Remove global variable, unit_size.
(atou): Remove now-unused function.
(parse_unit): Likewise.
(string_to_ull): New function.
(head): Take new parameter, count_lines. Use it instead of unit_size.
Update callers.
(head_file): Likewise.
(main): Use string_to_ull, not atou/parse_unit.
(set_tz): New function.
(batch_convert): If necessary, save the initial value of TZ and
for each date in the file, restore it before each call to get_date,
then set it to UTC0 before each show_date call.
(main): Don't set TZ before calling get_date.
Set TZ after get_date call and before show_date call.
Reported by Matthew Braun.
(copy_reg): Use apply_attributes instead of open-coding the pieces.
Now, failure to preserve file attributes does not cause mv to change
its exit status, and such failures elicit warning diagnostics. This
behavior is required by POSIX. Before, failure to preserve ownership
due to insufficient access was diagnosed only for root.
Prompted by a report from Bengt Martensson.
(do_move): Update caller.
(movefile): Take new boolean parameter, DEST_IS_DIR,
to save a stat per moved file when the destination is a directory.
(main): Call movefile with additional argument.
(strip_trailing_slashes_2): New function.
(movefile): Remove trailing slashes from dest. Otherwise, stat ("b/")
fails with ENOTDIR on systems including Linux w/libc 2.0.30.
Reproduce with `rm -rf a b; mkdir a; touch b; ./mv a b/'.
(do_move): Fix misleading comment.
(init_col_info): New function.
(print_current_files): Call init_col_info if format is
`many_per_line' or `horizontal'.
(print_many_per_line): Calculate optimum column widths.
(print_horizontal): Likewise.
From Ulrich Drepper.
searching for `\(' to determine whether to return 0 or the empty
string. Before it would improperly return '' if the pattern
contained a substring like this: `\\('. From Karl Heuer.
For example, running expr c : '\\(' should print `0'.
(enum Output_units): Rename from output_size.
Rename size_* to Unit_*.
Add Unit_variable to correspond to --human-readable.
(convert_blocks): Remove now-unused definition.
(human_readable): Rename paramater n_bytes to n_blocks.
Adjust conversions to reflect fact that input is now number of
512-byte blocks, not bytes.
(print_size): New function.
(du_files): Use print_size instead of open coding it.
(count_entry): Always count in units of 512-byte blocks to delay.
This lets du accumulate totals corresponding to a terabyte before
overflowing 32-bit long int.
Use print_size instead of open coding it.
(du_files): Pass output_size unchanged to convert_blocks. No need
to test output_size for size_bytes, convert_blocks handles that
correctly.
(count_entry): Likewise.
Jim Meyering