sort: make -h work with -k and blank used as thousands separator

* src/sort.c (traverse_raw_number): Allow to skip only one occurrence
of thousands_sep to avoid finding the unit in the next column in case
thousands_sep matches as blank and is used as column delimiter.
* tests/misc/sort-h-thousands-sep.sh: Add regression test for this bug.
* tests/local.mk: Reference the test.
* NEWS: Mention the bug fix.
Reported at https://bugzilla.redhat.com/1355780
Fixes http://bugs.gnu.org/24015

2 files changed, 48 insertions, 0 deletions

diff --git a/tests/local.mk b/tests/local.mk
index 27cbf6e5d..889142af4 100644
--- a/tests/local.mk
+++ b/tests/local.mk
@@ -348,6 +348,7 @@ all_tests =					\
   tests/misc/sort-discrim.sh			\
   tests/misc/sort-files0-from.pl		\
   tests/misc/sort-float.sh			\
+  tests/misc/sort-h-thousands-sep.sh		\
   tests/misc/sort-merge.pl			\
   tests/misc/sort-merge-fdlimit.sh		\
   tests/misc/sort-month.sh			\
diff --git a/tests/misc/sort-h-thousands-sep.sh b/tests/misc/sort-h-thousands-sep.sh
new file mode 100755
index 000000000..17f1b6c98
--- /dev/null
+++ b/tests/misc/sort-h-thousands-sep.sh
@@ -0,0 +1,47 @@
+#!/bin/sh
+# exercise 'sort -h' in locales where thousands separator is blank
+
+# Copyright (C) 2016 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/>.
+
+. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
+print_ver_ sort
+test "$(LC_ALL=sv_SE locale thousands_sep)" = ' ' \
+  || skip_ 'The Swedish locale with blank thousands separator is unavailable.'
+
+tee exp1 > in << _EOF_
+1       1k      4 003   1M
+2k      2M      4 002   2
+3M      3       4 001   3k
+_EOF_
+
+cat > exp2 << _EOF_
+3M      3       4 001   3k
+1       1k      4 003   1M
+2k      2M      4 002   2
+_EOF_
+
+cat > exp3 << _EOF_
+3M      3       4 001   3k
+2k      2M      4 002   2
+1       1k      4 003   1M
+_EOF_
+
+for i in 1 2 3; do
+  LC_ALL="sv_SE.utf8" sort -h -k $i "in" > "out${i}" || fail=1
+  compare "exp${i}" "out${i}" || fail=1
+done
+
+Exit $fail