Since we already have a GasLexer, there is no reason why we should not have a NasmLexer.
The patch including the lexer and a typo fix in a comment is attached.
Strange, why is the priority always switching from minor to blocker ?
Implemented in [1917da7239a2], but tests are missing. I'll leave it open until I add some test files.
A couple of tests are included in [194b1a425cbd], not yet merged.
It's now in main. Thanks all!