Created attachment 102351 [details]
Patch to add some functionality to the unique modifier

My aim was to replace my current bash script for renaming my pictures. My renaming scheme is:
*date*_*time**uniq*-*title*.*ext*
where the uniq modifier is an alphabetic character in case of naming conflicts. So I implemented an option to user alphabetic characters instead of numbers and to use a custom separator (or none at all in my case).
Unfortunately it turned out that there is one major problem with the entire advancedrename module: Renaming is done file by file, so a single renaming process can only be aware of already renamed files. Thus the first file that will be conflicting does not get the *uniq* attachment, e.g. two conflicting files are renamed:
   datetime-title.jpg
   datetime_1-title.jpg
while the desirable thing to happen would be
   datetime_1-title.jpg
   datetime_2-title.jpg
However I do not see how this could be easily achieved, so I will keep using my script. However this functionality might be useful to someone, so you might as well integrate it.