Release 2.6.13

Co-authored-by: Taiki Endo <te316e89@gmail.com>

.cspell.json

@@ -26,7 +26,7 @@
   ],
   "ignoreRegExpList": [
     // Copyright notice
-    "Copyright ((\\(c\\)|\\(C\\)|©) )?.*",
+    "Copyright .*",
     // GHA actions/workflows
     "uses: .+@",
     // GHA context (repo name, owner name, etc.)
@@ -35,6 +35,8 @@
     "( |\\[)@[\\w_-]+",
     // Git config username
     "git config user.name .*",
+    // Username in todo comment
+    "(TODO|FIXME)\\([\\w_., -]+\\)",
     // Cargo.toml authors
     "authors *= *\\[.*\\]",
     "\".* <[\\w_.+-]+@[\\w.-]+>\""

.github/.cspell/organization-dictionary.txt

@@ -29,6 +29,7 @@ Zmiri
 
 // Rust target triple
 aarch
+amdgpu
 androideabi
 armeb
 armebv
@@ -61,10 +62,12 @@ musleabi
 musleabihf
 newlibeabihf
 nvptx
+ohos
 openwrt
 riscv
 softfloat
 sparcv
+spirv
 thumbeb
 thumbebv
 thumbv
@@ -85,19 +88,23 @@ acqrel
 alloc
 bools
 builtins
+bytecount
 canonicalize
+concat
 consts
 ctypes
 dealloc
 deque
 docsrs
 doctest
+doctests
 hasher
 impls
 inlateout
 intrinsics
 lateout
 mclass
+memcpy
 msrv
 nand
 nomem
@@ -110,6 +117,7 @@ rclass
 repr
 rfind
 rfold
+rposition
 rsplit
 rustlib
 seqcst
@@ -124,12 +132,17 @@ unsized
 upcastable
 
 // Other
+armel
+armhf
 binutils
 connrefused
 cygwin
 dpkg
+elif
 endianness
+esac
 euxo
+gsub
 msys
 noninteractive
 noprofile
@@ -139,7 +152,9 @@ objdump
 pipefail
 powerset
 proto
+ranlib
 readelf
+shellcheckrc
 SIGABRT
 SIGILL
 SIGINT

.github/.cspell/project-dictionary.txt

@@ -1,5 +1,4 @@
 binstall
-bytecodealliance
 coreutils
 distro
 doas
@@ -7,21 +6,15 @@ dprint
 enablerepo
 epel
 grcov
-jfrimmel
-koalaman
 libc
 linkcheck
 mdbook
 microdnf
-mvdan
 nextest
-protobuf
 protoc
-protocolbuffers
 pwsh
 quickinstall
 rockylinux
-rustwasm
 shellcheck
 shfmt
 udeps

CHANGELOG.md

@@ -10,6 +10,38 @@ Note: In this file, do not use the hard wrap in the middle of a sentence for com
 
 ## [Unreleased]
 
+## [2.6.13] - 2023-04-13
+
+- Update `protoc@latest` to 3.22.3.
+
+## [2.6.12] - 2023-04-12
+
+- Update `cargo-deny@latest` to 0.13.9.
+
+## [2.6.11] - 2023-04-11
+
+- Update `dprint@latest` to 0.35.4.
+
+## [2.6.10] - 2023-04-07
+
+- Update `cargo-deny@latest` to 0.13.8.
+
+## [2.6.9] - 2023-04-05
+
+- Update `cargo-llvm-cov@latest` to 0.5.14.
+
+## [2.6.8] - 2023-04-05
+
+- Update `cargo-tarpaulin@latest` to 0.25.2.
+
+## [2.6.7] - 2023-04-04
+
+- Update `cargo-llvm-cov@latest` to 0.5.13.
+
+## [2.6.6] - 2023-04-02
+
+- Update `cargo-llvm-cov@latest` to 0.5.12.
+
 ## [2.6.5] - 2023-03-25
 
 - Update `cargo-binstall@latest` to 0.22.0.
@@ -699,7 +731,15 @@ Note: This release is considered a breaking change because installing on version
 
 Initial release
 
-[Unreleased]: https://github.com/taiki-e/install-action/compare/v2.6.5...HEAD
+[Unreleased]: https://github.com/taiki-e/install-action/compare/v2.6.13...HEAD
+[2.6.13]: https://github.com/taiki-e/install-action/compare/v2.6.12...v2.6.13
+[2.6.12]: https://github.com/taiki-e/install-action/compare/v2.6.11...v2.6.12
+[2.6.11]: https://github.com/taiki-e/install-action/compare/v2.6.10...v2.6.11
+[2.6.10]: https://github.com/taiki-e/install-action/compare/v2.6.9...v2.6.10
+[2.6.9]: https://github.com/taiki-e/install-action/compare/v2.6.8...v2.6.9
+[2.6.8]: https://github.com/taiki-e/install-action/compare/v2.6.7...v2.6.8
+[2.6.7]: https://github.com/taiki-e/install-action/compare/v2.6.6...v2.6.7
+[2.6.6]: https://github.com/taiki-e/install-action/compare/v2.6.5...v2.6.6
 [2.6.5]: https://github.com/taiki-e/install-action/compare/v2.6.4...v2.6.5
 [2.6.4]: https://github.com/taiki-e/install-action/compare/v2.6.3...v2.6.4
 [2.6.3]: https://github.com/taiki-e/install-action/compare/v2.6.2...v2.6.3

manifests/cargo-deny.json

@@ -18,10 +18,38 @@
     }
   },
   "latest": {
-    "version": "0.13.7"
+    "version": "0.13.9"
   },
   "0.13": {
-    "version": "0.13.7"
+    "version": "0.13.9"
+  },
+  "0.13.9": {
+    "x86_64_linux_musl": {
+      "checksum": "77f6b3feab12afc82638cd4c6197c983d249d1afa4180a6b9c933efbf8bff427"
+    },
+    "x86_64_macos": {
+      "checksum": "7b790f7e15dc6bb79dc0a737310f62fc7a4653749e40ec4fa7419ee627a014ed"
+    },
+    "x86_64_windows": {
+      "checksum": "6f6a69d1dbabf98a1d826dd2dbc0bbfd378336ec891b3e7fd8c570744ea6efa3"
+    },
+    "aarch64_macos": {
+      "checksum": "7d4cc49030262296c96076519deefc740e70fbc338ccd9179d4bc9d3be373512"
+    }
+  },
+  "0.13.8": {
+    "x86_64_linux_musl": {
+      "checksum": "95b2b7eacc1e93b918969e8d9f25dad49ce079511401308b548f5fceeafeb896"
+    },
+    "x86_64_macos": {
+      "checksum": "950f36ddbb08c0686305f97196b450a99efd3bbea3553746b4f1b9942a5ab2b7"
+    },
+    "x86_64_windows": {
+      "checksum": "5cae60df4ab5a9c949a59f56cf101562b7a962fb2750b5e6aeb47e0d8799e962"
+    },
+    "aarch64_macos": {
+      "checksum": "6eeedd852be234c5b27359e7ce6c7da665511afb5d643c7ce8db660e08ca7bc1"
+    }
   },
   "0.13.7": {
     "x86_64_linux_musl": {

manifests/cargo-llvm-cov.json

@@ -17,10 +17,61 @@
     }
   },
   "latest": {
-    "version": "0.5.11"
+    "version": "0.5.14"
   },
   "0.5": {
-    "version": "0.5.11"
+    "version": "0.5.14"
+  },
+  "0.5.14": {
+    "x86_64_linux_musl": {
+      "checksum": "688e56f78611f7866842f5b86e27672225b28c8a536c75d6c0a3fd67082474ea"
+    },
+    "x86_64_macos": {
+      "checksum": "8d4a93175d5ba0710a46ccab007444cea4c53406b4c0b6c6ae6916d1192ac333"
+    },
+    "x86_64_windows": {
+      "checksum": "5773b119db63bbbcb975ecd3e0c71ae548506d85312248d6d3e94758cf88bba6"
+    },
+    "aarch64_linux_musl": {
+      "checksum": "61b22ff22d95ca6af9c668c780fe2a23a519a44d1fab3de01adadfbb36cea54d"
+    },
+    "aarch64_macos": {
+      "checksum": "f98c5d4bc2f7b67328a82028bb78f0a67436ae81a4e2a7911fd4f18f572c434b"
+    }
+  },
+  "0.5.13": {
+    "x86_64_linux_musl": {
+      "checksum": "e57875cba95527149d15d7f9c66b9d624d8154040f19aedbca96e2c6b7687ffb"
+    },
+    "x86_64_macos": {
+      "checksum": "f694bcaf714f352b76182b0aeec9626ca5280ceca275f949caa762a561030350"
+    },
+    "x86_64_windows": {
+      "checksum": "642046071c3c221748a3a6a08b5c7d71d7644928d4d7707fa30b38da8357f074"
+    },
+    "aarch64_linux_musl": {
+      "checksum": "d9173b2aae99f29276cd7d84ffdea9eb29f8831acd3f9d9de1c2af4366d917df"
+    },
+    "aarch64_macos": {
+      "checksum": "b9bb4d03065c4d7e52ed4148d71d36a4c890dee37108addfa9ba19771e46fa1d"
+    }
+  },
+  "0.5.12": {
+    "x86_64_linux_musl": {
+      "checksum": "998b1d9e630295459743fe7051a7e3d04e82836456171493eb5983dde710b07e"
+    },
+    "x86_64_macos": {
+      "checksum": "77faedad91c300b51d2d40040a6c61903a555da319047983ec56c81598cbea9b"
+    },
+    "x86_64_windows": {
+      "checksum": "5d0d3df674a431272f75e77dd2c07fdbc5ee83ade11c0839bbd0fdae35480351"
+    },
+    "aarch64_linux_musl": {
+      "checksum": "87c54166055d2d486620ceb27440442d34d71b364fdd6f6da57a210ae5f75e33"
+    },
+    "aarch64_macos": {
+      "checksum": "05c8f8e2210a3218b167dce33477785a0bc0c718fac7b15d2f4a428791234f03"
+    }
   },
   "0.5.11": {
     "x86_64_linux_musl": {

manifests/cargo-tarpaulin.json

@@ -17,10 +17,27 @@
     }
   },
   "latest": {
-    "version": "0.25.1"
+    "version": "0.25.2"
   },
   "0.25": {
-    "version": "0.25.1"
+    "version": "0.25.2"
+  },
+  "0.25.2": {
+    "x86_64_linux_musl": {
+      "checksum": "89f0f28baa818f445336da35c204206544b5e1160892ca0d5f50fe034abff771"
+    },
+    "x86_64_macos": {
+      "checksum": "fac48ad01a87435b35a0d04dbb5452929c72e3e28633ab0fb5740a50d113bf64"
+    },
+    "x86_64_windows": {
+      "checksum": "36cf0c7fcf1c1d589720e7409673535e46d734f9abf89ff179c964dbf24f56cc"
+    },
+    "aarch64_linux_musl": {
+      "checksum": "2600c6a6e8f6cdaf374fa492284ade31c4582f40f9c5ede1f726b743e144f9b6"
+    },
+    "aarch64_macos": {
+      "checksum": "3f615f38c18c32d10fdf85b73e5c5ee05c0308566d00d0b117c10175f659c504"
+    }
   },
   "0.25.1": {
     "x86_64_linux_musl": {

manifests/dprint.json

@@ -20,10 +20,27 @@
     }
   },
   "latest": {
-    "version": "0.35.3"
+    "version": "0.35.4"
   },
   "0.35": {
-    "version": "0.35.3"
+    "version": "0.35.4"
+  },
+  "0.35.4": {
+    "x86_64_linux_musl": {
+      "checksum": "a061268da99878970993d988b42de6324aea4cdce437fc1ca46ec51add4162dd"
+    },
+    "x86_64_macos": {
+      "checksum": "179234c542ffc1f26e2dffc62884809d1fd0e781b49f95b938410b1b6450c20c"
+    },
+    "x86_64_windows": {
+      "checksum": "50ac0366c5c20ace37fa2bef11f8826a5f68c1a28412b7751d89e38d7ce6c709"
+    },
+    "aarch64_linux_gnu": {
+      "checksum": "1a810a4c28934b6e281686ae53fe0e1eba973caec245df8004d4452ffc61d306"
+    },
+    "aarch64_macos": {
+      "checksum": "be2a5b698a0a4837a76a7626288a16e1c1f4153463f630845f9def43057f79e2"
+    }
   },
   "0.35.3": {
     "x86_64_linux_musl": {

manifests/protoc.json

@@ -1,13 +1,35 @@
 {
   "template": null,
   "latest": {
-    "version": "3.22.2"
+    "version": "3.22.3"
   },
   "3": {
-    "version": "3.22.2"
+    "version": "3.22.3"
   },
   "3.22": {
-    "version": "3.22.2"
+    "version": "3.22.3"
+  },
+  "3.22.3": {
+    "x86_64_linux_gnu": {
+      "url": "https://github.com/protocolbuffers/protobuf/releases/download/v22.3/protoc-22.3-linux-x86_64.zip",
+      "checksum": "0f8070d762eb8a2f5a13a47713a553f989f9d9b556e7e3ebfa2bd6464e2ecaeb"
+    },
+    "x86_64_macos": {
+      "url": "https://github.com/protocolbuffers/protobuf/releases/download/v22.3/protoc-22.3-osx-x86_64.zip",
+      "checksum": "d644a65064a97fa3ed033a4a2314ab35816abbd9aed052f9b1b3374d2deaaae4"
+    },
+    "x86_64_windows": {
+      "url": "https://github.com/protocolbuffers/protobuf/releases/download/v22.3/protoc-22.3-win64.zip",
+      "checksum": "fa7fe21bf6e204a4e1eec3ffee1d53c84e216289bc4762e072258e5bca113a3c"
+    },
+    "aarch64_linux_gnu": {
+      "url": "https://github.com/protocolbuffers/protobuf/releases/download/v22.3/protoc-22.3-linux-aarch_64.zip",
+      "checksum": "c6068d9d151c39723bc7db920759b55737a770b0c2ec544dd0197d4078d7a956"
+    },
+    "aarch64_macos": {
+      "url": "https://github.com/protocolbuffers/protobuf/releases/download/v22.3/protoc-22.3-osx-aarch_64.zip",
+      "checksum": "79cc15d1b528061ea0a818b0abcf3be1e0bdcb063a0cc999af27974cccdc5cce"
+    }
   },
   "3.22.2": {
     "x86_64_linux_gnu": {

tools/tidy.sh

@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+# SPDX-License-Identifier: Apache-2.0 OR MIT
 # shellcheck disable=SC2046
 set -euo pipefail
 IFS=$'\n\t'
@@ -33,6 +34,9 @@ check_diff() {
         fi
     fi
 }
+info() {
+    echo >&2 "info: $*"
+}
 warn() {
     if [[ -n "${GITHUB_ACTIONS:-}" ]]; then
         echo "::warning::$*"
@@ -41,6 +45,14 @@ warn() {
     fi
     should_fail=1
 }
+error() {
+    if [[ -n "${GITHUB_ACTIONS:-}" ]]; then
+        echo "::error::$*"
+    else
+        echo >&2 "error: $*"
+    fi
+    should_fail=1
+}
 
 if [[ $# -gt 0 ]]; then
     cat <<EOF
@@ -52,6 +64,7 @@ fi
 
 # Rust (if exists)
 if [[ -n "$(git ls-files '*.rs')" ]]; then
+    info "checking Rust code style"
     if type -P rustup &>/dev/null; then
         # `cargo fmt` cannot recognize files not included in the current workspace and modules
         # defined inside macros, so run rustfmt directly.
@@ -70,10 +83,40 @@ if [[ -n "$(git ls-files '*.rs')" ]]; then
     else
         warn "'rustup' is not installed"
     fi
+    cast_without_turbofish=$(grep -n -E '\.cast\(\)' $(git ls-files '*.rs') || true)
+    if [[ -n "${cast_without_turbofish}" ]]; then
+        error "please replace \`.cast()\` with \`.cast::<type_name>()\`:"
+        echo "${cast_without_turbofish}"
+    fi
+    first='1'
+    for readme in $(git ls-files '*README.md'); do
+        if ! grep -q '^<!-- tidy:crate-doc:start -->' "${readme}"; then
+            continue
+        fi
+        lib="$(dirname "${readme}")/src/lib.rs"
+        if [[ -n "${first}" ]]; then
+            first=''
+            info "checking readme and crate-level doc are synchronized"
+        fi
+        if ! grep -q '^<!-- tidy:crate-doc:end -->' "${readme}"; then
+            bail "missing '<!-- tidy:crate-doc:end -->' comment in ${readme}"
+        fi
+        if ! grep -q '^<!-- tidy:crate-doc:start -->' "${lib}"; then
+            bail "missing '<!-- tidy:crate-doc:start -->' comment in ${lib}"
+        fi
+        if ! grep -q '^<!-- tidy:crate-doc:end -->' "${lib}"; then
+            bail "missing '<!-- tidy:crate-doc:end -->' comment in ${lib}"
+        fi
+        new=$(tr <"${readme}" '\n' '\a' | grep -o '<!-- tidy:crate-doc:start -->.*<!-- tidy:crate-doc:end -->' | sed 's/\&/\\\&/g; s/\\/\\\\/g')
+        new=$(tr <"${lib}" '\n' '\a' | awk -v new="${new}" 'gsub("<!-- tidy:crate-doc:start -->.*<!-- tidy:crate-doc:end -->",new)' | tr '\a' '\n')
+        echo "${new}" >"${lib}"
+        check_diff "${lib}"
+    done
 fi
 
 # C/C++ (if exists)
 if [[ -n "$(git ls-files '*.c')$(git ls-files '*.cpp')" ]]; then
+    info "checking C/C++ code style"
     if [[ ! -e .clang-format ]]; then
         warn "could not fount .clang-format in the repository root"
     fi
@@ -88,6 +131,7 @@ fi
 
 # YAML/JavaScript/JSON (if exists)
 if [[ -n "$(git ls-files '*.yml')$(git ls-files '*.js')$(git ls-files '*.json')" ]]; then
+    info "checking YAML/JavaScript/JSON code style"
     if type -P npm &>/dev/null; then
         echo "+ npx prettier -l -w \$(git ls-files '*.yml') \$(git ls-files '*.js') \$(git ls-files '*.json')"
         npx prettier -l -w $(git ls-files '*.yml') $(git ls-files '*.js') $(git ls-files '*.json')
@@ -97,14 +141,15 @@ if [[ -n "$(git ls-files '*.yml')$(git ls-files '*.js')$(git ls-files '*.json')"
     fi
     # Check GitHub workflows.
     if [[ -d .github/workflows ]]; then
+        info "checking GitHub workflows"
         if type -P jq &>/dev/null && type -P yq &>/dev/null; then
             for workflow in .github/workflows/*.yml; do
                 # The top-level permissions must be weak as they are referenced by all jobs.
                 permissions=$(yq '.permissions' "${workflow}" | jq -c)
                 case "${permissions}" in
                     '{"contents":"read"}' | '{"contents":"none"}' | '{}') ;;
-                    null) warn "${workflow}: top level permissions not found; it must be 'contents: read' or weaker permissions" ;;
-                    *) warn "${workflow}: only 'contents: read' and weaker permissions are allowed at top level; if you want to use stronger permissions, please set job-level permissions" ;;
+                    null) error "${workflow}: top level permissions not found; it must be 'contents: read' or weaker permissions" ;;
+                    *) error "${workflow}: only 'contents: read' and weaker permissions are allowed at top level; if you want to use stronger permissions, please set job-level permissions" ;;
                 esac
                 # Make sure the 'needs' section is not out of date.
                 if grep -q '# tidy:needs' "${workflow}" && ! grep -Eq '# *needs: \[' "${workflow}"; then
@@ -117,7 +162,7 @@ if [[ -n "$(git ls-files '*.yml')$(git ls-files '*.js')$(git ls-files '*.json')"
                         printf -v jobs '%s, ' "${jobs_actual[@]}"
                         sed -i "s/needs: \[.*\] # tidy:needs/needs: [${jobs%, }] # tidy:needs/" "${workflow}"
                         check_diff "${workflow}"
-                        warn "${workflow}: please update 'needs' section in 'ci-success' job"
+                        error "${workflow}: please update 'needs' section in 'ci-success' job"
                     fi
                 fi
             done
@@ -127,11 +172,12 @@ if [[ -n "$(git ls-files '*.yml')$(git ls-files '*.js')$(git ls-files '*.json')"
     fi
 fi
 if [[ -n "$(git ls-files '*.yaml')" ]]; then
-    warn "please use '.yml' instead of '.yaml' for consistency"
+    error "please use '.yml' instead of '.yaml' for consistency"
     git ls-files '*.yaml'
 fi
 
 # Shell scripts
+info "checking Shell scripts"
 if type -P shfmt &>/dev/null; then
     echo "+ shfmt -l -w \$(git ls-files '*.sh')"
     shfmt -l -w $(git ls-files '*.sh')
@@ -157,8 +203,11 @@ fi
 
 # Spell check (if config exists)
 if [[ -f .cspell.json ]]; then
+    info "spell checking"
     if type -P npm &>/dev/null; then
+        has_rust=''
         if [[ -n "$(git ls-files '*Cargo.toml')" ]]; then
+            has_rust='1'
             dependencies=''
             for manifest_path in $(git ls-files '*Cargo.toml'); do
                 if [[ "${manifest_path}" != "Cargo.toml" ]] && ! grep -Eq '\[workspace\]' "${manifest_path}"; then
@@ -166,24 +215,27 @@ if [[ -f .cspell.json ]]; then
                 fi
                 metadata=$(cargo metadata --format-version=1 --all-features --no-deps --manifest-path "${manifest_path}")
                 for id in $(jq <<<"${metadata}" '.workspace_members[]'); do
-                    dependencies+=$'\n'
-                    dependencies+=$(jq <<<"${metadata}" ".packages[] | select(.id == ${id})" | jq -r '.dependencies[].name')
+                    dependencies+="$(jq <<<"${metadata}" ".packages[] | select(.id == ${id})" | jq -r '.dependencies[].name')"$'\n'
                 done
             done
             # shellcheck disable=SC2001
             dependencies=$(sed <<<"${dependencies}" 's/[0-9_-]/\n/g' | LC_ALL=C sort -f -u)
-            config_old=$(<.cspell.json)
-            config_new=$(grep <<<"${config_old}" -v ' *//' | jq 'del(.dictionaries[] | select(index("organization-dictionary") | not))' | jq 'del(.dictionaryDefinitions[] | select(.name == "organization-dictionary" | not))')
-            echo "${config_new}" >.cspell.json
-            words=$(npx <<<"${dependencies}" cspell stdin --no-progress --no-summary --words-only --unique || true)
-            echo "${config_old}" >.cspell.json
         fi
+        config_old=$(<.cspell.json)
+        config_new=$(grep <<<"${config_old}" -v ' *//' | jq 'del(.dictionaries[] | select(index("organization-dictionary") | not))' | jq 'del(.dictionaryDefinitions[] | select(.name == "organization-dictionary" | not))')
+        echo "${config_new}" >.cspell.json
+        if [[ -n "${has_rust}" ]]; then
+            dependencies_words=$(npx <<<"${dependencies}" cspell stdin --no-progress --no-summary --words-only --unique || true)
+        fi
+        all_words=$(npx cspell --no-progress --no-summary --words-only --unique $(git ls-files | (grep -v '\.github/\.cspell/project-dictionary\.txt' || true)) || true)
+        # TODO: handle SIGINT
+        echo "${config_old}" >.cspell.json
         cat >.github/.cspell/rust-dependencies.txt <<EOF
 // This file is @generated by $(basename "$0").
 // It is not intended for manual editing.
 EOF
-        if [[ -n "${words:-}" ]]; then
-            echo $'\n'"${words}" >>.github/.cspell/rust-dependencies.txt
+        if [[ -n "${dependencies_words:-}" ]]; then
+            echo $'\n'"${dependencies_words}" >>.github/.cspell/rust-dependencies.txt
         fi
         check_diff .github/.cspell/rust-dependencies.txt
         if ! grep -Eq "^\.github/\.cspell/rust-dependencies.txt linguist-generated" .gitattributes; then
@@ -191,20 +243,37 @@ EOF
         fi
 
         echo "+ npx cspell --no-progress --no-summary \$(git ls-files)"
-        npx cspell --no-progress --no-summary $(git ls-files)
+        if ! npx cspell --no-progress --no-summary $(git ls-files); then
+            error "spellcheck failed: please fix uses of above words or add to .github/.cspell/project-dictionary.txt if correct"
+        fi
 
+        # Make sure the project-specific dictionary does not contain duplicated words.
         for dictionary in .github/.cspell/*.txt; do
             if [[ "${dictionary}" == .github/.cspell/project-dictionary.txt ]]; then
                 continue
             fi
             dup=$(sed '/^$/d' .github/.cspell/project-dictionary.txt "${dictionary}" | LC_ALL=C sort -f | uniq -d -i | (grep -v '//.*' || true))
             if [[ -n "${dup}" ]]; then
-                warn "duplicated words in dictionaries; please remove the following words from .github/.cspell/project-dictionary.txt"
+                error "duplicated words in dictionaries; please remove the following words from .github/.cspell/project-dictionary.txt"
                 echo "======================================="
                 echo "${dup}"
                 echo "======================================="
             fi
         done
+
+        # Make sure the project-specific dictionary does not contain unused words.
+        unused=''
+        for word in $(grep -v '//.*' .github/.cspell/project-dictionary.txt || true); do
+            if ! grep <<<"${all_words}" -Eq -i "^${word}$"; then
+                unused+="${word}"$'\n'
+            fi
+        done
+        if [[ -n "${unused}" ]]; then
+            error "unused words in dictionaries; please remove the following words from .github/.cspell/project-dictionary.txt"
+            echo "======================================="
+            echo -n "${unused}"
+            echo "======================================="
+        fi
     else
         warn "'npm' is not installed"
     fi