problem with tab-completion of file names

Conrad,

thanks for your report.

owever, in R 2.1.0a, tab-completion fills in the rest of the  
directory or file name, but the filled part is selected, and typing  
replaces the filled part, negating the usefulness of this feature.

In 2.0.1 we used our own completion code that couldn't deal with  
multiple completions (basically there was no GUI except for the text  
itself). In 2.1.0 we have switched to the Cocoa native completion  
API, i.e. the one provided by Apple. The advantage is that we can now  
use multiple completion alternatives which can be selected from the  
drop-down list. The drawback is that we have no way of affecting the  
GUI behavior. (If someone has an idea how to remedy that, please  
contact me).

To prevent the selection from being deleted, just press the right  
cursor key before typing further text.

If someone donates some better way of implementing the completion UI,  
we'll gladly accept it, but currently there are no plans for  
alternatives (from my side, as there are a few more important changes  
I need to make first). If you find this behavior really annoying, I  
could make a preference setting allowing you to revert to the old  
behavior (without multiple completions)...

Cheers,
Simon