In /app/code/core/Mage/Checkout/controllers/CartController.php
I see:
$this->_getSession()->addError(
$this->__(
'Coupon code "%s" is not valid.',
Mage::helper('core')->escapeHtml($couponCode)
)
);
In my theme's translate.csv
I have added:
"Mage_Checkout::Coupon code ""%s"" was applied.","test"
"Coupon code ""%s"" is not valid.","test"
If I edit the controller code directly, it works. The translate.csv does not work — it still outputs the original text, 'Coupon code "blah" is not valid.'.
I even tried editing the translation in app/locale/en_US/Mage_Checkout.csv
but it didn't work either.
What have I missed? Shouldn't it be outputting "test" ??
Best Answer
To be sure, you should add the translation scope (i.e. the module name) to both translations:
Don't forget to clean the cache after changing translations.