persistent-nodemap: avoid writing nodemap for empty revlog
The format cannot encode the lack of tip_rev.
There is currently nothing known to write such empty nodemap right now, but the
change we are preparing on default reveal this issue. So I had rather fix it on
stable.
histedit: remove superfluous echo() and endwin() calls (
issue6859)
ncurses patchlevel
20231111 started returning an error from endwin() if
called twice without a intervening screen update.
Per Sven Joachim in
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1058041#17: "AFAICS,
invoking curses.echo() and curses.endwin() is superfluous
because curses.wrapper already does that for you, and calling
curses.endwin() twice throws an error with the newer ncurses. Removing
those two lines should fix the problem."