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.
local data = {}
local getinfo = debug.getinfo;
local function linehook(ev, li)
local S = getinfo(2, "S");
if S and S.source and S.source:match"^@" then
local file = S.source:sub(2);
local lines = data[file];
if not lines then
lines = {};
data[file] = lines;
for line in io.lines(file) do
lines[#lines+1] = line;
end
end
io.stderr:write(ev, " ", file, " ", li, " ", lines[li], "\n");
end
end
debug.sethook(linehook, "l");