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# This file gives a configuration suitable when chapterbib is being used.
# Latexmk without special configuration works with chapterbib only if
# chapter bibliographies are used, but not when an overall consolidated
# document-level bibliography is used. (This is because one of the runs of
# bibtex gives an error of a kind that causes latexmk to stop further
# processing. The chapterbib documentation mentions this problem
# explicitly and says the error is to be ignored.)
# The configuration in this file allows the use of a document level
# bibliographys without any errors. It works equally when there is no
# document level bibliography and when chapterbib is not used.
$bibtex = 'bibtex %O %S';
$bibtex_save = $bibtex;
$bibtex = 'internal bibtex_fix %R %D %S';
# MUST NOT use bibtex_fudge (i.e., change of directory before running bibtex).
# That's not needed in post-2019 versions of bibtex, and messes up
# things with chapterbib. So turn it off:
$bibtex_fudge = 0;
$clean_ext .= " %R-mod.blg %R-mod.aux %R-mod.bbl";
sub bibtex_fix {
my ($root, $dest, $source) = @_;
local ($base_tex, $path, $ext) = fileparse( $source, '\.[^\.]*' );
my $ret = 0;
if ( $base_tex eq $root ) {
print "--- Will run bibtex on modified '$root.aux' file\n";
my $aux_mod_base = $path.$base_tex."-mod";
local $out_fh = new FileHandle "> $aux_mod_base$ext";
if (!$out_fh) { die "Cannot write to '$aux_mod_base$ext'\n"; }
local $level = 0;
fix_aux( $source );
close $out_fh;
$ret = Run_subst( $bibtex_save, 2, undef, "$aux_mod_base.aux", undef, $aux_mod_base );
foreach ( 'bbl', 'blg' ) {
copy "$aux_mod_base.$_", "$path$root.$_";
}
}
else {
$ret = Run_subst( $bibtex_save );
}
return $ret;
}
sub fix_aux {
# Read aux file, outputting flattened version to file handle $out_fh and
# removing \bibdata and \bibstyle lines that were in included .aux files.
my $aux_file = $_[0];
print "Processing '$aux_file'\n";
my $aux_fh = new FileHandle $aux_file;
if (!$aux_fh) { die "$My_name: Couldn't read aux file '$aux_file'\n"; }
$level++;
while (<$aux_fh>) {
if ( ($level > 1) &&
( /^\\bibdata\{(.*)\}/ || /^\\bibstyle\{(.*)\}/ )
)
{ next; }
elsif ( /^\\\@input\{(.*)\}/ ) {
fix_aux( $path.$1 );
next;
}
else {
print $out_fh $_;
}
}
close($aux_fh);
$level--;
}
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