Nathanael Nerode dixit:
(sorry, don't find the original message from Frank.)
its use as a left quote in GNU (and not only GNU) style messages such as `foobar'
The GNU project seems to have ceased to do this and in fact I have heard that gcc 4.0 uses the correct unicode quotation marks for the en_US.UTF-8 locale (on locale-aware operating systems such as the GNU) and plain '...' on the C/POSIX locales.
ASCII does not have such a thing as paired quotation marks.
The best you can emulate it is via `...� but the latter is latin1, and neither of these characters can stand alone, they are composing characters (and usually deadkeys).
bye, //mirabile