Is it common or appropriate to create a tag for finding equivalent functions between two languages, and what format should be used for such tags?
For instance, I have a question (and have seen questions on this) about porting from Matlab code to R. A short tag would be
Matlab2R, which, frankly, looks dumb.
Convert-Matlab-to-R seems more apropos, but verbose. Perhaps
Update: I accepted the answer for two reasons. The first is that for less common language pairs on SO, introducing new tags is a bad idea: the number of subscribers will be low. It's best to use both of the languages. The second reason is more general: even for common pairs, such as C++ and Java, it's better to focus on the intended functionality, with an example drawn from the original language. In that case, it's probably best to just focus on the targeted language than the original language. With a larger user base, the targeted language won't often lack for people who grasp the idea. So, it's better to use the limited tags for specific functionality.