22,981 questions
-6
votes
0
answers
50
views
LuaSocket socket.core not found when deploying Lua app to Railway with Nixpacks [closed]
I'm creating an API but facing a lot of trouble deploying it because I'm still new to server deployment. I've been using ChatGPT for help, but I'm not getting any results.
Help me fix this error.
...
- 1
Advice
0
votes
0
replies
66
views
How can I efficiently topologically sort simplices in 3D using an expensive occlusion comparator?
I have created a partial order occlusion relation with incomparabilities on points, line segments, and triangles in 3D which are incapable of partitioning one another, and which do not cyclically ...
- 151
3
votes
1
answer
128
views
3D triangle–triangle partitioning fails when several triangles intersect at a point (Lua)
Edit:
As requested in the comments, here is how to run this code.
Go to the GitHub page and download the folder it links to. Then, make a file called mwe.tex in that folder, and copy the TeX code from ...
- 151
4
votes
1
answer
86
views
How to evaluate arithmetic expression in pseudo‑SQL style (Lua 5.1)
In love2D I have a string that represents a mathematical expression, for example:
local expr1 = "[p35] div [p36]"
local expr2 = "((([p35]*100) div [p36]) mod 100)"
local params = {...
- 638
Advice
0
votes
3
replies
59
views
String manipulation: extract words under brackets
I'm not yet very familiar with the patterns in Lua's string.gsub function.
If I have a string like this:
Fishing Lure(+100 Fishing Skill)(1 hour)
and I want extract only the string "1 hour"...
- 391
-4
votes
2
answers
102
views
Question regarding using : and [] together, Lua
Take the following block of code
function pickrand()
local v = math.random(1,3)
if v==1 then return ‘px' elseif v==2 then return ‘py' elseif v==3 then return 'pb' end
end
prin = {
x = ...
Best practices
0
votes
0
replies
39
views
Lua: install via rockspec a github project, no realease, no version
I'd like to install with rockspec lua-ext but I'm not sure what is the cleanest way to do it via rockspec:
it has no release and luarocks install --local https://github.com/thenumbernine/lua-ext does ...
- 2,594
1
vote
1
answer
50
views
How can I use `chansend()` to update a terminal buffer asynchronously in Neovim?
I have a callback/generator which produces output, possibly after a delay. I'd like to send these outputs to the terminal buffer as they're produced. Here's a mockup:
local term_buf = vim.api....
- 2,838
3
votes
0
answers
65
views
Run multiple test files from master file
I am building a test suite for my Lua application with Busted. I am organizing tests into different files that I would like to run in a given sequence, e.g. low-level unit tests first, up to ...
- 980
3
votes
1
answer
74
views
Explicit formatting of Format date/time regardless of operating system setting
As an an example:
print(os.date("%b"))
This prints "Oct" when running on a computer having date time settings set to English.
When using other language it prints "okt" (...
- 53
5
votes
2
answers
98
views
Is the condition "and true or false" redundant in Lua?
Inside a wiktionary module pages there is a function is_title() defined as:
function export.is_title(val)
if not (val and type(val) == "table") then
return false
end
...
- 537
1
vote
0
answers
38
views
Fluent Bit v4.1.1 – ${tag[1]} variable not set when dynamically naming OpenSearch index
Issue:
I’m using Fluent Bit v4.1.1 to send Docker container logs to OpenSearch.
I want to dynamically extract the project name (e.g., test-project) from the log file path /logs/test-project/... using ...
- 11
0
votes
0
answers
77
views
Running bash script with Lua and Tup causes file permission issues
I am running a legacy C++ build env with Tup, Lua5.4 on Debian13. When I run tup, under any user (also root) there are strange file permission issues. When I debug and do and "ls -l" the ...
- 2,109
1
vote
0
answers
65
views
How to rotate a model?
I have a code for rotating the turret model, but the mesh rotates, but the turret model also has a gun, but it either freezes regardless of the mesh rotation or simply does not rotate
local Players = ...
- 11
1
vote
0
answers
96
views
How setup Neovim for Haxe programming language (LSP and Treesitter)
Hello people on the internet.
I made my own Neovim config https://github.com/Mr-Fox-h/fox-ide and it's a good config, but I want to write codes with Haxe programming language. I installed haxe and ...
- 71
0
votes
0
answers
94
views
Require is returning a nil value in GLua for a module
I'm trying to create a module through the best practice means rather than package.seeall. Below is the code I've used. I'm running into an error where once I run require("mylibrary"), m ...
0
votes
1
answer
54
views
Access parameters from rockspec
I have a rockspec that requires compiling some C sources. I am using the make backend to do that, and my Makefile has a way to switch compile and install flags depending on variables passed to it.
Now,...
- 980
2
votes
1
answer
75
views
luarocks init not injecting project tree into lua wrapper package.path
When I run luarocks init in a directory that has a rockspec file, the tree in lua_modules/share/lua/5.1 for my project isn't added to the project.path of the generated ./lua wrapper so modules ...
- 868
0
votes
0
answers
86
views
mkottman/AndroLua: building from sources
I have a Lua integration inside my Android Application (basically printing to Bluetooth printer routines). I already has built .so libraries of AndroLua and it works fine. Recently Google sent a note ...
- 333
0
votes
0
answers
84
views
How can I change the camera's CFrame while still having standard camera controls?
I'm trying to invert the depth of the camera (multiplying the camera's CFrame by (0,0,0, -1,0,0,0,1,0,0,0,1). To my knowledge, the only way I can implement this is by setting the camera type to ...
- 1
0
votes
0
answers
81
views
Error loading lsqlite3 module for love2D due to "symbol not being found"
Follow-up to this question
My current project folder includes the main.lua file, a .db file, , a sqlite.lua file from this somewhat old page, and a lsqlite3.so file copied from my homebrew folder. ...
- 95
1
vote
0
answers
94
views
how to avoid error loading lsqlite3 module for Love2D?
Important edit: it think that the issue might come from the fact that I'm using a Mac that uses an Arm64 processor. However, I'm not entirely sure since I don't know what that means.
I'm trying to use ...
- 95
0
votes
0
answers
53
views
Execution just stops after taking a screenshot
This is a minimal version of my init.lua hammerspoon config
https://gist.github.com/Touniouk/9b7f61f5d283a1514a386b1068ec8810
My goal is to
Take a screenshot of an app
Read some text on it
Click a ...
- 397
0
votes
0
answers
148
views
How do I create larger structs using tables in lua? (in the pico-8 game engine)
I am making a card game and im now revamping how individual card information is stored.
a single card would have the following values:
x, y, suit, number, state
this is to be stored in a deck array ...
1
vote
1
answer
157
views
Added biome.json with default config, formatting suddenly works - did vtsls switch to biome automatically?
I was trying to get semicolons added automatically using <leader>fm in NvChad. It wasn't working before, so I added a biome.json file to my project directory:
{
"javascript": {
&...
- 18.2k
0
votes
0
answers
87
views
Ball bounces off walls but not off tiles in PICO-8
I’m working on a small PICO-8 project where multiple balls/pixels should bounce around the screen.
The wall collisions work fine, but when I try to make the balls bounce off map tiles (with flag 0 = ...
- 1
5
votes
1
answer
123
views
In Lua, why is this example (from Programming in Lua 1st edition) true?
I use SQL and R at work but I am brand new to Lua. (I'd like to learn it, among other new skills, so that I can eventually make mods for Baldur's Gate 3. Not sure that makes a difference but this is ...
- 53
1
vote
1
answer
97
views
How could I zoom into a point (mouse positon) on a grid canvas?
(I've seen some similar-ish questions to mine, but they do not really apply to my case.)
I am scripting on a custom canvas for a program plugin using Lua. Drawn onto the canvas is a grid of squares, ...
- 23
0
votes
1
answer
105
views
How to capture the plaintext chunk passed to loadstring in an obfuscated Lua (Luraph-like) stub (Lua 5.1/LuaJIT, no debug lib)
I’m working with an old, unsupported Lua addon (Lua 5.1/LuaJIT). Its entry script appears to be a Luraph-style bootstrap that eventually calls loadstring with a decompressed chunk. My goal is not to ...
0
votes
0
answers
150
views
Can't get Avante.nvim to accept suggestions with custom keybindings
I'm trying to configure Avante.nvim to work with GitHub Copilot, but I can't get the suggestion acceptance keybinding to work. The suggestions appear correctly in insert mode (in gray text), but none ...
- 10.1k
3
votes
1
answer
98
views
How do variable binds/closures work in lua
I'm a bit confused on how 'binding' works in lua. The following function (neovim) defines a callback within vim.keymap.set() to be called later involving the bufnr from the outer scope. Now coming ...
- 5,374
3
votes
3
answers
153
views
Declaring a variable as 'local' when outside Lua functions
I understand the difference between the scope of local and global variables, but I am confused about the difference and effects of declaring a variable OUTSIDE of Lua functions (or LOVE2D core ...
3
votes
1
answer
136
views
How to run a functions everytime I enter Insert Mode in Nvim?
i am making a small plugin for myself and i just want to run a simple command whenever I enter Insert mode.
Currently i have tried the following
vim.api.nvim_create_autocmd({"InsertEnter"}, {...
- 133
0
votes
0
answers
41
views
Apache lua_mod setup: "lua: Unable to find function fetch_token_hook in <script directory>"
We're trying to run a lua script to hook into fixups phase of a request in an apache server app, but we keep getting the following:
"[Thu Aug 28 09:55:37.099004 2025] [lua:crit] [pid <<pid&...
3
votes
1
answer
98
views
Why is it not possible to extend a function call expression returning multiple values with another value on the right in Lua
Consider this test case.
function test()
return 1, 2, 3
end
-- OK: prints 4 1 2 3
print (4, test())
-- NOT OK: prints 1 4
print (test(), 4)
Why do values returned from a function in a function ...
- 7,957
1
vote
1
answer
85
views
Expression returning different values when using/not using math.floor()
I have an expression: ((12 / 10) - 1) * 10)
I need to floor the result to convert it into an int. When I do that with math.floor(), I get different results:
-- a. Unfloored value
print(((12 / 10) - 1) ...
- 23
0
votes
0
answers
112
views
Nmap running with very trivial script as argument not throwing expected string expected to be triggered depending on TCP port state (open/closed)
I failed trying to get to work a very simple Lua script inside a testy2closed.nse (Nmap Script Engine).
Tried on Mac and Linux, neither worked. Nor adding the script to the nmap scripts path (...
- 423
0
votes
0
answers
49
views
Zerobrane Path not finding files...how do I set it?
I'm using Zerobrane Studio (2.00; MobDebug 0.803) on Windows 11. When I try to run/debug some code, I get:
: module 'strict' not found:
no field package.preload['strict']
no file '.\strict.lua'...
- 390
0
votes
1
answer
63
views
luarocks install falls back to root manifest
I'm working on a Sentry SDK for Lua: https://github.com/getsentry/sentry-lua
I'm trying to install it via luarocks. This is the package on luarocks: https://luarocks.org/modules/sentry/sentry
Note ...
- 6,473
2
votes
3
answers
122
views
How to overlap patterns with gsub?
In a string like "30 x 40 x 900" or "3 x 4 x 90", I need to replace the space characters around the "x" - if present - by a special non-breaking character. I formulated:
...
- 79
0
votes
0
answers
67
views
Is it possible to have RPZ File to apply for specific IPs in POWERDNS RECURSOR via Lua Scripting?
I need to apply different RPZ files based on client IP address. I load all RPZ files at startup, then try to discard policies not meant for the requesting IP, but it's not working. Will be needing ...
1
vote
1
answer
351
views
How to create custom snippets using luasnip
I want to make my custom snippets in latex files. I am using luasnip and this is my config:
{
"hrsh7th/nvim-cmp",
config = function()
require("luasnip.loaders.from_vscode")....
- 11
4
votes
2
answers
138
views
Issue when executing a function from a class
I'm running into some confusion in trying to make a button that executes a function from another class I have.
Firstly, i have a "button" class that i made, in which one of the parameters is ...
- 95
2
votes
1
answer
106
views
Why doesn't divsion by zero return an error (using pcall) in Lua?
The following code should result in an error message (runtime error):
local status, result = pcall(function()
return 10 / 0
end)
if not status then
print("Error during division:", ...
2
votes
1
answer
105
views
neovim 'vim.opt.list' not taking effect
I am using neovim on Linux.
NVIM v0.11.3
Build type: Release
LuaJIT 2.1.1741730670
In my options.lua I have vim.opt.list = false and vim.opt.listchars = { tab = '»'}
I have a keymap set to toggle ...
- 2,618
0
votes
1
answer
264
views
Is it possible to override APISIX default response using a custom plugin?
Apache APISIX by default gives inconsistent responses when returning errors. Here are some examples:
404 Not Found:
{"error_msg":"404 Route Not Found"}
502 Bad Gateway:
<html&...
- 2,572
3
votes
0
answers
150
views
How to Give badge when dialogue is finished [closed]
In my game i want it so that when you talk to npc it gives a badge but I want it to only give the badge at the end of the conversation
Npc name: Npc
so theres a dialogue in his head
after the player ...
- 45
0
votes
0
answers
79
views
Is there a way to synchronize love.system.setClipboardText() with browser's clipboard
So I just hosted my first game in web using love.js but the text area where one can paste or copy from only works if the in game text is copied, meaning I cannot paste text copied text from another ...
3
votes
1
answer
101
views
Love2d flickering edge on player movement
I created a simple code using Love2d that display a map created with Tiled (pixel art style), and draw a square as a player who can freely move across the map. However there is some jitter or ...
- 45
0
votes
0
answers
102
views
Roblox studio, Tool equipped
I'm trying to make it so I can save the player and character in variables in Roblox Studios, to do that I'm trying to use a Tool.Equipped event so I can get the parent once the tool is equipped (...
- 3