BibTeX, biblatex and biber ⇒ You can't pop an empty literal stack for entry ... while executing---line ... of file ...

[teub]

Dear experts,
I have been provided a file to handle references in a project and after some modifications of this file, I am able to have all my references displayed nicely. But I have numerous warnings as :

You can't pop an empty literal stack for entry ESPP2013 while executing---line 1235 of file fcc.bst

This entry is a Misc (I have intentionnaly removed informations in title, Url and HowPublished)
Note that this warning happens for all type of entries defined in the fcc.bst file.

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@Misc{ESPP2013,
  Title                               = {{The title}},
  Url                                 = {https://.../...},
  Year                              = {2013},
  HowPublished              = {{Document}}
}
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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I have seen several topics for this kind of issue but after 1 day of investigations, my lack of knowledge asked me to talk in this forum. So I would like you to help me to understand what is making this warning (I have hundreds of them).
The fcc.bst file content is :

Code: Select all

Code, edit and compile here:

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% ...
%
% ...
%
% History:
%       2008-11-06 (MC) fixed bugs in format.collaboration and format.journal
%       2008-10-24 (MC) changed journal, title and \etal italicization
%       2008-10-22 (MC) adapted collaboration entry from
%              ...
%
ENTRY
  { address
    author
    booktitle
    chapter
    edition
    editor
    howpublished
    institution
    journal
    key
    month
    note
    number
    organization
    pages
    publisher
    school
    series
    title
    type
    volume
    year
    archive
    eprint
    report
    collaboration
    SLACcitation
    archivePrefix
    primaryClass
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Run LaTeX here

Thanks a lot.

[kaiserkarl13]

That's not a warning, it's an error. BibTeX is trying to tell you that you tried to remove an item from the stack, but there are no items on it. Think of it like being told to draw a card, but there are no more cards to draw.

It's coming from the fact that you modified the add.doi function and did a couple of other things. I didn't have time to track down exactly what broke it, but I would suggest you go through the changes you made from the (working) original, one-by-one, and see which one broke your bst file. Don't ignore the error messages!

[teub]

Ok I am now back to the original file and I have issues I am not understanding.

0/ The original fcc.bst :

Code: Select all

Code, edit and compile here:

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% ...
%
% ...
%
% ...
%       ...
%       ...
%       ...
%             ...
%
ENTRY
  { address
    author
    booktitle
    chapter
    edition
    editor
    howpublished
    institution
    journal
    key
    month
    note
    number
    organization
    pages
    publisher
    school
    series
    title
    type
    volume
    year
    archive
    eprint
    report
    collaboration
    SLACcitation
    archivePrefix
    primaryClass
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Run LaTeX here

question 1/ how to modify this code to get the DoI value defined to appear in the preview without breaking the whole structure ?

question 2/ I am seeing that in the case of an article I still have such warnings :

You can't pop an empty literal stack for entry ... while executing---line ... of file fcc.bst

by looking at article references without any complain, I have found that if there is the month defined it makes this warning happening and if in this same entry I remove month it is not complaining ???

By following month, I fall in the "function" format.journal and format.date.paren, but I have no knowledge in this language to get any clever debugging alone.

Example of reference making the warning (and warning disappearing when no month entry):

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@Article{bib:parameter,
  Title                    = {{tile}},
  Author                   = {M.~Name},
  Journal                  = {journal},
  Year                     = {2015},
  Month                    = {October},
  Doi                      = {doi_path},
  Number                   = {10},
  Pages                    = {101002},
  Volume                   = {18}
}
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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I hope to have any help to these very precise questions.

[teub]

question 1 fix found :
by trying completely randomly I have found the following fix

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%        {"\href{http://dx.doi.org/" doi * "}{" * swap$ * "}" *}
        {", DOI:" * doi * " \href{http://dx.doi.org/" doi * "}{" * swap$ * "}"  *}
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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question 2 "fix" found :
I will put into year the month + year info
I cannot do better, hope to have a clever person who could help me soon.

[kaiserkarl13]

This is different from what you previously posted because it leaves swap$ in place (i.e., it takes the top entry of the stack and swaps it with the next one, rather than adding the DOI to the stack and leaving that entry in place). Without spending more time reconstructing your stack, I couldn't tell you why that fixed it, but leaving the stack alone except for additional entries you want written to the file is typically the way to go to avoid such errors.

[teub]

I give up....