[PATCH 07/11] t0027: mark a function as requiring the C locale

From: Johannes Schindelin <redacted>

The `check_warning` function uses regular expressions matching English
text, it therefore won't work reliably with anything but the C locale.

In particular, we won't be able to match the needle 'in' under
GETTEXT_POISON=rot13.

Signed-off-by: Johannes Schindelin <redacted>
---
 t/t0027-auto-crlf.sh | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/t/t0027-auto-crlf.sh b/t/t0027-auto-crlf.sh
index 9fcd56fab37..baa5c6f435b 100755
--- a/t/t0027-auto-crlf.sh
+++ b/t/t0027-auto-crlf.sh

@@ -76,6 +76,9 @@ create_NNO_MIX_files () {
 }
 
 check_warning () {
+	# The `grep` and `sed` below expect the locale to be "C"
+	test_have_prereq C_LOCALE_OUTPUT || return 0
+
 	case "$1" in
 	LF_CRLF) echo "warning: LF will be replaced by CRLF" >"$2".expect ;;
 	CRLF_LF) echo "warning: CRLF will be replaced by LF" >"$2".expect ;;

-- 
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