Best practice for keeping track of i18n labels that need translating in Grails?

I'm working on a Grails project that is internationalized (using the .properties resource bundles), and at the end of each release, we send a list of all the i18n messages that need to be translated. The problem is, there is no way to know which ones need updating/which ones are missing without manually tagging it (ie adding some 'magic word' at the end of each key). This seems very hacky and error prone.

What is common 开发者_C百科practice for keeping track of uninternationalized i18n labels?

Thanks.

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Missing labels can automatically be detected by the ResouceCheck ant task. In particular, with the cross bundle check, it can inform you if a label is missing from any the properties for any locale.

For updated labels, I generally store the version number of the messages.properties that was last used as translation source in a header comment in each messages_xx.properties. Then a diff between the current messages.properties and the translation source version will show the properties that have changed and need to be retranslated.