1 files changed, 134 insertions, 0 deletions
diff --git a/t/t4210-log-i18n.sh b/t/t4210-log-i18n.sh
new file mode 100755
index 0000000..d2dfcf1
--- /dev/null
+++ b/t/t4210-log-i18n.sh
@@ -0,0 +1,134 @@
+#!/bin/sh
+
+test_description='test log with i18n features'
+. ./lib-gettext.sh
+
+# two forms of é
+utf8_e=$(printf '\303\251')
+latin1_e=$(printf '\351')
+
+# invalid UTF-8
+invalid_e=$(printf '\303\50)') # ")" at end to close opening "("
+
+have_reg_illseq=
+if test_have_prereq GETTEXT_LOCALE &&
+	! LC_ALL=$is_IS_locale test-tool regex --silent $latin1_e
+then
+	have_reg_illseq=1
+fi
+
+test_expect_success 'create commits in different encodings' '
+	test_tick &&
+	cat >msg <<-EOF &&
+	utf8
+
+	t${utf8_e}st
+	EOF
+	git add msg &&
+	git -c i18n.commitencoding=utf8 commit -F msg &&
+	cat >msg <<-EOF &&
+	latin1
+
+	t${latin1_e}st
+	EOF
+	git add msg &&
+	git -c i18n.commitencoding=ISO-8859-1 commit -F msg
+'
+
+test_expect_success 'log --grep searches in log output encoding (utf8)' '
+	cat >expect <<-\EOF &&
+	latin1
+	utf8
+	EOF
+	git log --encoding=utf8 --format=%s --grep=$utf8_e >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success !MINGW 'log --grep searches in log output encoding (latin1)' '
+	cat >expect <<-\EOF &&
+	latin1
+	utf8
+	EOF
+	git log --encoding=ISO-8859-1 --format=%s --grep=$latin1_e >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success !MINGW 'log --grep does not find non-reencoded values (utf8)' '
+	git log --encoding=utf8 --format=%s --grep=$latin1_e >actual &&
+	test_must_be_empty actual
+'
+
+test_expect_success 'log --grep does not find non-reencoded values (latin1)' '
+	git log --encoding=ISO-8859-1 --format=%s --grep=$utf8_e >actual &&
+	test_must_be_empty actual
+'
+
+triggers_undefined_behaviour () {
+	local engine=$1
+
+	case $engine in
+	fixed)
+		if test -n "$have_reg_illseq" &&
+			! test_have_prereq LIBPCRE2
+		then
+			return 0
+		fi
+		;;
+	basic|extended)
+		if test -n "$have_reg_illseq"
+		then
+			return 0
+		fi
+		;;
+	esac
+	return 1
+}
+
+mismatched_git_log () {
+	local pattern=$1
+
+	LC_ALL=$is_IS_locale git log --encoding=ISO-8859-1 --format=%s \
+		--grep=$pattern
+}
+
+for engine in fixed basic extended perl
+do
+	prereq=
+	if test $engine = "perl"
+	then
+		prereq=PCRE
+	fi
+	force_regex=
+	if test $engine != "fixed"
+	then
+		force_regex='.*'
+	fi
+
+	test_expect_success $prereq "config grep.patternType=$engine" "
+		git config grep.patternType $engine
+	"
+
+	test_expect_success GETTEXT_LOCALE,$prereq "log --grep does not find non-reencoded values (latin1 + locale)" "
+		mismatched_git_log '$force_regex$utf8_e' >actual &&
+		test_must_be_empty actual
+	"
+
+	if ! triggers_undefined_behaviour $engine
+	then
+		test_expect_success !MINGW,GETTEXT_LOCALE,$prereq "log --grep searches in log output encoding (latin1 + locale)" "
+			cat >expect <<-\EOF &&
+			latin1
+			utf8
+			EOF
+			mismatched_git_log '$force_regex$latin1_e' >actual &&
+			test_cmp expect actual
+		"
+
+		test_expect_success GETTEXT_LOCALE,$prereq "log --grep does not die on invalid UTF-8 value (latin1 + locale + invalid needle)" "
+			mismatched_git_log '$force_regex$invalid_e' >actual &&
+			test_must_be_empty actual
+		"
+	fi
+done
+
+test_done