$ gcc testregstr.c -o testregstr -w && ./testregstr
----------------------------------------------------------------------->called init_aux() at line 348 from ../builtins/libstring.h
----------------------------------------------------------------------->called init_env() at line 327 from ../builtins/libstring.h
----------------------------------------------------------------------->called init_argX() at line 336 from ../builtins/libstring.h
test.string = 
(test).type = 1
STR_TYPE_EMPTY
test.string = Hello World
(test).type = 2096
STR_TYPE_ASCII
STR_TYPE_UNICODE
STR_TYPE_PRINTABLE
test.string = Hello World!
(test).type = 2096
STR_TYPE_ASCII
STR_TYPE_UNICODE
STR_TYPE_PRINTABLE
test.string = Hello World!123456
(test).type = 2096
STR_TYPE_ASCII
STR_TYPE_UNICODE
STR_TYPE_PRINTABLE
test.string = Hello World!123456'qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM foo5'
(test).type = 2096
STR_TYPE_ASCII
STR_TYPE_UNICODE
STR_TYPE_PRINTABLE
bin.string = 
(bin).type = 1
STR_TYPE_EMPTY
bin.string = 0
(bin).type = 14458
STR_TYPE_BINARY
STR_TYPE_ALPHANUMERIC
STR_TYPE_ASCII
STR_TYPE_UNICODE
STR_TYPE_HEXADECIMAL
STR_TYPE_PRINTABLE
STR_TYPE_GRAPH
STR_TYPE_DIGIT
bin.string = 02
(bin).type = 14456
STR_TYPE_ALPHANUMERIC
STR_TYPE_ASCII
STR_TYPE_UNICODE
STR_TYPE_HEXADECIMAL
STR_TYPE_PRINTABLE
STR_TYPE_GRAPH
STR_TYPE_DIGIT
undoing
bin.string = 0
(bin).type = 14458
STR_TYPE_BINARY
STR_TYPE_ALPHANUMERIC
STR_TYPE_ASCII
STR_TYPE_UNICODE
STR_TYPE_HEXADECIMAL
STR_TYPE_PRINTABLE
STR_TYPE_GRAPH
STR_TYPE_DIGIT
undoing
bin.string = 
(bin).type = 1
STR_TYPE_EMPTY
bin2.string = 
(bin2).type = 1
STR_TYPE_EMPTY
adding 1
bin2.string = 1
(bin2).type = 14458
STR_TYPE_BINARY
STR_TYPE_ALPHANUMERIC
STR_TYPE_ASCII
STR_TYPE_UNICODE
STR_TYPE_HEXADECIMAL
STR_TYPE_PRINTABLE
STR_TYPE_GRAPH
STR_TYPE_DIGIT
adding 0
bin2.string = 10
(bin2).type = 14458
STR_TYPE_BINARY
STR_TYPE_ALPHANUMERIC
STR_TYPE_ASCII
STR_TYPE_UNICODE
STR_TYPE_HEXADECIMAL
STR_TYPE_PRINTABLE
STR_TYPE_GRAPH
STR_TYPE_DIGIT
adding x
bin2.string = 10x
(bin2).type = 6200
STR_TYPE_ALPHANUMERIC
STR_TYPE_ASCII
STR_TYPE_UNICODE
STR_TYPE_PRINTABLE
STR_TYPE_GRAPH
adding 1
bin2.string = 10x1
(bin2).type = 6200
STR_TYPE_ALPHANUMERIC
STR_TYPE_ASCII
STR_TYPE_UNICODE
STR_TYPE_PRINTABLE
STR_TYPE_GRAPH