By framing this is a matter of patches getting merged, you imply that there is nothing else in the way. In fact, there is no proper terminfo support for true co

By framing this is a matter of patches getting merged, you imply that there is nothing else in the way. In fact, there is no proper terminfo support for true color[1], nor even a standard, canonical way to detect true color support. All that exists now is an encoding convention which has promising adoption but which is by no means uncontroversial[2]. When you couple the portability issue with the increased memory footprint and the lack of a clear and compelling use-case, it is not surprising that this is not a priority for emacs developers. [1] https://lists.gnu.org/archive/html/bug-ncurses/2013-10/msg00007.html https://lists.gnu.org/archive/html/bug-ncurses/2013-10/msg00... [2] http://lists.schmorp.de/pipermail/rxvt-unicode/2013q3/001834.html http://lists.schmorp.de/pipermail/rxvt-unicode/2013q3/001834...