…n in the rustc book.

It is now exactly equivalent to lookup_char_pos.

This uplifts `get_def_path` from Clippy. This is a follow up on the
implementation of internal lints: rust-lang#59316

The internal lint implementation also copied the implementation of the
`AbsolutePathPrinter`. To get rid of this code duplication this also
uplifts the `get_def_path` function from Clippy.

This also renames `match_path` to `match_def_path`, as it was originally
named in Clippy.

This adds some extra docs for the `no-prefer-dynamic` header.

And also a `s/must_compile_successfully/compile_pass`.

`must_compile_successfully` has been renamed to `compile_pass` at some
point in the past and this comment was still referring to the old name.

- Make links relative.
- Adjust links from old 2018-edition book.
- Fix broken link in `let` docs.

Signed-off-by: Anders Kaseorg <andersk@mit.edu>

…ble compiler flags, instead of flags for debugging.

…mertj

Document the -Z flag to the rustc book

# Description

Changes:
- Added new documentation on the `-Z` flag of rustc in the command-line arguments section of the rustc book.

If I need to rephrase anything or if you have any improvements, please let me know! I deliberately did not create an exhaustive list of all options since they are likely to change over time and per toolchain version.

closes rust-lang#41142

remove lookup_char_pos_adj

It is now exactly equivalent to lookup_char_pos.

…ishearth

Uplift `get_def_path` from Clippy

cc rust-lang/rust-clippy#3926
cc rust-lang#59738

This uplifts `get_def_path` from Clippy. This is a follow up on the
implementation of internal lints: rust-lang#59316

The internal lint implementation also copied the implementation of the
`AbsolutePathPrinter`. To get rid of this code duplication this also
uplifts the `get_def_path` function from Clippy.

This also renames `match_path` to `match_def_path`, as it was originally
named in Clippy.

r? @Manishearth

compiletest: Improve no_prefer_dynamic docs

This adds some extra docs for the `no-prefer-dynamic` header.

And also a `s/must_compile_successfully/compile_pass`.

`must_compile_successfully` has been renamed to `compile_pass` at some
point in the past and this comment was still referring to the old name.

Kill dead code dominator code.

Hi,

Whilst fiddling around in the dominator code, I found some (I think) unused code. This code *was* used at the time it was imported, but over time it seems to have become redundant.

I've tested a build up to stage 1 with no problems. Maybe the tests will turn up something though.

P.S.

There is a FIXME comment in `dominators/mod.rs`:
```
    pub fn is_dominated_by(&self, node: Node, dom: Node) -> bool {
        // FIXME -- could be optimized by using post-order-rank
        self.dominators(node).any(|n| n == dom)
    }
```

I'm not sure of the intention of this comment. The `Dominators` struct already operates over post-order rank nodes. Any ideas?

…sdreavus

Fix broken links on std::boxed doc page

r? @QuietMisdreavus

Fix links on keyword docs.

- Make links relative.
- Adjust links from old 2018-edition book.
- Fix broken link in `let` docs.

Remove strange formatting in `Ordering` docs.

I can't really fathom what the intent of the brackets is. The [original PR](rust-lang#12956) doesn't give any hints. I think it seems fine without them.

…acrum

Re-export NonZero signed variant in std

cc  rust-lang#59834

std::ops::Div examples: correct nominator to numerator