Bindings in literate haskell don't seem to work

[sid-kap]

According to the documentation,

The entire literate Haskell document itself will be loaded into ghci before evaluating the expressions, so expressions may reference anything in scope.

This doesn't seem to work for me. The following markdown

    ```haskell
    x = 5

```ghci
:show bindings
```

produces the following output (with the command `BlogLiteratelyD -g test.md`):

x = 5 ghci> :show bindings it :: () = ()

So it seems that the binding for `x` did not work.

[byorgey]

Hi @sid-kap ,

    ```haskell
    x = 5

is Markdown syntax which typesets some Haskell code, but it is not actual Haskell code in the sense that you can load it into ghci.  Instead, the idea is that in a literate Haskell document you set off Haskell code using "bird tracks", like this:

> x = 5

Such bindings should indeed be in scope in `ghci` blocks. (And they will also be typeset just like a `haskell` block would be.)

[sid-kap]

Changing the example to

> x = 5

```ghci
:show bindings

does not fix the problem.

[byorgey]

Hmm, how about

    > x = 5

    ```ghci
    x

Does that work?

[sid-kap]

Nope

[byorgey]

What does it output?

[sid-kap]

Here is the output:

> x = 5

ghci> :show bindings
  it :: () = ()

ghci> x
ghci> print x

[byorgey]

That still has :show bindings in it. Can you try removing that and just put x by itself in the ghci block? I suspect that a command like :show bindings messes up the (very hacky) way that the ghci output gets parsed.

[sid-kap]

Hmm. I removed all instances of :show bindings and it still doesn't work. There is no output after x and print x.

[byorgey]

Strange. Can you paste the exact contents of your .lhs file and the exact output produced by BlogLiterately?

[sid-kap]

test.md:

> x = 5

```ghci
x
print x

I'm running the command:

stack exec BlogLiteratelyD -- -g test.md > test.html

and the HTML output is

``` html
<pre class="sourceCode haskell"><code class="sourceCode haskell"><span style="">&gt;</span> <span style="">x</span> <span style="color: red;">=</span> <span class="hs-num">5</span>
</code></pre>
<pre><code><span style="color: gray;">ghci&gt; </span>x
<span style="color: gray;">ghci&gt; </span>print x</code></pre>
<div id="references" class="references">

</div>

[byorgey]

Try naming the file test.lhs instead of test.md?

[sid-kap]

That fixed it. Sorry for the noise!

[byorgey]

Ah, good. No worries!