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* tests/fold/fold-zero-width.sh: Check the shell was able to create
the redirection file, as intermittently on CentOS 5,6,7 this wasn't
the case, with the shell giving an xmalloc failure due to the ulimit.
Reported by William Bader and Bruno Haible.
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* tests/fold/fold-characters.sh: Ensure we have independent verification
of the width of characters before testing based on those widths.
* tests/fold/fold-zero-width.sh: Likewise.
* tests/fold/fold.pl: Only compare the exit status,
as the error message can be translated.
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* tests/fold/fold-zero-width.sh: Increase vm limit to avoid
failures on CentOS 5,6,7. Match the limit used in write-errors.sh
as per commit v9.5-255-g0bd149403
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This was noticed with:
trap '' PIPE && # Ignore SIGPIPE
make check TESTS=tests/fold/fold-characters.sh SUBDIRS=.
* tests/fold/fold-characters.sh: Move memory limit test to ...
* tests/misc/write-errors.sh: ... which avoids "write error"
messages on stderr due to the ignored SIGPIPE. It also protects
the fold invocation with a timeout(1) so that fold implementations
that don't exit promptly upon write error don't hang the test suite
(Like we would have done before commit v9.7-311-gc95c7ee76).
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* src/fold.c (write_out): A new helper to check all writes.
(fold-file): Use write_out() for all writes.
* tests/fold/fold-zero-width.sh: Adjust to writing more
data in various patterns, rather than two buffers of NULs.
This is a more robust memory bound check, and the '\303' case
tests this particular logic change.
* NEWS: fold now exits immediately, not just promptly.
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* tests/fold/fold-zero-width.sh: Check relatively large test file
is created appropriately. Also apply more idomatic wc -l usage.
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* src/fold.c (fold_file): Prefer putchar ('\n') to copying characters.
If we do not have room in the output buffer print it since it is not a
full line of text.
* tests/fold/fold-zero-width.sh: New test case.
* tests/local.mk (all_tests): Add it.
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This avoids a test failure on FreeBSD 14, MacOS 15, and musl.
Fix suggested by Pádraig Brady in:
<https://bugs.gnu.org/79301#32>.
* tests/fold/fold-spaces.sh (isblank): New function. Only run the tests
if the character is treated as blank.
Fixes https://bugs.gnu.org/79301
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* src/fold.c (fold_file): Continue the loop when we have buffered bytes
but nothing left to read from the file.
(adjust_column): Don't assume that the character is printable.
* tests/fold/fold-characters.sh: Add a new test case.
(bad_unicode): New function.
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* tests/fold/fold.pl: The i18n patch didn't actually test folding
of multi-byte characters, so add tests for various multi-byte forms.
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* tests/fold/fold.pl: Copy tests from Fedora,
removing copy & pasted logic that was
extraneous to either the i18n patch or upstream.
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* src/getlimits.c (main): Output IO_BUFSIZE, useful for
sizing data for tests.
* tests/fold/fold-characters.sh: Use it rather than hardcoding.
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* src/fold.c (fold_file): Replace invalid characters with the original
byte read. Copy multibyte sequences that may not yet be read to the
start of the buffer before reading more bytes.
* tests/fold/fold-characters.sh: Add a test case.
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* tests/misc/fold.pl: Move from here to ...
* tests/fold/fold.pl: ... here.
* tests/local.mk: Adjust accordingly.
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Enforcing this interface behavior is worthwhile
irrespective of our current implementation,
to ensure future or other implementations conform.
* tests/fold/fold-characters.sh: Ensure the fold implementation
uses bounded memory.
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* src/fold.c: Include mcel.h.
(count_bytes): Remove variable.
(counting_mode, last_character_width): New variables.
(shortopts, long_options): Add the option.
(adjust_column): If --characters is in used account for number of
characters instead of their width.
(fold_file): Use getline and iterate over the result with mcel functions
to handle multibyte characters.
(main): Check for the option.
* src/local.mk (src_fold_LDADD): Add $(LIBC32CONV), $(LIBUNISTRING), and
$(MBRTOWC_LIB).
* tests/fold/fold-characters.sh: New file.
* tests/fold/fold-spaces.sh: New file.
* tests/fold/fold-nbsp.sh: New file.
* tests/local.mk (all_tests): Add the tests.
* NEWS: Mention the new option.
* doc/coreutils.texi (fold invocation): Likewise.
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