bors afaa406465 Auto merge of #51803 - lucasem:rustdoc-code-hash-escape, r=GuillaumeGomez
rustdoc codeblock hash escape

So that docstring text such as the following (in a code block) can be created ergonomically:

```rust
let s = "
    foo
    # bar
    baz
";
```

Such code in a docstring hide the <code>&nbsp;&nbsp;&nbsp;&nbsp;# bar</code> line.

Previously, using two consecutive hashes <code>&nbsp;&nbsp;&nbsp;&nbsp;## bar</code> would turn the line into _shown_ `# bar`, losing the leading whitespace. A line of code like <code>&nbsp;&nbsp;&nbsp;&nbsp;# bar</code> (such as in the example above) **could not be represented** in the docstring text.

This commit makes the two consecutive hashes not also trim the leading whitespace — the two hashes simply **escape** into a single hash and do not hide the line, leaving the rest of that line unaffected. The new docstring text to achieve the above code block is:

```rust
/// ```
/// let s = "
///     foo
///     ## bar
///     baz
/// ";
/// ```
```
2018-07-04 20:21:01 +00:00
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2018-06-18 10:34:48 -06:00
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Rust documentations

Building

To generate all the docs, follow the "Building Documentation" instructions in the README in the root of the repository. This will convert the distributed Markdown docs to HTML and generate HTML doc for the books, 'std' and 'extra' libraries.

To generate HTML documentation from one source file/crate, do something like:

rustdoc --output html-doc/ --output-format html ../src/libstd/path.rs

(This, of course, requires a working build of the rustdoc tool.)

Additional notes

To generate an HTML version of a doc from Markdown manually, you can do something like:

rustdoc reference.md

(reference.md being the Rust Reference Manual.)

An overview of how to use the rustdoc command is available in the docs. Further details are available from the command line by with rustdoc --help.