Add gettext check to Lefthook

doc/development/contributing/style_guides.md

@@ -91,8 +91,32 @@ To skip some checks based on tags when pushing, you can set the `LEFTHOOK_EXCLUD
 LEFTHOOK_EXCLUDE=frontend,documentation git push ...
 ```
 
+As an alternative, you can create `lefthook-local.yml` with this structure:
+
+```yaml
+pre-push:
+  exclude_tags:
+    - frontend
+    - documentation
+```
+
 For more information, check out [Lefthook documentation](https://github.com/Arkweid/lefthook/blob/master/docs/full_guide.md#skip-some-tags-on-the-fly).
 
+### Skip or enable a specific Lefthook check
+
+To skip or enable a check based on its name when pushing, you can add `skip: true`
+or `skip: false` to the `lefthook-local.yml` section for that hook. For instance,
+you might want to enable the gettext check to detect issues with `locale/gitlab.pot`:
+
+```yaml
+pre-push:
+  commands:
+    gettext:
+      skip: false
+```
+
+For more information, check out [this Lefthook documentation section](https://github.com/evilmartians/lefthook/blob/master/docs/full_guide.md#skipping-commands).
+
 ## Ruby, Rails, RSpec
 
 Our codebase style is defined and enforced by [RuboCop](https://github.com/rubocop-hq/rubocop).

lefthook.yml

@@ -38,3 +38,9 @@ pre-push:
       files: git diff --name-only --diff-filter=d $(git merge-base origin/master HEAD)..HEAD
       glob: 'doc/*.md'
       run: if command -v vale 2> /dev/null; then vale --config .vale.ini --minAlertLevel error {files}; else echo "Vale not found. Install Vale"; fi
+    gettext:
+      skip: true # This is disabled by default. You can enable this check by adding skip: false in lefhook-local.yml https://github.com/evilmartians/lefthook/blob/master/docs/full_guide.md#skipping-commands
+      tags: backend frontend view haml
+      files: git diff --name-only --diff-filter=d $(git merge-base origin/master HEAD)..HEAD | while read file;do git diff --unified=1 $(git merge-base origin/master HEAD)..HEAD $file | grep -Fqe '_(' && echo $file;done; true
+      glob: "*.{haml,rb,js,vue}"
+      run: bin/rake gettext:updated_check