love error explorer

by kira

version 0.0.9

an interactive error screen for the love2d game engine.

on error, shows the stack, local variables, and the source code when available.

the newest version should be available here.

usage

require 'error_explorer'

include error_explorer.lua in your project and require it somewhere near the start of your program

when an error happens, press up and down (or k and j) to move up and down on the stack, click on tables in the variable view to expand them, and scroll with the mousewheel.

you can provide an optional table when requiring error explorer to provide options:

require 'error_explorer' {
  -- change the limit of stack depth (default 20)
  stack_limit = 20,

  -- provide custom font for error / stack trace / variables
  error_font = love.graphics.newFont (16),

  -- provide custom font for source code
  source_font = love.graphics.newFont (12),

  -- provide `open_editor` to run a command when
  -- clicking a source line (disabled in fused builds,
  -- and when running from a file ending in .love, but
  -- it's safer to remove this when distributing)
  open_editor = function (filename, line)
    -- for example using neovim remote
    io.popen ('nvr --nostart ' .. filename .. ' +' .. line)
  end,
}

version history

version 0.0.9:

• don't error when message is too long to fit on-screen

version 0.0.8:

• control-c to copy the error and traceback

version 0.0.7:

• collapse multiline variable values to one line

version 0.0.6:

• fix issue when the mouse module isn't available

version 0.0.5:

• added options table for configuring:
  • stack limit
  • fonts
  • optional "open in editor" action
• use less cpu when idle

version 0.0.4:

• fix for non-string keys and multiline keys

version 0.0.3:

• handle when source file isn't available

version 0.0.2:

• automatically select the right stack frame at start
• don't print full stack contents to terminal by default

version 0.0.1:

• initial release