Problem: Using function() with a name will find another function when it is
redefined.
Solution: Add funcref(). Refer to lambda using a partial. Fix several
reference counting issues.
Problem: Using submatch() in a lambda passed to substitute() is verbose.
Solution: Use a static list and pass it as an optional argument to the
function. Fix memory leak.
Problem: Some character classes may differ between systems. On OS/X the
regexp test fails.
Solution: Make this less dependent on the system. (idea by Kazunobu Kuriyama)
Problem: Leaking memory when there is a cycle involving a job and a
partial.
Solution: Add a copyID to job and channel. Set references in items referred
by them. Go through all jobs and channels to find unreferenced
items. Also, decrement reference counts when garbage collecting.
Problem: Searching for a character matches an illegal byte and causes
invalid memory access. (Dominique Pelle)
Solution: Do not match an invalid byte when search for a character in a
string. Fix equivalence classes using negative numbers, which
result in illegal bytes.
Problem: When there are illegal utf-8 characters the old regexp engine may
go past the end of a string.
Solution: Only advance to the end of the string. (Dominique Pelle)
Problem: Crash when searching for "x\{0,90000}". (Dominique Pelle)
Solution: Bail out from the NFA engine when the max limit is much higher
than the min limit.
Problem: With some regexp patterns the NFA engine uses many states and
becomes very slow. To the user it looks like Vim freezes.
Solution: When the number of states reaches a limit fall back to the old
engine. (Christian Brabandt)
Problem: Searching for "a" does not match accented "a" with new regexp
engine, does match with old engine. (David Bürgin)
"ca" does not match "ca" with accented "a" with either engine.
Solution: Change the old engine, check for following composing character
also for single-byte patterns.
Problem: When updating the window involves a regexp pattern, an interactive
substitute to replace a "\n" with a line break fails. (Ingo
Karkat)
Solution: Set reg_line_lbr in vim_regsub() and vim_regsub_multi().
Problem: Crash when using cpp syntax file with pattern using external
match. (Havard Garnes)
Solution: Discard match when end column is before start column.
Problem: The string returned by submatch() does not distinguish between a
NL from a line break and a NL that stands for a NUL character.
Solution: Add a second argument to return a list. (ZyX)
Problem: Using \1 in pattern goes one line too far. (Bohr Shaw, John Little)
Solution: Only advance the match end for the matched characters in the last
line.
Problem: Old regexp engine does not match pattern with backref correctly.
(Dominique Pelle)
Solution: Fix setting status. Test multi-line patterns better.
