bug#52354: 27.2; bibtex-sort-buffers fails at least for types @PhdThesis and @TechReport

[Dominik Schrempf <dominik.schrempf@gmail.com>]

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Hello,

thank you for looking into this.

I can reproduce this bug using `emacs -Q`:

1. Start `emacs -Q`.
2. Open the attached bibliography file.
3. `M-x bibtex-set-dialect RET`; `biblatex RET`.
4. `bibtex-sort-buffer`.

I expect the middle entry (@PhdThesis) to move to the bottom but nothing
happens. The file sorts correctly when the dialect is `BibLateX`, and not
changed.

Lars Ingebrigtsen <larsi@gnus.org> writes:

> Dominik Schrempf <dominik.schrempf@gmail.com> writes:
>
>> When using `bibtex-sort-buffers’ on a BibTeX file with BibLaTeX dialect,
>> items of type @PhdThesis and @TechReport (but probably other types too)
>> are not sorted correctly.
>>
>> For example, the following order is not changed when executing the
>> mentioned function:
>>
>> @Article{Shaw2013, …}
>> @PhdThesis{Siren2012, …}
>> @Article{Shih2013, …}
>
> Trying to sort that with `bibtex-sort-buffers’ doesn’t seem to do
> anything, with or without the @PhdThesis entry?
>
> Do you have a complete recipe for reproducing the problem, starting from
> “emacs -Q”?  (And a complete test file would be helpful, too.)

[-- Attachment #2: bibliography.bib --]
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 @Article{Shaw2013,
  author          = {Shaw, Timothy I. and Ruan, Zheng and Glenn, Travis C. and
                  Liu, Liang},
  title           = {STRAW: Species TRee Analysis Web server},
  journaltitle    = {Nucleic Acids Research},
  year            = 2013,
  volume          = 41,
  number          = {Web Server issue},
  pages           = {W238--241},
  doi             = {10.1093/nar/gkt377},
}

@PhdThesis{Siren2012,
  Author        = {Sirén, Jukka},
  Title         = {Statistical models for inferring the structure and history
                  of populations from genetic data},
  School        = {University of Helsinki},
  Year          = 2012
}

@Article{Shih2013,
  author          = {P. M. Shih and N. J. Matzke},
  title           = {Primary Endosymbiosis Events Date to the Later Proterozoic
                  with Cross-Calibrated Phylogenetic Dating of Duplicated Atpase
                  Proteins},
  journaltitle    = {Proceedings of the National Academy of Sciences},
  year            = 2013,
  volume          = 110,
  number          = 30,
  pages           = {12355-12360},
  doi             = {10.1073/pnas.1305813110},
}