patch 9.0.1741: No type checking in interfaces Commit: https://github.com/vim/vim/commit/c5d2744c045f9ad058cbc799f2434d90a6d83516 Author: LemonBoy <thatlemon@gmail.com> Date: Sat Aug 19 13:02:35 2023 +0200 patch 9.0.1741: No type checking in interfaces Problem: No type checking in interfaces Solution: Implement member type check in vim9 interfaces Most of the code is a small refactoring to allow the use of a where_T for signaling the type mismatch, the type checking itself is pretty simple. Improve where_T error reports Let the caller explicitly define the kind of location it's referring to and free the WT_ARGUMENT enum from its catch-all role. Implement type checking for interface methods Follows closely the logic used for type-checking the members. closes: #12844 Signed-off-by: Christian Brabandt <cb@256bit.org> Co-authored-by: LemonBoy <thatlemon@gmail.com>

| +0#0000e05#a8a8a8255@1>v+0#0000000#ffffff0|i|m|9|s|c|r|i|p|t+0&#ffff4012| +0&#ffffff0@47
| +0#0000e05#a8a8a8255@1|T+0#ffffff16#ff404010|h|e| |q|u|i|c|k| |b|r|o|w|n| |f|o|x| +0#0000000#ffffff0@38
| +0#0000e05#a8a8a8255@1|s+0#0000000#ffffff0|o|m|e| |t|e|x|t| @48
|~+0#4040ff13&| @58
|~| @58
|~| @58
|~| @58
| +0#0000000&@41|1|,|1| @10|A|l@1|