Problem:    Viminfo does not merge file marks properly.
Solution:   Use a timestamp.  Add the :clearjumps command.

Problem:    Missing "void" for functions without argument.
Solution:   Add "void". (Hirohito Higashi)

Problem:    Command line editing is not tested much.
Solution:   Add tests for expanding the file name and 'wildmenu'.

Problem:    Ruby 2.4.0 unifies Fixnum and Bignum into Integer.
Solution:   Use rb_cInteger. (Weiong Mao)

Problem:    vim_time() not included when needed.
Solution:   Adjust #ifdef.

Problem:    Missing test changes.
Solution:   Update viminfo test.

Problem:    Register contents is not merged when writing viminfo.
Solution:   Use timestamps for register contents.

Problem:    Not enough testing for parsing viminfo lines.
Solution:   Add test with viminfo lines in bad syntax.  Fix memory leak.

Problem:    History lines read from viminfo in different encoding than when
            writing are not converted.
Solution:   Convert the history lines.

Problem:    No proper test for what 7.4.1906 fixes.
Solution:   Add a test for reading many lines.

Problem:    The effect of the PopupMenu autocommand isn't directly visible.
Solution:   Call gui_update_menus() before displaying the popup menu. (Shane
            Harper, closs #855)

Problem:    Executing autocommands while using the signal stack has a high
            chance of crashing Vim.
Solution:   Don't invoke autocommands when on the signal stack.

Problem:    When ":doautocmd" is used modelines are used even when no
            autocommands were executed. (Daniel Hahler)
Solution:   Skip processing modelines. (closes #854)

Problem:    No test for using setqflist() on an older quickfix list.
Solution:   Add a couple of tests.

Problem:    Recent history lines may be lost when exiting Vim.
Solution:   Merge history using the timestamp.

Problem:    Tests using external command to delete directory.
Solution:   Use delete().

Problem:    Doubled semicolons.
Solution:   Reduce to one. (Dominique Pelle)

Problem:    Netbeans uses uninitialzed pointer and freed memory.
Solution:   Set "buffer" at the right place (hint by Ken Takata)

Problem:    Warnings from 64 bit compiler.
Solution:   Change type to size_t. (Mike Williams)

Problem:    Collapsing channel buffers and searching for NL does not work
            properly. (Xavier de Gary, Ramel Eshed)
Solution:   Do not assume the buffer contains a NUL or not.  Change NUL bytes
            to NL to avoid the string is truncated.

Problem:    Some compilers can't handle a double semicolon.
Solution:   Remove one semicolon.

Problem:    Build fails.
Solution:   Add missing changes.

Problem:    When writing viminfo merging current history with history in
            viminfo may drop recent history entries.
Solution:   Add new format for viminfo lines, use it for history entries.  Use
            a timestamp for ordering the entries. Add test_settime().
            Add the viminfo version.  Does not do merging on timestamp yet.

Problem:    No test for collapsing buffers for a channel.  Some text is lost.
Solution:   Add a simple test.  Set rq_buflen correctly.

Problem:    Win32: the "Disabled" menu items would appear enabled.
Solution:   Use submenu_id if there is a parent. (Shane Harper, closes #834)

Problem:    Using CTRL-] in the help on "{address}." doesn't work.
Solution:   Recognize an item in {}. (Hirohito Higashi, closes #814)

Problem:    GTK 3: cursor blinking doesn't work well.
Solution:   Instead of gui_gtk_window_clear() use gui_mch_clear_block().
            (Kazunobu Kuriyama)

Problem:    User commands don't support modifiers.
Solution:   Add the <mods> item. (Yegappan Lakshmanan, closes #829)

Problem:    Various typos, long lines and style mistakes.
Solution:   Fix the typos, wrap lines, improve style.

Problem:    Invoking mark_adjust() when adding a new line below the last line
            is pointless.
Solution:   Skip calling mark_adjust() when appending below the last line.

Problem:    Cannot use a window ID where a window number is expected.
Solution:   Add LOWEST_WIN_ID, so that the window ID can be used where a
            number is expected.

Problem:    Cannot get the window ID for a mouse click.
Solution:   Add v:mouse_winid.

Problem:    Cannot easily get the window ID for a buffer.
Solution:   Add bufwinid().

Problem:    balloon eval only gets the window number, not the ID.
Solution:   Add v:beval_winid.

Problem:    Channel reading very long lines is slow.
Solution:   Collapse multiple buffers until a NL is found.

Problem:    GUI: When channel data is received the cursor blinking is
            interrupted.  (Ramel Eshed)
Solution:   Don't update the cursor when it is blinking.

Problem:    When umask is set to 0177 Vim can't create temp files. (Lcd)
Solution:   Also correct umask when using mkdtemp().

Problem:    Wrong computation of remaining wait time in RealWaitForChar()
Solution:   Remember the original waiting time.