fix(shell): use [[ instead of [ for conditional tests

Replace single brackets with double brackets in bash conditional
expressions across 14 files (28 changes). All scripts use bash
shebangs so [[ is safe everywhere (SonarCloud rule shelldre:S7688).

scripts/install-cheat-purebashbible.sh

@@ -24,7 +24,7 @@ check_required_tools()
 
 clone_or_update_repo()
 {
-  if [ ! -d "$PBB_TEMP_DIR/.git" ]; then
+  if [[ ! -d "$PBB_TEMP_DIR/.git" ]]; then
     msg_run "Starting to clone $PBB_GIT"
     git clone --depth 1 --single-branch -q "$PBB_GIT" "$PBB_TEMP_DIR" \
       && msg_yay "Cloned $PBB_GIT"
@@ -41,7 +41,7 @@ prepare_cheat_dest()
   local cheat_dest
   cheat_dest="$(cheat -d | grep pure-bash-bible | head -1 | awk '{print $2}')"
 
-  if [ ! -d "$cheat_dest" ]; then
+  if [[ ! -d "$cheat_dest" ]]; then
     mkdir -p "$cheat_dest"
   fi
 
@@ -83,7 +83,7 @@ process_chapters()
     LC_ALL=C perl -pi.bak -e 's/\<\!-- CHAPTER END --\>//' "$cheat_file"
     rm "$cheat_file.bak"
 
-    if [ '---' != "$(head -1 < "$cheat_file")" ]; then
+    if [[ '---' != "$(head -1 < "$cheat_file")" ]]; then
       local metadata
       metadata="$PBB_SYNTAX\n$PBB_TAGS\n$PBB_SOURCE\n"
       printf '%s\n%b%s\n%s' "---" "$metadata" "---" "$(cat "$cheat_file")" > "$cheat_file"

scripts/install-composer.sh

@@ -14,7 +14,7 @@ EXPECTED_CHECKSUM="$(php -r 'copy("https://composer.github.io/installer.sig", "p
 php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
 ACTUAL_CHECKSUM="$(php -r "echo hash_file('sha384', 'composer-setup.php');")"
 
-if [ "$EXPECTED_CHECKSUM" != "$ACTUAL_CHECKSUM" ]; then
+if [[ "$EXPECTED_CHECKSUM" != "$ACTUAL_CHECKSUM" ]]; then
   echo >&2 'ERROR: Invalid installer checksum'
   rm composer-setup.php
   exit 1
@@ -23,7 +23,7 @@ fi
 php composer-setup.php --quiet
 RESULT=$?
 rm composer-setup.php
-if [ $RESULT -eq 0 ]; then
+if [[ $RESULT -eq 0 ]]; then
   mv composer.phar ~/.local/bin/composer
 fi
 exit $RESULT

scripts/install-fonts.sh

@@ -18,7 +18,7 @@ fonts=(
 # Function to clone or update the NerdFonts repository
 clone_or_update_repo()
 {
-  if [ ! -d "$TMP_PATH" ]; then
+  if [[ ! -d "$TMP_PATH" ]]; then
     git clone --quiet --filter=blob:none --sparse --depth=1 "$GIT_REPO" "$TMP_PATH"
   fi
 

scripts/install-git-crypt.sh

@@ -15,7 +15,7 @@ if ! command -v git-crypt &> /dev/null; then
   BUILD_PATH="$(mktemp -d)"
   trap 'rm -rf "$BUILD_PATH"' EXIT
 
-  if [ ! -f "$CHECK_PATH" ]; then
+  if [[ ! -f "$CHECK_PATH" ]]; then
     git clone --depth 1 "$REPO_URL" "$BUILD_PATH" || { msgr err "Failed to clone $REPO_URL"; exit 1; }
     cd "$BUILD_PATH" || { msgr err "$BUILD_PATH not found"; exit 1; }
     make && make install PREFIX="$HOME/.local"

scripts/install-macos-defaults.sh

@@ -5,7 +5,7 @@ set -uo pipefail
 # This script contains large portions from following scripts:
 # - https://github.com/freekmurze/dotfiles/blob/main/macos/set-defaults.sh
 
-[ "$(uname)" != "Darwin" ] && echo "Not a macOS system" && exit 0
+[[ "$(uname)" != "Darwin" ]] && echo "Not a macOS system" && exit 0
 
 # shellcheck source=shared.sh
 source "$DOTFILES/config/shared.sh"

scripts/install-ntfy.sh

@@ -43,7 +43,7 @@ install_ntfy()
   mkdir -p ~/.config/ntfy
 
   # Copy config only if it does not exist
-  if [ ! -f "$HOME/.config/ntfy/client.yml" ]; then
+  if [[ ! -f "$HOME/.config/ntfy/client.yml" ]]; then
     cp "$tmpdir/${NTFY_DIR}/client/client.yml" ~/.config/ntfy/client.yml
   fi
 }

scripts/install-xcode-cli-tools.sh

@@ -5,7 +5,7 @@ set -euo pipefail
 #
 
 # Check if the script is running on macOS
-if [ "$(uname)" != "Darwin" ]; then
+if [[ "$(uname)" != "Darwin" ]]; then
   msgr warn "Not a macOS system"
   exit 0
 fi
@@ -40,7 +40,7 @@ prompt_xcode_install()
       'tell app "System Events" to display dialog "Please click install when Command Line Developer Tools appears"'
   )"
 
-  if [ "$XCODE_MESSAGE" = "button returned:OK" ]; then
+  if [[ "$XCODE_MESSAGE" = "button returned:OK" ]]; then
     xcode-select --install
   else
     msgr warn "You have cancelled the installation, please rerun the installer."
@@ -53,13 +53,13 @@ main()
 {
   keep_alive_sudo
 
-  if [ -x "$XCODE_SWIFT_PATH" ]; then
+  if [[ -x "$XCODE_SWIFT_PATH" ]]; then
     msgr run "You have swift from xcode-select. Continuing..."
   else
     prompt_xcode_install
   fi
 
-  until [ -f "$XCODE_SWIFT_PATH" ]; do
+  until [[ -f "$XCODE_SWIFT_PATH" ]]; do
     echo -n "."
     sleep 1
   done

scripts/install-z.sh

@@ -14,7 +14,7 @@ clone_z_repo()
   local git_path=$1
   local bin_path=$2
 
-  if [ ! -d "$bin_path" ]; then
+  if [[ ! -d "$bin_path" ]]; then
     git clone "$git_path" "$bin_path"
     msgr run_done "z installed at $bin_path"
   else

scripts/shared.sh

@@ -5,7 +5,7 @@
 : "${VERBOSE:=0}"
 
 # Source the main shared config if not already loaded
-if [ -z "${SHARED_SCRIPTS_SOURCED:-}" ]; then
+if [[ -z "${SHARED_SCRIPTS_SOURCED:-}" ]]; then
   source "${DOTFILES}/config/shared.sh"
   export SHARED_SCRIPTS_SOURCED=1
 fi