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file_t is now mapped to unlabeled_t as per:
http://danwalsh.livejournal.com/68189.html
Therefore use the latter to ensure we match correctly.
This is needed on >= Fedora 21 for example,
while it also works on earlier releases.
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We may run into a race condition if we treat hard links to the same file
as distinct files. If we do 'mv a b' and 'mv b a' in parallel, both a
and b can disappear from the file system. The reason is that in this
case the unlink on src is called and the system calls can end up being
run in the order where unlink(a) and unlink(b) are the last two system
calls. Therefore exit with an error code so that we avoid the potential
data loss.
* src/copy.c (same_file_ok): Don't set unlink_src that was used by mv,
and return false for two hardlinks to a file in move_mode.
*src/copy.c (copy_internal): No longer honor the unlink_src option,
used only by mv.
NEWS: Mention the change in behavior.
* tests/cp/same-file.sh: Augment to cover the `cp -a hlsl1 sl1` case.
* tests/mv/hard-verbose.sh: Remove no longer needed test.
* tests/local.mk: Remove the reference to hard-verbose.sh.
* tests/mv/hard-4.sh: Adjust so we fail in this case.
* tests/mv/i-4.sh: Likewise.
* tests/mv/symlink-onto-hardlink-to-self.sh: Likewise.
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* cfg.mk (sc_strftime_check): Adjust regex to handle
newer glibc info formatting with different indentation
and quoting.
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* tests/tail-2/F-vs-missing.sh: Comment with the correct total delay.
* tests/tail-2/F-vs-rename.shi: Likewise.
* tests/tail-2/flush-initial.sh: Likewise.
* tests/tail-2/inotify-hash-abuse.sh: Likewise.
* tests/tail-2/pipe-f2.sh: Likewise.
* tests/misc/chroot-fail.sh: Initialize can_chroot_root in all cases.
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* tests/tail-2/inotify-rotate.sh: Use retry_delay_
to employ an exponential backoff with a total delay of
up to 25.5s. The 15s delay was seen to trigger a false
failure in http://hydra.nixos.org/build/16546517
Also remove the .1s sleep in each of the 50 iterations
to reduce the running time of the test and thus the
expensive_ tag on this test was removed.
Also ensure that we use the standard exit procedure
upon failure to avoid any erroneous diagnostics due
to persistent files on NFS.
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* tests/du/move-dir-while-traversing.sh: Catch failure of retry_delay_
when waiting for the watcher to get ready.
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* src/df.c (usage): Mention that duplicate file systems are shown
with this option, not just dummy file systems.
* doc/coreutils.texi (df invocation): For the --all option, expand
on the class of normally suppressed mount entries that it includes.
Reported in http://bugs.debian.org/737399
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sc_long_lines was the slowest syntax check
before$ time make sc_long_lines
long_lines
real 0m2.740s
after $ time make sc_long_lines
long_lines
real 0m0.677s
* src/cfg.mk (sc_dd_max_sym_length): s/--max-line-length/-L/
for compat with BSDs.
(sc_long_lines): Prefilter with wc -L to only identify lines
in files that have lines longer than 80 characters.
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* tests/d_type-check: The hardcoded name doesn't hold true for all
Linux/glibc platforms, let alone Linux/non-glibc.
Use ctypes.util.find_library() instead to search for the library.
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At least the MHz number in /proc/cpuinfo may change, thus leading to
a false positive failure when comparing the expected against the
actual output file. Use an invariant file instead: /proc/version.
* tests/misc/head-c.sh: s/cpuinfo/version/
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* cp/proc-zero-len.sh: Search the 'err' file
for the error to ignore, not stdin.
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* src/chroot.c (is_root): Adjust to compare canonicalized paths
rather than inodes, to handle (return false in) the case where
we have a tree that is constructed by first bind mounting "/"
(thus having the same inode).
(main): Unconditionally call chroot() because it's safer
and of minimal performance benefit to avoid in this case.
This will cause inconsistency with some platforms
not allowing `chroot / true` for non root users.
* tests/misc/chroot-fail.sh: Adjust appropriately.
* NEWS: Mention the bug fixes.
Fixes http://bugs.gnu.org/18736
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* src/copy.c (copy_reg): If sparse_copy() failed, then an
erroneous error about failing to extend the file would be reported.
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* src.copy.c (copy_reg): Use fiemap to read sparse files, even
if the output is not to a regular file.
* NEWS: Mention the improvement.
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With --sparse=always use fallocate(...PUNCH_HOLE...) to
avoid any permanent allocation due to speculative
preallocation employed by file systems such as XFS.
* m4/jm-macros.m4: Check for <linux/falloc.h> and fallocate().
* src/copy.c (punch_hole): A new function to try and punch
a hole at the specified offset if supported.
(create_hole): Call punch_hole() after requesting a hole.
(extent_copy): Likewise.
* NEWS: Mention the improvement.
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Previously cp would not detect runs of NULs that were
smaller than the buffer size used for I/O (currently 128KiB).
* src/copy.c (copy_reg): Use an independent hole_size, set to
st_blksize, to increase the chances of detecting a representable hole,
in a run of NULs read from the input.
(create_hole): A new function refactored from sparse_copy() and
extent_copy() so we have a single place to handle holes.
(sparse_copy): Adjust to loop over the larger input buffer
in chunks of the passed hole size. Also adjust to only call
lseek once per hole, rather than at least once per input buffer.
* tests/cp/sparse.sh: Add test cases for various sparse chunk sizes.
* NEWS: Mention the improvement.
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* man/timeout.x: The 2038 that the sentence is referring to is the year
2038, not 2038 seconds (the default unit used for timeouts).
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Prompted by http://hydra.nixos.org/build/15682577
with GCC 4.8.3 on i686
src/tac.c:557:6: error: assuming signed overflow does not occur
when simplifying conditional to constant [-Werror=strict-overflow]
if (bytes_copied < 0)
This happens because copy_to_temp() is inlined in tac_nonseekable(),
thus reducing the comparison to the bytes_copied variable in
copy_to_temp. Now this can't overflow on either 32 or 64 bit
due to the protection of the preceding fwrite(). We could use a
guard like "if (bytes_copied <= OFF_T_MAX - bytes_read)" to avoid
the warning, but rather than a runtime branch, just use an unsigned
type to avoid apparent signed overflow on systems where the accumulation
is not promoted to unsigned (32 bit size_t, 64 bit off_t).
* src/tac.c (copy_to_temp): Increment an unsigned type to
avoid the subsequent signed overflow warning.
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* tests/split/b-chunk.sh: Skip each file that does not exist.
Some systems lack /proc/version or /sys/kernel/profiling
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* tests/misc/od-j.sh: Non standard comparison order.
* tests/split/b-chunk.sh: Confusing input file name.
* tests/tail-2/tail-c.sh: Redundant require ulimit.
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Fix similar problems in head, od, split, tac, and tail.
Reported by George Shuklin in: http://bugs.gnu.org/18621
* NEWS: Document this.
* src/head.c (elseek): Move up.
(elide_tail_bytes_pipe, elide_tail_lines_pipe): New arg
CURRENT_POS. All uses changed.
(elide_tail_bytes_file, elide_tail_lines_file):
New arg ST and remove arg SIZE. All uses changed.
* src/head.c (elide_tail_bytes_file):
* src/od.c (skip): Avoid optimization for /sys files, where
st_size is bogus and st_size == st_blksize.
Don't report error at EOF when not optimizing.
* src/head.c, src/od.c, src/tail.c: Include "stat-size.h".
* src/split.c (input_file_size): New function.
(bytes_split, lines_chunk_split, bytes_chunk_extract): New arg
INITIAL_READ. All uses changed. Use it to double-check st_size.
* src/tac.c (tac_seekable): New arg FILE_POS. All uses changed.
(copy_to_temp): Return size of temp file. All uses changed.
* src/tac.c (tac_seekable):
* src/tail.c (tail_bytes):
* src/wc.c (wc):
Don't trust st_size; double-check by reading.
* src/wc.c (wc): New arg CURRENT_POS. All uses changed.
* tests/local.mk (all_tests): Add tests/misc/wc-proc.sh,
tests/misc/od-j.sh, tests/tail-2/tail-c.sh.
* tests/misc/head-c.sh:
* tests/misc/tac-2-nonseekable.sh:
* tests/split/b-chunk.sh:
Add tests for problems with /proc and /sys files.
* tests/misc/od-j.sh, tests/misc/wc-proc.sh, tests/tail-2/tail-c.sh:
New files.
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* doc/coreutils.texi (stat invocation): Add a paragraph documenting
stat's output format when the --terse option is specified, both in
normal and in --file-system mode.
Reported by Dan Jacobson <jidanni@jidanni.org>
in http://bugs.gnu.org/18624
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* init.cfg (gcc_shared_): -ldl has to be positioned after the object
files that may rely upon it. This fixes tests/cp/nfs-removal-race.sh
which references dlsym() from libdl.
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A syntax-check recently added to gnulib would trigger a failure
(once gnulib gets updated here) for a statement introduced with
commit v8.23-43-gaf2a4ed:
src/dd.c:806: char const *time_fmt = _(", %g s, %s/s\n");;
maint.mk: Double semicolon detected
make: *** [sc_prohibit_double_semicolon] Error 1
* src/dd.c (print_xfer_stats): s/;;/;/
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* src/dd.c: Report the transfer progress every second when the
new status=progress level is used. Adjust the handling and
description of the status= option so that they're treated as
mutually exclusive levels, rather than flags with implicit precedence.
* doc/coreutils.texi (dd invocation): Document the new progress
status level. Reference the new level in the description of SIGUSR1.
* tests/dd/stats.sh: Add new test for status=progress.
* tests/dd/misc.sh: Change so status=none only takes precedence
if it's the last level specified.
* NEWS: Mention the feature.
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* src/dd.c (ifd_reopen): A new wrapper to ensure we
don't exit upon receiving a SIGUSR1 in a blocking open()
on a fifo for example.
(iftruncate): Likewise for ftruncate().
(iread): Process signals also after a short read.
(install_signal_handlers): Install SIGINFO/SIGUSR1 handler
even if set to SIG_IGN, as this is what the parent can easily
set from a shell script that can send SIGUSR1 without the
possiblity of inadvertently killing the dd process.
* doc/coreutils.texi (dd invocation): Improve the example to
show robust usage wrt signal races and short reads.
* tests/dd/stats.sh: A new test for various signal races.
* tests/local.mk: Reference the new test.
* NEWS: Mention the fix.
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Problem reported by Göran Uddeborg in: http://bugs.gnu.org/18540
* tests/misc/sort.pl: New test 23.
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On some filesystems (BTRFS), moving a file within the filesystem may
cross subvolume boundaries and we can use a lightweight reflink copy,
similar to what cp(1) can do, which is faster than a full file copy.
This is enabled by default because it's only an optimization for
the fall back copy and does not break user expectations or usability.
* src/mv.c (cp_option_init): Set the reflink mode to AUTO.
* NEWS: Mention the improvement.
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* src/stty.c (usage): Exclude unsupported options from --help,
which for example impacts the "dsusp" and "cdtrdsr" options on Linux.
Fixes http://bugs.gnu.org/18506
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"E.g." stands for latin "exempli gratia" which is typically read
as "for example". "E.g." does not stand for the word "example".
As such, "for e.g." might be read as "for for example".
Fix this usage by simply replacing "e.g." with "example".
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* man/local.mk (.x.1): Move the program name argument down after
the last option argument when calling $(run_help2man).
While the other way would be accepted for the GNU help2man program,
it is not for the 'dummy-man' script (called as a fallback on
systems lacking perl).
The wrong order was introduced in commit v8.21-119-gb3578fc while
adding the --info-page option.
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* man/dummy-man: Fix argument count check, now only permitting
exactly 1 argument, the program name.
Reported by Andreas Schwab <schwab@linux-m68k.org>
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* man/dummy-man: Fix argument count check,
allowing dummy-man to run (on systems without perl).
Fixes http://bugs.gnu.org/18531
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* .gitignore: Remove reference to no longer generated make file.
* configure.ac: Don't bother generating placeholder make file.
* man/local.mk: Hardcode the man page deps list for normal builds
to be compatible with all make implementations and configure options.
Note in SINGLE_BINARY mode, all man pages will be generated on
any change to the coreutils binary, but development will generally
not be done in this mode, so this shouldn't be an issue.
Fixes http://bugs.gnu.org/18055
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* src/dircolors.c (main): Parenthesize !VAR as LHS to "<",
to avoid triggering gcc's new -Wlogical-not-parentheses warning.
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Following on from commit v5.92-729-g130dd06, also avoid
the erroneous directory hardlink warning with -H.
* src/copy.c (copy_internal): Also handle the -H case
for command line arguments.
* tests/cp/duplicate-sources.sh: Augment the test case.
* NEWS: Augment the news entry.
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* src/copy.c (copy_internal): Handle the case where we have the
same destination directory as already encountered, which can only
be due to the corresponding source directory being specified multiple
times.
* tests/cp/duplicate-sources.sh: Add a test for the new multiply
specified directory case, and the existing multiply specified file case.
* tests/local.mk: Reference the new test.
* NEWS: Mention the bug fix.
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* src/system.h (emit_ancillary_info): Take the invariant PROGRAM_NAME
as a parameter, so that consistent references are made to online docs
and texinfo nodes, when a --program-prefix is in place. Note the
man pages don't need this fix as they're generated before the program
prefix is used.
* NEWS: Mention the improvements in references to online documentation.
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* src/system.h (emit_ancillary_info): For commands that don't have
a 1:1 mapping with the texinfo node names, provide a mapping to
the correct node.
* doc/coreutils.texi: Add some extra cross references noticed while
checking this.
Fixes http://bugs.debian.org/762092
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On XFS, when creating the ~2G test file 'big' in a for-loop by
appending 20M each time, the file ends up using ~4G - visible in
'st_blocks'. The unused space would be reclaimed later.
This feature is called "speculative preallocation" which aims at
avoiding fragmentation.
According to the XFS FAQ [1], there are two particular aspects of
XFS speculative preallocation that are triggering this:
1. "Applications that repeatedly trigger preallocation and reclaim
cycles [after file close] can cause fragmentation.
Therefore, this pattern is detected and causes the preallocation
to persist beyond the lifecycle of the file descriptor."
2. "Preallocation sizes grow as files grow larger."
[1] http://xfs.org/index.php/XFS_FAQ
Avoid one of the above by only doing a single close (reclaim cycle).
* tests/du/2g.sh: Similar to the fix for a dd test (see commit
v8.22-65-g7c03fe2), avoid speculative preallocation by creating
the 'big' file in one go instead of appending to it in the loop.
Remove debugging statements as the output with 'set -x' is
sufficient nowadays.
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Problem reported by Vincent Lefevre in: http://bugs.gnu.org/18449
* src/cat.c (main): Allow copying an empty file to itself.
* tests/misc/cat-self.sh: New test.
* tests/local.mk (all_tests): Add it.
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* src/system.h (emit_ancillary_info): Add a direct reference
to the corresponding online info documentation. Corresponding
redirects were put in place on www.gnu.org to allow for concise links.
* help2man: Adjust to add the "online help" link (and subsequent
translation bugs link) to a "REPORTING BUGS" section.
Also add the concise links for further information in --help
to the "SEE ALSO" section, and dispense with the more verbose
default for that.
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old form: coreutils '$cmd invocation'
new form: '(coreutils) $cmd invocation'
The old form erroneously referenced the node for the 'coreutils'
multi-call program. Now that problematic node name was renamed
in commit v8.23-18-g72e470b, but the newer less ambiguous form
also has the advantage of working with the pinfo viewer for example.
Full discussion at http://bugs.gnu.org/18428
* man/local.mk: Adjust man page references to texinfo nodes.
* src/system.h: Adjust --help references to texinfo nodes.
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* cfg.mk (sc_system_h_headers): Don't exclude libstdbuf.c.
* src/libstdbuf.c: Remove headers already included in system.h.
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* src/local.mk (transform): commit v8.23-22-g6f9b018 discarded all
transformations on the libstdbuf.so name. Be more conservative and
only exclude the $(program_transform_name) portion for libstdbuf.
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* src/local.mk (transform): Skip the transformation for libstdbuf
since that should not be subject to name clashes, and we need
to reference the name directly in LD_PRELOAD etc.
* configure.ac: Add a comment on the coupling of pkglibexec_PROGRAMS
to $(transform).
Issue reported at https://trac.macports.org/ticket/44922
Improved by Nick Bowler
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Avoid 2 new syntax-check failures introduced in commit v8.23-19-g8defcee
* cfg.mk (sc_some_programs_must_avoid_exit_failure): s/exit/return/.
* src/whoami.c (main): Reinstate translation marker for diagnostic.
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The C standard says this isn't portable, if you include
standard include files.
* build-aux/gen-single-binary.sh:
* src/coreutils-arch.c (single_binary_main_arch)
(single_binary_main_uname):
* src/coreutils-dir.c (single_binary_main_ls)
(_single_binary_main_dir):
* src/coreutils-vdir.c (single_binary_main_ls)
(_single_binary_main_vdir):
* src/coreutils.c (SINGLE_BINARY_PROGRAM):
Remove leading _ from single_binary prefix.
* src/numfmt.c (round_style): Rename from _round. All uses changed.
(inval_style): Rename from _invalid. All uses changed.
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* build-aux/gen-single-binary.sh: Don't use ATTRIBUTE_NORETURN
for main functions.
* src/base64.c, src/basename.c, src/cat.c, src/chcon.c, src/chgrp.c:
* src/chmod.c, src/chown.c, src/chroot.c, src/cksum.c, src/comm.c:
* src/cp.c, src/csplit.c, src/cut.c, src/date.c, src/dd.c, src/df.c:
* src/dircolors.c, src/dirname.c, src/du.c, src/echo.c, src/env.c:
* src/expand.c, src/expr.c, src/factor.c, src/fmt.c, src/fold.c:
* src/getlimits.c, src/groups.c, src/head.c, src/hostid.c:
* src/hostname.c, src/id.c, src/install.c, src/join.c, src/kill.c:
* src/link.c, src/ln.c, src/logname.c, src/ls.c, src/make-prime-list.c:
* src/md5sum.c, src/mkdir.c, src/mkfifo.c, src/mknod.c, src/mktemp.c:
* src/mv.c, src/nice.c, src/nl.c, src/nohup.c, src/nproc.c:
* src/numfmt.c, src/od.c, src/paste.c, src/pathchk.c, src/pinky.c:
* src/pr.c, src/printenv.c, src/printf.c, src/ptx.c, src/pwd.c:
* src/readlink.c, src/realpath.c, src/rm.c, src/rmdir.c, src/runcon.c:
* src/seq.c, src/shred.c, src/shuf.c, src/sleep.c, src/sort.c:
* src/split.c, src/stat.c, src/stdbuf.c, src/stty.c, src/sum.c:
* src/sync.c, src/tac.c, src/tail.c, src/tee.c, src/timeout.c:
* src/touch.c, src/tr.c, src/true.c, src/truncate.c, src/tsort.c:
* src/tty.c, src/uname.c, src/unexpand.c, src/uniq.c, src/unlink.c:
* src/uptime.c, src/users.c, src/wc.c, src/who.c, src/whoami.c:
In 'main' functions, Prefer 'return status;' to 'exit (status);'.
* src/coreutils-arch.c (_single_binary_main_uname)
(_single_binary_main_arch):
* src/coreutils-dir.c, src/coreutils-vdir.c (_single_binary_main_ls)
(_single_binary_main_dir, _single_binary_main_vdir):
Omit ATTRIBUTE_NORETURN. Return a value.
* src/coreutils.c (SINGLE_BINARY_PROGRAM): Omit ATTRIBUTE_NORETURN.
(launch_program): Now static.
* src/dd.c (finish_up): New function.
(quit, main): Use it.
* src/getlimits.c (main): Return a proper exit status.
* src/test.c (test_main_return): New macro.
(main): Use it.
* src/logname.c, src/nohup.c, src/whoami.c:
Use 'error' to simplify exit status in 'main' function.
* src/yes.c (main): Use 'return' rather than 'error' to exit,
so that GCC doesn't suggest ATTRIBUTE_NORETURN.
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This supports longstanding shell commands like
'info coreutils "touch invocation"'.
Problem reported by Vincent Lefevre via Bob Proulx in:
http://bugs.gnu.org/18428
* doc/coreutils.texi (Multi-call invocation):
Rename from "coreutils invocation".
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