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explain purpose of interpolation feature

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1 parent 26b7bd9 commit f388babc729174c305902be38cee01011eb0aa18 Sven Fuchs committed Dec 16, 2008
Showing with 1 addition and 1 deletion.
  1. +1 −1 railties/doc/guides/source/i18n.txt
@@ -263,7 +263,7 @@ I18n.t 'active_record.error_messages'
=== Interpolation
-TODO explain what this is good for
+In many cases you want to abstract your translations so that variables can be interpolated into the translation. For this reason the I18n API provides an interpolation feature.
All options besides :default and :scope that are passed to #translate will be interpolated to the translation:

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