Problem: MS-Windows: using ConPTY even though it is not stable.
Solution: When ConPTY version is unstable, prefer using winpty. (Ken Takata,
closes#3949)
Problem: MS-Windows: inconsistent selection of winpty/conpty.
Solution: Name option 'termwintype', use ++type argument and "term_pty" for
term_start(). (Hirohito Higashi, closes#3915)
Problem: Cannot have a local value for 'scrolloff' and 'sidescrolloff'.
(Gary Holloway)
Solution: Make 'scrolloff' and 'sidescrolloff' global-local. (mostly by
Aron Widforss, closes#3539)
Problem: Showing two characters for tab is limited.
Solution: Allow for a third character for "tab:" in 'listchars'. (Nathaniel
Braun, Ken Takata, closes#3810)
Problem: Tabline is not always redrawn when something that is used in
'tabline' changes.
Solution: Add ":redrawtabline" so that a plugin can at least cause the
redraw when needed.
Problem: Cannot build without the sandbox.
Solution: Set the secure option instead of using the sandbox. Also restrict
the characters from 'spelllang' that are used for LANG.vim.
(suggested by Yasuhiro Matsumoto)
Problem: Internal diff isn't used by default as advertised.
Solution: Add "internal" to the default value of 'diffopt'.
Also add couple of files missing from the distribution.
Problem: Using an external diff program is slow and inflexible.
Solution: Include the xdiff library. (Christian Brabandt, closes#2732)
Use it by default.
Problem: Using a full path is supported for 'directory' but not for
'backupdir'. (Mikolaj Machowski)
Solution: Support 'backupdir' as well. (Christian Brabandt, closes#179)
Problem: Terminal window options are named inconsistently.
Solution: prefix terminal window options with "termwin". Keep the old names
for now as an alias.
Problem: Shell commands in the GUI use a dumb terminal.
Solution: Add the "!" flag to 'guioptions' to execute system commands in a
special terminal window. Only for Unix now.
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)
