Fixes #13793. Interestingly enough, to actually check that the macro call has at least two arguments, we need to use the rust lexer after getting the original source code snippet. changelog: Add new `useless_concat` lint
Fixes #13793. Interestingly enough, to actually check that the macro call has at least two arguments, we need to use the rust lexer after getting the original source code snippet. changelog: Add new `useless_concat` lint