Text inputs with history - preserve the current name

[Slanec]

I guess the topic name isn't really explanatory, so here's the deal:
1) Pick a file or directory, press F2 (or invoke any other text input that remembers recent inputs)
2) (optional) Start editing the name, write something, delete something else...
3) Press a down arrow (or PageDown accidentally when trying to press End ) - the last used entry appears
4) Try to get back the original name of file (or semi-edited name) by pressing Up.
5) Cry as nothing happens.

Could those things remember also the original line that we escape from at the first time we press Down?

[Ether]

Unfortunately, this is a problem throughout the whole Windows UI. Maybe the inputs could be hacked into remembering the original value in the editing history (Ctrl+Z then would help ).