and FreeBSD compatibility. Add support for XSI syntax
(POSIX 1003.1-2004). Rename -s[N] to -S N. Remove documentation
for -h. -i is now -t dI (not d2) and -l is now -t dL (not d4).
(COMMON_SHORT_OPTIONS): Add -B, -D, -e, -F, -H, -I, -L, -O, -s, -X.
(long_options, main): --strings is now -S, not -s.
(usage): Reflect the usage changes.
(parse_old_offset): Do not issue a diagnostic on failure;
callers now do this as necessary.
(main): Support POSIX syntax. Remove unused case 0 from getopt_long.
Add support for new short options (many undocumented) for
compatibility with FreeBSD. Remove FIXME for -s; it's now
POSIX-compatible. Default format is now oS, not o2.
(bit_count): Remove. All uses changed to....
(multiple_bits_set): New function.
(scanargs): Use it, and check separately for each set of
incompatible options, to improve diagnostics.
(MX): Remove.
(apply_translations): Move checks for incompatible options
to scanargs, so that they're done consistently.
(write_error, xputchar): New functions.
(paste_parallel): Use correct errno value after input error.
(paste_parallel, paste_serial): Report errno value after output error.
(parse_tab_stop): Renamed from parse_tabstop. All uses changed.
(validate_tab_stop): Renamed from validate_tabstop. All uses changed.
(next_file, main): Check fclose against 0, not EOF.
(unexpand): Remove unnecessary casts.
Add another loop nesting level, for lines, so that per-line variables
are initialized cleanly.
Revamp tab checking. Check for write error immediately, rather
than just once at the end of the program.
(TAB_STOP_SENTINEL): Remove.
(tab_size): Now size_t, not uintmax_t, since we need to store
the sequences of blanks.
(max_column_width): New var.
(usage): Say "blank" where POSIX requires this.
(add_tab_stop): Calculate maximum column width.
(unexpand): Store the pending blanks, instead of merely counting them.
Follow POSIX's rules about -a requiring two blanks before a tab stop.
Get rid of internal label and goto.
(usage): -i does not convert tabs after non-tabs.
(add_tab_stop): Renamed from add_tabstop. All uses changed.
(parse_tab_stop): Renamed from parse_tabstop. All uses changed.
(validate_tab_stop): Renamed from validate_tabstop. All uses changed.
(next_file, main): Check fclose against 0, not EOF.
(expand): Remove unnecessary casts.
Add another loop nesting level, for lines, so that per-line variables
are initialized cleanly.
Revamp tab checking. Check for write error immediately, rather
than just once at the end of the program.
rather than "tabstop".
(unexpand invocation): Use "blank" rather than "space" when
POSIX requires "blank". Define "blank". Initial blanks are
converted even if there's just one. For -a, convert two or
more blanks only if they occur just before a tab stop.
group must always be preceded by separator.
"chown : file" and "chown '' file" don't change the owner or group.
Update the explanation of what happens to the set-user-ID or
set-group-ID bits, e.g., they sometimes are not cleared if they
denote mandatory locking. Change "find"-oriented examples to use
chown -h.
strings on unbounded length. alloca's performance benefits aren't
that important here.
(V_STRDUP): Remove.
(parse_with_separator): New function, with most of the internals
of the old parse_user_spec. Allow user to omit both user and group,
for compatibility with FreeBSD.
Clone only the user name, not the entire spec.
Do not set *uid, *gid unless entirely successful.
Avoid memory leak in some failing cases.
Fix regression for USER.GROUP reported by Dmitry V. Levin in
<http://lists.gnu.org/archive/html/bug-coreutils/2004-08/msg00102.html>
(parse_user_spec): Rewrite to use parse_with_separator.
Paul Eggert