(Bug fix) Fix the weird 'empty translations' & correct backslash escaping in translation strings (#14609)

* (Bug fix) Fix the weird 'empty translations' & correct backslash escaping in translation strings

* Update crowdin workflows
GitHub is deprecating Node.js 12, so some actions need to be updated to ensure functionality into the future.

.github/workflows/crowdin-daily.yml

@@ -16,13 +16,16 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Setup Java JDK
-        uses: actions/setup-java@v1
+        uses: actions/setup-java@v3
         with:
-          java-version: 1.8
+          java-version: 18
+          distribution: zulu
       - name: Setup Python
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v4
+        with:
+          python-version: '3.10'
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Crowdin Sync
         shell: bash
         env:

.github/workflows/crowdin.yml

@@ -18,13 +18,16 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Setup Java JDK
-        uses: actions/setup-java@v1
+        uses: actions/setup-java@v3
         with:
-          java-version: 1.8
+          java-version: 18
+          distribution: zulu
       - name: Setup Python
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v4
+        with:
+          python-version: '3.10'
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Crowdin Sync
         shell: bash
         env:

intl/json2h.py

@@ -88,8 +88,10 @@ def update(messages, template, source_messages):
         if tp_msg['key'] in messages and messages[tp_msg['key']] != source_messages[tp_msg['key']]:
             tp_msg_val = tp_msg['val']
             tl_msg_val = messages[tp_msg['key']]
-            # escape: reduce \\ -> \ (prevents 'over-expansion': \\ -> \\\\), then expand all \ -> \\
-            tl_msg_val = tl_msg_val.replace('\\\\', '\\').replace('\\', '\\\\')
+            # escape all \
+            tl_msg_val = tl_msg_val.replace('\\', r'\\')
+            # remove "double-dipping" on escape sequences
+            tl_msg_val = re.sub(r'\\\\(?=[nrt])', r'\\', tl_msg_val)
             # escape other symbols
             tl_msg_val = tl_msg_val.replace('"', '\\\"').replace('\n', '')
             if tp_msg['key'].find('_QT_') < 0: