[ci] make shell scripts stricter

.ci/append_comment.sh

@@ -10,7 +10,7 @@
 #
 # BODY: Text that will be appended to the original comment body.
 
-set -e
+set -e -E -u -o pipefail
 
 if [ -z "$GITHUB_ACTIONS" ]; then
   echo "Must be run inside GitHub Actions CI"

.ci/check_python_dists.sh

@@ -1,7 +1,13 @@
 #!/bin/sh
 
+set -e -E -u
+
 DIST_DIR=${1}
 
+# defaults
+METHOD=${METHOD:-""}
+TASK=${TASK:-""}
+
 echo "checking Python package distributions in '${DIST_DIR}'"
 
 pip install \

.ci/lint-cpp.sh

@@ -1,4 +1,6 @@
-#!/bin/sh
+#!/bin/bash
+
+set -e -E -u -o pipefail
 
 echo "running cpplint"
 cpplint \
@@ -32,9 +34,17 @@ get_omp_pragmas_without_num_threads() {
         'pragma omp parallel' \
     | grep -v ' num_threads'
 }
+
+# 'grep' returns a non-0 exit code if 0 lines were found.
+# Turning off '-e -o pipefail' options here so that bash doesn't
+# consider this a failure and stop execution of the script.
+#
+# ref: https://www.gnu.org/software/grep/manual/html_node/Exit-Status.html
+set +e +o pipefail
 PROBLEMATIC_LINES=$(
     get_omp_pragmas_without_num_threads
 )
+set -e -o pipefail
 if test "${PROBLEMATIC_LINES}" != ""; then
     get_omp_pragmas_without_num_threads
     echo "Found '#pragma omp parallel' not using explicit num_threads() configuration. Fix those."

.ci/lint-python.sh

@@ -1,4 +1,6 @@
-#!/bin/sh
+#!/bin/bash
+
+set -e -E -u -o pipefail
 
 echo "running pre-commit checks"
 pre-commit run --all-files || exit 1

.ci/rerun_workflow.sh

@@ -12,7 +12,7 @@
 #
 # PR_BRANCH: Name of pull request's branch.
 
-set -e
+set -e -E -u -o pipefail
 
 if [ -z "$GITHUB_ACTIONS" ]; then
   echo "Must be run inside GitHub Actions CI"

.ci/set_commit_status.sh

@@ -14,7 +14,7 @@
 #
 # SHA: SHA of a commit to set a status on.
 
-set -e
+set -e -E -u -o pipefail
 
 if [ -z "$GITHUB_ACTIONS" ]; then
   echo "Must be run inside GitHub Actions CI"

.ci/setup.sh

@@ -1,6 +1,11 @@
 #!/bin/bash
 
-set -e -E -o pipefail
+set -e -E -u -o pipefail
+
+# defaults
+AZURE=${AZURE:-"false"}
+IN_UBUNTU_BASE_CONTAINER=${IN_UBUNTU_BASE_CONTAINER:-"false"}
+SETUP_CONDA=${SETUP_CONDA:-"true"}
 
 ARCH=$(uname -m)
 

.ci/test-python-oldest.sh

@@ -1,5 +1,7 @@
 #!/bin/bash
 
+set -e -E -u -o pipefail
+
 # oldest versions of dependencies published after
 # minimum supported Python version's first release
 #

.ci/test.sh

@@ -1,6 +1,12 @@
 #!/bin/bash
 
-set -e -E -o pipefail
+set -e -E -o -u pipefail
+
+# defaults
+IN_UBUNTU_BASE_CONTAINER=${IN_UBUNTU_BASE_CONTAINER:-"false"}
+METHOD=${METHOD:-""}
+PRODUCES_ARTIFACTS=${PRODUCES_ARTIFACTS:-"false"}
+SANITIZERS=${SANITIZERS:-""}
 
 ARCH=$(uname -m)
 
@@ -83,11 +89,11 @@ if [[ $TASK == "lint" ]]; then
         'r-lintr>=3.1'
     source activate $CONDA_ENV
     echo "Linting Python code"
-    sh ${BUILD_DIRECTORY}/.ci/lint-python.sh || exit 1
+    bash ${BUILD_DIRECTORY}/.ci/lint-python.sh || exit 1
     echo "Linting R code"
     Rscript ${BUILD_DIRECTORY}/.ci/lint_r_code.R ${BUILD_DIRECTORY} || exit 1
     echo "Linting C++ code"
-    sh ${BUILD_DIRECTORY}/.ci/lint-cpp.sh || exit 1
+    bash ${BUILD_DIRECTORY}/.ci/lint-cpp.sh || exit 1
     exit 0
 fi
 

.ci/test_r_package.sh

@@ -1,6 +1,10 @@
 #!/bin/bash
 
+set -e -E -u -o pipefail
+
+# defaults
 ARCH=$(uname -m)
+INSTALL_CMAKE_FROM_RELEASES=${INSTALL_CMAKE_FROM_RELEASES:-"false"}
 
 # set up R environment
 CRAN_MIRROR="https://cran.rstudio.com"
@@ -212,6 +216,9 @@ if [[ $check_succeeded == "no" ]]; then
     exit 1
 fi
 
+# ensure 'grep --count' doesn't cause failures
+set +e
+
 used_correct_r_version=$(
     cat $LOG_FILE_NAME \
     | grep --count "using R version ${R_VERSION}"

.ci/test_r_package_valgrind.sh

@@ -1,5 +1,7 @@
 #!/bin/bash
 
+set -e -E -u -o pipefail
+
 RDscriptvalgrind -e "install.packages(c('R6', 'data.table', 'jsonlite', 'Matrix', 'RhpcBLASctl', 'testthat'), repos = 'https://cran.rstudio.com')" || exit 1
 sh build-cran-package.sh \
   --r-executable=RDvalgrind \

.ci/trigger_dispatch_run.sh

@@ -12,7 +12,7 @@
 #
 # DISPATCH_NAME: Name of a dispatch to be triggered.
 
-set -e
+set -e -E -u -o pipefail
 
 if [ -z "$GITHUB_ACTIONS" ]; then
   echo "Must be run inside GitHub Actions CI"

.github/workflows/r_package.yml

@@ -134,15 +134,6 @@ jobs:
             r_version: 4.3
             build_type: cran
             container: null
-          ################
-          # Other checks #
-          ################
-          - os: ubuntu-latest
-            task: r-rchk
-            compiler: gcc
-            r_version: 4.3
-            build_type: cran
-            container: 'ubuntu:22.04'
     steps:
       - name: Prevent conversion of line endings on Windows
         if: startsWith(matrix.os, 'windows')

R-package/recreate-configure.sh

@@ -1,5 +1,7 @@
 #!/bin/bash
 
+set -e -E -u -o pipefail
+
 # recreates 'configure' from 'configure.ac'
 # this script should run on Ubuntu 22.04
 AUTOCONF_VERSION=$(cat R-package/AUTOCONF_UBUNTU_VERSION)

build-cran-package.sh

@@ -27,7 +27,7 @@
 #     # skip vignette building
 #     sh build-cran-package.sh --no-build-vignettes
 
-set -e
+set -e -E -u
 
 # Default values of arguments
 BUILD_VIGNETTES=true

build-python.sh

@@ -62,7 +62,7 @@
 #                                   Install into user-specific instead of global site-packages directory.
 #                                   Only used with 'install' command.
 
-set -e -u
+set -e -E -u
 
 echo "building lightgbm"
 

docs/build-docs.sh

@@ -1,5 +1,7 @@
 #!/bin/bash
 
+set -e -E -u -o pipefail
+
 rm -f ./_FIRST_RUN.flag
 
 export PATH="${CONDA}/bin:${PATH}"