All uses changed. Remove the old SWAP.
Remove obvious comment about BLOCKSIZE.
(rol): New macro, moved here from md5.h.
(sha1_process_block): Remove an incoherent FIXME comment.
(__md5_buffer): Renamed from md5_buffer. Add a macro undoing this
if _LIBC is not defined. Add __THROW.
(__md5_finish_ctx, __md5_init_ctx, __md5_process_block):
(__md5_process_bytes, __md5_read_ctx, __md5_stream): Likewise.
(struct md5_ctx): Mark buffer as being aligned.
(rol): Remove; all uses changed to CYCLIC.
(INPUT_BLOCK_SLOP, OUTPUT_BLOCK_SLOP): New macros.
(MAX_BLOCKSIZE): Now accepts an arg. All uses changed.
(page_size): New var.
(scanargs, skip, main): Use more-straightforward way to detect overflow.
(dd_copy): Use page_size rather than invoking getpagesize.
Use INPUT_BLOCK_SLOP, OUTPUT_BLOCK_SLOP.
(main): Set page_size.
Avoid a call to stat in the usual case where ftruncate succeeds.
remove the "=1".
(TIME_SOEC_HOURS, TIME_SPEC_MINUTES): Must be at end now, so put
them there.
(time_spec_string, time_spec): Hours and minutes must be at
start now, so put them there.
(rfc_2822_format): Now a string constant, not a boolean. All uses
changed.
(iso_8601_format, rfc_format): Remove.
(RFC_3339_OPTION): New constant.
(long_options): Add --rfc-3339.
(usage): Add --rfc-3339. Don't mention --iso-8601.
Mention %:z, %::z, %:::z.
(main): Simplify calculation of 'format'; it was getting too hairy
to follow. Add --rfc-3339.
(show_date): Assume format arg is not NULL, which is the case
now. The default code is moved to 'main'. This simplifies things
and allows the default to be calculated just once.
Document date --rfc-3339 and new specifiers %:z, %::z, %:::z. Use
"date and time" consistently; the old version sometimes said "time
and date". Fix a minor bug in the documentation for --rfc-2822:
it claimed day-of-month < 10 had leading space, not leading zero.
Use a consistent format for terms like "RFC".
Jim Meyering
Paul Eggert