Update scripts

tools/check-minimal-versions.sh

@@ -8,13 +8,15 @@
 # Note:
 # - This script modifies Cargo.toml and Cargo.lock while running
 # - This script exits with 1 if there are any unstaged changes on Cargo.toml
-# - This script requires nightly toolchain and cargo-hack
+# - This script requires nightly toolchain and cargo-hack <https://github.com/taiki-e/cargo-hack>
 #
 # Refs: https://github.com/rust-lang/cargo/issues/5657
 
 set -euo pipefail
 IFS=$'\n\t'
 
+cd "$(cd "$(dirname "$0")" && pwd)"/..
+
 error() {
     if [[ -n "${GITHUB_ACTIONS:-}" ]]; then
         echo "::error::$*"
@@ -23,12 +25,10 @@ error() {
     fi
 }
 
-cd "$(cd "$(dirname "${0}")" && pwd)"/..
-
 # Decide Rust toolchain.
 # Nightly is used by default if the `CI` environment variable is unset.
 if [[ "${1:-}" == "+"* ]]; then
-    toolchain="${1}"
+    toolchain="$1"
     shift
 elif [[ -z "${CI:-}" ]]; then
     toolchain="+nightly"
@@ -43,7 +43,7 @@ fi
 # Decide subcommand.
 subcmd="check"
 if [[ "${1:-}" =~ ^(check|test)$ ]]; then
-    subcmd="${1}"
+    subcmd="$1"
     shift
 fi
 

tools/publish.sh

@@ -64,7 +64,6 @@ done
 # https://github.com/taiki-e/parse-changelog
 echo "============== CHANGELOG =============="
 parse-changelog CHANGELOG.md "${version}"
-echo
 echo "======================================="
 
 # Make sure the same release has not been created in the past.