Problem:    Configure check for AvailabilityMacros.h is wrong.
Solution:   Use AC_CHECK_HEADERS().

Problem:    Availability macros configure check in wrong place.
Solution:   Also check when not using Darwin. Remove version check.

Problem:    Declaration has wrong return type for PyObject_SetAttrString().
Solution:   Use int instead of PyObject. (Andreas Schwab)

Problem:    set_last_cursor() may encounter w_buffer being NULL.  (Matt
            Mkaniaris)
Solution:   Check for NULL.

Problem:    Warnings on 64 bit Windows.
Solution:   Add type casts. (Mike Williams)

Problem:    byteidx() does not work for composing characters.
Solution:   Add byteidxcomp().

Problem:    Mac: Compilation problem with OS X 10.9 Mavericks.
Solution:   Include AvailabilityMacros.h when available. (Kazunobu Kuriyama)

Problem:    Mac: Where availability macros are defined depends on the system.
Solution:   Add a configure check. (Felix Bünemann)

Problem:    Reading past end of the 'stl' string.
Solution:   Don't increment pointer when already at the NUL. (Christian
            Brabandt)

Problem:    Test75 has a wrong header. (ZyX)
Solution:   Fix the text and remove leading ".

Problem:    With 'fo' set to "a2" inserting a space in the first column may
            cause the cursor to jump to the previous line.
Solution:   Handle the case when there is no comment leader properly. (Tor
            Perkins)  Also fix that cursor is in the wrong place when spaces
            get replaced with a Tab.

Problem:    Syntax highlighting a Yaml file causes a crash. (Blake Preston)
Solution:   Copy the pim structure before calling addstate() to avoid it
            becoming invalide when the state list is reallocated.

Problem:    "gn" selects too much for the pattern "\d" when there are two
            lines with a single digit. (Ryan Carney)
Solution:   Adjust the logic of is_one_char(). (Christian Brabandt)

Problem:    In Ex mode, when line numbers are enabled the substitute prompt is
            wrong.
Solution:   Adjust for the line number size. (Benoit Pierre)

Problem:    Recent clang version complains about -fno-strength-reduce.
Solution:   Add a configure check for the clang version. (Kazunobu Kuriyama)

Problem:    When using input() in a function invoked by a mapping it doesn't
            work.
Solution:   Temporarily reset ex_normal_busy. (Yasuhiro Matsumoto)

Problem:    Can't use Tcl 8.6.
Solution:   Change how Tcl_FindExecutable is called. (Jan Nijtmans)

Problem:    substitute() does not work properly when the pattern starts with
            "\ze".
Solution:   Detect an empty match. (Christian Brabandt)

Problem:    Can't build with old MSVC. (Wang Shoulin)
Solution:   Define OPEN_OH_ARGTYPE instead of using intptr_t directly.

Problem:    VMS can't handle long function names.
Solution:   Shorten may_req_ambiguous_character_width. (Samuel Ferencik)

Problem:    When using ":setlocal" for 'spell' and 'spellang' then :spelldump
            doesn't work. (Dimitar Dimitrov)
Solution:   Copy the option variables to the new window used to show the dump.
            (Christian Brabandt)

Problem:    Visual selection does not remain after being copied over. (Axel
            Bender)
Solution:   Move when VIsual_active is reset. (Christian Brabandt)

Problem:    Valgrind error on exit when a script-local variable holds a
            reference to the scope of another script.
Solution:   First clear all variables, then free the scopes. (ZyX)

Problem:    MS-Windows: MSCV10 and earlier can't handle symlinks to a
            directory properly.
Solution:   Add stat_symlink_aware() and wstat_symlink_aware(). (Ken Takata)

Problem:    Using "zw" and "zg" when 'spell' is off give a confusing error
            message. (Gary Johnson)
Solution:   Ignore the error when locating the word.  Explicitly mention what
            word was added. (Christian Brabandt)

Problem:    Using "\ze" in a sub-pattern does not result in the end of the
            match to be set. (Axel Bender)
Solution:   Copy the end of match position when a recursive match was
            successful.

Problem:    NFA engine does not capture group correctly when using \@>. (ZyX)
Solution:   Copy submatches before doing the recursive match.

Problem:    MS-Windows: The mouse pointer flickers when going from command
            line mode to Normal mode.
Solution:   Check for WM_NCMOUSEMOVE. (Ken Takata)

Problem:    Using "p" in Visual block mode only changes the first line.
Solution:   Repeat the put in all text in the block. (Christian Brabandt)

Problem:    When the terminal has only 20 lines test 92 and 93 overwrite the
            input file.
Solution:   Explicitly write test.out. Check that the terminal is large enough
            to run the tests.  (Hirohito Higashi)

Problem:    NFA engine does not match the NUL character. (Jonathon Merz)
Solution:   Ues 0x0a instead of NUL. (Christian Brabandt)

Problem:    ":diffoff!" resets options even when 'diff' is not set. (Charles
            Cooper)
Solution:   Only resets related options in a window where 'diff' is set.

Problem:    The -mno-cygwin argument is no longer supported by Cygwin.
Solution:   Remove the arguments. (Steve Hall)

Problem:    An error in a pattern is reported twice.
Solution:   Remove the retry with the backtracking engine, it won't work.

Problem:    Equivalence classes are not working for multi-byte characters.
Solution:   Copy the rules from the old to the new regexp engine. Add a test
            to check both engines.