I see quite some of these warnings when compiling my document. I used biber --tool
directly on my bib file and get this:
$ biber --tool references.bib
INFO - This is Biber 2.18 running in TOOL mode
INFO - Logfile is 'references.bib.blg'
INFO - Looking for bibtex file 'references.bib'
INFO - LaTeX decoding ...
INFO - Found BibTeX data source 'references.bib'
INFO - Overriding locale 'en_US' defaults 'variable = shifted' with 'variable = non-ignorable'
INFO - Overriding locale 'en_US' defaults 'normalization = NFD' with 'normalization = prenormalized'
INFO - Sorting list 'tool/global//global/global' of type 'entry' with template 'tool' and locale 'en_US'
INFO - No sort tailoring available for locale 'en_US'
INFO - Writing 'references_bibertool.bib' with encoding 'UTF-8'
INFO - Output to references_bibertool.bib
WARN - Overwriting field 'year' with year value from field 'date' for entry 'Olszta2007'
WARN - Overwriting field 'month' with month value from field 'date' for entry 'Olszta2007'
WARN - Range field 'pages' in entry 'Falvo_D_Urso_Labate_2016' is malformed, falling back to literal
WARN - BibTeX subsystem: /tmp/biber_tmp_FtYt/33e59b5ca9ec342068223d604c3f8d55_2647.utf8, line 13947, warning: possible runaway string started at line 13945
WARN - BibTeX subsystem: /tmp/biber_tmp_FtYt/33e59b5ca9ec342068223d604c3f8d55_2647.utf8, line 21866, warning: 27 characters of junk seen at toplevel
WARN - BibTeX subsystem: /tmp/biber_tmp_FtYt/33e59b5ca9ec342068223d604c3f8d55_2647.utf8, line 27659, warning: 1 characters of junk seen at toplevel
WARN - BibTeX subsystem: /tmp/biber_tmp_FtYt/33e59b5ca9ec342068223d604c3f8d55_2647.utf8, line 27677, warning: 1 characters of junk seen at toplevel
WARN - BibTeX subsystem: /tmp/biber_tmp_FtYt/33e59b5ca9ec342068223d604c3f8d55_2647.utf8, line 27697, warning: 1 characters of junk seen at toplevel
WARN - BibTeX subsystem: /tmp/biber_tmp_FtYt/33e59b5ca9ec342068223d604c3f8d55_2647.utf8, line 27736, warning: 1 characters of junk seen at toplevel
WARN - BibTeX subsystem: /tmp/biber_tmp_FtYt/33e59b5ca9ec342068223d604c3f8d55_2647.utf8, line 27938, warning: 1 characters of junk seen at toplevel
WARN - BibTeX subsystem: /tmp/biber_tmp_FtYt/33e59b5ca9ec342068223d604c3f8d55_2647.utf8, line 27957, warning: 1 characters of junk seen at toplevel
WARN - BibTeX subsystem: /tmp/biber_tmp_FtYt/33e59b5ca9ec342068223d604c3f8d55_2647.utf8, line 27979, warning: 1 characters of junk seen at toplevel
WARN - BibTeX subsystem: /tmp/biber_tmp_FtYt/33e59b5ca9ec342068223d604c3f8d55_2647.utf8, line 28004, warning: 1 characters of junk seen at toplevel
WARN - BibTeX subsystem: /tmp/biber_tmp_FtYt/33e59b5ca9ec342068223d604c3f8d55_2647.utf8, line 28026, warning: 1 characters of junk seen at toplevel
WARN - BibTeX subsystem: warning: comma(s) at end of name (removing)
INFO - WARNINGS: 15
I also looked directly at the temporary file but cannot see anything fishy at the mentioned lines…
The internet is full of such questions but not much solutions are available other than looking for non-ascii chars. I also do not understand the runaway warning, because I can not see an single unescaped %
in the file…
However, as the file is generated by JabRef, maybe someone here has some insights?
(Even though these are just warnings, and everything compiles perfectly, I want to know what the problem is, because these things (weird characters etc) have to be proven nasty in the past to get to real issues real quick…)