fix: shellcheck warnings

.github/workflows/push.yml

@@ -0,0 +1,89 @@
+name: Test Build
+
+on: push
+
+jobs:
+  spellcheck:
+    name: Check Grammar
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+      - uses: awalsh128/cache-apt-pkgs-action@latest
+        with:
+          packages: "codespell"
+          version: 1.0
+      - run: codespell
+
+  shellcheck:
+    name: Shell Check
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/check_build@v4
+      - uses: awalsh128/cache-apt-pkgs-action@latest
+        with:
+          packages: "shellcheck"
+          version: 1.0
+      - run: shellcheck -P $(find . -type f -name '*.sh' -not -path './assets/pkg/aur/*/src/*')
+
+  check_build:
+    permissions: write-all
+    strategy:
+      matrix:
+        include:
+          - arch_name: x86_64
+            cc: gcc
+            cflags:
+          - arch_name: x86
+            cc: gcc
+            cflags: -m32
+
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: myrotvorets/set-commit-status-action@master
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          status: pending
+          context: Build (${{ matrix.arch_name }})
+
+      - name: Attempt Build (${{ matrix.arch_name }})
+        uses: ./.github/actions/build
+        with:
+          arch_name: ${{ matrix.arch_name }}
+          cc: ${{ matrix.cc }}
+          cflags: "-Wall ${{ matrix.cflags }}"
+
+      - name: Download Build Results
+        uses: actions/download-artifact@v4
+        with:
+          name: build-${{ matrix.arch_name }}
+          path: build-results
+
+      - name: Process Results
+        id: get-stats
+        if: always()
+        run: |
+          if ! [ -d "build-results" ]; then
+            # Build failed
+            echo "DESCR=" >> "$GITHUB_OUTPUT"
+          else
+            # Build Succeeded
+            cd "build-results"
+            ls -lah
+            cat stderr-* >&2
+            WARNS="$(cat stderr-* | grep '^[^ ]*\.[ch]:' | wc -l)"
+            HSIZE="$(stat --printf="%s" lidm-* | numfmt --to=iec-i)B"
+
+            echo "DESCR='$HSIZE, $WARNS warnings'" >> "$GITHUB_OUTPUT"
+          fi
+
+      - name: Set final commit status
+        uses: myrotvorets/set-commit-status-action@master
+        if: always()
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          status: ${{ job.status }}
+          context: Build (${{ matrix.arch_name }})
+          description: ${{ steps.get-stats.outputs.DESCR }}