[avr-libc-dev] scanf: What about to consider the NUL as end of string?

[Dmitry K.]

Hi.

The question is about the NUL character ('\0') with
string conversions ('%s', '%[^').  Now the Avr-libc's
scanf() considers the NUL as a normal character: it is
placed into output buffer and a conversion continues.

The GNU's libc does the same.

Is it a good behavior?  What about to stop conversion after
the NUL is readed?

Any links?

For '%[' (without '^') conversion it is not a problem,
as '\0' is in block-list by default.

Note, in case of '%[^' conversion it is no way to place
the NUL into block-list (it would be the end of format
string).

Thanks,
Dmitry.