Merge pull request #561 from brodykenrick/master

Unicode support for search, length and STRING[] accesses (+ a fix for 3rd Party CGAL lib issue on Ubunti)

4 files changed, 280 insertions, 6 deletions

diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 370c8be..d76f498 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -366,10 +366,10 @@ if (NOT $ENV{CGALDIR} STREQUAL "")
 elseif (NOT $ENV{OPENSCAD_LIBRARIES} STREQUAL "")
   if (EXISTS "$ENV{OPENSCAD_LIBRARIES}/lib/CGAL")
     set(CGAL_DIR "$ENV{OPENSCAD_LIBRARIES}/lib/CGAL")
-    set(CMAKE_MODULE_PATH "${CGAL_DIR}")
+    set(CMAKE_MODULE_PATH "${CGAL_DIR}" ${CMAKE_MODULE_PATH})
   elseif (EXISTS "$ENV{OPENSCAD_LIBRARIES}/include/CGAL")
     set(CGAL_DIR "$ENV{OPENSCAD_LIBRARIES}")
-    set(CMAKE_MODULE_PATH "${CGAL_DIR}")
+    set(CMAKE_MODULE_PATH "${CGAL_DIR}" ${CMAKE_MODULE_PATH})
   endif()
 endif()
 message(STATUS "CGAL_DIR: " ${CGAL_DIR})
@@ -383,12 +383,40 @@ if("${CGAL_MAJOR_VERSION}.${CGAL_MINOR_VERSION}" VERSION_LESS 3.6)
   message(FATAL_ERROR "CGAL >= 3.6 required")
 endif()
 inclusion(CGAL_DIR CGAL_INCLUDE_DIRS)
+#Remove bad BOOST libraries from CGAL 3rd party dependencies when they don't exist (such as on 64-bit Ubuntu 13.10).
+#Libs of concern are /usr/lib/libboost_thread.so;/usr/lib/libboost_system.so;
+#Confirmed bug in CGAL @ https://bugs.launchpad.net/ubuntu/+source/cgal/+bug/1242111
+string(FIND "${CGAL_3RD_PARTY_LIBRARIES}" "/usr/lib/libboost_system.so" FIND_POSITION  )
+if(NOT "-1" STREQUAL ${FIND_POSITION} )
+  if(NOT EXISTS "/usr/lib/libboost_system.so")
+    MESSAGE( STATUS "CGAL_3RD_PARTY_LIBRARIES:Removing non-existent /usr/lib/libboost_system.so" )
+    string(REPLACE "/usr/lib/libboost_system.so" "" CGAL_3RD_PARTY_LIBRARIES ${CGAL_3RD_PARTY_LIBRARIES})
+  endif()
+endif() 
+string(FIND "${CGAL_3RD_PARTY_LIBRARIES}" "/usr/lib/libboost_thread.so" FIND_POSITION  )
+if(NOT "-1" STREQUAL ${FIND_POSITION} )
+  if(NOT EXISTS "/usr/lib/libboost_thread.so")
+    MESSAGE( STATUS "CGAL_3RD_PARTY_LIBRARIES:Removing non-existent /usr/lib/libboost_thread.so" )
+    string(REPLACE "/usr/lib/libboost_thread.so" "" CGAL_3RD_PARTY_LIBRARIES ${CGAL_3RD_PARTY_LIBRARIES})
+  endif()
+endif() 
 
 if(${CMAKE_CXX_COMPILER} MATCHES ".*clang.*" AND NOT ${CGAL_CXX_FLAGS_INIT} STREQUAL "" )
 	string(REPLACE "-frounding-math" "" CGAL_CXX_FLAGS_INIT ${CGAL_CXX_FLAGS_INIT})
 	string(REPLACE "--param=ssp-buffer-size=4" "" CGAL_CXX_FLAGS_INIT ${CGAL_CXX_FLAGS_INIT})
 endif()
 
+if (NOT $ENV{OPENSCAD_LIBRARIES} STREQUAL "")
+  # Force pkg-config to look _only_ in the local library folder
+  # in case OPENSCAD_LIBRARIES is set.
+  set(ENV{PKG_CONFIG_PATH} "$ENV{OPENSCAD_LIBRARIES}/lib/pkgconfig")
+  set(ENV{PKG_CONFIG_LIBDIR} "$ENV{OPENSCAD_LIBRARIES}/lib/pkgconfig")
+endif()
+
+find_package(GLIB2 2.2.0 REQUIRED)
+add_definitions(${GLIB2_DEFINITIONS})
+inclusion(GLIB2_DIR GLIB2_INCLUDE_DIRS)
+
 # Imagemagick
 
 if (SKIP_IMAGEMAGICK)
@@ -560,8 +588,8 @@ set(OFFSCREEN_SOURCES
   ../src/OpenCSGRenderer.cc)
 
 add_library(tests-core STATIC ${CORE_SOURCES})
-target_link_libraries(tests-core ${OPENGL_LIBRARIES})
-set(TESTS-CORE-LIBRARIES ${OPENGL_LIBRARIES} ${Boost_LIBRARIES})
+target_link_libraries(tests-core ${OPENGL_LIBRARIES} ${GLIB2_LIBRARIES} )
+set(TESTS-CORE-LIBRARIES ${OPENGL_LIBRARIES} ${GLIB2_LIBRARIES} ${Boost_LIBRARIES} )
 
 add_library(tests-common STATIC ${COMMON_SOURCES})
 target_link_libraries(tests-common tests-core)
@@ -581,7 +609,7 @@ set(TESTS-NOCGAL-LIBRARIES ${TESTS-CORE-LIBRARIES})
 # modulecachetest
 #
 add_executable(modulecachetest modulecachetest.cc)
-target_link_libraries(modulecachetest tests-nocgal ${TESTS-NOCGAL-LIBRARIES} ${Boost_LIBRARIES})
+target_link_libraries(modulecachetest tests-nocgal ${TESTS-NOCGAL-LIBRARIES})
 
 #
 # csgtexttest
@@ -601,7 +629,7 @@ target_link_libraries(cgalcachetest tests-cgal ${TESTS-CGAL-LIBRARIES} ${GLEW_LI
 #
 add_executable(openscad_nogui ../src/openscad.cc)
 set_target_properties(openscad_nogui PROPERTIES COMPILE_FLAGS "-fno-strict-aliasing -DEIGEN_DONT_ALIGN -DENABLE_CGAL -DENABLE_OPENCSG ${CGAL_CXX_FLAGS_INIT}")
-target_link_libraries(openscad_nogui tests-offscreen tests-cgal tests-nocgal ${TESTS-CORE-LIBRARIES} ${TESTS-CGAL-LIBRARIES} ${GLEW_LIBRARY} ${Boost_LIBRARIES} ${OPENCSG_LIBRARY} ${COCOA_LIBRARY} )
+target_link_libraries(openscad_nogui tests-offscreen tests-cgal tests-nocgal ${TESTS-CORE-LIBRARIES} ${TESTS-CGAL-LIBRARIES} ${GLEW_LIBRARY} ${OPENCSG_LIBRARY} ${COCOA_LIBRARY} )
 
 #
 # GUI binary tests
@@ -781,8 +809,10 @@ list(APPEND ECHO_FILES ${FUNCTION_FILES}
             ${CMAKE_SOURCE_DIR}/../testdata/scad/misc/dim-all.scad
             ${CMAKE_SOURCE_DIR}/../testdata/scad/misc/string-test.scad
             ${CMAKE_SOURCE_DIR}/../testdata/scad/misc/string-indexing.scad
+            ${CMAKE_SOURCE_DIR}/../testdata/scad/misc/string-unicode.scad
             ${CMAKE_SOURCE_DIR}/../testdata/scad/misc/vector-values.scad
             ${CMAKE_SOURCE_DIR}/../testdata/scad/misc/search-tests.scad
+            ${CMAKE_SOURCE_DIR}/../testdata/scad/misc/search-tests-unicode.scad
             ${CMAKE_SOURCE_DIR}/../testdata/scad/misc/recursion-tests.scad
             ${CMAKE_SOURCE_DIR}/../testdata/scad/misc/value-reassignment-tests.scad
             ${CMAKE_SOURCE_DIR}/../testdata/scad/misc/value-reassignment-tests2.scad
diff --git a/tests/FindGLIB2.cmake b/tests/FindGLIB2.cmake
new file mode 100644
index 0000000..9164c39
--- /dev/null
+++ b/tests/FindGLIB2.cmake
@@ -0,0 +1,28 @@
+find_package(PkgConfig REQUIRED)
+
+pkg_search_module(GLIB2 REQUIRED glib-2.0)
+#message("GLIB2_LIBRARIES ${GLIB2_LIBRARIES}")
+message("GLIB2_LIBRARY_DIRS ${GLIB2_LIBRARY_DIRS}")
+#message("GLIB2_LDFLAGS ${GLIB2_LDFLAGS}")
+#message("GLIB2_LDFLAGS_OTHER ${GLIB2_LDFLAGS_OTHER}")
+message("GLIB2_INCLUDE_DIRS ${GLIB2_INCLUDE_DIRS}")
+#message("GLIB2_CFLAGS ${GLIB2_CFLAGS}")
+#message("GLIB2_CFLAGS_OTHER ${GLIB2_CFLAGS_OTHER}")
+message("GLIB2_LIBDIR ${GLIB2_LIBDIR}")
+
+set(GLIB2_DEFINITIONS ${GLIB2_CFLAGS_OTHER})
+#message("GLIB2_DEFINITIONS ${GLIB2_DEFINITIONS}")
+
+set(GLIB2_LIBRARY_NAMES ${GLIB2_LIBRARIES})
+set(GLIB2_LIBRARIES "")
+foreach(GLIB2_LIB ${GLIB2_LIBRARY_NAMES})
+#  message("lib: ${GLIB2_LIB}")
+  set(TMP TMP-NOTFOUND)
+  find_library(TMP NAMES ${GLIB2_LIB}
+               PATHS ${GLIB2_LIBRARY_DIRS}
+               PATHS ${GLIB2_LIBDIR}
+               NO_DEFAULT_PATH)
+#  message("TMP: ${TMP}")
+  list(APPEND GLIB2_LIBRARIES "${TMP}")
+endforeach()
+message("GLIB2_LIBRARIES: ${GLIB2_LIBRARIES}")
diff --git a/tests/regression/echotest/search-tests-unicode-expected.echo b/tests/regression/echotest/search-tests-unicode-expected.echo
new file mode 100644
index 0000000..801bc8c
--- /dev/null
+++ b/tests/regression/echotest/search-tests-unicode-expected.echo
@@ -0,0 +1,109 @@
+ECHO: "----- Lookup of 1 byte into 1 byte"
+ECHO: "Expect [0] for search(a, aaaa)=[0]. OK"
+ECHO: "Expect [0] for search(a, aaaa, 1)=[0]. OK"
+ECHO: "Expect [0, 0] for search(aa, aaaa)=[0, 0]. OK"
+ECHO: "Expect [0, 0] for search(aa, aaaa, 1)=[0, 0]. OK"
+ECHO: "Expect [[0, 1, 2, 3]] for search(a, aaaa, 0)=[[0, 1, 2, 3]]. OK"
+ECHO: "Expect [[0, 1]] for search(a, aaaa, 2)=[[0, 1]]. OK"
+ECHO: "Expect [[0, 1, 2]] for search(a, aaaa, 3)=[[0, 1, 2]]. OK"
+ECHO: "Expect [[0, 1, 2, 3]] for search(a, aaaa, 4)=[[0, 1, 2, 3]]. OK"
+ECHO: "Expect [[0, 1, 2, 3], [0, 1, 2, 3]] for search(aa, aaaa, 0)=[[0, 1, 2, 3], [0, 1, 2, 3]]. OK"
+  WARNING: search term not found: "b"
+ECHO: "Expect [] for search(b, aaaa)=[]. OK"
+  WARNING: search term not found: "b"
+ECHO: "Expect [] for search(b, aaaa, 1)=[]. OK"
+  WARNING: search term not found: "b"
+ECHO: "Expect [[]] for search(b, aaaa, 0)=[[]]. OK"
+  WARNING: search term not found: "b"
+ECHO: "Expect [[]] for search(b, aaaa, 2)=[[]]. OK"
+  WARNING: search term not found: "b"
+  WARNING: search term not found: "b"
+ECHO: "Expect [] for search(bb, aaaa)=[]. OK"
+  WARNING: search term not found: "b"
+  WARNING: search term not found: "b"
+ECHO: "Expect [] for search(bb, aaaa, 1)=[]. OK"
+  WARNING: search term not found: "b"
+  WARNING: search term not found: "b"
+ECHO: "Expect [[], []] for search(bb, aaaa, 0)=[[], []]. OK"
+  WARNING: search term not found: "b"
+  WARNING: search term not found: "b"
+ECHO: "Expect [[], []] for search(bb, aaaa, 2)=[[], []]. OK"
+ECHO: "Expect [] for search(, aaaa)=[]. OK"
+ECHO: "Expect [] for search(, )=[]. OK"
+  WARNING: search term not found: "a"
+ECHO: "Expect [] for search(a, )=[]. OK"
+ECHO: "----- Lookup of multi-byte into 1 byte"
+  WARNING: search term not found: "Л"
+ECHO: "Expect [] for search(Л, aaaa)=[]. OK"
+  WARNING: search term not found: "🂡"
+ECHO: "Expect [] for search(🂡, aaaa)=[]. OK"
+  WARNING: search term not found: "Л"
+ECHO: "Expect [[]] for search(Л, aaaa, 0)=[[]]. OK"
+  WARNING: search term not found: "🂡"
+ECHO: "Expect [[]] for search(🂡, aaaa, 0)=[[]]. OK"
+  WARNING: search term not found: "Л"
+  WARNING: search term not found: "Л"
+ECHO: "Expect [] for search(ЛЛ, aaaa)=[]. OK"
+  WARNING: search term not found: "🂡"
+  WARNING: search term not found: "🂡"
+ECHO: "Expect [] for search(🂡🂡, aaaa)=[]. OK"
+  WARNING: search term not found: "Л"
+  WARNING: search term not found: "Л"
+ECHO: "Expect [[], []] for search(ЛЛ, aaaa, 0)=[[], []]. OK"
+  WARNING: search term not found: "🂡"
+  WARNING: search term not found: "🂡"
+ECHO: "Expect [[], []] for search(🂡🂡, aaaa, 0)=[[], []]. OK"
+ECHO: "----- Lookup of 1-byte into multi-byte"
+  WARNING: search term not found: "a"
+ECHO: "Expect [] for search(a, ЛЛЛЛ)=[]. OK"
+  WARNING: search term not found: "a"
+ECHO: "Expect [] for search(a, 🂡🂡🂡🂡)=[]. OK"
+  WARNING: search term not found: "a"
+ECHO: "Expect [] for search(a, ЛЛЛЛ, 1)=[]. OK"
+  WARNING: search term not found: "a"
+ECHO: "Expect [[]] for search(a, 🂡🂡🂡🂡, 0)=[[]]. OK"
+  WARNING: search term not found: "a"
+ECHO: "Expect [[]] for search(a, 🂡🂡🂡🂡, 2)=[[]]. OK"
+ECHO: "----- Lookup of 1-byte into mixed multi-byte"
+ECHO: "Expect [0] for search(a, aЛaЛaЛaЛa)=[0]. OK"
+ECHO: "Expect [0] for search(a, a🂡a🂡a🂡a🂡a)=[0]. OK"
+ECHO: "Expect [0] for search(a, a🂡Л🂡a🂡Л🂡a)=[0]. OK"
+ECHO: "Expect [[0, 2, 4, 6, 8]] for search(a, aЛaЛaЛaЛa, 0)=[[0, 2, 4, 6, 8]]. OK"
+ECHO: "Expect [[0, 2, 4, 6, 8]] for search(a, a🂡a🂡a🂡a🂡a, 0)=[[0, 2, 4, 6, 8]]. OK"
+ECHO: "Expect [[0, 4, 8]] for search(a, a🂡Л🂡a🂡Л🂡a, 0)=[[0, 4, 8]]. OK"
+ECHO: "----- Lookup of 2-byte into 2-byte"
+ECHO: "Expect [0] for search(Л, ЛЛЛЛ)=[0]. OK"
+ECHO: "Expect [[0, 1, 2, 3]] for search(Л, ЛЛЛЛ, 0)=[[0, 1, 2, 3]]. OK"
+ECHO: "----- Lookup of 2-byte into 4-byte"
+  WARNING: search term not found: "Л"
+ECHO: "Expect [] for search(Л, 🂡🂡🂡🂡)=[]. OK"
+ECHO: "----- Lookup of 4-byte into 4-byte"
+ECHO: "Expect [0] for search(🂡, 🂡🂡🂡🂡)=[0]. OK"
+ECHO: "Expect [[0, 1, 2, 3]] for search(🂡, 🂡🂡🂡🂡, 0)=[[0, 1, 2, 3]]. OK"
+ECHO: "----- Lookup of 4-byte into 2-byte"
+  WARNING: search term not found: "🂡"
+ECHO: "Expect [] for search(🂡, ЛЛЛЛ)=[]. OK"
+ECHO: "----- Lookup of 2-byte into mixed multi-byte"
+ECHO: "Expect [1] for search(Л, aЛaЛaЛaЛa, 1)=[1]. OK"
+  WARNING: search term not found: "Л"
+ECHO: "Expect [] for search(Л, a🂡a🂡a🂡a🂡a, 1)=[]. OK"
+ECHO: "Expect [2] for search(Л, a🂡Л🂡a🂡Л🂡a, 1)=[2]. OK"
+ECHO: "Expect [[1, 3, 5, 7]] for search(Л, aЛaЛaЛaЛa, 0)=[[1, 3, 5, 7]]. OK"
+  WARNING: search term not found: "Л"
+ECHO: "Expect [[]] for search(Л, a🂡a🂡a🂡a🂡a, 0)=[[]]. OK"
+ECHO: "Expect [[2, 6]] for search(Л, a🂡Л🂡a🂡Л🂡a, 0)=[[2, 6]]. OK"
+ECHO: "----- Lookup of 4-byte into mixed multi-byte"
+  WARNING: search term not found: "🂡"
+ECHO: "Expect [] for search(🂡, aЛaЛaЛaЛa, 1)=[]. OK"
+ECHO: "Expect [1] for search(🂡, a🂡a🂡a🂡a🂡a, 1)=[1]. OK"
+  WARNING: search term not found: "🂡"
+ECHO: "Expect [[]] for search(🂡, aЛaЛaЛaЛa, 0)=[[]]. OK"
+ECHO: "Expect [[1, 3, 5, 7]] for search(🂡, a🂡a🂡a🂡a🂡a, 0)=[[1, 3, 5, 7]]. OK"
+ECHO: "Expect [[1, 3, 5, 7]] for search(🂡, a🂡Л🂡a🂡Л🂡a, 0)=[[1, 3, 5, 7]]. OK"
+ECHO: "----- Lookup of mixed multi-byte into mixed multi-byte"
+  WARNING: search term not found: "🂡"
+ECHO: "Expect [[0, 2, 4, 6, 8], [1, 3, 5, 7], []] for search(aЛ🂡, aЛaЛaЛaЛa, 0)=[[0, 2, 4, 6, 8], [1, 3, 5, 7], []]. OK"
+  WARNING: search term not found: "Л"
+ECHO: "Expect [[0, 2, 4, 6, 8], [], [1, 3, 5, 7]] for search(aЛ🂡, a🂡a🂡a🂡a🂡a, 0)=[[0, 2, 4, 6, 8], [], [1, 3, 5, 7]]. OK"
+ECHO: "Expect [[0, 4, 8], [2, 6], [1, 3, 5, 7]] for search(aЛ🂡, a🂡Л🂡a🂡Л🂡a, 0)=[[0, 4, 8], [2, 6], [1, 3, 5, 7]]. OK"
+ECHO: "Expect [[1, 3, 5, 7], [0, 4, 8], [2, 6]] for search(🂡aЛ, a🂡Л🂡a🂡Л🂡a, 0)=[[1, 3, 5, 7], [0, 4, 8], [2, 6]]. OK"
diff --git a/tests/regression/echotest/string-unicode-expected.echo b/tests/regression/echotest/string-unicode-expected.echo
new file mode 100644
index 0000000..a1cd3be
--- /dev/null
+++ b/tests/regression/echotest/string-unicode-expected.echo
@@ -0,0 +1,107 @@
+ECHO: "text_1bytes_len = ", "1234", " len = ", 4
+ECHO: "text_2bytes_len = ", "ЛЛЛЛ", " len = ", 4
+ECHO: "text_4bytes_len = ", "🂡🂱🃁🃑", " len = ", 4
+ECHO: "[", 0, "] = ", "DEADBEEF", " of len=", 8, ":"
+ECHO: "    [", 0, "]=", "D"
+ECHO: "    [", 1, "]=", "E"
+ECHO: "    [", 2, "]=", "A"
+ECHO: "    [", 3, "]=", "D"
+ECHO: "    [", 4, "]=", "B"
+ECHO: "    [", 5, "]=", "E"
+ECHO: "    [", 6, "]=", "E"
+ECHO: "    [", 7, "]=", "F"
+ECHO: "[", 1, "] = ", "Ленивый рыжий кот", " of len=", 17, ":"
+ECHO: "    [", 0, "]=", "Л"
+ECHO: "    [", 1, "]=", "е"
+ECHO: "    [", 2, "]=", "н"
+ECHO: "    [", 3, "]=", "и"
+ECHO: "    [", 4, "]=", "в"
+ECHO: "    [", 5, "]=", "ы"
+ECHO: "    [", 6, "]=", "й"
+ECHO: "    [", 7, "]=", " "
+ECHO: "    [", 8, "]=", "р"
+ECHO: "    [", 9, "]=", "ы"
+ECHO: "    [", 10, "]=", "ж"
+ECHO: "    [", 11, "]=", "и"
+ECHO: "    [", 12, "]=", "й"
+ECHO: "    [", 13, "]=", " "
+ECHO: "    [", 14, "]=", "к"
+ECHO: "    [", 15, "]=", "о"
+ECHO: "    [", 16, "]=", "т"
+ECHO: "[", 2, "] = ", "كسول الزنجبيل القط", " of len=", 18, ":"
+ECHO: "    [", 0, "]=", "ك"
+ECHO: "    [", 1, "]=", "س"
+ECHO: "    [", 2, "]=", "و"
+ECHO: "    [", 3, "]=", "ل"
+ECHO: "    [", 4, "]=", " "
+ECHO: "    [", 5, "]=", "ا"
+ECHO: "    [", 6, "]=", "ل"
+ECHO: "    [", 7, "]=", "ز"
+ECHO: "    [", 8, "]=", "ن"
+ECHO: "    [", 9, "]=", "ج"
+ECHO: "    [", 10, "]=", "ب"
+ECHO: "    [", 11, "]=", "ي"
+ECHO: "    [", 12, "]=", "ل"
+ECHO: "    [", 13, "]=", " "
+ECHO: "    [", 14, "]=", "ا"
+ECHO: "    [", 15, "]=", "ل"
+ECHO: "    [", 16, "]=", "ق"
+ECHO: "    [", 17, "]=", "ط"
+ECHO: "[", 3, "] = ", "懶惰的姜貓", " of len=", 5, ":"
+ECHO: "    [", 0, "]=", "懶"
+ECHO: "    [", 1, "]=", "惰"
+ECHO: "    [", 2, "]=", "的"
+ECHO: "    [", 3, "]=", "姜"
+ECHO: "    [", 4, "]=", "貓"
+ECHO: "[", 4, "] = ", "äöü ÄÖÜ ß", " of len=", 9, ":"
+ECHO: "    [", 0, "]=", "ä"
+ECHO: "    [", 1, "]=", "ö"
+ECHO: "    [", 2, "]=", "ü"
+ECHO: "    [", 3, "]=", " "
+ECHO: "    [", 4, "]=", "Ä"
+ECHO: "    [", 5, "]=", "Ö"
+ECHO: "    [", 6, "]=", "Ü"
+ECHO: "    [", 7, "]=", " "
+ECHO: "    [", 8, "]=", "ß"
+ECHO: "[", 5, "] = ", "😁😂😃😄😅😆😇😈😉😊😋😌😍😎😏😐", " of len=", 16, ":"
+ECHO: "    [", 0, "]=", "😁"
+ECHO: "    [", 1, "]=", "😂"
+ECHO: "    [", 2, "]=", "😃"
+ECHO: "    [", 3, "]=", "😄"
+ECHO: "    [", 4, "]=", "😅"
+ECHO: "    [", 5, "]=", "😆"
+ECHO: "    [", 6, "]=", "😇"
+ECHO: "    [", 7, "]=", "😈"
+ECHO: "    [", 8, "]=", "😉"
+ECHO: "    [", 9, "]=", "😊"
+ECHO: "    [", 10, "]=", "😋"
+ECHO: "    [", 11, "]=", "😌"
+ECHO: "    [", 12, "]=", "😍"
+ECHO: "    [", 13, "]=", "😎"
+ECHO: "    [", 14, "]=", "😏"
+ECHO: "    [", 15, "]=", "😐"
+ECHO: "[", 6, "] = ", "⠁⠂⠃⠄⠅⠆⠇⠈⠉⠊⠋⠌⠍⠎⠏", " of len=", 15, ":"
+ECHO: "    [", 0, "]=", "⠁"
+ECHO: "    [", 1, "]=", "⠂"
+ECHO: "    [", 2, "]=", "⠃"
+ECHO: "    [", 3, "]=", "⠄"
+ECHO: "    [", 4, "]=", "⠅"
+ECHO: "    [", 5, "]=", "⠆"
+ECHO: "    [", 6, "]=", "⠇"
+ECHO: "    [", 7, "]=", "⠈"
+ECHO: "    [", 8, "]=", "⠉"
+ECHO: "    [", 9, "]=", "⠊"
+ECHO: "    [", 10, "]=", "⠋"
+ECHO: "    [", 11, "]=", "⠌"
+ECHO: "    [", 12, "]=", "⠍"
+ECHO: "    [", 13, "]=", "⠎"
+ECHO: "    [", 14, "]=", "⠏"
+ECHO: "[", 7, "] = ", "🂡🂱🃁🃑", " of len=", 4, ":"
+ECHO: "    [", 0, "]=", "🂡"
+ECHO: "    [", 1, "]=", "🂱"
+ECHO: "    [", 2, "]=", "🃁"
+ECHO: "    [", 3, "]=", "🃑"
+ECHO: "Past end of unicode only 2-byte ", undef
+ECHO: "Past end of unicode only 4-byte ", undef
+ECHO: "Past end of both 2-byte ", undef
+ECHO: "Past end of both 4-byte ", undef