Indent lines problem with tex files

[Ma94xx]

I've noticed that snacks.indent is generating too many indent lines in my .tex documents.
I came across a similar question where the issue was caused by a mismatch between tabstop and shiftwidth. However, in my case, both are set to 4 — so that doesn't seem to be the cause I think.

What's confusing is that indent lines appear correctly in other filetypes I've tested, like .lua and .cpp. The issue seems isolated to LaTeX.

For context: I use latexindent to autoformat my .tex files, but .lua and .cpp files are also autoformatted — and don't show this problem. What's strange is that everything worked perfectly when I first installed it a few weeks ago.

Am I missing something?

In a tex file:

In a lua file:

[drowning-cat]

Can you provide a minimal repro?

-- nvim -u repro.lua <file>.tex

-- repro.lua

vim.env.LAZY_STDPATH = '.repro'
load(vim.fn.system 'curl -s https://raw.githubusercontent.com/folke/lazy.nvim/main/bootstrap.lua')()

require('lazy.minit').repro {
  spec = {
    {
      'folke/snacks.nvim',
      opts = {
        indent = {},
      },
    },
  },
}

Note

Generated by ChatGPT.

\documentclass{article}
\usepackage{amsmath}
\usepackage{enumitem}

\title{Deeply Nested Structures in \LaTeX}
\author{Sample Author}
\date{\today}

\begin{document}

\maketitle

\section{Introduction}
This document demonstrates deep nesting with consistent indentation.

\section{Nested Lists and Environments}
\begin{itemize}
    \item First level item
    \begin{itemize}
        \item Second level item
        \begin{itemize}
            \item Third level item
            \begin{enumerate}
                \item Numbered fourth level
                \begin{enumerate}
                    \item Numbered fifth level
                    \begin{description}
                        \item[Key] Description at sixth level
                        \begin{itemize}
                            \item Seventh level (back to bullets)
                        \end{itemize}
                    \end{description}
                \end{enumerate}
            \end{enumerate}
        \end{itemize}
    \end{itemize}
\end{itemize}

\section{Nested Math Environments}
\begin{equation}
    \left[
        \begin{array}{cc}
            a & b \\
            \left( 
                \begin{array}{c}
                    x \\
                    y
                \end{array}
            \right) &
            \left\{
                \begin{array}{l}
                    x + y \\
                    x - y
                \end{array}
            \right.
        \end{array}
    \right]
\end{equation}

\section{Custom Environment Example}

\newenvironment{deepblock}[1]
{
    \begin{quote}
        \textbf{#1}
        \begin{itemize}
}
{
        \end{itemize}
    \end{quote}
}

\begin{deepblock}{Block Title}
    \item First
    \item Second
    \begin{itemize}
        \item Nested deeper
        \begin{itemize}
            \item Deepest point
        \end{itemize}
    \end{itemize}
\end{deepblock}

\end{document}

[Ma94xx]

Thanks for looking into it anyway :)
I’d find it quite strange if the font or OS were causing the issue, since it works fine in other filetypes. For reference, here’s my setup:

OS: Arch Linux x86_64
Kernel: 6.15.3-arch1-1
Terminal: st
WM: dwm
Font: DejaVuSansMono

[Ma94xx]

I checked my .latexindent.yaml configuration and found that I'm using a single tab "\t" for the default indent.
However, when I change it to use two spaces instead, I get the following result, which seems better, but kind of "cutted"?:

[drowning-cat]

Your issue hits every feature I don’t use. I'm trying to better understand how indent works:

{
  'folke/snacks.nvim',
  ---@type snacks.Config
  opts = {
    indent = {
      indent = { -- Display tabstop&shiftwidth
        enabled = true,
      },
      scope = { -- Display current scope
        enabled = true,
        underline = true,
      },
      -- ...
    },
  },
},

I don't think it's possible to display all scopes instead of fixed step indentation.

[drowning-cat]

To be precise, you simply need to match tabstop (ts) and shiftwidth (sw) with the actual indentation used by your formatter.

In your case, you had ts=4 and sw=4, but the actual indentation used was 5 spaces. This means that Snacks displayed an indent every 4 spaces, and when the cursor was on the current scope (5 spaces), it also highlighted that position, resulting in a double border.

[Ma94xx]

I'm really thankful for your help and your time!

I've tested just about every combination of shiftwidth, tabstop, and expandtab.
I also aligned them with the defaultIndent setting in my .latexindent.yaml, trying both tabs (\t) and various space widths (1, 2, 3, 4). I made sure they either matched tabstop/shiftwidth exactly or were clean multiples.

The best result I could get was a slightly fragmented look — using 2 spaces for the formatter, and setting tabstop and shiftwidth to 4, with expandtab off. Expandtab itself only seems to have a minimal effect in this case.

With any of the other combinations, I keep getting additional indent lines drawn with a noticeable offset.

Honestly, I’m out of ideas at this point 😄

[Ma94xx]

Update: I figured it out - and you were absolutely right! Thank you so much!

It turns out that the .latexindent.yaml file contains multiple places where indentation can be configured. Out of sheer desperation, I read through the file line by line and found an indentRules: section at line 334.

That section defines indentation using tabs again — completely separate from the levels: settings used elsewhere in the file. I didn’t expect that at all... though I probably added it myself a few years ago and completely forgot 😅

Once again, thank you so much for your patience and for helping me through all of this - even though it ended up being one of those silly self-inflicted problems I just couldn’t see!

[drowning-cat]

I'm glad you solved the problem ;)