view.width.max function returning -1 is not respected

[alex-courtis]

Description

When view.width.max is set to a function that returns -1 the view does not resize to fit the content.

: ; git bisect good
776a5cdfac948b490e06f1d1d22c4cb986e40699 is the first bad commit
commit 776a5cdfac948b490e06f1d1d22c4cb986e40699
Author: Šimon Mandlík <simon.mandlik@gmail.com>
Date:   Sun Nov 30 22:29:34 2025 +0100

    feat(#3213): add view.width.lines_excluded option (#3214)

    feat(#3213): add `view.width.lines_excluded` option

 doc/nvim-tree-lua.txt  | 10 ++++++++++
 lua/nvim-tree.lua      | 67 +++++++++++++++++++++++++++++++++++++++++++------------------------
 lua/nvim-tree/view.lua | 33 ++++++++++++++++-----------------
 3 files changed, 69 insertions(+), 41 deletions(-)

I'd be most grateful if you could look into this one @simonmandlik

Neovim version

NVIM v0.11.6
Build type: RelWithDebInfo
LuaJIT 2.1.1767980792
Run "nvim -V1 -v" for more info

Operating system and version

Linux 6.18.9-arch1-2

Windows variant

No response

nvim-tree version

ae16aab

Clean room replication

vim.g.loaded_netrw = 1
vim.g.loaded_netrwPlugin = 1

vim.cmd([[set runtimepath=$VIMRUNTIME]])
vim.cmd([[set packpath=/tmp/nvt-min/site]])
local package_root = "/tmp/nvt-min/site/pack"
local install_path = package_root .. "/packer/start/packer.nvim"
local function load_plugins()
  require("packer").startup({
    {
      "wbthomason/packer.nvim",
      "nvim-tree/nvim-tree.lua",
      "nvim-tree/nvim-web-devicons",
      -- ADD PLUGINS THAT ARE _NECESSARY_ FOR REPRODUCING THE ISSUE
    },
    config = {
      package_root = package_root,
      compile_path = install_path .. "/plugin/packer_compiled.lua",
      display = { non_interactive = true },
    },
  })
end
if vim.fn.isdirectory(install_path) == 0 then
  print("Installing nvim-tree and dependencies.")
  vim.fn.system({ "git", "clone", "--depth=1", "https://github.com/wbthomason/packer.nvim", install_path })
end
load_plugins()
require("packer").sync()
vim.cmd([[autocmd User PackerComplete ++once echo "Ready!" | lua setup()]])
vim.opt.termguicolors = true
vim.opt.cursorline = true

local function view_width_max()
  -- 20 is respected
  -- return 20

  -- -1 is not
  return -1
end

-- MODIFY NVIM-TREE SETTINGS THAT ARE _NECESSARY_ FOR REPRODUCING THE ISSUE
_G.setup = function()
  require("nvim-tree").setup({
    view = {
      width = {
        max = view_width_max,

        -- this is respected
        -- max = -1,
      },
    },
  })
end

Steps to reproduce

:NvimTreeOpen in the nvim-tree source root

Expected behavior

Tree window sizes so that .release-please-manifest.json is completely visible.

Actual behavior

Width is default 30

See file comments:
Function returning 20 is OK
Setting view.width.max to -1 is ok