Running a command (rather than a .desktop file) from j4dd breaks zplug.

[setpill]

$ j4-dmenu-desktop --dmenu='echo echo' --term='asdfasdfasdf'
Read 62 .desktop files, found 48 apps.
User input is: echo 
/bin/zsh -i -c 'echo'
[zplug] WARNING: pipe syntax is deprecated! Please use 'on' tag instead.
[zplug] WARNING: pipe syntax is deprecated! Please use 'on' tag instead.
[zplug] WARNING: pipe syntax is deprecated! Please use 'on' tag instead.
[zplug] WARNING: pipe syntax is deprecated! Please use 'on' tag instead.
[zplug] WARNING: pipe syntax is deprecated! Please use 'on' tag instead.
[zplug] WARNING: pipe syntax is deprecated! Please use 'on' tag instead.
[zplug] WARNING: pipe syntax is deprecated! Please use 'on' tag instead.
[zplug] WARNING: pipe syntax is deprecated! Please use 'on' tag instead.
[zplug] WARNING: pipe syntax is deprecated! Please use 'on' tag instead.
[zplug] WARNING: pipe syntax is deprecated! Please use 'on' tag instead.
[zplug] WARNING: pipe syntax is deprecated! Please use 'on' tag instead.
[zplug] WARNING: pipe syntax is deprecated! Please use 'on' tag instead.
[zplug] WARNING: pipe syntax is deprecated! Please use 'on' tag instead.
[zplug] WARNING: pipe syntax is deprecated! Please use 'on' tag instead.
[zplug] WARNING: pipe syntax is deprecated! Please use 'on' tag instead.
[zplug] WARNING: pipe syntax is deprecated! Please use 'on' tag instead.
[zplug] WARNING: pipe syntax is deprecated! Please use 'on' tag instead.
[zplug] WARNING: pipe syntax is deprecated! Please use 'on' tag instead.
[zplug] WARNING: pipe syntax is deprecated! Please use 'on' tag instead.
[zplug] WARNING: pipe syntax is deprecated! Please use 'on' tag instead.
Removed '/home/[USER]/.zplug/repos/[SOME REPO DIR]' 
Removed '/home/[USER]/.zplug/repos/[SOME REPO DIR]' 
Removed '/home/[USER]/.zplug/repos/[SOME REPO DIR]' 
Removed '/home/[USER]/.zplug/repos/[SOME REPO DIR]' 
Removed '/home/[USER]/.zplug/repos/[SOME REPO DIR]' 
Removed '/home/[USER]/.zplug/repos/[SOME REPO DIR]' 
Removed '/home/[USER]/.zplug/repos/[SOME REPO DIR]' 
Removed '/home/[USER]/.zplug/repos/[SOME REPO DIR]' 
Removed '/home/[USER]/.zplug/repos/[SOME REPO DIR]' 
Removed '/home/[USER]/.zplug/repos/[SOME REPO DIR]' 
Removed '/home/[USER]/.zplug/repos/[SOME REPO DIR]' 
Removed '/home/[USER]/.zplug/repos/[SOME REPO DIR]' 
Removed '/home/[USER]/.zplug/repos/[SOME REPO DIR]' 
Removed '/home/[USER]/.zplug/repos/[SOME REPO DIR]' 
Removed '/home/[USER]/.zplug/repos/[SOME REPO DIR]' 
Removed '/home/[USER]/.zplug/repos/[SOME REPO DIR]' 
Removed '/home/[USER]/.zplug/repos/[SOME REPO DIR]' 

(NB: username and repo dirs details obfuscated because did not seem relevant. If they might be, please let me know and I can post a list).

[setpill]

I stripped all the plugins from my config and reduced my .zshrc to just install zplug and self-manage it as a plugin.

.zshrc:

# Check if zplug is installed
if [[ ! -d ${HOME}/.zplug ]]; then
	git clone https://github.com/zplug/zplug ${HOME}/.zplug
	source ${HOME}/.zplug/init.zsh && zplug update
else
	source ${HOME}/.zplug/init.zsh
fi

# Self-manage
zplug "zplug/zplug", hook-build:"zplug --self-manage"

zplug check || zplug install
zplug clean --force

# Then, source plugins and add commands to $PATH
zplug load

Repeating the j4dd test above results in:

$ j4-dmenu-desktop --dmenu='echo echo' --term='asdfasdfasdf'
Read 62 .desktop files, found 48 apps.
User input is: echo 
/bin/zsh -i -c 'echo'
[zplug] WARNING: pipe syntax is deprecated! Please use 'on' tag instead.
Removed '[$HOME]/.zplug/repos/zplug/zplug' 
__zplug::core::core::run_interfaces:14: __check__: function definition file not found
__zplug::core::core::run_interfaces:14: __load__: function definition file not found
$

This confirms that it is not the fault of some plugin I am using.

[enkore]

j4dd pretty much just does "exec $SHELL", so if something breaks there, it's usually some kind of configuration issue. I'd raise this with zplug