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Pandoc filter for cross-references
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pandoc-crossref filter Build status

pandoc-crossref is a pandoc filter for numbering figures, equations, tables and cross-references to them.

The input file (like demo.md) can be converted into HTML, LaTeX, PDF, Markdown or other formats.

Optionally, you can use cleveref for LaTeX/PDF output, e.g. cleveref PDF, cleveref LaTeX, and listings package, e.g. listings PDF, listings LaTeX

You can also enable per-chapter numbering (as with --chapters for latex output). You need to specify -M chapters for non-LaTeX/PDF output however. Examples: HTML, Markdown, LaTeX, PDF.

This work is inspired by pandoc-fignos and pandoc-eqnos by @tomduck.

This package tries to use LaTeX labels and references if output type is LaTeX. It also tries to supplement rudimentary LaTeX configuration that should mimic metadata configuration by setting header-includes variable.

Installation

The easiest option to get pandoc-crossref on Windows, macOS, or Linux, is to download pre-built executables available at the releases page. Bear in mind that those are a product of automated build scripts, and as such, provided as-is, with zero guarantees. Feel free to open issues if those don't work though, I'll try to do what I can.

WARNING: When using pre-built executables, make sure that your pandoc version matches the version pandoc-crossref was built against, otherwise weird stuff will likely happen. Feel free to open issues if there's a new version of pandoc available, for which there are no pandoc-crossref builds.

NOTE: Linux and MacOS binaries are packed with upx. If you don't like the overhead, and don't mind 40-megabyte binaries, you can unpack those manually with upx -d pandoc-crossref. Also please notice that upx-packed binaries can break in some exotic environments, like empty chroot with no access to /proc, etc.

Also, for those feeling adventurous, the automatic builds for the latest commits are available. Latest builds can be found on BinTray.

If you don't trust random binaries downloaded off the Internet (which is completely reasonable), you're welcome to build from source. You have two preferred options for that: building from Hackage with cabal-install (you'll need Haskell platform), or from repository with stack (you'll only need stack and maybe git). See below for build instructions.

If you're completely new to Haskell, the latter, i.e. building from repo with stack, is the easier option in most cases.

Alternatively, you can use a version provided by a third party. At the time of writing, pandoc-crossref is provided on the following platforms (that I am aware of):

  • Arch Linux
  • NixOS or Nix package manager (via nixpkgs.haskellPackages attribute)
  • MacOS (via Homebrew)
  • Any Linux distribution (via Linuxbrew)
  • Gentoo Linux (via gentoo-haskell overlay)

Building from Hackage with cabal-install and Haskell platform

Assuming you already installed Haskell platform by whatever means necessary, you can install pandoc-crossref with cabal.

If you have cabal-install version 3.0 or newer (i.e. cabal --version shows 3.0.x.x), I recommend using new-style install:

cabal v2-update
cabal v2-install --install-method=copy pandoc pandoc-crossref pandoc-citeproc

This will get pandoc-crossref, pandoc and pandoc-citeproc executables copied to $HOME/.cabal/bin (by default, if not, check your cabal config file installdir setting -- find out where your config file is by running cabal help user-config), which you can then add to PATH or copy/move the symlinks where you want them.

On cabal-install version 2.4, it's possible to do the same, albeit you'll have to lose --install-method copy, it will symlink the executables instead of copying those, and it doesn't work on Windows.

On cabal-install version 2.2, it's possible to do the same, albeit you'll need to use cabal update instead of cabal v2-update.

On older cabal-install versions that don't support new-style installs, I highly recommend you use a sandbox for installation, e.g.

cabal update
mkdir pandoc-crossref
cd pandoc-crossref
cabal sandbox init
cabal install pandoc pandoc-crossref pandoc-citeproc

This will get pandoc, pandoc-citeproc, and pandoc-crossref installed into .cabal-sandbox/bin.

Refer to cabal documentation if you need to build a particular version (TL;DR: add --constraint pandoc-crossref==<version> to the installation command)

Building from repo with stack

If you want to build an unreleased version, just fancy building from repo, or don't want to install the Haskell platform, you can clone the repository, check out the commit/tag/branch you want and build with stack.

First of all, get stack if you don't have it already: see the official stack documentation. Note that stack is also included in the Haskell platform, and on Linux it is usually available in your package manager.

If you have git, you can now clone the repository and build:

git clone https://github.com/lierdakil/pandoc-crossref.git
cd pandoc-crossref
git checkout <commit/tag/branch>
stack install

If you don't have git, just download the sources for your preferred commit/branch/tag via the GitHub interface, and run stack install in the directory that contains stack.yaml file.

This will install pandoc-crossef executable to $HOME/.local/bin. You might also want to separately run stack install pandoc pandoc-citeproc in the same directory (i.e. the root of the repository, the one containing stack.yaml file)

Notice Fedora users

cabal-install package is not enough to build pandoc-crossref (see #132). To get a sane Haskell build environment, you need to install the haskell-platform package (dnf install haskell-platform).

While on topic, if you don't want to rebuild pandoc itself from source, make sure you have pandoc and ghc-pandoc-devel dnf packages before attempting to build pandoc-crossref.

Usage

Usage information is available at https://lierdakil.github.com/pandoc-crossref/

Projects

The following projects use this filter:

License

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

See LICENSE for details.

© 2016 Nikolay Yakimov et al

Contributors (per GPL, holders of copyright on their respective contributions):

  • Nikolay Yakimov
  • Raphael Das Gupta
  • Masamichi Hosoda
  • Felix Yan
  • Wlad
  • Wandmalfarbe
  • scoavoux
  • Salim B
  • Matthew Salganik
  • Han Joosten
  • Hadrien Mary
  • Chris Black
  • Bart Mesuere
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