Include <stdlib.h> and <string.h> unconditionally.
(iswcntrl, mbsinit, ISCNTRL): New macros.
(mbsnwidth): Use K&R style function declarations.
Don't bother checking for MB_LEN_MAX == 1, since the compiler
can optimize it when MB_CUR_MAX == 1.
The width of control characters is zero, not 1.
Define to nstrftime if emacs, but only if my_strftime is not defined.
(extra_args, extra_args_spec, extra_args_spec_iso): Rename from
ut_argument, ut_argument_spec, ut_argument_spec_iso, respectively.
Add one more extra argument: a nanoseconds value.
All uses changed.
(ns): New macro.
(my_strftime function): Add %N format.
(emacs_strftimeu): Renamed from emacs_strftime,
with extra ut argument.
Include <string.h> instead of <stdlib.h>.
Do not include <assert.h>; no longer needed.
Include xalloc.h.
(memrchr): Remove decl.
(dir_name_r): Remove.
(dir_len): Renamed from dirlen. All callers changed.
Rewrite in terms of base_name, for simplicity and consistency.
(dir_name): Never return NULL. All callers changed.
Do not include <stdlib.h> in test program; no longer needed.
return 0; is fine for test program.
Do not include <stdio.h>, <assert.h>; no longer needed.
Include <string.h>, <dirname.h>.
(base_name): Allow file names ending in slashes, other than names
that are all slashes. In this case, return the basename followed
by the slashes. This is more general, and can be used in places
where the original base_name purposely had an assertion failure.
(base_len): New function.
Include <dirname.h> after size_t is defined.
(find_backup_file_name, max_backup_version): Use base_len instead of
rolling it ourselves.
Handle the case of "" and (on DOS) "C:" correctly.
Include <dirname.h> after size_t is defined.
(addext): Use base_len to trim redundant
trailing slashes instead of doing it ourselves.
But do not trim the last slash if it is not redundant.
Jim Meyering