tests: ls: add quoting-utf8 test for Unicode quotes in UTF-8 locales

* tests/ls/quoting-utf8.sh: New test verifying that
--quoting-style=locale and --quoting-style=clocale use Unicode
left/right single quotation marks in UTF-8 locales, and that
embedded apostrophes and double quotes are not escaped when the
delimiters are different characters.
Also check C locale fallback to ASCII quotes.
* tests/local.mk: Reference the new test.
https://github.com/coreutils/coreutils/pull/243

diff --git a/tests/local.mk b/tests/local.mk
index c92c7e3df8bbb5867c47aa69bea00b543b08badf..beb84eaf4081ad8b6d614a5b953fc434bb0cbc78 100644 (file)
--- a/tests/local.mk
+++ b/tests/local.mk
@@ -708,6 +708,7 @@ all_tests =                                 \
   tests/ls/non-utf8-hidden.sh                  \
   tests/ls/selinux-segfault.sh                 \
   tests/ls/quote-align.sh                      \
+  tests/ls/quoting-utf8.sh                     \
   tests/ls/size-align.sh                       \
   tests/ls/readdir-mountpoint-inode.sh         \
   tests/ls/recursive.sh                                \

diff --git a/tests/ls/quoting-utf8.sh b/tests/ls/quoting-utf8.sh
new file mode 100755 (executable)
index 0000000..a89c0db
--- /dev/null
+++ b/tests/ls/quoting-utf8.sh
@@ -0,0 +1,70 @@
+#!/bin/sh
+# Ensure --quoting-style=locale/clocale uses Unicode quotes in UTF-8 locales
+
+# Copyright (C) 2026 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/>.
+
+. "${srcdir=.}/tests/init.sh";
+print_ver_ ls
+
+test "$(LC_ALL=en_US.UTF-8 locale charmap 2>/dev/null)" = UTF-8 ||
+  skip_ 'en_US.UTF-8 locale not available'
+
+touch 'hello world' "it's" 'say "hi"' 'tab     here' || framework_failure_
+
+# Note we use en_US as there are no translations provided,
+# and so locale quoting for UTF-8 is hardcoded to these quoting characters:
+# U+2018 = \xe2\x80\x98 (LEFT SINGLE QUOTATION MARK)
+# U+2019 = \xe2\x80\x99 (RIGHT SINGLE QUOTATION MARK)
+lq=$(printf '\342\200\230')
+rq=$(printf '\342\200\231')
+
+# In UTF-8 locales, both locale and clocale should use Unicode quotes
+for style in locale clocale; do
+  LC_ALL=en_US.UTF-8 ls --quoting-style=$style > out_${style}_utf8 || fail=1
+
+  # Verify Unicode left/right quotes are present
+  grep "$lq" out_${style}_utf8 > /dev/null 2>&1 \
+    || { echo "$style UTF-8: missing Unicode left quote"; fail=1; }
+  grep "$rq" out_${style}_utf8 > /dev/null 2>&1 \
+    || { echo "$style UTF-8: missing Unicode right quote"; fail=1; }
+
+  # Verify 'hello world' is quoted with Unicode quotes
+  grep "^${lq}hello world${rq}\$" out_${style}_utf8 > /dev/null 2>&1 \
+    || { echo "$style UTF-8: 'hello world' not properly quoted"; fail=1; }
+
+  # Embedded apostrophe should NOT be escaped (delimiters are different chars)
+  grep "^${lq}it's${rq}\$" out_${style}_utf8 > /dev/null 2>&1 || \
+    { echo "$style UTF-8: embedded apostrophe shouldn't be escaped"; fail=1; }
+
+  # Embedded double quote should NOT be escaped
+  grep "^${lq}say \"hi\"${rq}\$" out_${style}_utf8 > /dev/null 2>&1 || \
+    { echo "$style UTF-8: embedded double quote shouldn't be escaped"; fail=1; }
+
+  # Control characters should still be C-escaped
+  grep "tab\\\\there" out_${style}_utf8 > /dev/null 2>&1 \
+    || { echo "$style UTF-8: tab should be escaped as \\t"; fail=1; }
+done
+
+# In C locale, locale uses ASCII single quotes, clocale uses ASCII double quotes
+LC_ALL=C ls --quoting-style=locale > out_locale_c || fail=1
+grep "^'hello world'\$" out_locale_c > /dev/null 2>&1 \
+  || { echo "locale C: expected ASCII single quotes"; fail=1; }
+
+LC_ALL=C ls --quoting-style=clocale > out_clocale_c || fail=1
+grep '^"hello world"$' out_clocale_c > /dev/null 2>&1 \
+  || { echo "clocale C: expected ASCII double quotes"; fail=1; }
+
+Exit $fail