 #cc='clang++ -I../include -s -O3 -Wall -pedantic -x c++ -std=c++20'
 #cc='cl -nologo -I../include -O2 -TP -EHsc -std:c++20'
 run=0
diff --git a/benchmarks/external/ankerl/robin_hood.h b/misc/benchmarks/external/ankerl/robin_hood.h
index 0af031f5..0af031f5 100644
--- a/benchmarks/external/ankerl/robin_hood.h
+++ b/misc/benchmarks/external/ankerl/robin_hood.h
diff --git a/benchmarks/external/ankerl/unordered_dense.h b/misc/benchmarks/external/ankerl/unordered_dense.h
index ff902ad4..ff902ad4 100644
--- a/benchmarks/external/ankerl/unordered_dense.h
+++ b/misc/benchmarks/external/ankerl/unordered_dense.h
diff --git a/benchmarks/external/emhash/hash_table7.hpp b/misc/benchmarks/external/emhash/hash_table7.hpp
index fdc33fe1..fdc33fe1 100644
--- a/benchmarks/external/emhash/hash_table7.hpp
+++ b/misc/benchmarks/external/emhash/hash_table7.hpp
diff --git a/benchmarks/external/khash.h b/misc/benchmarks/external/khash.h
index 61dabc4d..61dabc4d 100644
--- a/benchmarks/external/khash.h
+++ b/misc/benchmarks/external/khash.h
diff --git a/benchmarks/external/skarupke/flat_hash_map.hpp b/misc/benchmarks/external/skarupke/flat_hash_map.hpp
index a8723ee8..a8723ee8 100644
--- a/benchmarks/external/skarupke/flat_hash_map.hpp
+++ b/misc/benchmarks/external/skarupke/flat_hash_map.hpp
diff --git a/benchmarks/external/tsl/robin_growth_policy.h b/misc/benchmarks/external/tsl/robin_growth_policy.h
index eba8cdfa..eba8cdfa 100644
--- a/benchmarks/external/tsl/robin_growth_policy.h
+++ b/misc/benchmarks/external/tsl/robin_growth_policy.h
diff --git a/benchmarks/external/tsl/robin_hash.h b/misc/benchmarks/external/tsl/robin_hash.h
index 89c7c96f..89c7c96f 100644
--- a/benchmarks/external/tsl/robin_hash.h
+++ b/misc/benchmarks/external/tsl/robin_hash.h
diff --git a/benchmarks/external/tsl/robin_map.h b/misc/benchmarks/external/tsl/robin_map.h
index aeb354c3..aeb354c3 100644
--- a/benchmarks/external/tsl/robin_map.h
+++ b/misc/benchmarks/external/tsl/robin_map.h
diff --git a/benchmarks/external/update.sh b/misc/benchmarks/external/update.sh
index 45b472b1..45b472b1 100644
--- a/benchmarks/external/update.sh
+++ b/misc/benchmarks/external/update.sh
diff --git a/benchmarks/misc/cbits_benchmark.cpp b/misc/benchmarks/misc/cbits_benchmark.cpp
index dd709db1..dd709db1 100644
--- a/benchmarks/misc/cbits_benchmark.cpp
+++ b/misc/benchmarks/misc/cbits_benchmark.cpp
diff --git a/benchmarks/misc/names.txt b/misc/benchmarks/misc/names.txt
index 561acbbf..561acbbf 100644
--- a/benchmarks/misc/names.txt
+++ b/misc/benchmarks/misc/names.txt
diff --git a/benchmarks/misc/prng_bench.cpp b/misc/benchmarks/misc/prng_bench.cpp
index 6f4e0e47..6f4e0e47 100644
--- a/benchmarks/misc/prng_bench.cpp
+++ b/misc/benchmarks/misc/prng_bench.cpp
diff --git a/benchmarks/misc/rust_cmap.c b/misc/benchmarks/misc/rust_cmap.c
index 83b7dd19..83b7dd19 100644
--- a/benchmarks/misc/rust_cmap.c
+++ b/misc/benchmarks/misc/rust_cmap.c
diff --git a/benchmarks/misc/rust_hashmap.rs b/misc/benchmarks/misc/rust_hashmap.rs
index 5394a7c3..5394a7c3 100644
--- a/benchmarks/misc/rust_hashmap.rs
+++ b/misc/benchmarks/misc/rust_hashmap.rs
diff --git a/benchmarks/misc/sso_bench.cpp b/misc/benchmarks/misc/sso_bench.cpp
index 0fffef7a..0fffef7a 100644
--- a/benchmarks/misc/sso_bench.cpp
+++ b/misc/benchmarks/misc/sso_bench.cpp
diff --git a/benchmarks/misc/string_bench_STC.cpp b/misc/benchmarks/misc/string_bench_STC.cpp
index ae8e4c38..ae8e4c38 100644
--- a/benchmarks/misc/string_bench_STC.cpp
+++ b/misc/benchmarks/misc/string_bench_STC.cpp
diff --git a/benchmarks/misc/string_bench_STD.cpp b/misc/benchmarks/misc/string_bench_STD.cpp
index 8bb87937..8bb87937 100644
--- a/benchmarks/misc/string_bench_STD.cpp
+++ b/misc/benchmarks/misc/string_bench_STD.cpp
diff --git a/benchmarks/picobench/picobench.hpp b/misc/benchmarks/picobench/picobench.hpp
index 2e4541e0..2e4541e0 100644
--- a/benchmarks/picobench/picobench.hpp
+++ b/misc/benchmarks/picobench/picobench.hpp
diff --git a/benchmarks/picobench/picobench_cmap.cpp b/misc/benchmarks/picobench/picobench_cmap.cpp
index 3ffba5b9..3ffba5b9 100644
--- a/benchmarks/picobench/picobench_cmap.cpp
+++ b/misc/benchmarks/picobench/picobench_cmap.cpp
diff --git a/benchmarks/picobench/picobench_csmap.cpp b/misc/benchmarks/picobench/picobench_csmap.cpp
index 5caab6cc..5caab6cc 100644
--- a/benchmarks/picobench/picobench_csmap.cpp
+++ b/misc/benchmarks/picobench/picobench_csmap.cpp
diff --git a/benchmarks/pics/benchmark.gif b/misc/benchmarks/pics/benchmark.gif
index 90f47fff..90f47fff 100644
--- a/benchmarks/pics/benchmark.gif
+++ b/misc/benchmarks/pics/benchmark.gif
diff --git a/benchmarks/plotbench/cdeq_benchmark.cpp b/misc/benchmarks/plotbench/cdeq_benchmark.cpp
index 1259cc07..1259cc07 100644
--- a/benchmarks/plotbench/cdeq_benchmark.cpp
+++ b/misc/benchmarks/plotbench/cdeq_benchmark.cpp
diff --git a/benchmarks/plotbench/clist_benchmark.cpp b/misc/benchmarks/plotbench/clist_benchmark.cpp
index 04c8e8cd..04c8e8cd 100644
--- a/benchmarks/plotbench/clist_benchmark.cpp
+++ b/misc/benchmarks/plotbench/clist_benchmark.cpp
diff --git a/benchmarks/plotbench/cmap_benchmark.cpp b/misc/benchmarks/plotbench/cmap_benchmark.cpp
index 7a8f29d2..7a8f29d2 100644
--- a/benchmarks/plotbench/cmap_benchmark.cpp
+++ b/misc/benchmarks/plotbench/cmap_benchmark.cpp
diff --git a/benchmarks/plotbench/cpque_benchmark.cpp b/misc/benchmarks/plotbench/cpque_benchmark.cpp
index a729c09f..a729c09f 100644
--- a/benchmarks/plotbench/cpque_benchmark.cpp
+++ b/misc/benchmarks/plotbench/cpque_benchmark.cpp
diff --git a/benchmarks/plotbench/csmap_benchmark.cpp b/misc/benchmarks/plotbench/csmap_benchmark.cpp
index 46bd695c..46bd695c 100644
--- a/benchmarks/plotbench/csmap_benchmark.cpp
+++ b/misc/benchmarks/plotbench/csmap_benchmark.cpp
diff --git a/benchmarks/plotbench/cvec_benchmark.cpp b/misc/benchmarks/plotbench/cvec_benchmark.cpp
index fe7e09fb..fe7e09fb 100644
--- a/benchmarks/plotbench/cvec_benchmark.cpp
+++ b/misc/benchmarks/plotbench/cvec_benchmark.cpp
diff --git a/benchmarks/plotbench/plot.py b/misc/benchmarks/plotbench/plot.py
index fa538285..fa538285 100644
--- a/benchmarks/plotbench/plot.py
+++ b/misc/benchmarks/plotbench/plot.py
diff --git a/benchmarks/plotbench/run_all.bat b/misc/benchmarks/plotbench/run_all.bat
index 2edd0a1e..2edd0a1e 100644
--- a/benchmarks/plotbench/run_all.bat
+++ b/misc/benchmarks/plotbench/run_all.bat
diff --git a/benchmarks/plotbench/run_all.sh b/misc/benchmarks/plotbench/run_all.sh
index f15a5881..f15a5881 100644
--- a/benchmarks/plotbench/run_all.sh
+++ b/misc/benchmarks/plotbench/run_all.sh
diff --git a/benchmarks/plotbench/run_clang.sh b/misc/benchmarks/plotbench/run_clang.sh
index ae19486e..ae19486e 100644
--- a/benchmarks/plotbench/run_clang.sh
+++ b/misc/benchmarks/plotbench/run_clang.sh
diff --git a/benchmarks/plotbench/run_gcc.sh b/misc/benchmarks/plotbench/run_gcc.sh
index 6a6472c0..6a6472c0 100644
--- a/benchmarks/plotbench/run_gcc.sh
+++ b/misc/benchmarks/plotbench/run_gcc.sh
diff --git a/benchmarks/plotbench/run_vc.bat b/misc/benchmarks/plotbench/run_vc.bat
index 3dca925b..3dca925b 100644
--- a/benchmarks/plotbench/run_vc.bat
+++ b/misc/benchmarks/plotbench/run_vc.bat
diff --git a/benchmarks/shootout_hashmaps.cpp b/misc/benchmarks/shootout_hashmaps.cpp
index 78d7bce2..78d7bce2 100644
--- a/benchmarks/shootout_hashmaps.cpp
+++ b/misc/benchmarks/shootout_hashmaps.cpp
diff --git a/examples/README.md b/misc/examples/README.md
index 4c0aa763..4c0aa763 100644
--- a/examples/README.md
+++ b/misc/examples/README.md
diff --git a/examples/arc_containers.c b/misc/examples/arc_containers.c
index b577f2c8..b577f2c8 100644
--- a/examples/arc_containers.c
+++ b/misc/examples/arc_containers.c
diff --git a/examples/arc_demo.c b/misc/examples/arc_demo.c
index 087f90ac..087f90ac 100644
--- a/examples/arc_demo.c
+++ b/misc/examples/arc_demo.c
diff --git a/examples/arcvec_erase.c b/misc/examples/arcvec_erase.c
index c70d59d9..c70d59d9 100644
--- a/examples/arcvec_erase.c
+++ b/misc/examples/arcvec_erase.c
diff --git a/examples/astar.c b/misc/examples/astar.c
index d4a821f9..d4a821f9 100644
--- a/examples/astar.c
+++ b/misc/examples/astar.c
diff --git a/examples/birthday.c b/misc/examples/birthday.c
index 48b8ceaa..48b8ceaa 100644
--- a/examples/birthday.c
+++ b/misc/examples/birthday.c
diff --git a/examples/bits.c b/misc/examples/bits.c
index 82fd65ec..82fd65ec 100644
--- a/examples/bits.c
+++ b/misc/examples/bits.c
diff --git a/examples/bits2.c b/misc/examples/bits2.c
index 59e0b337..59e0b337 100644
--- a/examples/bits2.c
+++ b/misc/examples/bits2.c
diff --git a/examples/books.c b/misc/examples/books.c
index b6067d81..b6067d81 100644
--- a/examples/books.c
+++ b/misc/examples/books.c
diff --git a/examples/box.c b/misc/examples/box.c
index da13501f..da13501f 100644
--- a/examples/box.c
+++ b/misc/examples/box.c
diff --git a/examples/box2.c b/misc/examples/box2.c
index b9628eeb..b9628eeb 100644
--- a/examples/box2.c
+++ b/misc/examples/box2.c
diff --git a/examples/city.c b/misc/examples/city.c
index 8557c6cf..8557c6cf 100644
--- a/examples/city.c
+++ b/misc/examples/city.c
diff --git a/examples/complex.c b/misc/examples/complex.c
index dd2f951a..dd2f951a 100644
--- a/examples/complex.c
+++ b/misc/examples/complex.c
diff --git a/examples/convert.c b/misc/examples/convert.c
index 18be3c81..18be3c81 100644
--- a/examples/convert.c
+++ b/misc/examples/convert.c
diff --git a/examples/cpque.c b/misc/examples/cpque.c
index 7254b0f7..7254b0f7 100644
--- a/examples/cpque.c
+++ b/misc/examples/cpque.c
diff --git a/examples/csmap_erase.c b/misc/examples/csmap_erase.c
index 48d8ceef..48d8ceef 100644
--- a/examples/csmap_erase.c
+++ b/misc/examples/csmap_erase.c
diff --git a/examples/csmap_find.c b/misc/examples/csmap_find.c
index 3c507476..3c507476 100644
--- a/examples/csmap_find.c
+++ b/misc/examples/csmap_find.c
diff --git a/examples/csmap_insert.c b/misc/examples/csmap_insert.c
index 8f777fc6..8f777fc6 100644
--- a/examples/csmap_insert.c
+++ b/misc/examples/csmap_insert.c
diff --git a/examples/csset_erase.c b/misc/examples/csset_erase.c
index 33eb2163..33eb2163 100644
--- a/examples/csset_erase.c
+++ b/misc/examples/csset_erase.c
diff --git a/examples/cstr_match.c b/misc/examples/cstr_match.c
index 286ba505..286ba505 100644
--- a/examples/cstr_match.c
+++ b/misc/examples/cstr_match.c
diff --git a/examples/demos.c b/misc/examples/demos.c
index fc3771cb..fc3771cb 100644
--- a/examples/demos.c
+++ b/misc/examples/demos.c
diff --git a/examples/forfilter.c b/misc/examples/forfilter.c
index ba4dce7f..ba4dce7f 100644
--- a/examples/forfilter.c
+++ b/misc/examples/forfilter.c
diff --git a/examples/forloops.c b/misc/examples/forloops.c
index 2654f095..2654f095 100644
--- a/examples/forloops.c
+++ b/misc/examples/forloops.c
diff --git a/examples/gauss1.c b/misc/examples/gauss1.c
index 675ff338..675ff338 100644
--- a/examples/gauss1.c
+++ b/misc/examples/gauss1.c
diff --git a/examples/gauss2.c b/misc/examples/gauss2.c
index 2e07c5a5..2e07c5a5 100644
--- a/examples/gauss2.c
+++ b/misc/examples/gauss2.c
diff --git a/examples/hashmap.c b/misc/examples/hashmap.c
index f59ed824..f59ed824 100644
--- a/examples/hashmap.c
+++ b/misc/examples/hashmap.c
diff --git a/examples/inits.c b/misc/examples/inits.c
index 021a3e0a..021a3e0a 100644
--- a/examples/inits.c
+++ b/misc/examples/inits.c
diff --git a/examples/intrusive.c b/misc/examples/intrusive.c
index acf4416d..acf4416d 100644
--- a/examples/intrusive.c
+++ b/misc/examples/intrusive.c
diff --git a/examples/list.c b/misc/examples/list.c
index a538d93c..a538d93c 100644
--- a/examples/list.c
+++ b/misc/examples/list.c
diff --git a/examples/list_erase.c b/misc/examples/list_erase.c
index c1a2aa97..c1a2aa97 100644
--- a/examples/list_erase.c
+++ b/misc/examples/list_erase.c
diff --git a/examples/list_splice.c b/misc/examples/list_splice.c
index f7bac0d6..f7bac0d6 100644
--- a/examples/list_splice.c
+++ b/misc/examples/list_splice.c
diff --git a/examples/lower_bound.c b/misc/examples/lower_bound.c
index 2477bc14..2477bc14 100644
--- a/examples/lower_bound.c
+++ b/misc/examples/lower_bound.c
diff --git a/examples/make.sh b/misc/examples/make.sh
index bd1392fc..bd1392fc 100755
--- a/examples/make.sh
+++ b/misc/examples/make.sh
diff --git a/examples/mapmap.c b/misc/examples/mapmap.c
index 488cc539..488cc539 100644
--- a/examples/mapmap.c
+++ b/misc/examples/mapmap.c
diff --git a/examples/mmap.c b/misc/examples/mmap.c
index 3934cf26..3934cf26 100644
--- a/examples/mmap.c
+++ b/misc/examples/mmap.c
diff --git a/examples/multimap.c b/misc/examples/multimap.c
index e72bdce3..e72bdce3 100644
--- a/examples/multimap.c
+++ b/misc/examples/multimap.c
diff --git a/examples/music_arc.c b/misc/examples/music_arc.c
index 162c4c2f..162c4c2f 100644
--- a/examples/music_arc.c
+++ b/misc/examples/music_arc.c
diff --git a/examples/new_arr.c b/misc/examples/new_arr.c
index 871cfae0..871cfae0 100644
--- a/examples/new_arr.c
+++ b/misc/examples/new_arr.c
diff --git a/examples/new_deq.c b/misc/examples/new_deq.c
index 39149140..39149140 100644
--- a/examples/new_deq.c
+++ b/misc/examples/new_deq.c
diff --git a/examples/new_list.c b/misc/examples/new_list.c
index 6dbe80b4..6dbe80b4 100644
--- a/examples/new_list.c
+++ b/misc/examples/new_list.c
diff --git a/examples/new_map.c b/misc/examples/new_map.c
index f43d4217..f43d4217 100644
--- a/examples/new_map.c
+++ b/misc/examples/new_map.c
diff --git a/examples/new_pque.c b/misc/examples/new_pque.c
index 2bb1d729..2bb1d729 100644
--- a/examples/new_pque.c
+++ b/misc/examples/new_pque.c
diff --git a/examples/new_queue.c b/misc/examples/new_queue.c
index bc7a95c9..bc7a95c9 100644
--- a/examples/new_queue.c
+++ b/misc/examples/new_queue.c
diff --git a/examples/new_smap.c b/misc/examples/new_smap.c
index c77aa185..c77aa185 100644
--- a/examples/new_smap.c
+++ b/misc/examples/new_smap.c
diff --git a/examples/new_sptr.c b/misc/examples/new_sptr.c
index 2c6b28d6..2c6b28d6 100644
--- a/examples/new_sptr.c
+++ b/misc/examples/new_sptr.c
diff --git a/examples/new_vec.c b/misc/examples/new_vec.c
index 84e4c7b2..84e4c7b2 100644
--- a/examples/new_vec.c
+++ b/misc/examples/new_vec.c
diff --git a/examples/person_arc.c b/misc/examples/person_arc.c
index a7bf2a6f..a7bf2a6f 100644
--- a/examples/person_arc.c
+++ b/misc/examples/person_arc.c
diff --git a/examples/phonebook.c b/misc/examples/phonebook.c
index be068409..be068409 100644
--- a/examples/phonebook.c
+++ b/misc/examples/phonebook.c
diff --git a/examples/prime.c b/misc/examples/prime.c
index 287fb69b..287fb69b 100644
--- a/examples/prime.c
+++ b/misc/examples/prime.c
diff --git a/examples/priority.c b/misc/examples/priority.c
index f6e63205..f6e63205 100644
--- a/examples/priority.c
+++ b/misc/examples/priority.c
diff --git a/examples/queue.c b/misc/examples/queue.c
index f39c4b8b..f39c4b8b 100644
--- a/examples/queue.c
+++ b/misc/examples/queue.c
diff --git a/examples/random.c b/misc/examples/random.c
index fe64290d..fe64290d 100644
--- a/examples/random.c
+++ b/misc/examples/random.c
diff --git a/examples/rawptr_elements.c b/misc/examples/rawptr_elements.c
index 4b3d2056..4b3d2056 100644
--- a/examples/rawptr_elements.c
+++ b/misc/examples/rawptr_elements.c
diff --git a/examples/read.c b/misc/examples/read.c
index 4efdcfeb..4efdcfeb 100644
--- a/examples/read.c
+++ b/misc/examples/read.c
diff --git a/examples/regex1.c b/misc/examples/regex1.c
index 7a22220d..7a22220d 100644
--- a/examples/regex1.c
+++ b/misc/examples/regex1.c
diff --git a/examples/regex2.c b/misc/examples/regex2.c
index dbf6aae4..dbf6aae4 100644
--- a/examples/regex2.c
+++ b/misc/examples/regex2.c
diff --git a/examples/regex_match.c b/misc/examples/regex_match.c
index 376b002e..376b002e 100644
--- a/examples/regex_match.c
+++ b/misc/examples/regex_match.c
diff --git a/examples/regex_replace.c b/misc/examples/regex_replace.c
index e296dfd8..e296dfd8 100644
--- a/examples/regex_replace.c
+++ b/misc/examples/regex_replace.c
diff --git a/examples/replace.c b/misc/examples/replace.c
index 15cf3bae..15cf3bae 100644
--- a/examples/replace.c
+++ b/misc/examples/replace.c
diff --git a/examples/shape.c b/misc/examples/shape.c
index a17208ef..a17208ef 100644
--- a/examples/shape.c
+++ b/misc/examples/shape.c
diff --git a/examples/shape.cpp b/misc/examples/shape.cpp
index ea1f53d2..ea1f53d2 100644
--- a/examples/shape.cpp
+++ b/misc/examples/shape.cpp
diff --git a/examples/sidebyside.cpp b/misc/examples/sidebyside.cpp
index 80c934a4..80c934a4 100644
--- a/examples/sidebyside.cpp
+++ b/misc/examples/sidebyside.cpp
diff --git a/examples/sorted_map.c b/misc/examples/sorted_map.c
index c4a05c76..c4a05c76 100644
--- a/examples/sorted_map.c
+++ b/misc/examples/sorted_map.c
diff --git a/examples/splitstr.c b/misc/examples/splitstr.c
index a3c12a3a..a3c12a3a 100644
--- a/examples/splitstr.c
+++ b/misc/examples/splitstr.c
diff --git a/examples/sso_map.c b/misc/examples/sso_map.c
index cc5e16a1..cc5e16a1 100644
--- a/examples/sso_map.c
+++ b/misc/examples/sso_map.c
diff --git a/examples/sso_substr.c b/misc/examples/sso_substr.c
index be372a8d..be372a8d 100644
--- a/examples/sso_substr.c
+++ b/misc/examples/sso_substr.c
diff --git a/examples/stack.c b/misc/examples/stack.c
index a6a4a492..a6a4a492 100644
--- a/examples/stack.c
+++ b/misc/examples/stack.c
diff --git a/examples/sview_split.c b/misc/examples/sview_split.c
index d22fccd1..d22fccd1 100644
--- a/examples/sview_split.c
+++ b/misc/examples/sview_split.c
diff --git a/examples/unordered_set.c b/misc/examples/unordered_set.c
index a0b639da..a0b639da 100644
--- a/examples/unordered_set.c
+++ b/misc/examples/unordered_set.c
diff --git a/examples/utf8replace_c.c b/misc/examples/utf8replace_c.c
index 22a5c990..22a5c990 100644
--- a/examples/utf8replace_c.c
+++ b/misc/examples/utf8replace_c.c
diff --git a/examples/utf8replace_rs.rs b/misc/examples/utf8replace_rs.rs
index 717978aa..717978aa 100644
--- a/examples/utf8replace_rs.rs
+++ b/misc/examples/utf8replace_rs.rs
diff --git a/examples/vikings.c b/misc/examples/vikings.c
index 26a74757..26a74757 100644
--- a/examples/vikings.c
+++ b/misc/examples/vikings.c
diff --git a/examples/words.c b/misc/examples/words.c
index 097447aa..097447aa 100644
--- a/examples/words.c
+++ b/misc/examples/words.c
diff --git a/include/stc/alt/csmap.h b/misc/include/alt/csmap.h
index 65a9f80b..4b4e764c 100644
--- a/include/stc/alt/csmap.h
+++ b/misc/include/alt/csmap.h
@@ -70,7 +70,7 @@ int main(void) {
   #define _i_SET_ONLY c_false
   #define _i_keyref(vp) (&(vp)->first)
 #endif
-#include <stc/template.h>
+#include <stc/priv/template.h>
 
 #if !c_option(c_is_forward)
 _cx_deftypes(_c_aatree_types, _cx_self, i_key, i_val, i_size, _i_MAP_ONLY, _i_SET_ONLY);
@@ -509,4 +509,4 @@ _cx_memb(_drop)(_cx_self* self) {
 #undef _i_MAP_ONLY
 #undef _i_SET_ONLY
 #define CSMAP_H_INCLUDED
-#include <stc/template.h>
+#include <stc/priv/template.h>
diff --git a/include/stc/alt/cstr.h b/misc/include/alt/cstr.h
index ecb9c9fb..ecb9c9fb 100644
--- a/include/stc/alt/cstr.h
+++ b/misc/include/alt/cstr.h
diff --git a/misc/include/fmt.h b/misc/include/fmt.h
new file mode 100644
index 00000000..df1fe990
--- /dev/null
+++ b/misc/include/fmt.h
@@ -0,0 +1,253 @@
+#ifndef FMT_INCLUDED

+#define FMT_INCLUDED

+/*

+void        fmt_print(dst, fmt, ...);

+void        fmt_destroy(fmt_buffer* buf);

+

+  dst - destination 

+    int             1=stdout, 2=stderr

+    FILE* file      Write to a file

+    char* strbuf    Write to a pre-allocated string buffer

+    fmt_buffer* b   Auto realloc the needed memory. Set b->stream=1 for stream-mode.

+                    b->data must be freed after usage.

+

+  fmt - format string

+    {}              Auto-detected format. If :MOD is not specified,

+                    float will use ".8g" format, and double ".16g".

+    {:MOD}          Format modifiers: < left align (replaces -), default for char*, char.

+                                      > right align, default for numbers.

+                    Other than that MOD can be normal printf format modifiers.

+    {{, }}          Print chars {, and }. (note: a single % prints %).

+

+* C11 or higher required.

+* MAX 255 chars fmt string by default. MAX 12 arguments after fmt string.

+* Static linking by default, shared symbols by defining FMT_HEADER / FMT_IMPLEMENT.

+* (c) operamint, 2022, MIT License.

+-----------------------------------------------------------------------------------

+#include "fmt.h"

+

+int main() {

+    const double pi = 3.141592653589793;

+    const size_t x = 1234567890;

+    const char* string = "Hello world";

+    const char z = 'z';

+    _Bool flag = 1;

+    unsigned char r = 123, g = 214, b = 90, w = 110;

+    char buffer[64];

+

+    fmt_print(1, "Color: ({} {} {}), {}\n", r, g, b, flag);

+    fmt_print(1, "{:10} {:10} {:10.2f}\n", 42ull, 43, pi);

+    fmt_print(stdout, "{:>10} {:>10} {:>10}\n", z, z, w);

+    fmt_print(stdout, "{:10} {:10} {:10}\n", "Hello", "Mad", "World");

+    fmt_print(stderr, "100%: {:<20} {:.*} {}\n", string, 4, pi, x);

+    fmt_print(buffer, "Precision: {} {:.10} {}", string, pi, x);

+    fmt_print(1, "{}\n", buffer);

+    fmt_print(1, "Vector: ({}, {}, {})\n", 3.2, 3.3, pi);

+

+    fmt_buffer out[1] = {{.stream=1}};

+    fmt_print(out, "{} {}", "Pi is:", pi);

+    fmt_print(1,   "{}, len={}, cap={}\n", out->data, out->len, out->cap);

+    fmt_print(out, "{} {}", ", Pi squared is:", pi*pi);

+    fmt_print(1,   "{}, len={}, cap={}\n", out->data, out->len, out->cap);

+    fmt_destroy(out);

+}

+*/

+#include <stdio.h>

+#include <assert.h>

+

+#define fmt_OVERLOAD(name, ...) \

+    fmt_JOIN(name, fmt_NUMARGS(__VA_ARGS__))(__VA_ARGS__)

+#define fmt_CONCAT(a, b) a ## b

+#define fmt_JOIN(a, b) fmt_CONCAT(a, b)

+#define fmt_EXPAND(...) __VA_ARGS__

+#define fmt_NUMARGS(...) _fmt_APPLY_ARG_N((__VA_ARGS__, _fmt_RSEQ_N))

+

+#define _fmt_APPLY_ARG_N(args) fmt_EXPAND(_fmt_ARG_N args)

+#define _fmt_RSEQ_N 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0

+#define _fmt_ARG_N(_1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, \

+                   _14, _15, _16, N, ...) N

+

+#if defined FMT_HEADER || defined FMT_IMPLEMENT

+#  define FMT_API

+#else

+#  define FMT_API static inline

+#endif

+

+typedef struct { 

+    char* data; 

+    size_t cap, len; 

+    _Bool stream;

+} fmt_buffer;

+

+FMT_API void fmt_destroy(fmt_buffer* buf);

+FMT_API int  _fmt_parse(char* p, int nargs, const char *fmt, ...);

+FMT_API void _fmt_iprint(int fd, const char* fmt, ...);

+FMT_API void _fmt_bprint(fmt_buffer*, const char* fmt, ...);

+

+#ifndef FMT_MAX

+#define FMT_MAX 256

+#endif

+

+/* Primary function. */

+#define fmt_print(...) fmt_OVERLOAD(fmt_print, __VA_ARGS__)

+#define fmt_print2(to, fmt) \

+    do { char _fs[FMT_MAX]; int _n = _fmt_parse(_fs, 0, fmt); \

+        assert(_n == 0); _fmt_fn(to)(to, fmt); } while (0)

+#define fmt_print3(to, fmt, c) \

+    do { char _fs[FMT_MAX]; int _n = _fmt_parse(_fs, 1, fmt, _fc(c)); \

+        assert(_n == 1); _fmt_fn(to)(to, _fs, c); } while (0)

+#define fmt_print4(to, fmt, c, d) \

+    do { char _fs[FMT_MAX]; int _n = _fmt_parse(_fs, 2, fmt, _fc(c), _fc(d)); \

+        assert(_n == 2); _fmt_fn(to)(to, _fs, c, d); } while (0)

+#define fmt_print5(to, fmt, c, d, e) \

+    do { char _fs[FMT_MAX]; int _n = _fmt_parse(_fs, 3, fmt, _fc(c), _fc(d), _fc(e)); \

+        assert(_n == 3); _fmt_fn(to)(to, _fs, c, d, e); } while (0)

+#define fmt_print6(to, fmt, c, d, e, f) \

+    do { char _fs[FMT_MAX]; int _n = _fmt_parse(_fs, 4, fmt, _fc(c), _fc(d), _fc(e), _fc(f)); \

+        assert(_n == 4); _fmt_fn(to)(to, _fs, c, d, e, f); } while (0)

+#define fmt_print7(to, fmt, c, d, e, f, g) \

+    do { char _fs[FMT_MAX]; int _n = _fmt_parse(_fs, 5, fmt, _fc(c), _fc(d), _fc(e), _fc(f), _fc(g)); \

+        assert(_n == 5); _fmt_fn(to)(to, _fs, c, d, e, f, g); } while (0)

+#define fmt_print8(to, fmt, c, d, e, f, g, h) \

+    do { char _fs[FMT_MAX]; int _n = _fmt_parse(_fs, 6, fmt, _fc(c), _fc(d), _fc(e), _fc(f), _fc(g), _fc(h)); \

+        assert(_n == 6); _fmt_fn(to)(to, _fs, c, d, e, f, g, h); } while (0)

+#define fmt_print9(to, fmt, c, d, e, f, g, h, i) \

+    do { char _fs[FMT_MAX]; int _n = _fmt_parse(_fs, 7, fmt, _fc(c), _fc(d), _fc(e), _fc(f), _fc(g), _fc(h), _fc(i)); \

+        assert(_n == 7); _fmt_fn(to)(to, _fs, c, d, e, f, g, h, i); } while (0)

+#define fmt_print10(to, fmt, c, d, e, f, g, h, i, j) \

+    do { char _fs[FMT_MAX]; int _n = _fmt_parse(_fs, 8, fmt, _fc(c), _fc(d), _fc(e), _fc(f), _fc(g), _fc(h), \

+                                                                     _fc(i), _fc(j)); \

+        assert(_n == 8); _fmt_fn(to)(to, _fs, c, d, e, f, g, h, i, j); } while (0)

+#define fmt_print11(to, fmt, c, d, e, f, g, h, i, j, k) \

+    do { char _fs[FMT_MAX]; int _n = _fmt_parse(_fs, 9, fmt, _fc(c), _fc(d), _fc(e), _fc(f), _fc(g), _fc(h), \

+                                                                     _fc(i), _fc(j), _fc(k)); \

+        assert(_n == 9); _fmt_fn(to)(to, _fs, c, d, e, f, g, h, i, j, k); } while (0)

+#define fmt_print12(to, fmt, c, d, e, f, g, h, i, j, k, m) \

+    do { char _fs[FMT_MAX]; int _n = _fmt_parse(_fs, 10, fmt, _fc(c), _fc(d), _fc(e), _fc(f), _fc(g), _fc(h), \

+                                                                      _fc(i), _fc(j), _fc(k), _fc(m)); \

+        assert(_n == 10); _fmt_fn(to)(to, _fs, c, d, e, f, g, h, i, j, k, m); } while (0)

+#define fmt_print13(to, fmt, c, d, e, f, g, h, i, j, k, m, n) \

+    do { char _fs[FMT_MAX]; int _n = _fmt_parse(_fs, 11, fmt, _fc(c), _fc(d), _fc(e), _fc(f), _fc(g), _fc(h), \

+                                                                      _fc(i), _fc(j), _fc(k), _fc(m), _fc(n)); \

+        assert(_n == 11); _fmt_fn(to)(to, _fs, c, d, e, f, g, h, i, j, k, m, n); } while (0)

+#define fmt_print14(to, fmt, c, d, e, f, g, h, i, j, k, m, n, o) \

+    do { char _fs[FMT_MAX]; int _n = _fmt_parse(_fs, 12, fmt, _fc(c), _fc(d), _fc(e), _fc(f), _fc(g), _fc(h), \

+                                                                      _fc(i), _fc(j), _fc(k), _fc(m), _fc(n), _fc(o)); \

+        assert(_n == 12); _fmt_fn(to)(to, _fs, c, d, e, f, g, h, i, j, k, m, n, o); } while (0)

+

+#define _fmt_fn(x) _Generic ((x), \

+    FILE*: fprintf, \

+    char*: sprintf, \

+    int: _fmt_iprint, \

+    fmt_buffer*: _fmt_bprint)

+

+#if defined(_MSC_VER) && !defined(__clang__)

+#  define _signed_char_hhd

+#else

+#  define _signed_char_hhd signed char: "hhd",

+#endif

+

+#define _fc(x) _Generic (x, \

+    _Bool: "d", \

+    unsigned char: "hhu", \

+    _signed_char_hhd \

+    char: "c", \

+    short: "hd", \

+    unsigned short: "hu", \

+    int: "d", \

+    unsigned: "u", \

+    long: "ld", \

+    unsigned long: "lu", \

+    long long: "lld", \

+    unsigned long long: "llu", \

+    float: "g", \

+    double: "@g", \

+    long double: "@Lg", \

+    char*: "s", \

+    void*: "p", \

+    const char*: "s", \

+    const void*: "p")

+

+#if defined FMT_IMPLEMENT || !(defined FMT_HEADER || defined FMT_IMPLEMENT)

+

+#include <stdlib.h>

+#include <stdarg.h>

+#include <string.h>

+

+FMT_API void fmt_destroy(fmt_buffer* buf) {

+    free(buf->data);

+}

+

+FMT_API void _fmt_iprint(int fd, const char* fmt, ...) {

+    va_list args;

+    va_start(args, fmt);

+    vfprintf(fd == 1 ? stdout : stderr, fmt, args);

+    va_end(args);

+}

+

+FMT_API void _fmt_bprint(fmt_buffer* buf, const char* fmt, ...) {

+    va_list args, args2;

+    va_start(args, fmt);

+    va_copy(args2, args);

+    const int n = vsnprintf(NULL, 0U, fmt, args);

+    const size_t pos = buf->stream ? buf->len : 0U;

+    buf->len = pos + (size_t)n;

+    if (buf->len > buf->cap) {

+        buf->cap = buf->len + buf->cap/2;

+        buf->data = (char*)realloc(buf->data, buf->cap + 1);

+    }

+    vsprintf(buf->data + pos, fmt, args2);

+    va_end(args2);

+    va_end(args);

+}

+

+FMT_API int _fmt_parse(char* p, int nargs, const char *fmt, ...) {

+    char *arg, *p0, ch;

+    int n = 0, empty;

+    va_list args;

+    va_start(args, fmt);

+    do {

+        switch ((ch = *fmt)) {

+        case '%':

+            *p++ = '%';

+            break;

+        case '}':

+            if (*++fmt == '}') break; /* ok */

+            n = 99;

+            continue;

+        case '{':

+            if (*++fmt == '{') break; /* ok */

+            if (++n > nargs) continue;

+            if (*fmt != ':' && *fmt != '}') n = 99;

+            fmt += (*fmt == ':');

+            empty = *fmt == '}';

+            arg = va_arg(args, char *);

+            *p++ = '%', p0 = p;

+            while (1) switch (*fmt) {

+                case '\0': n = 99; /* nobreak */

+                case '}': goto done;

+                case '<': *p++ = '-', ++fmt; break;

+                case '>': p0 = NULL; /* nobreak */

+                case '-': ++fmt; break;

+                case '*': if (++n <= nargs) arg = va_arg(args, char *); /* nobreak */

+                default: *p++ = *fmt++;

+            }

+            done:

+            switch (*arg) {

+            case 'g': if (empty) memcpy(p, ".8", 2), p += 2; break;

+            case '@': ++arg; if (empty) memcpy(p, ".16", 3), p += 3; break;

+            }

+            if (!strchr("csdioxXufFeEaAgGnp", fmt[-1]))

+                while (*arg) *p++ = *arg++;

+            if (p0 && (p[-1] == 's' || p[-1] == 'c')) /* left-align str */

+                memmove(p0 + 1, p0, p++ - p0), *p0 = '-';

+            fmt += *fmt == '}';

+            continue;

+        }

+        *p++ = *fmt++;

+    } while (ch);

+    va_end(args);

+    return n;

+}

+#endif

+#endif
\ No newline at end of file
diff --git a/include/stc/stctest.h b/misc/include/stctest.h
index 9718af7f..9718af7f 100644
--- a/include/stc/stctest.h
+++ b/misc/include/stctest.h
diff --git a/tests/cregex_test.c b/misc/tests/cregex_test.c
index b9642159..b9642159 100644
--- a/tests/cregex_test.c
+++ b/misc/tests/cregex_test.c