tests/sort/sort-debug-warn.sh
#!/bin/sh
# Test warnings for sort options

# Copyright (C) 2010-2025 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 <https://www.gnu.org/licenses/>.

. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
print_ver_ sort

cat <<\EOF > exp
1
sort: text ordering performed using simple byte comparison
sort: key 1 has zero width and will be ignored
2
sort: text ordering performed using simple byte comparison
sort: key 1 has zero width and will be ignored
sort: numbers use '.' as a decimal point in this locale
3
sort: text ordering performed using simple byte comparison
sort: key 1 is numeric and spans multiple fields
sort: numbers use '.' as a decimal point in this locale
4
sort: text ordering performed using simple byte comparison
sort: numbers use '.' as a decimal point in this locale
sort: options '-bghMRrV' are ignored
5
sort: text ordering performed using simple byte comparison
sort: numbers use '.' as a decimal point in this locale
sort: options '-bghMRV' are ignored
sort: option '-r' only applies to last-resort comparison
6
sort: text ordering performed using simple byte comparison
sort: numbers use '.' as a decimal point in this locale
sort: option '-r' only applies to last-resort comparison
7
sort: text ordering performed using simple byte comparison
sort: leading blanks are significant in key 2; consider also specifying 'b'
sort: numbers use '.' as a decimal point in this locale
sort: options '-bg' are ignored
8
sort: text ordering performed using simple byte comparison
sort: numbers use '.' as a decimal point in this locale
9
sort: text ordering performed using simple byte comparison
sort: numbers use '.' as a decimal point in this locale
sort: option '-b' is ignored
10
sort: text ordering performed using simple byte comparison
sort: numbers use '.' as a decimal point in this locale
11
sort: text ordering performed using simple byte comparison
sort: leading blanks are significant in key 1; consider also specifying 'b'
12
sort: text ordering performed using simple byte comparison
sort: leading blanks are significant in key 1; consider also specifying 'b'
13
sort: text ordering performed using simple byte comparison
sort: leading blanks are significant in key 1; consider also specifying 'b'
sort: option '-d' is ignored
14
sort: text ordering performed using simple byte comparison
sort: leading blanks are significant in key 1; consider also specifying 'b'
sort: option '-i' is ignored
15
sort: text ordering performed using simple byte comparison
16
sort: text ordering performed using simple byte comparison
17
sort: text ordering performed using simple byte comparison
EOF

echo 1 >> out
sort -s -k2,1 --debug /dev/null 2>>out || fail=1
echo 2 >> out
sort -s -k2,1n --debug /dev/null 2>>out || fail=1
echo 3 >> out
sort -s -k1,2n --debug /dev/null 2>>out || fail=1
echo 4 >> out
sort -s -rRVMhgb -k1,1n --debug /dev/null 2>>out || fail=1
echo 5 >> out
sort -rRVMhgb -k1,1n --debug /dev/null 2>>out || fail=1
echo 6 >> out
sort -r -k1,1n --debug /dev/null 2>>out || fail=1
echo 7 >> out
sort -gbr -k1,1n -k1,1r --debug /dev/null 2>>out || fail=1
echo 8 >> out
sort -b -k1b,1bn --debug /dev/null 2>>out || fail=1 # no warning
echo 9 >> out
sort -b -k1,1bn --debug /dev/null 2>>out || fail=1
echo 10 >> out
sort -b -k1,1bn -k2b,2 --debug /dev/null 2>>out || fail=1 # no warning
echo 11 >> out
sort -r -k1,1r --debug /dev/null 2>>out || fail=1 # no warning for redundant opt
echo 12 >> out
sort -i -k1,1i --debug /dev/null 2>>out || fail=1 # no warning
echo 13 >> out
sort -d -k1,1b --debug /dev/null 2>>out || fail=1
echo 14 >> out
sort -i -k1,1d --debug /dev/null 2>>out || fail=1
echo 15 >> out
sort -r --debug /dev/null 2>>out || fail=1 #no warning
echo 16 >> out
sort -rM --debug /dev/null 2>>out || fail=1 #no warning
echo 17 >> out
sort -rM -k1,1 --debug /dev/null 2>>out || fail=1 #no warning
compare exp out || fail=1


cat <<\EOF > exp
sort: failed to set locale
sort: text ordering performed using simple byte comparison
EOF
LC_ALL=missing sort --debug /dev/null 2>out || fail=1
# musl libc maps unknown locales to the default utf8 locale
# with no way to determine failures.  This is discussed at:
# https://www.openwall.com/lists/musl/2016/04/02/1
if ! grep -E 'using .*(missing|C.UTF-8).* sorting rules' out; then
  compare exp out || fail=1
fi


cat <<\EOF > exp
sort: text ordering performed using simple byte comparison
sort: key 1 is numeric and spans multiple fields
sort: obsolescent key '+2 -1' used; consider '-k 3,1' instead
sort: key 2 has zero width and will be ignored
sort: numbers use '.' as a decimal point in this locale
sort: option '-b' is ignored
sort: option '-r' only applies to last-resort comparison
EOF
sort --debug -rb -k2n +2.2 -1b /dev/null 2>out || fail=1
compare exp out || fail=1


# check sign, decimal point, and grouping character warnings
cat <<\EOF > exp
sort: text ordering performed using simple byte comparison
sort: key 1 is numeric and spans multiple fields
sort: field separator ',' is treated as a group separator in numbers
EOF
if test $(printf '0,9\n0,8\n' | sort -ns | tail -n1) = '0,9'; then
  # thousands_sep == ,
  sort -nk1 -t, --debug /dev/null 2>out || fail=1
  compare exp out || fail=1
fi

cat <<\EOF > exp
sort: text ordering performed using simple byte comparison
sort: key 1 is numeric and spans multiple fields
sort: field separator '.' is treated as a decimal point in numbers
EOF
sort -nk1 -t. --debug /dev/null 2>out || fail=1
compare exp out || fail=1

cat <<\EOF > exp
sort: text ordering performed using simple byte comparison
sort: key 1 is numeric and spans multiple fields
sort: field separator '-' is treated as a minus sign in numbers
sort: numbers use '.' as a decimal point in this locale
EOF
sort -nk1 -t- --debug /dev/null 2>out || fail=1
compare exp out || fail=1

cat <<\EOF > exp
sort: text ordering performed using simple byte comparison
sort: key 1 is numeric and spans multiple fields
sort: field separator '+' is treated as a plus sign in numbers
sort: numbers use '.' as a decimal point in this locale
EOF
sort -gk1 -t+ --debug /dev/null 2>out || fail=1
compare exp out || fail=1

Exit $fail
