The DonationInterface extension has 22 messages that include <a href. All of them are in DonationInterface/gateway_common/i18n/interface/en.json:

1. donate_interface-processing-error
2. donate_interface-donor-opt_in_explain
3. donate_interface-donor-opt_in_explain_001
4. donate_interface-error-msg-invalid-country
5. donate_interface-error-msg-limit
6. donate_interface-error-msg-apple_pay_unsupported
7. donate_interface-error-msg-google_pay_unsupported
8. donate_interface-donate-error-try-a-different-card-html
9. donate_interface-donate-error-try-again-html
10. donate_interface-donation-cancelled
11. donate_interface-error-no-form-html
12. donate_interface-question-comment
13. donate_interface-otherways
14. donate_interface-otherways-in
15. donate_interface-otherways-alt
16. donate_interface-did-you-mean
17. donate_interface-email-unsub-fail
18. donate_interface-email-unsub-warning
19. donate_interface-email-optin-fail
20. donate_interface-informationsharing
21. donate_interface-taxded-msg-x
22. donate_interface-photo-license

Translations of messages with <a href have to be manually reviewed when they are imported from translatewiki to Gerrit. This is time-consuming for the translatewiki volunteers and maintainers. It's error-prone, too. It would be nice to get rid of them.

As far I can see, all of those DonationInterface messages have href values of three types:

1. mailto:$1 (or some other number after $)
2. $1 (or some other number after $)
3. #

So none of them need any customizations by translators. This is good, and probably makes things easier to fix.

For example, donate_interface-donor-opt_in_explain is currently *Your information is handled in accordance with our <a href="$1">Donor Privacy Policy</a>. Each email you receive will include easy unsubscribe options. The words "Donor Privacy Policy" can probably be moved to a different message, then it can be wrapped in run-time in <a href="$1">...</a>, and inserted into donate_interface-donor-opt_in_explain as a parameter.

Finally, the original message will become something like *Your information is handled in accordance with our $1. Each email you receive will include easy unsubscribe options. (And the qqq must say that $1 is that other message, but that's the easiest part.)

I appreciate any help with completing this. Once this is achieved, localizing donation interface will be more streamlined and secure. Thanks! <3