diff --git a/.github/workflows/build-artifacts.yml b/.github/workflows/build-artifacts.yml
index d6785d7..a7150f5 100644
--- a/.github/workflows/build-artifacts.yml
+++ b/.github/workflows/build-artifacts.yml
@@ -25,11 +25,13 @@ jobs:
         run: |
           chmod +x ./scripts/compile-grammar.sh
           ./scripts/compile-grammar.sh
+        shell: bash
 
       - name: Compile Coverage Badge SVG
         run: |
           sudo apt-get install -y xsltproc
           make -B $(pwd)/images/coverage-badge.svg
+        shell: bash
 
       - name: Import GPG key
         id: import-gpg
@@ -45,6 +47,7 @@ jobs:
           echo "fingerprint: ${{ steps.import-gpg.outputs.fingerprint }}"
           echo "username:    ${{ steps.import-gpg.outputs.name }}"
           echo "email:       ${{ steps.import-gpg.outputs.email }}"
+        shell: bash
 
       - name: Auto-commit changes
         id: auto-commit-action
@@ -54,9 +57,12 @@ jobs:
           branch: main
           commit_options: '--no-verify --signoff -S'
           file_pattern: 'syntaxes/* images/*'
+          author_user_name: "${{ steps.import-gpg.outputs.name }}"
+          author_user_email: "${{ steps.import-gpg.outputs.email }}"
           commit_user_name: "${{ steps.import-gpg.outputs.name }}"
           commit_user_email: "${{ steps.import-gpg.outputs.email }}"
 
       - name: Run if changes have been detected
         if: steps.auto-commit-action.outputs.changes_detected == 'true'
         run: echo "New TextMate grammar was published"
+        shell: bash
diff --git a/.github/workflows/pre-commit.yml b/.github/workflows/pre-commit.yml
index fb197f3..9d817a7 100644
--- a/.github/workflows/pre-commit.yml
+++ b/.github/workflows/pre-commit.yml
@@ -14,6 +14,7 @@ jobs:
         run: |
           brew install pre-commit jsonlint yamllint shellcheck
           vagrant plugin install vagrant-disksize
+        shell: bash
 
       - name: Checkout
         uses: actions/checkout@v4
@@ -33,6 +34,8 @@ jobs:
       - name: Show pre-commit logs
         if: failure()
         run: cat ~/.cache/pre-commit/pre-commit.log
+        shell: bash
 
       - name: Show pre-commit version
         run: pre-commit --version
+        shell: bash
diff --git a/src/operators.YAML-tmLanguage b/src/operators.YAML-tmLanguage
index ebcaf82..12771f4 100644
--- a/src/operators.YAML-tmLanguage
+++ b/src/operators.YAML-tmLanguage
@@ -44,5 +44,9 @@ repository:
                 match: "(\\')(?!\\b)"
                 name: keyword.operator.derivative.parigp
             -
-                match: '(\#)\b\s*(?!$)'
-                name: keyword.operator.cardinality.parigp
+                match: '(\#)(\s*)(?!$)'
+                captures:
+                    1:
+                        name: keyword.operator.cardinality.parigp
+                    2:
+                        name: constant.character.whitespace.parigp
diff --git a/tests/operators.test.gp b/tests/operators.test.gp
index 1467f28..917b016 100644
--- a/tests/operators.test.gp
+++ b/tests/operators.test.gp
@@ -101,3 +101,12 @@
 ##      ^^ source.parigp keyword.operator.shift.parigp
 ##         ^ source.parigp constant.numeric.int.parigp
 ##          ^ source.parigp markup.punctuation.statement-terminator.parigp
+
+  # [1, 2, 3]
+##^ source.parigp keyword.operator.cardinality.parigp
+## ^ source.parigp constant.character.whitespace.parigp
+##  ^ source.parigp meta.brackets.parigp punctuation.section.brackets.begin.parigp
+##   ^  ^  ^ source.parigp meta.brackets.parigp constant.numeric.int.parigp
+##    ^  ^ source.parigp meta.brackets.parigp markup.punctuation.separator.parigp
+##     ^  ^ source.parigp meta.brackets.parigp constant.character.whitespace.parigp
+##          ^ source.parigp meta.brackets.parigp punctuation.section.brackets.end.parigp