Another point is that boost::format throws on almost any error while boost::locale::format ignores error (as you don't want a translator to crash the program)
Hmmm...is there at least some convenient mechanism for the user to detect errors encountered by boost::locale::format after boost::locale::format has returned?
Could the error behavior be specified in the call to boost::locale::format?
I explain, the error of for example missing parameter is almost never a error, consider following: format(translate("Passed {1} day", "Passed {1} days",n)) % n; Now in Hebrew it would have 3 plural forms: single, dual and plural עבר יום {1} /passed {1} day עברו יומיים /passed two-days when "two-days" is a single world - no parameter used עברו {1} ימים / passed {1} days So missing parameter is ok in localization context, while boost::format throws unless you do something specific. Artyom