patch 9.0.1796: Vim9 problems with null_objects Commit: https://github.com/vim/vim/commit/5c018bee0e1e272774584cfb1577327fbb67254a Author: Ernie Rael <errael@raelity.com> Date: Sun Aug 27 18:40:26 2023 +0200 patch 9.0.1796: Vim9 problems with null_objects Problem: Vim9 problems with null_objects Solution: Vim9 improve null_object usage Fix "xvar == null", where xvar might have been assigned null_object. Fix compilation failure: "var o2: C = null_object". closes: #12890 Signed-off-by: Christian Brabandt <cb@256bit.org> Co-authored-by: Ernie Rael <errael@raelity.com>

/^CFLAGS[[:blank:]]*=/s/$/ -Wall -Wextra -Wshadow -Werror/
/^PERL_CFLAGS_EXTRA[[:blank:]]*=/s/$/ -Wno-error=unused-function -Wno-shadow/
/^RUBY_CFLAGS_EXTRA[[:blank:]]*=/s/$/ -Wno-error=unused-parameter/