Bug: Multiple typos and reference errors causing runtime failures #39

Summary

Found 4 bugs in the codebase that cause runtime errors or incorrect behavior. All verified with Neovim v0.11.6.

Bug 1: Typo in isMAC() function - maxunic should be macunix

File: lua/insis/utils/global.lua:54

Current code:

function _G.isMAC()
  return vim.fn.has("maxunic") == 1
end

Problem: "maxunic" is a typo. The correct Vim feature flag is "macunix".

Test result:

:echo has("macunix")  --> 1 (correct)
:echo has("maxunic")  --> 0 (typo - always false)

Impact: isMAC() always returns false on macOS systems.

Fix:

function _G.isMAC()
  return vim.fn.has("macunix") == 1
end

Bug 2: isLinux() function has incorrect self reference

File: lua/insis/utils/global.lua:57-58

Current code:

function _G.isLinux(self)
  return not self.is_wsl() and not self.is_mac()
end

Problem: The function takes a self parameter and calls self.is_wsl() and self.is_mac(), but these are global functions named _G.isWSL() and _G.isMAC().

Test result:

ERROR: attempt to index local 'self' (a nil value)

Impact: Calling isLinux() crashes with a nil error.

Fix:

function _G.isLinux()
  return not _G.isWSL() and not _G.isMAC()
end

Bug 3: nvim-tree keymapping references missing keys. prefix

File: lua/insis/plugins/nvim-tree.lua:42-43

Current code:

keymap("n", cfg.copy_absolute_path, api.fs.copy.absolute_path, opts("Copy Absolute Path"))
keymap("n", cfg.toggle_file_info, api.node.show_info_popup, opts("Info"))

Problem: These reference cfg.copy_absolute_path and cfg.toggle_file_info, but in config.lua (lines 213-214) they are defined inside the keys table:

keys = {
  -- ...
  copy_absolute_path = "gy",
  toggle_file_info = "gh",
},

Impact: These two keymaps (gy and gh) silently fail to be set in nvim-tree.

Fix:

keymap("n", cfg.keys.copy_absolute_path, api.fs.copy.absolute_path, opts("Copy Absolute Path"))
keymap("n", cfg.keys.toggle_file_info, api.node.show_info_popup, opts("Info"))

Bug 4: Wrong require path for fix-yank

File: lua/insis/init.lua:27

Current code:

if M.config.fix_windows_clipboard then
  require("utils.fix-yank")
end

Problem: The module path should be "insis.utils.fix-yank" to match the project's module structure. All other requires in the file use the insis. prefix.

Test result:

module 'utils.fix-yank' not found

Impact: Enabling fix_windows_clipboard causes a runtime error.

Fix:

if M.config.fix_windows_clipboard then
  require("insis.utils.fix-yank")
end

Environment

• Neovim: v0.11.6
• InsisVim: v0.11.3
• OS: macOS (Darwin 25.3.0)

I can submit a PR with all fixes if you'd like.