Can arbitrary code length be allowed?

[rikhuijzer]

Currently not, because the code needs to be converted to a filename. However, the solution could be that the user specifies a name:

```jl block_name
[...]
```

or that Lua and Julia generate the same hash for a codeblock.

[rikhuijzer]

Let's call it a feature; not a bug. The benefit, currently, is that users are encouraged to keep the logic inside the module. The drawback of writing code in the Markdown file is that it is parsed much later than code in source files and the code is more difficult to test. Users who want to write code in the Markdown can use Bookdown, Franklin or Weave.

It would also make the guessing of file and caption names much more difficult for Books.jl.