Fix reversed phone numbers in rtl languages

src/pretix/base/pdf.py

@@ -285,7 +285,7 @@ DEFAULT_VARIABLES = OrderedDict((
     ("telephone", {
         "label": _("Phone number"),
         "editor_sample": "+01 1234 567890",
-        "evaluate": lambda op, order, ev: phone_format(order.phone)
+        "evaluate": lambda op, order, ev: phone_format(order.phone, html=False)
     }),
     ("email", {
         "label": _("Email"),

src/pretix/base/templatetags/phone_format.py

@@ -20,6 +20,8 @@
 # <https://www.gnu.org/licenses/>.
 #
 from django import template
+from django.utils.html import escape
+from django.utils.safestring import mark_safe
 from phonenumber_field.phonenumber import PhoneNumber
 from phonenumbers import NumberParseException
 
@@ -27,17 +29,20 @@ register = template.Library()
 
 
 @register.filter("phone_format")
-def phone_format(value: str):
+def phone_format(value: str, html=True):
     if not value:
-        return ""
-
-    if isinstance(value, str):
+        v = ""
+    elif isinstance(value, str):
         try:
-            return PhoneNumber.from_string(value).as_international
+            v = PhoneNumber.from_string(value).as_international
         except NumberParseException:
-            return value
+            v = value
+    elif isinstance(value, PhoneNumber) and value.national_number:
+        v = value.as_international
+    else:
+        v = str(value)
 
-    if isinstance(value, PhoneNumber) and value.national_number:
-        return value.as_international
+    if html:
+        v = mark_safe('<span class="force-ltr">' + escape(v) + '</span>')
 
-    return str(value)
+    return v