Error using arara as compiler-method

[mms-neuro]

Description

Using arara as a compile_method suddenly broke down a few months ago. :VimtexCompile now results in an error - on different computers with different tex-files.

Steps to reproduce

Somehow, github does not like .vim/.tex files (anymore?).
So here the content:

cat minimal.tex

% arara: lualatex
\documentclass{minimal}
\begin{document}
Hello world!
\end{document}

cat minimal.vim

filetype plugin indent on
syntax on
call plug#begin('~/.vim/plugged')
Plug 'lervag/vimtex'
let g:vimtex_compiler_method = 'arara'
call plug#end()

arara has version 7.0.4 (latest on Fedora 38, but not latest in general).

Steps to reproduce:

1. Run nvim -u minimal.vim minimal.tex in bash
2. Execute :VimtexCompile in neovim.

Expected behavior

Document compiles using arara.

Actual behavior

The following error is raised immediately:

Fehler beim Ausführen von "function vimtex#compiler#compile[6]..vimtex#compiler#start[17]..38[10]..52":
Zeile    1:
E714: List benötigt

Sorry - I couldn't change the language from German to English. The translation is:

Error while executing "function vimtex#compiler#compile[6]..vimtex#compiler#start[17]..38[10]..52":
Line   1:
E714: List required

• Calling arara directly in neovim (:!arara %) works perfectly fine.
• Changing the compile-method to latexmk (let g:vimtex_compiler_method = 'latexmk') results also in error-free behaviour.

Do you use a latexmkrc file?

No

VimtexInfo

System info:
  OS: Fedora release 38 (Thirty Eight)
  Vim version: NVIM v0.9.4
  Has clientserver: true
  Servername: /run/user/1000/nvim.56974.0

VimTeX project: minimal
  base: minimal.tex
  root: /home/matthiasms
  tex: /home/matthiasms/minimal.tex
  main parser: current file verified
  document class: minimal
  compiler: arara
    options:
      --log
  viewer: General
  qf method: LaTeX logfile

[muwizayeon]

I have the same situation here with my own LaTeX files.

VimtexInfo

System info:
  OS: Ubuntu 22.04.3 LTS
  Vim version: NVIM v0.10.0-dev-2000+g6fa0f303d
  Has clientserver: true
  Servername: /run/user/1001/nvim.31564.0

VimTeX project: syllabus_main
  base: syllabus_main.tex
  root: /home/muwizayeon/Projects/UCM/dsa5200/syllabus
  tex: /home/muwizayeon/Projects/UCM/dsa5200/syllabus/syllabus_main.tex
  main parser: current file verified
  document class: article
  source files:
    syllabus_main.tex
    title_page.tex
  compiler: arara
    options:
      --log
  viewer: General
  qf method: LaTeX logfile

The actual behavior is the same as the ones @mms-neuro. What I found is that

• the function join in call b:vimtex.compiler.start(expandcmd(join(a:000))) of vimtex#compiler#start(...) in compiler.vim returns an error E714: List required even though a:000 is the empty list.

I am not familiar with the Vimtex script, so it is only what I figured out now.

[mms-neuro]

Thanks for the tip!

I think the problem comes from 06e1767 which makes also sense time-wise.

The problem ist the join(a:opts) in

vimtex/autoload/vimtex/compiler/arara.vim

Line 28 in 06e1767

\ . ' ' . join(a:opts)

- removing the join to a:opts (as is done for the other compile methods) solves the problem for me.

[mms-neuro]

I created a pull request which should fix the problem.

[lervag]

Thanks! And sorry for introducing this bug; clearly an oversight by me during an earlier refactoring.

[mms-neuro]

No worries - thanks for the amazing software and the effort you put into it!