Package: libncursesw5-dev Version: 6.0+20160625-1 Severity: normal Dear Maintainer,
Please consider building ncurses with --enable-ext-mouse. Without this option there is no way to handle mouse scroll down events because in NCURSES_MOUSE_VERSION==1 there is only 32 bits in event and no space to represent button 5. For real-world example where scrolling is needed and does not currently work please see e.g. tig: https://github.com/jonas/tig/issues/321 Starting from ~ ncurses 5.6 there is a way to build with 64 bits-wide events and BUTTON5_* introduced: http://ncurses.scripts.mit.edu/?p=ncurses.git;a=blob;f=configure.in;h=37e1f8ec;hb=HEAD#l1100 http://ncurses.scripts.mit.edu/?p=ncurses.git;a=commitdiff;h=55ccd2b9 Let me quote: ---- 8< ---- + --enable-ext-mouse + This defines NCURSES_MOUSE_VERSION 2, and modifies + the encoding of mouse events to support wheel mice, + which may transmit buttons 4 and 5. This works with + xterm and similar terminal emulators. This requires + ABI 6 because it changes the encoding of mouse + events. ... + --------------------------------------------------------------------- + BUTTON5_PRESSED mouse button 5 down + BUTTON5_RELEASED mouse button 5 up + BUTTON5_CLICKED mouse button 5 clicked + BUTTON5_DOUBLE_CLICKED mouse button 5 double clicked + BUTTON5_TRIPLE_CLICKED mouse button 5 triple clicked + --------------------------------------------------------------------- ---- 8< ---- The downside is that it is an ABI change which means we'll probably need to introduce libncursesw6. However the change is needed for real because sometimes people can only use console without graphics. If we do an ABI change, it will probably make sense to enable other ncurses extensions as well. Thanks beforehand, Kirill -- System Information: Debian Release: stretch/sid APT prefers testing APT policy: (500, 'testing') Architecture: amd64 (x86_64) Kernel: Linux 4.6.0-1-amd64 (SMP w/4 CPU cores) Locale: LANG=ru_RU.UTF-8, LC_CTYPE=ru_RU.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/bash Init: systemd (via /run/systemd/system) Versions of packages libncursesw5-dev depends on: ii libc6-dev [libc-dev] 2.23-5 ii libncursesw5 6.0+20160625-1 ii libtinfo-dev 6.0+20160625-1 ii libtinfo5 6.0+20160625-1 libncursesw5-dev recommends no packages. Versions of packages libncursesw5-dev suggests: ii ncurses-doc 6.0+20160625-1 -- no debconf information
