#21270 (first contribution) fix "file emitted multiple times" errors in rust-analyzer scip.

#21276 fix reference-style links in hover.

#21304 strip invisible delimiters in MBE.

#21262 use the HIR to check for used locals.

#21032 don’t add semicolons to unit-returning function calls in argument lists.

#21278 suggest &mut T for &T in completions.

#21289 suggest &T for &&T in completions.

#21212 use variant name as variable in postfix completions for enums.

#21166 support this parameter name in closures.

#21277 fix reference stripping in expected type analysis.

#21291 fix expected type analysis for match arms.

#20438 fix guessing of braces for renamed macros.

#21293 don’t offer move_guard in blocks with multiple statements.

#21258 support add_return_type for functions defined inside closures.

#20576 support nested if-let in merge_nested_if.

#20577 fix indent in merge_nested_if.

#21266 keep expression in replace_let_with_if_let.

#21272 prepend workspace root to target file for sysroot metadata.

#21273 fix method resolution for incoherent impls when there are two sysroots in the crate graph.