Bitwise shift operator breaks indentation rules

[ateraz13]

When I let Emacs indent this code, it assumes the bitwise shift operator is an opening angle bracket.

let a = u32::MAX << 5;

The issue is caused by the column characters, I personally think rust-is-lt-char-operator doesn't handle this special case.

[holzingk]

Very annoying, indeed. It messes up the whole auto indent.

[gnuvince]

Any update on this?

[brotzeit]

Unfortunately, we lack active maintainers.

[turboMaCk]

this is extremely annoying issue.

[brotzeit]

Pull requests are very welcome.

[turboMaCk]

I might try to look into it but frankly my emacs-lisp fu is not that high.

In meantime the workaround is:

let u64_max = u64::MAX;
x = u64_max << 5;

[brotzeit]

It's probably more finding the correct regexes and existing functions that can be used than writing lots of elisp. I'm always very careful changing such functionality as it is likely to break something else. That's why adding tests for those things is always a good idea. And I have a better feeling when I press the merge button.