project: misc CI improvements.

.github/workflows/ci.yml

@@ -1,15 +1,37 @@
 name: ci
 
-on: [push, pull_request]
+on:
+  push:
+  pull_request:
+  merge_group:
+  schedule:
+    - cron: '0 18 * * *'
 
 env:
   RUSTFLAGS: -D warnings
+  RUSTDOCFLAGS: -D warnings
 
 jobs:
+  clippy:
+    name: Clippy
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v3
+        with:
+          persist-credentials: false
+      - name: Install rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          components: clippy
+      - run: cargo clippy --all-features
+
   build-windows:
     runs-on: windows-latest
     steps:
-    - uses: actions/checkout@master
+    - uses: actions/checkout@v3
+      with:
+        persist-credentials: false
     - name: Install Rust
       uses: dtolnay/rust-toolchain@master
       with:
@@ -26,7 +48,6 @@ jobs:
     - name: Run cargo doc
       run: cargo doc --all --all-features
 
-
   build:
     strategy:
       matrix:
@@ -39,11 +60,11 @@ jobs:
             toolchain: nightly
           - os: macOS-latest
             toolchain: stable 7 months ago
-
     runs-on: ${{ matrix.os }}
-
     steps:
-    - uses: actions/checkout@master
+    - uses: actions/checkout@v3
+      with:
+        persist-credentials: false
     - name: Install Rust
       uses: dtolnay/rust-toolchain@master
       with:
@@ -57,3 +78,27 @@ jobs:
       run: cargo test --verbose --features x509-parser
     - name: Run cargo doc
       run: cargo doc --all --all-features
+
+  coverage:
+    name: Measure coverage
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v3
+        with:
+          persist-credentials: false
+      - name: Install cargo-llvm-cov
+        uses: taiki-e/install-action@cargo-llvm-cov
+      - name: Install rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          components: llvm-tools
+      - name: Measure coverage
+        run: cargo llvm-cov --all-features --lcov --output-path ./lcov.info
+      - name: Report to codecov.io
+        uses: codecov/codecov-action@v3
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          files: ./lcov.info
+          fail_ci_if_error: false
+          verbose: true

src/lib.rs

@@ -356,7 +356,7 @@ impl DnType {
 pub enum DnValue {
 	/// A string of characters from the T.61 character set
 	TeletexString(Vec<u8>),
-	/// An ASCII string containing only A-Z, a-z, 0-9, '()+,-./:=? and <SPACE>
+	/// An ASCII string containing only A-Z, a-z, 0-9, '()+,-./:=? and `<SPACE>`
 	PrintableString(String),
 	/// A string encoded using UTF-32
 	UniversalString(Vec<u8>),