I think it may be related to this: https://bugs.kde.org/show_bug.cgi?id=318942
I used to rename video file and their subtitle files with the same name (they have different extensions, so there wouldn't be a problem). I select both files, press F2, write a name (without the character #) and before I could do this, but now the Rename button is disabled unless I write the character #. So, now I have to rename each file separately, wich is tedious...
Thanks for the bug report.
Actually, the "rename multiple files" feature was always intended to be used with one or more '#', which would be replaced by numbers. The fact that renaming was enabled if there were no '#' at all was an accident, which could also lead to problems if there were multiple selected files with the same extension.
However, I see that this accidental feature can be useful in your use case, and I think that it won't hurt anyone if we also enable the button if all extensions are different, and there is no '#' in the string.
It should be great if you implement this feature. To me it's very useful and, as you said, it doesn't hurt anyone.
Git commit 6f2e1403480bf5617b0cba92d6cbbbb4f62aec2c by Frank Reininghaus.
Committed on 20/06/2013 at 17:37.
Pushed by freininghaus into branch 'KDE/4.10'.
Allow renaming multiple files without number if extensions are different
Normally, we only allow renaming multiple files if the new file name
contains a contiguous sequence of '#' placeholders, which are then
replaced by numbers.
However, if all extensions are different, we can also rename the files
without such a placeholder because the original extension is preserved
This had been possible some time ago already. That this "accidental
feature" was lost was a side effect of the fix for bug 318942.
M +22 -4 dolphin/src/views/renamedialog.cpp
M +1 -0 dolphin/src/views/renamedialog.h