Problem: If $SHELL contains a space then the default value of 'shell' is
incorrect. (Matthew Horan)
Solution: Escape spaces in $SHELL. (Christian Brabandt, closes#459)
Problem: It is difficult to set the python home directory properly for
Python 2.7 and 3.5 since both use $PYTHONHOME.
Solution: Add the 'pythonhome' and 'pythonthreehome' options. (Kazuki
Sakamoto, closes#1266)
Problem: No error when settting 'renderoptions' to an invalid value before
starting the GUI.
Solution: Always check the value. (Ken Takata, closes#2413)
Problem: Options test fails when using Motif or GTK GUI.
Solution: Use "fixed" instead of "fixedsys" for Unix. Don't try "xxx" for
guifonteset. Don't set 'termencoding' to anything but "utf-8" for
GTK. Give an error if 'termencoding' can't be converted.
Problem: Cannot use imactivatefunc() unless compiled with +xim.
Solution: Allow using imactivatefunc() when not compiled with +xim.
(Yasuhiro Matsumoto, closes#2349)
Problem: balloon_show() only works in terminal when compiled with the GUI.
Solution: Add FEAT_BEVAL_GUI and refactor to move common code out of the GUI
specific file.
Problem: Cannot use 'balloonexpr' in a terminal.
Solution: Add 'balloonevalterm' and add code to handle mouse movements in a
terminal. Initial implementation for Unix with GUI.
Problem: ":set scroll&" often gives an error.
Solution: Don't use a fixed default value, use half the window height. Add a
test. (Ozaki Kiichi, closes#2104)
Problem: Mac features are confusing.
Solution: Make feature names more consistent, add "osxdarwin". Rename
feature flags, cleanup Mac code. (Kazunobu Kuriyama, closes#2178)
Problem: FEAT_WINDOWS adds a lot of #ifdefs while it is nearly always
enabled and only adds 7% to the binary size of the tiny build.
Solution: Graduate FEAT_WINDOWS.
Problem: $TERM names starting with "putty" and "cygwin" are likely to have
a dark background, but are not recognized.
Solution: Only check the first few characters of $TERM to match "putty" or
"cygwin". (Christian Brabandt)
Problem: Setting 'encoding' makes 'printheader' invalid.
Solution: Do not translate the default value of 'printheader'. (Yasuhiro
Matsumoto, closes#2026)
Problem: The cursor shape is not reset after it was changed in a terminal.
Solution: Request the original cursor shape and restore it. Add t_RS.
Do not add t_SH for now, it does not work properly.
Problem: winpty.dll name is fixed.
Solution: Add the 'winptydll' option. Make the default name depend on
whether it is a 32-bit or 64-bit build. (idea by Yasuhiro
Matsumoto, closes#1978)
Problem: Options of a buffer for a terminal window are not set properly.
Solution: Add "terminal" value for 'buftype'. Make 'buftype' and
'bufhidden' not depend on the quickfix feature.
Also set the buffer name and show "running" or "finished" in the
window title.
Problem: Not easy to start Vim cleanly without changing the viminfo file.
Not possible to know whether the -i command line flag was used.
Solution: Add the --clean command line argument. Add the 'viminfofile'
option. Add "-u DEFAULTS".
Problem: Problems with autocommands when opening help.
Solution: Avoid using invalid "varp" value. Allow using :wincmd if buffer
is locked. (closes#1806, closes#1804)
