Before removing bit fields:
$ size find
text data bss dec hex filename
16751 968 48 17767 4567 find
After removing bit fields:
$ size find
text data bss dec hex filename
16527 968 68 17563 449b find
This is an example where bit fields uses more memory
than integers or char. There is going to be only one
gflags struct, so the waste in instructions is bigger
than the space saved by bit fields. In the case of Permarg,
Sizearg, Execarg there is only one bit field, so at least
one unsigned is used, so there is no any gain.
We don't actually need it for Zulu-time and handroll it.
We can add the gmt-offset to hour without range-checking, because
the implementation will take care of it in mktime().
First attempt to see if COLUMNS is set, if that fails an ioctl()
is issued to find the width of the output device. If that fails
as well, we default to 65 chars per line.
Well, isspacerune() has been fixed and some other FIXME's were also easy
to do.
There are some places where maybe some util-functions could be helpful.
In some cases, like for instance in regard to escape-sequences, I'm all
for consistency rather than adhering to the POSIX-standard too much.
Relying on centralized util-functions also makes it possible to keep
this consistency across the board.
Previously, the string-length was limited to BUFSIZ, which is an
obvious deficiency.
Now the buffer only needs to be as long as the user specifies the
minimal string length.
I added UTF-8-support, because that's how POSIX wants it and there
are cases where you need this. It doesn't add ELF-barf compared to
the previous implementation.
The t-flag is also pretty important for POSIX-compliance, so I added
it.
The only trouble previously was the a-flag, but given that POSIX
leaves undefined what the a-flag actually does, we set it as default
and don't care about parsing ELF-headers, which has already
turned out to be a security issue in GNU coreutils[0].
[0]: http://lcamtuf.blogspot.ro/2014/10/psa-dont-run-strings-on-untrusted-files.html
