minted environment is not detected

[habamax]

Description

When minted block has additional options like breaklines it is not detected and not highlighted by vimtex.

Steps to reproduce

1. vim -u minimal.vim minimum.tex
2. check syntax highlighting of the minted block

minimal.vim

set nocompatible
let &runtimepath  = '~/.vim/bundle/vimtex,' . &runtimepath
let &runtimepath .= ',~/.vim/bundle/vimtex/after'
filetype plugin indent on
syntax enable
let g:vimtex_compiler_latexrun_engines = {'_': 'lualatex'}
let g:vimtex_compiler_latexmk_engines = {'_': '-lualatex'}
let g:vimtex_compiler_latexmk = {
            \ 'options' : [
                \   '-shell-escape',
                \   '-verbose',
                \   '-file-line-error',
                \   '-synctex=1',
                \   '-interaction=nonstopmode',
                \ ],
                \}
let g:vimtex_syntax_packages = {'minted': {'load': 2}}

minimal.tex

\documentclass{minimal}
\begin{document}
\begin{minted}[breaklines]{python}
import numpy as np

def incmatrix(genl1,genl2):
    m = len(genl1)
    n = len(genl2)
    M = None #to become the incidence matrix
    VT = np.zeros((n*m,1), int)  #dummy variable
\end{minted}
\end{document}

Expected behavior

Minted block is highlighted:

Actual behavior

Minted block is not highlighted:

Do you use a latexmkrc file?

No

VimtexInfo

System info
  OS: Microsoft Windows 10 Pro (10.0.19041 N/A Build 19041)
  Vim version: VIM 8.2 (1-3360)
  Has clientserver: true
  Servername: GVIM1

VimTeX project: minimal
  base: minimal.tex
  root: C:\Users\maksim.kim\temp
  tex: C:\Users\maksim.kim\temp\minimal.tex
  out: 
  log: 
  aux: 
  fls: 
  main parser: current file verified
  compiler: latexmk
    configuration: 
      continuous: 1
      callback: 1
      latexmk options:
        -shell-escape
        -verbose
        -file-line-error
        -synctex=1
        -interaction=nonstopmode
      latexmk engine: -lualatex
  viewer: General
  qf: LaTeX logfile
    addqflist: 70
    fix_paths: 71
    set_errorformat: 69
  document class: minimal

[habamax]

Basically this is not highlighted:

But if I remove [optionsblock] and :VimtexReload, it is:

And it is not only breaklines:

[lervag]

Thanks for the good issue description! One minor detail: I believe you need \usepackage{minted} in the minimal example for this to be complete.

Also, to add more context to the issue: The problem seems to be related to how VimTeX parses the document for the nested syntax groups needed by minted. Notice how the following works as expected:

\documentclass{minimal}
\usepackage{minted}

\begin{document}

\begin{minted}{python}
import numpy as np

def incmatrix(genl1,genl2):
    m = len(genl1)
    n = len(genl2)
    M = None #to become the incidence matrix
    VT = np.zeros((n*m,1), int)  #dummy variable
\end{minted}

\begin{minted}[breaklines]{python}
import numpy as np

def incmatrix(genl1,genl2):
    m = len(genl1)
    n = len(genl2)
    M = None #to become the incidence matrix
    VT = np.zeros((n*m,1), int)  #dummy variable
\end{minted}

\end{document}

If we delete the first minted environment and reload (\lx), then one will notice that the nested highlighting is broken.

So, I believe I understand the problem and I should be able to fix it.

[lervag]

Please test now.

[habamax]

I believe you need \usepackage{minted}

Yes, indeed. That is why for the sake of minimal.tex I have added following setting:

let g:vimtex_syntax_packages = {'minted': {'load': 2}}

[habamax]

Works like a charm, thank you!

[lervag]

I believe you need \usepackage{minted}

Yes, indeed. That is why for the sake of minimal.tex I have added following setting:

let g:vimtex_syntax_packages = {'minted': {'load': 2}}

Good point! :)

Glad to hear it works!