irssi-0.8.12 on Xterm 242 alt+1, 2, 3... do not work. Prints strange symbols only. Reproducible: Always Steps to Reproduce: 1.$ Xterm 2.$ irssi 3. alt+1 Actual Results: Strange symbols in chat like +- etc. Expected Results: Switch to next chat window
I don't recall any reports for keyboard changes in xterm. But I do recall seeing some other comments recently about irssi - more details might help focus on the problem.
maybe bug should be renamed... Problem remains even witout irssi. Problem is that Alt+/number/ gives character instead of hotkey action.
Xterm has several resources dealing with adding an escape character before another character (or escape sequence). For example (man xterm): eightBitInput, metaSendsEscape, altSendsEscape, altIsNotMeta None of those has changed recently, as far as I recall (though it's possible that some change to OP's resource files have changed - or ongoing breakage from xorg in the xkb configuration, which also is a possibility).
Maybe it never worked in the way I want and this is just like feature request?
Something like that - alt + {arbitrary character} was briefly a feature about ten years ago, and amended to only apply to function- and cursor-keys: http://invisible-island.net/xterm/xterm.log.html#xterm_127
