type _precmd_function_domore

_precmd_function_domore is a shell function from /usr/local/etc/zshrc.d/80-PetaLinux

PS4='+%x:%I> ' zsh -x 2> >(grep precmd_func)

$ grep -n precmd ~/.zshrc
192:precmd_foo() echo foo
$ (PS4='+%x:%I> '; set -x; precmd_foo)
+zsh:2> precmd_foo
+/home/stephane/.zshrc:194> echo foo
foo