ci: Make scripts in common be dash-compatible

`ulimit` may still be not present: dash and busybox support it, but posh does
not.

ci/common/build.sh

@@ -7,10 +7,10 @@ build_make() {
 }
 
 build_deps() {
-  if [[ "${BUILD_32BIT}" == ON ]]; then
+  if test "x${BUILD_32BIT}" = xON ; then
     DEPS_CMAKE_FLAGS="${DEPS_CMAKE_FLAGS} ${CMAKE_FLAGS_32BIT}"
   fi
-  if [[ "${FUNCTIONALTEST}" == "functionaltest-lua" ]]; then
+  if test "x${FUNCTIONALTEST}" = "xfunctionaltest-lua" ; then
     DEPS_CMAKE_FLAGS="${DEPS_CMAKE_FLAGS} -DUSE_BUNDLED_LUA=ON"
   fi
 
@@ -18,11 +18,10 @@ build_deps() {
 
   # If there is a valid cache and we're not forced to recompile,
   # use cached third-party dependencies.
-  if [[ -f "${CACHE_MARKER}" ]] && [[ "${BUILD_NVIM_DEPS}" != true ]]; then
+  if test -f "${CACHE_MARKER}" && test "x${BUILD_NVIM_DEPS}" != xtrue ; then
-    if [[ "${TRAVIS_OS_NAME}" == osx ]]; then
-      local statcmd="stat -f '%Sm'"
-    else
     local statcmd="stat -c '%y'"
+    if test "x${TRAVIS_OS_NAME}" = xosx ; then
+      statcmd="stat -f '%Sm'"
     fi
     echo "Using third-party dependencies from Travis's cache (last updated: $(${statcmd} "${CACHE_MARKER}"))."
 
@@ -46,10 +45,10 @@ build_deps() {
 }
 
 prepare_build() {
-  if [[ -n "${CLANG_SANITIZER}" ]]; then
+  if test -n "${CLANG_SANITIZER}" ; then
     CMAKE_FLAGS="${CMAKE_FLAGS} -DCLANG_${CLANG_SANITIZER}=ON"
   fi
-  if [[ "${BUILD_32BIT}" == ON ]]; then
+  if test "x${BUILD_32BIT}" = xON ; then
     CMAKE_FLAGS="${CMAKE_FLAGS} ${CMAKE_FLAGS_32BIT}"
   fi
 
@@ -61,24 +60,24 @@ prepare_build() {
 
 build_nvim() {
   echo "Building nvim."
-  if ! top_make nvim; then
+  if ! top_make nvim ; then
     exit 1
   fi
 
-  if [ "$CLANG_SANITIZER" != "TSAN" ]; then
+  if test "x$CLANG_SANITIZER" != xTSAN ; then
     echo "Building libnvim."
-    if ! top_make libnvim; then
+    if ! top_make libnvim ; then
       exit 1
     fi
 
     echo "Building nvim-test."
-    if ! top_make nvim-test; then
+    if ! top_make nvim-test ; then
       exit 1
     fi
   fi
 
   # Invoke nvim to trigger *San early.
-  if ! (bin/nvim --version && bin/nvim -u NONE -e -c ':qall'); then
+  if ! (bin/nvim --version && bin/nvim -u NONE -e -c ':qall') ; then
     asan_check "${LOG_DIR}"
     exit 1
   fi

ci/common/suite.sh

@@ -151,12 +151,12 @@ run_test_wd() {
 }
 
 ended_successfully() {
-  if [[ -f "${FAIL_SUMMARY_FILE}" ]]; then
+  if test -f "${FAIL_SUMMARY_FILE}" ; then
     echo 'Test failed, complete summary:'
     cat "${FAIL_SUMMARY_FILE}"
     return 1
   fi
-  if ! [[ -f "${END_MARKER}" ]] ; then
+  if ! test -f "${END_MARKER}" ; then
     echo 'ended_successfully called before end marker was touched'
     return 1
   fi

ci/common/test.sh

@@ -1,5 +1,5 @@
-source "${CI_DIR}/common/build.sh"
+. "${CI_DIR}/common/build.sh"
-source "${CI_DIR}/common/suite.sh"
+. "${CI_DIR}/common/suite.sh"
 
 print_core() {
   local app="$1"
@@ -9,7 +9,7 @@ print_core() {
     return 0
   fi
   echo "======= Core file $core ======="
-  if [[ "${TRAVIS_OS_NAME}" == osx ]]; then
+  if test "x${TRAVIS_OS_NAME}" = xosx ; then
     lldb -Q -o "bt all" -f "${app}" -c "${core}"
   else
     gdb -n -batch -ex 'thread apply all bt full' "${app}" -c "${core}"
@@ -23,13 +23,13 @@ check_core_dumps() {
     shift
   fi
   local app="${1:-${BUILD_DIR}/bin/nvim}"
-  if [[ "${TRAVIS_OS_NAME}" == osx ]]; then
+  if test "x${TRAVIS_OS_NAME}" = xosx ; then
     local cores="$(find /cores/ -type f -print)"
   else
     local cores="$(find ./ -type f -name 'core.*' -print)"
   fi
 
-  if [ -z "${cores}" ]; then
+  if test -z "${cores}" ; then
     return
   fi
   local core
@@ -61,7 +61,7 @@ check_logs() {
     cat "${log}"
     err=1
   done
-  if [[ -n "${err}" ]]; then
+  if test -n "${err}" ; then
     fail 'logs' E 'Runtime errors detected.'
   fi
 }
@@ -76,7 +76,7 @@ asan_check() {
 
 run_unittests() {(
   enter_suite unittests
-  ulimit -c unlimited
+  ulimit -c unlimited || true
   if ! build_make unittest ; then
     fail 'unittests' F 'Unit tests failed'
   fi
@@ -86,7 +86,7 @@ run_unittests() {(
 
 run_functionaltests() {(
   enter_suite functionaltests
-  ulimit -c unlimited
+  ulimit -c unlimited || true
   if ! build_make ${FUNCTIONALTEST}; then
     fail 'functionaltests' F 'Functional tests failed'
   fi
@@ -98,7 +98,7 @@ run_functionaltests() {(
 
 run_oldtests() {(
   enter_suite oldtests
-  ulimit -c unlimited
+  ulimit -c unlimited || true
   if ! make -C "${TRAVIS_BUILD_DIR}/src/nvim/testdir"; then
     reset
     fail 'oldtests' F 'Legacy tests failed'
@@ -109,6 +109,26 @@ run_oldtests() {(
   exit_suite
 )}
 
+check_runtime_files() {(
+  local test_name="$1" ; shift
+  local message="$1" ; shift
+  local tst="$1" ; shift
+
+  cd runtime
+  for file in $(git ls-files "$@") ; do
+    # Check that test is not trying to work with files with spaces/etc
+    # Prefer failing the build over using more robust construct because files
+    # with IFS are not welcome.
+    if ! test -e "$file" ; then
+      fail "$test_name" E \
+        "It appears that $file is only a part of the file name"
+    fi
+    if ! test "$tst" "$INSTALL_PREFIX/share/nvim/runtime/$file" ; then
+      fail "$test_name" F "$(printf "$message" "$file")"
+    fi
+  done
+)}
+
 install_nvim() {(
   enter_suite 'install_nvim'
   if ! build_make install ; then
@@ -117,34 +137,32 @@ install_nvim() {(
   fi
 
   "${INSTALL_PREFIX}/bin/nvim" --version
-  "${INSTALL_PREFIX}/bin/nvim" -u NONE -e -c ':help' -c ':qall' || {
+  if ! "${INSTALL_PREFIX}/bin/nvim" -u NONE -e -c ':help' -c ':qall' ; then
     echo "Running ':help' in the installed nvim failed."
     echo "Maybe the helptags have not been generated properly."
     fail 'help' F 'Failed running :help'
-  }
-
-  local genvimsynf=syntax/vim/generated.vim
-  # Check that all runtime files were installed
-  for file in doc/tags $genvimsynf $(
-    cd runtime ; git ls-files | grep -e '.vim$' -e '.ps$' -e '.dict$' -e '.py$' -e '.tutor$'
-  ) ; do
-    if ! test -e "${INSTALL_PREFIX}/share/nvim/runtime/$file" ; then
-      fail 'runtime-install' F "It appears that $file is not installed."
   fi
-  done
+
+  # Check that all runtime files were installed
+  check_runtime_files \
+    'runtime-install' \
+    'It appears that %s is not installed.' \
+    -e \
+    '*.vim' '*.ps' '*.dict' '*.py' '*.tutor'
+
+  # Check that some runtime files are installed and are executables
+  check_runtime_files \
+    'not-exe' \
+    'It appears that %s is not installed or is not executable.' \
+    -x \
+    '*.awk' '*.sh' '*.bat'
 
   # Check that generated syntax file has function names, #5060.
+  local genvimsynf=syntax/vim/generated.vim
   local gpat='syn keyword vimFuncName .*eval'
-  if ! grep -q "$gpat" "${INSTALL_PREFIX}/share/nvim/runtime/$genvimsynf"; then
+  if ! grep -q "$gpat" "${INSTALL_PREFIX}/share/nvim/runtime/$genvimsynf" ; then
     fail 'funcnames' F "It appears that $genvimsynf does not contain $gpat."
   fi
 
-  for file in $(
-    cd runtime ; git ls-files | grep -e '.awk$' -e '.sh$' -e '.bat$'
-  ) ; do
-    if ! test -x "${INSTALL_PREFIX}/share/nvim/runtime/$file" ; then
-      fail 'not-exe' F "It appears that $file is not installed or is not executable."
-    fi
-  done
   exit_suite
 )}