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coreutils/coreutils-i18n-expand-unexpand.patch
Tom Stellard f4a53e34d0 Fix missing inline function definition 
The coreutils-i18n-expand-unexpand.patch adds 3 definitions of the
mbfile_multi_getc function.  2 of the definitions are marked with
the inline keyword, which means that there must also be an externally
visible definition.  The 3rd definition is marked extern inline, which statisfies
this requirement.  However, the 3rd definition is defined in mbfile.c
which is not compiled or linked in to any executable.  This causes build
failures if the compiler decides not to inline the function (which it is
allowed to do) e.g.

src/expand.c:153: undefined reference to `mbfile_multi_getc'

clang does not inline this function, but gcc does which is why
you will not see this failure when compiling with gcc.  However,
gcc could choose not to inline this, so even though the build succeeds,
it is depending on an implementation detail of gcc rather than the
C specification.

In order to fix this problem, mbfile.c was added to the list of sources for
any executable that uses mbfile_multi_getc.
2020-04-17 04:12:54 +00:00

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From e87ab5b991b08092a7e07af82b3ec822a8604151 Mon Sep 17 00:00:00 2001
From: Ondrej Oprala <ooprala@redhat.com>
Date: Wed, 5 Aug 2015 09:15:09 +0200
Subject: [PATCH] expand,unexpand: add multibyte support
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
* NEWS: Mention the changes.
* bootstrap.conf: Add mbfile to the list of modules.
* configure.ac: Properly initialize mbfile.
* src/expand.c (expand): Iterate over multibyte characters properly.
* src/unexpand.c (unexpand): Iterate over multibyte characters
properly.
* tests/local.mk: Add new tests.
* tests/{expand,unexpand}/mb.sh: New tests.
Co-authored-by: Pádraig Brady <pbrady@redhat.com>
---
bootstrap.conf | 1 +
configure.ac | 2 +
lib/mbfile.c | 3 +
lib/mbfile.h | 255 +++++++++++++++++++++++++++++++++++++++++++++++++++
m4/mbfile.m4 | 14 +++
src/expand.c | 43 +++++----
src/local.mk | 4 +-
src/unexpand.c | 54 +++++++----
tests/expand/mb.sh | 98 ++++++++++++++++++++
tests/local.mk | 2 +
tests/unexpand/mb.sh | 97 ++++++++++++++++++++
10 files changed, 535 insertions(+), 34 deletions(-)
create mode 100644 lib/mbfile.c
create mode 100644 lib/mbfile.h
create mode 100644 m4/mbfile.m4
create mode 100755 tests/expand/mb.sh
create mode 100755 tests/unexpand/mb.sh
diff --git a/bootstrap.conf b/bootstrap.conf
index 8a0ff31..a1c78b2 100644
--- a/bootstrap.conf
+++ b/bootstrap.conf
@@ -152,6 +152,7 @@ gnulib_modules="
maintainer-makefile
malloc-gnu
manywarnings
+ mbfile
mbrlen
mbrtowc
mbsalign
diff --git a/configure.ac b/configure.ac
index 1e74b36..24c9725 100644
--- a/configure.ac
+++ b/configure.ac
@@ -427,6 +427,8 @@ fi
# I'm leaving it here for now. This whole thing needs to be modernized...
gl_WINSIZE_IN_PTEM
+gl_MBFILE
+
gl_HEADER_TIOCGWINSZ_IN_TERMIOS_H
if test $gl_cv_sys_tiocgwinsz_needs_termios_h = no && \
diff --git a/lib/mbfile.c b/lib/mbfile.c
new file mode 100644
index 0000000..b0a468e
--- /dev/null
+++ b/lib/mbfile.c
@@ -0,0 +1,3 @@
+#include <config.h>
+#define MBFILE_INLINE _GL_EXTERN_INLINE
+#include "mbfile.h"
diff --git a/lib/mbfile.h b/lib/mbfile.h
new file mode 100644
index 0000000..11f1b12
--- /dev/null
+++ b/lib/mbfile.h
@@ -0,0 +1,255 @@
+/* Multibyte character I/O: macros for multi-byte encodings.
+ Copyright (C) 2001, 2005, 2009-2015 Free Software Foundation, Inc.
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+/* Written by Mitsuru Chinen <mchinen@yamato.ibm.com>
+ and Bruno Haible <bruno@clisp.org>. */
+
+/* The macros in this file implement multi-byte character input from a
+ stream.
+
+ mb_file_t
+ is the type for multibyte character input stream, usable for variable
+ declarations.
+
+ mbf_char_t
+ is the type for multibyte character or EOF, usable for variable
+ declarations.
+
+ mbf_init (mbf, stream)
+ initializes the MB_FILE for reading from stream.
+
+ mbf_getc (mbc, mbf)
+ reads the next multibyte character from mbf and stores it in mbc.
+
+ mb_iseof (mbc)
+ returns true if mbc represents the EOF value.
+
+ Here are the function prototypes of the macros.
+
+ extern void mbf_init (mb_file_t mbf, FILE *stream);
+ extern void mbf_getc (mbf_char_t mbc, mb_file_t mbf);
+ extern bool mb_iseof (const mbf_char_t mbc);
+ */
+
+#ifndef _MBFILE_H
+#define _MBFILE_H 1
+
+#include <assert.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <string.h>
+
+/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
+ <wchar.h>.
+ BSD/OS 4.1 has a bug: <stdio.h> and <time.h> must be included before
+ <wchar.h>. */
+#include <stdio.h>
+#include <time.h>
+#include <wchar.h>
+
+#include "mbchar.h"
+
+#ifndef _GL_INLINE_HEADER_BEGIN
+ #error "Please include config.h first."
+#endif
+_GL_INLINE_HEADER_BEGIN
+#ifndef MBFILE_INLINE
+# define MBFILE_INLINE _GL_INLINE
+#endif
+
+struct mbfile_multi {
+ FILE *fp;
+ bool eof_seen;
+ bool have_pushback;
+ mbstate_t state;
+ unsigned int bufcount;
+ char buf[MBCHAR_BUF_SIZE];
+ struct mbchar pushback;
+};
+
+MBFILE_INLINE void
+mbfile_multi_getc (struct mbchar *mbc, struct mbfile_multi *mbf)
+{
+ size_t bytes;
+
+ /* If EOF has already been seen, don't use getc. This matters if
+ mbf->fp is connected to an interactive tty. */
+ if (mbf->eof_seen)
+ goto eof;
+
+ /* Return character pushed back, if there is one. */
+ if (mbf->have_pushback)
+ {
+ mb_copy (mbc, &mbf->pushback);
+ mbf->have_pushback = false;
+ return;
+ }
+
+ /* Before using mbrtowc, we need at least one byte. */
+ if (mbf->bufcount == 0)
+ {
+ int c = getc (mbf->fp);
+ if (c == EOF)
+ {
+ mbf->eof_seen = true;
+ goto eof;
+ }
+ mbf->buf[0] = (unsigned char) c;
+ mbf->bufcount++;
+ }
+
+ /* Handle most ASCII characters quickly, without calling mbrtowc(). */
+ if (mbf->bufcount == 1 && mbsinit (&mbf->state) && is_basic (mbf->buf[0]))
+ {
+ /* These characters are part of the basic character set. ISO C 99
+ guarantees that their wide character code is identical to their
+ char code. */
+ mbc->wc = mbc->buf[0] = mbf->buf[0];
+ mbc->wc_valid = true;
+ mbc->ptr = &mbc->buf[0];
+ mbc->bytes = 1;
+ mbf->bufcount = 0;
+ return;
+ }
+
+ /* Use mbrtowc on an increasing number of bytes. Read only as many bytes
+ from mbf->fp as needed. This is needed to give reasonable interactive
+ behaviour when mbf->fp is connected to an interactive tty. */
+ for (;;)
+ {
+ /* We don't know whether the 'mbrtowc' function updates the state when
+ it returns -2, - this is the ISO C 99 and glibc-2.2 behaviour - or
+ not - amended ANSI C, glibc-2.1 and Solaris 2.7 behaviour. We
+ don't have an autoconf test for this, yet.
+ The new behaviour would allow us to feed the bytes one by one into
+ mbrtowc. But the old behaviour forces us to feed all bytes since
+ the end of the last character into mbrtowc. Since we want to retry
+ with more bytes when mbrtowc returns -2, we must backup the state
+ before calling mbrtowc, because implementations with the new
+ behaviour will clobber it. */
+ mbstate_t backup_state = mbf->state;
+
+ bytes = mbrtowc (&mbc->wc, &mbf->buf[0], mbf->bufcount, &mbf->state);
+
+ if (bytes == (size_t) -1)
+ {
+ /* An invalid multibyte sequence was encountered. */
+ /* Return a single byte. */
+ bytes = 1;
+ mbc->wc_valid = false;
+ break;
+ }
+ else if (bytes == (size_t) -2)
+ {
+ /* An incomplete multibyte character. */
+ mbf->state = backup_state;
+ if (mbf->bufcount == MBCHAR_BUF_SIZE)
+ {
+ /* An overlong incomplete multibyte sequence was encountered. */
+ /* Return a single byte. */
+ bytes = 1;
+ mbc->wc_valid = false;
+ break;
+ }
+ else
+ {
+ /* Read one more byte and retry mbrtowc. */
+ int c = getc (mbf->fp);
+ if (c == EOF)
+ {
+ /* An incomplete multibyte character at the end. */
+ mbf->eof_seen = true;
+ bytes = mbf->bufcount;
+ mbc->wc_valid = false;
+ break;
+ }
+ mbf->buf[mbf->bufcount] = (unsigned char) c;
+ mbf->bufcount++;
+ }
+ }
+ else
+ {
+ if (bytes == 0)
+ {
+ /* A null wide character was encountered. */
+ bytes = 1;
+ assert (mbf->buf[0] == '\0');
+ assert (mbc->wc == 0);
+ }
+ mbc->wc_valid = true;
+ break;
+ }
+ }
+
+ /* Return the multibyte sequence mbf->buf[0..bytes-1]. */
+ mbc->ptr = &mbc->buf[0];
+ memcpy (&mbc->buf[0], &mbf->buf[0], bytes);
+ mbc->bytes = bytes;
+
+ mbf->bufcount -= bytes;
+ if (mbf->bufcount > 0)
+ {
+ /* It's not worth calling memmove() for so few bytes. */
+ unsigned int count = mbf->bufcount;
+ char *p = &mbf->buf[0];
+
+ do
+ {
+ *p = *(p + bytes);
+ p++;
+ }
+ while (--count > 0);
+ }
+ return;
+
+eof:
+ /* An mbchar_t with bytes == 0 is used to indicate EOF. */
+ mbc->ptr = NULL;
+ mbc->bytes = 0;
+ mbc->wc_valid = false;
+ return;
+}
+
+MBFILE_INLINE void
+mbfile_multi_ungetc (const struct mbchar *mbc, struct mbfile_multi *mbf)
+{
+ mb_copy (&mbf->pushback, mbc);
+ mbf->have_pushback = true;
+}
+
+typedef struct mbfile_multi mb_file_t;
+
+typedef mbchar_t mbf_char_t;
+
+#define mbf_init(mbf, stream) \
+ ((mbf).fp = (stream), \
+ (mbf).eof_seen = false, \
+ (mbf).have_pushback = false, \
+ memset (&(mbf).state, '\0', sizeof (mbstate_t)), \
+ (mbf).bufcount = 0)
+
+#define mbf_getc(mbc, mbf) mbfile_multi_getc (&(mbc), &(mbf))
+
+#define mbf_ungetc(mbc, mbf) mbfile_multi_ungetc (&(mbc), &(mbf))
+
+#define mb_iseof(mbc) ((mbc).bytes == 0)
+
+#ifndef _GL_INLINE_HEADER_BEGIN
+ #error "Please include config.h first."
+#endif
+_GL_INLINE_HEADER_BEGIN
+
+#endif /* _MBFILE_H */
diff --git a/m4/mbfile.m4 b/m4/mbfile.m4
new file mode 100644
index 0000000..8589902
--- /dev/null
+++ b/m4/mbfile.m4
@@ -0,0 +1,14 @@
+# mbfile.m4 serial 7
+dnl Copyright (C) 2005, 2008-2015 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl autoconf tests required for use of mbfile.h
+dnl From Bruno Haible.
+
+AC_DEFUN([gl_MBFILE],
+[
+ AC_REQUIRE([AC_TYPE_MBSTATE_T])
+ :
+])
diff --git a/src/expand.c b/src/expand.c
index 9fa2e10..380e020 100644
--- a/src/expand.c
+++ b/src/expand.c
@@ -37,6 +37,9 @@
#include <stdio.h>
#include <getopt.h>
#include <sys/types.h>
+
+#include <mbfile.h>
+
#include "system.h"
#include "die.h"
#include "xstrndup.h"
@@ -100,19 +103,19 @@ expand (void)
{
/* Input stream. */
FILE *fp = next_file (NULL);
+ mb_file_t mbf;
+ mbf_char_t c;
if (!fp)
return;
+ mbf_init (mbf, fp);
+
while (true)
{
- /* Input character, or EOF. */
- int c;
-
/* If true, perform translations. */
bool convert = true;
-
/* The following variables have valid values only when CONVERT
is true: */
@@ -122,17 +125,23 @@ expand (void)
/* Index in TAB_LIST of next tab stop to examine. */
size_t tab_index = 0;
-
/* Convert a line of text. */
do
{
- while ((c = getc (fp)) < 0 && (fp = next_file (fp)))
- continue;
+ do {
+ mbf_getc (c, mbf);
+ if (mb_iseof (c))
+ {
+ mbf_init (mbf, fp = next_file (fp));
+ continue;
+ }
+ }
+ while (false);
if (convert)
{
- if (c == '\t')
+ if (mb_iseq (c, '\t'))
{
/* Column the next input tab stop is on. */
uintmax_t next_tab_column;
@@ -151,32 +160,34 @@ expand (void)
if (putchar (' ') < 0)
die (EXIT_FAILURE, errno, _("write error"));
- c = ' ';
+ mb_setascii (&c, ' ');
}
- else if (c == '\b')
+ else if (mb_iseq (c, '\b'))
{
/* Go back one column, and force recalculation of the
next tab stop. */
column -= !!column;
tab_index -= !!tab_index;
}
- else
+ /* A leading control character could make us trip over. */
+ else if (!mb_iscntrl (c))
{
- column++;
+ column += mb_width (c);
if (!column)
die (EXIT_FAILURE, 0, _("input line is too long"));
}
- convert &= convert_entire_line || !! isblank (c);
+ convert &= convert_entire_line || mb_isblank (c);
}
- if (c < 0)
+ if (mb_iseof (c))
return;
- if (putchar (c) < 0)
+ mb_putc (c, stdout);
+ if (ferror (stdout))
die (EXIT_FAILURE, errno, _("write error"));
}
- while (c != '\n');
+ while (!mb_iseq (c, '\n'));
}
}
diff --git a/src/local.mk b/src/local.mk
index 72db9c704..ef3bfa469 100644
--- a/src/local.mk
+++ b/src/local.mk
@@ -415,8 +415,8 @@ src_basenc_CPPFLAGS = -DBASE_TYPE=42 $(AM_CPPFLAGS)
src_ginstall_CPPFLAGS = -DENABLE_MATCHPATHCON=1 $(AM_CPPFLAGS)
-src_expand_SOURCES = src/expand.c src/expand-common.c
-src_unexpand_SOURCES = src/unexpand.c src/expand-common.c
+src_expand_SOURCES = src/expand.c src/expand-common.c lib/mbfile.c
+src_unexpand_SOURCES = src/unexpand.c src/expand-common.c lib/mbfile.c
# Ensure we don't link against libcoreutils.a as that lib is
# not compiled with -fPIC which causes issues on 64 bit at least
diff --git a/src/unexpand.c b/src/unexpand.c
index 7801274..569a7ee 100644
--- a/src/unexpand.c
+++ b/src/unexpand.c
@@ -38,6 +38,9 @@
#include <stdio.h>
#include <getopt.h>
#include <sys/types.h>
+
+#include <mbfile.h>
+
#include "system.h"
#include "die.h"
#include "xstrndup.h"
@@ -107,11 +110,12 @@ unexpand (void)
{
/* Input stream. */
FILE *fp = next_file (NULL);
+ mb_file_t mbf;
/* The array of pending blanks. In non-POSIX locales, blanks can
include characters other than spaces, so the blanks must be
stored, not merely counted. */
- char *pending_blank;
+ mbf_char_t *pending_blank;
if (!fp)
return;
@@ -119,12 +123,14 @@ unexpand (void)
/* The worst case is a non-blank character, then one blank, then a
tab stop, then MAX_COLUMN_WIDTH - 1 blanks, then a non-blank; so
allocate MAX_COLUMN_WIDTH bytes to store the blanks. */
- pending_blank = xmalloc (max_column_width);
+ pending_blank = xmalloc (max_column_width * sizeof (mbf_char_t));
+
+ mbf_init (mbf, fp);
while (true)
{
/* Input character, or EOF. */
- int c;
+ mbf_char_t c;
/* If true, perform translations. */
bool convert = true;
@@ -158,12 +164,19 @@ unexpand (void)
do
{
- while ((c = getc (fp)) < 0 && (fp = next_file (fp)))
- continue;
+ do {
+ mbf_getc (c, mbf);
+ if (mb_iseof (c))
+ {
+ mbf_init (mbf, fp = next_file (fp));
+ continue;
+ }
+ }
+ while (false);
if (convert)
{
- bool blank = !! isblank (c);
+ bool blank = mb_isblank (c);
if (blank)
{
@@ -180,16 +193,16 @@ unexpand (void)
if (next_tab_column < column)
die (EXIT_FAILURE, 0, _("input line is too long"));
- if (c == '\t')
+ if (mb_iseq (c, '\t'))
{
column = next_tab_column;
if (pending)
- pending_blank[0] = '\t';
+ mb_setascii (&pending_blank[0], '\t');
}
else
{
- column++;
+ column += mb_width (c);
if (! (prev_blank && column == next_tab_column))
{
@@ -197,13 +210,14 @@ unexpand (void)
will be replaced by tabs. */
if (column == next_tab_column)
one_blank_before_tab_stop = true;
- pending_blank[pending++] = c;
+ mb_copy (&pending_blank[pending++], &c);
prev_blank = true;
continue;
}
/* Replace the pending blanks by a tab or two. */
- pending_blank[0] = c = '\t';
+ mb_setascii (&c, '\t');
+ mb_setascii (&pending_blank[0], '\t');
}
/* Discard pending blanks, unless it was a single
@@ -211,7 +225,7 @@ unexpand (void)
pending = one_blank_before_tab_stop;
}
}
- else if (c == '\b')
+ else if (mb_iseq (c, '\b'))
{
/* Go back one column, and force recalculation of the
next tab stop. */
@@ -221,7 +235,7 @@ unexpand (void)
}
else
{
- column++;
+ column += mb_width (c);
if (!column)
die (EXIT_FAILURE, 0, _("input line is too long"));
}
@@ -229,8 +243,11 @@ unexpand (void)
if (pending)
{
if (pending > 1 && one_blank_before_tab_stop)
- pending_blank[0] = '\t';
- if (fwrite (pending_blank, 1, pending, stdout) != pending)
+ mb_setascii (&pending_blank[0], '\t');
+
+ for (int n = 0; n < pending; ++n)
+ mb_putc (pending_blank[n], stdout);
+ if (ferror (stdout))
die (EXIT_FAILURE, errno, _("write error"));
pending = 0;
one_blank_before_tab_stop = false;
@@ -240,16 +257,17 @@ unexpand (void)
convert &= convert_entire_line || blank;
}
- if (c < 0)
+ if (mb_iseof (c))
{
free (pending_blank);
return;
}
- if (putchar (c) < 0)
+ mb_putc (c, stdout);
+ if (ferror (stdout))
die (EXIT_FAILURE, errno, _("write error"));
}
- while (c != '\n');
+ while (!mb_iseq (c, '\n'));
}
}
diff --git a/tests/expand/mb.sh b/tests/expand/mb.sh
new file mode 100755
index 0000000..7971e18
--- /dev/null
+++ b/tests/expand/mb.sh
@@ -0,0 +1,98 @@
+#!/bin/sh
+
+# Copyright (C) 2012-2015 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
+print_ver_ expand
+
+export LC_ALL=en_US.UTF-8
+
+#input containing multibyte characters
+cat <<\EOF > in || framework_failure_
+1234567812345678123456781
+. . . .
+a b c d
+. . . .
+ä ö ü ß
+. . . .
+EOF
+env printf ' äöü\t. öüä. \tä xx\n' >> in || framework_failure_
+
+cat <<\EOF > exp || framework_failure_
+1234567812345678123456781
+. . . .
+a b c d
+. . . .
+ä ö ü ß
+. . . .
+ äöü . öüä. ä xx
+EOF
+
+expand < in > out || fail=1
+compare exp out > /dev/null 2>&1 || fail=1
+
+#test characters with display widths != 1
+env printf '12345678
+e\t|ascii(1)
+\u00E9\t|composed(1)
+e\u0301\t|decomposed(1)
+\u3000\t|ideo-space(2)
+\uFF0D\t|full-hypen(2)
+' > in || framework_failure_
+
+env printf '12345678
+e |ascii(1)
+\u00E9 |composed(1)
+e\u0301 |decomposed(1)
+\u3000 |ideo-space(2)
+\uFF0D |full-hypen(2)
+' > exp || framework_failure_
+
+expand < in > out || fail=1
+compare exp out > /dev/null 2>&1 || fail=1
+
+#shouldn't fail with "input line too long"
+#when a line starts with a control character
+env printf '\n' > in || framework_failure_
+
+expand < in > out || fail=1
+compare in out > /dev/null 2>&1 || fail=1
+
+#non-Unicode characters interspersed between Unicode ones
+env printf '12345678
+\t\xFF|
+\xFF\t|
+\t\xFFä|
+ä\xFF\t|
+\tä\xFF|
+\xFF\tä|
+äbcdef\xFF\t|
+' > in || framework_failure_
+
+env printf '12345678
+ \xFF|
+\xFF |
+ \xFFä|
+ä\xFF |
+ ä\xFF|
+\xFF ä|
+äbcdef\xFF |
+' > exp || framework_failure_
+
+expand < in > out || fail=1
+compare exp out > /dev/null 2>&1 || fail=1
+
+exit $fail
diff --git a/tests/local.mk b/tests/local.mk
index 192f776..8053397 100644
--- a/tests/local.mk
+++ b/tests/local.mk
@@ -544,6 +544,7 @@ all_tests = \
tests/du/threshold.sh \
tests/du/trailing-slash.sh \
tests/du/two-args.sh \
+ tests/expand/mb.sh \
tests/id/gnu-zero-uids.sh \
tests/id/no-context.sh \
tests/id/context.sh \
@@ -684,6 +685,7 @@ all_tests = \
tests/touch/read-only.sh \
tests/touch/relative.sh \
tests/touch/trailing-slash.sh \
+ tests/unexpand/mb.sh \
$(all_root_tests)
# See tests/factor/create-test.sh.
diff --git a/tests/unexpand/mb.sh b/tests/unexpand/mb.sh
new file mode 100755
index 0000000..60d4c1a
--- /dev/null
+++ b/tests/unexpand/mb.sh
@@ -0,0 +1,97 @@
+#!/bin/sh
+
+# Copyright (C) 2012-2015 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
+print_ver_ unexpand
+
+export LC_ALL=en_US.UTF-8
+
+#input containing multibyte characters
+cat > in <<\EOF
+1234567812345678123456781
+. . . .
+a b c d
+. . . .
+ä ö ü ß
+. . . .
+ äöü . öüä. ä xx
+EOF
+
+cat > exp <<\EOF
+1234567812345678123456781
+. . . .
+a b c d
+. . . .
+ä ö ü ß
+. . . .
+ äöü . öüä. ä xx
+EOF
+
+unexpand -a < in > out || fail=1
+compare exp out > /dev/null 2>&1 || fail=1
+
+#test characters with a display width larger than 1
+
+env printf '12345678
+e |ascii(1)
+\u00E9 |composed(1)
+e\u0301 |decomposed(1)
+\u3000 |ideo-space(2)
+\uFF0D |full-hypen(2)
+' > in || framework_failure_
+
+env printf '12345678
+e\t|ascii(1)
+\u00E9\t|composed(1)
+e\u0301\t|decomposed(1)
+\u3000\t|ideo-space(2)
+\uFF0D\t|full-hypen(2)
+' > exp || framework_failure_
+
+unexpand -a < in > out || fail=1
+compare exp out > /dev/null 2>&1 || fail=1
+
+#test input where a blank of width > 1 is not being substituted
+in="$(LC_ALL=en_US.UTF-8 printf ' \u3000 ö ü ß')"
+exp=' 　 ö ü ß'
+
+unexpand -a < in > out || fail=1
+compare exp out > /dev/null 2>&1 || fail=1
+
+#non-Unicode characters interspersed between Unicode ones
+env printf '12345678
+ \xFF|
+\xFF |
+ \xFFä|
+ä\xFF |
+ ä\xFF|
+\xFF ä|
+äbcdef\xFF |
+' > in || framework_failure_
+
+env printf '12345678
+\t\xFF|
+\xFF\t|
+\t\xFFä|
+ä\xFF\t|
+\tä\xFF|
+\xFF\tä|
+äbcdef\xFF\t|
+' > exp || framework_failure_
+
+unexpand -a < in > out || fail=1
+compare exp out > /dev/null 2>&1 || fail=1
--
2.7.4
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