kandi X-RAY | bibtool Summary
kandi X-RAY | bibtool Summary
BibTeX provides an easy to use means to integrate citations and bibliographies into LaTeX documents. But the user is left alone with the management of the BibTeX files. The program BibTool is intended to fill this gap. BibTool allows the manipulation of BibTeX files which goes beyond the possibilities -- and intentions -- of BibTeX. The possibilities of BibTool include. BibTool contains a documentation written in LaTeX of more than 80 pages (and still growing). BibTool is written in C and has been compiled on various operating systems like flavors of Unix and MSDOG machines. It is distributed in source code. No compiled versions are available from the author (Useless to ask!).
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QUESTION
I need to match the values of key = value
pairs in BibTeX files, which can contain arbitrarily nested braces, delimited by braces. I've got as far as matching at most two deep nested curly braces, like {some {stuff} like {this}}
with the kludgey:
ANSWER
Answered 2020-Jul-17 at 14:32After perusing Lenz' "Parsing with Perl 6 Regexes and Grammars" (Apress, 2017), I realized the "regex" machinery (based on backtracking) might actually be a lot more capable than officially admitted, as a regex can call another, and nowhere do I see a prohibition on recursive calls.
Before digging in, a bit of context free grammars: A way to describing nested braces (and nothing else) is with the grammar:
S -> { S } S |
I.e., nested braces are either an opening brace, nested braces, a closing brace, more nested braces; or nothing whatsoever. This translates more or less directly to Raku (there is no empty regex, fake it by making the construction optional):
QUESTION
This is a cross-post from TeX, but it did not get any answers there. And since I assume the problem has more to do with my understanding of regular expressions (or better, lack thereof) than with LaTeX itself, StackOverflow may have been the better place to ask to begin with.
I would like to use BibTool (which was written in C, if this is of any consequence here) to enclose some strings in a bib
-file in curly braces. The test bib
entry looks like this:
ANSWER
Answered 2020-Apr-23 at 11:48The behavior of .*
by default is to match as many characters as possible. This is called 'greedy matching' in regex terms.
Your pattern is likely matching the following on hitting the first \
:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
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No vulnerabilities reported
Install bibtool
https://www.ctan.org/tex-archive/biblio/bibtex/utils/bibtool
http://www.gerd-neugebauer.de/software/TeX/BibTool
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