mod_admin_shell: Allow "*" as substitute for 'nil' for easier CLI usage Since prosodyctl shell with additional arguments assumes the first two are a section:command() and any following arguments are strings, passing a bare 'nil' is not possible. In order to avoid delving into this rabbit hole, instead produce a token that alone is not really a legal JID for use as wildcard.

syntax: glob
.hgignore
.luacheckcache
data
local
www_files
html/*
prosody.lua
prosody.cfg.lua
prosody.version
config.unix
*.patch
*.diff
*.orig
*.rej
*.save
*~
*.o
*.so
*.install
*.pid
*.log
*.err
*.debug
*.dll
*.exp
*.lib
*.obj
luacov.report.out
luacov.report.out.index
luacov.stats.out