# Same semantics as [v]spprintf, only it prints unicode strings instead of
# native strings. Atm it has a little problem since it length doesn't take
# the difference between UTF-16 code points vs units into account. But as
# long as no 4 byte codes are involved it should already run everything.
# Still missing formats (%a, %A)
# Still missing modifier (l) in (%lc, %ls)
# Still missing modifier (L) in (%La, %LA, %Le, %LE, %Lf, %LF, %Lg, %LG)
# C99 requires any conversion to be able to produce at least 4095
# characters. Implementation only allows less then 512.
#
# Only inside ext/mbstring etc. we could use %lc and %ls. And none of the
# rest should affect us until we stay with double and avoid long double.
- Add 'z' prefix.
# Now you can use '%zd' in [v]spprintf() and everything that utilizes it
# like error messages BUT you still cannot rely on it in [v]s[n]printf()
# calls.
- introduces an overflow detection in STR_TO_DEC
- eliminates dead code (e.g. assert(foo); if (foo) {..})
- removes unused macros from the original code
- simplifies code (e.g. cc was completely dropped)
- improves run-time performance
The max_len feature is never used in our code base.
Nevertheless, cpu cycles were spent on each string
operation to check the current length against max_len which
is quite inefficient. Thus, I've moved the check to
vspprintf where it is applied only once per call.
