From b7418dc8c9da5791acfd81f691833d23b678736c Mon Sep 17 00:00:00 2001
From: James Lamb <jaylamb20@gmail.com>
Date: Fri, 29 Sep 2023 11:00:25 -0500
Subject: [PATCH] [ci] fix sh-compatibility issue in build-cran-package.sh
 (#6118)

---
 build-cran-package.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/build-cran-package.sh b/build-cran-package.sh
index 6558afcf77ad..1c8a5dfbdc48 100755
--- a/build-cran-package.sh
+++ b/build-cran-package.sh
@@ -132,7 +132,7 @@ cd "${TEMP_R_DIR}"
     using_windows_and_r3=$(
         Rscript -e 'cat(.Platform$OS.type == "windows" && R.version[["major"]] < 4)'
     )
-    if [[ ${using_windows_and_r3} == "TRUE" ]]; then
+    if test "${using_windows_and_r3}" = "TRUE"; then
         LGB_CXX_STD="C++11"
     fi
     sed -i.bak -e "s/~~CXXSTD~~/${LGB_CXX_STD}/" DESCRIPTION