"rust doc" (rust.rc driver wrapping rustdoc) does not handle top-level items like "rustdoc"

[pnkfelix]

Basically, I expect rust doc to behave just like rustdoc. Issue #7380 provides one example where this is not the case, but the issue here seems a bit more serious: Significant portions of the doc are not being emitted, though the files to hold them are being created (and left empty).

Context:

$ rust build --version
rustc 0.6 (e650399 2013-06-12 23:10:15 -0700)
host: x86_64-apple-darwin
$ cat play-doc.rs
#[link( name = "playdoc", vers = "1.0" )];

/// Doc for `w` mod.
pub mod w {
    /// Doc for `f` fn.
    pub fn f() -> int { 3 }
}

/// Doc for `whoa` fn; returns 3.  (Whoa.)
pub fn whoa() -> int { 3 }
$ rm -rf foo
$ cat play-doc.rs
#[link( name = "playdoc", vers = "1.0" )];

/// Doc for `w` mod.
pub mod w {
    /// Doc for `f` fn.
    pub fn f() -> int { 3 }
}

/// Doc for `whoa` fn; returns 3.  (Whoa.)
pub fn whoa() -> int { 3 }

Transcript showing bug (good "rustdoc" behavior first, followed by erroneous "rust doc" behavior second):

$ mkdir foo
$ rm -rf foo/* ; rustdoc play-doc.rs --output-format markdown --output-dir foo 
$ ls -l foo/
total 16
-rw-------  1 fklock  staff  236 Jun 25 15:43 playdoc.md
-rw-------  1 fklock  staff  161 Jun 25 15:43 w.md
$ cat foo/playdoc.md
% Crate playdoc

<div class='index'>

* [Function `whoa`](#function-whoa) - Doc for `whoa` fn; returns 3
* [Module `w`](w.md) - Doc for `w` mod.

</div>

## Function `whoa`

    fn whoa() -> int

Doc for `whoa` fn; returns 3.  (Whoa.)

$ rm -rf foo/* ; rust doc play-doc.rs --output-format markdown --output-dir foo 
$ ls -l foo/
total 8
-rw-------  1 fklock  staff    0 Jun 25 15:43 playdoc.md
-rw-------  1 fklock  staff  161 Jun 25 15:43 w.md
$ cat foo/playdoc.md
$ 

[thestinger]

This is still an issue.

[alexcrichton]

Rustdoc has been removed, and rustdoc_ng does not suffer from the same problem. Closing.