Lua Config For Advanced Shell Scripting

General
1 
Hi there having trouble trying to get the syntax correct. Here’s my hyprlang code block for screenshots. The problem seems to with more complex shell scripting. 

# Region → annotate in satty → auto-copy to clipboard (most useful daily bind)
bind = , XF86SELECTIVESCREENSHOT, exec, grim -g "$(slurp)" - | satty --filename - --copy-command wl-copy --early-exit --fullscreen
# Fullscreen screenshot → annotate → copy
bind = SHIFT, XF86SELECTIVESCREENSHOT, exec, grim - | satty --filename - --copy-command wl-copy --early-exit --fullscreen
# Region → annotate → save to file (with timestamp)
bind = SUPER SHIFT, XF86SELECTIVESCREENSHOT, exec, grim -g "$(slurp)" -t ppm - | satty --filename - --output-filename ~/Pictures/Screenshots/satty-$(date +%Y%m%d-%H%M%S).png
# Quick region capture → save directly (no edit)
bind = CTRL SHIFT, XF86SELECTIVESCREENSHOT, exec, mkdir -p ~/Pictures/Screenshots && grim -g "$(slurp)" ~/Pictures/Screenshots/screenshot-$(date +%Y-%m-%d-%H%M%S).png

hl.bind("XF86SELECTIVESCREENSHOT",
        h1.dsp.exec_cmd("grim -g "$(slurp)" - | satty --filename - --copy-command wl-copy --early-exit --fullscreen"))

hl.bind("SHIFT + XF86SELECTIVESCREENSHOT",
        h1.dsp.exec_cmd("grim - | satty --filename - --copy-command wl-copy --early-exit --fullscreen"))

hl.bind("SUPER + SHIFT + XF86SELECTIVESCREENSHOT",
        h1.dsp.exec_cmd("grim -g "$(slurp)" -t ppm - | satty --filename - --output-filename ~/Pictures/Screenshots/satty-$(date +%Y%m%d-%H%M%S).png"))

hl.bind("CTRL + SHIFT = XF86SELECTIVESCREENSHOT",
        h1.dsp.exec_cmd("mkdir -p ~/Pictures/Screenshots && grim -g "$(slurp)" ~/Pictures/Screenshots/screenshot-$(date +%Y-%m-%d-%H%M%S).png"))

What am I missing here? Surely it’s a Lua and / or shell scripting syntax, escape issue, etc.?

2

Bunch of places you break the string sent to sh.

h1.dsp.exec_cmd("mkdir -p ~/Pictures/Screenshots && grim -g "$(slurp)" ~/Pictures/Screenshots/screenshot-$(date +%Y-%m-%d-%H%M%S).png"))
3

Got it working. The key is Lua [[ ]].

hl.bind(“XF86SELECTIVESCREENSHOT”,
hl.dsp.exec_cmd([[grim -g “$(slurp)” - | satty --filename - --copy-command wl-copy --early-exit --fullscreen]]))

hl.bind(“SHIFT + XF86SELECTIVESCREENSHOT”,
hl.dsp.exec_cmd([[grim - | satty --filename - --copy-command wl-copy --early-exit --fullscreen]]))

hl.bind(“SUPER + SHIFT + XF86SELECTIVESCREENSHOT”,
hl.dsp.exec_cmd([[grim -g “$(slurp)” -t ppm - | satty --filename - --output-filename ~/Pictures/Screenshots/satty-$(date +%Y%m%d-%H%M%S).png]]))

hl.bind(“CTRL + SHIFT + XF86SELECTIVESCREENSHOT”,
hl.dsp.exec_cmd([[mkdir -p ~/Pictures/Screenshots && grim -g “$(slurp)” ~/Pictures/Screenshots/screenshot-$(date +%Y-%m-%d-%H%M%S).png]]))

4

You can use backslashes in lua if you only have quotes

local run_cmd      = "WOFI_RUN=$(wofi --dmenu) ; [ -n \"$WOFI_RUN\" ] && alacritty -e bash --rcfile ~/.aliases -ic \"$WOFI_RUN ; echo ; read -n 1 -p 'Press any key to Exit ...' wait\""

Also it’s better to use with variables if you have a very long command with concatenation like operator .. in lua like this

local private_term = "HOME=/tmp HISTFILE=/dev/null " .. terminal .. config_opts .. " --working-directory /tmp -e bash --rcfile ~/.aliases"

Also syntax with [[ ]] also valid as stated.