Merge pull request #194 from helmet91/cli-recommendation-for-syntax-highlighting

add syntax highlighter plugin API and syntect plugin

Author: kivikakk

.github/workflows/rust.yml

@@ -4,7 +4,7 @@ on: [push, pull_request]
 
 
 jobs:
-  build:
+  build_test_spec:
     runs-on: ubuntu-latest
     strategy:
       matrix:
@@ -22,6 +22,22 @@ jobs:
       run: env SPEC=false script/cibuild
     - name: Run spec tests
       run: env SPEC=true script/cibuild
+  no_features_build_test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        rust:
+          - nightly
+          - beta
+          - stable
+    steps:
+    - uses: actions/checkout@v1
+      with:
+        submodules: true
+    - name: Obtain Rust
+      run: rustup override set ${{ matrix.rust }}
+    - name: Build and test with no features
+      run: cargo test --no-default-features --tests
   clippy_format:
     runs-on: ubuntu-latest
     strategy: