Add option to find missing strings in only some locales (#2356)

This adds the option to filter the output of find-missing-locales.py by
passing locale codes (like ``en``) to it so that translators don't need
to search for their specific languages in the output.

scripts/frontend-development/find-missing-locales.py

@@ -1,3 +1,4 @@
+import sys
 from collections import defaultdict
 from glob import glob
 from json import load
@@ -46,9 +47,10 @@ def main():
     for en_file in glob(path.join(DIR, EN_PATH)):
         for file in glob(path.join(DIR, ALL_PATH)):
             if path.basename(en_file) == path.basename(file) and file != en_file:
-                file_info = audit(file, en_file)
                 lang = path.basename(path.dirname(file))
-                per_language_dict[lang].append(file_info)
+                if len(sys.argv) == 0 or lang in sys.argv:
+                    file_info = audit(file, en_file)
+                    per_language_dict[lang].append(file_info)
     for results in per_language_dict.values():
         list(map(lambda args: print_result(*args), results))
         print()

website/docs/add_edit_translations.md

@@ -35,4 +35,9 @@ When editing existing translations, follow these rules:
 A script can be used to find missing and potentially untranslated locale files. Run the script from the root dir using
 `python scripts/frontend-development/find-missing-locales.py`.
 
+You may pass any languages you want to include in the search to the script like so:\
+`python scripts/frontend-development/find-missing-locales.py de ja`\
+This would only show missing/untranslated strings in the German (de) and Japanese (ja) locale files.\
+Passing nothing will default to searching all locales instead.
+
 If you have any questions or need further assistance, please reach out.