BibDesk actually does store information on the date a bibtex reference was
first added.
If you right-click on the columns in the main window (or two-finger
tap/click, depending on your settings) and select "Add Other ..." you can
add the Columns Date-Added and Date-Modified. Clicking on them then sorts
your entries accordingly.
If you open your .bib file in a text editor you also see these fields for
every entry.
On Sun, Jul 22, 2018 at 10:50 AM, John Clegg <jjcl...@gmail.com> wrote:
> Dear all,
>
> Sorry to barge in on this list, but I’m quite desperate as I have only a
> few days to submit my dissertation and I am at a loss about how to solve a
> .bib file management problem.
>
> My problem is that at some point in the past I merged two large
> bibliography files and I now need to unmerge them. Specifically I need to
> delete all references that came from one of the two original files.
>
> Because BibDesk does not appear to store information on the date a bibtex
> reference was first added, the only way that I can identify which reference
> is from which original file is from the citekey. In one of the files all
> the citekeys were constructed with full colons and in the other none of
> them were, so if I can search the citekey field for a full colon I can
> select all the references from one original file and not the other. However
> the Smart Group feature does not currently allow me to match by citekey.
> Would it be possible to do this using a “Script Group”? Unfortunately I do
> not have any experience writing scripts and I haven’t found any help
> documentation on this BibDesk feature.
>
> Since I still have one of the original .bib files from which this merged
> .bib file was created I presume I could also do the unmerge by identifying
> and removing duplicates between the merged file and original file. However
> I cannot see a feature for this in BibDesk and I’m not familiar with the
> command line tools that I presume would be necessary for this.
>
> Can anyone help me out?
>
> Best,
> John
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