[TxMt] Re: Trying to match triple-backticks

[Allan Odgaard]

On 8 Jan 2016, at 9:18, Martin Kühl wrote:

> Thinking about this more, I believe this is a bug.
> The `L:` prefix seems to cause the injected begin matcher
> to match even before its own end matcher can,

The `L:` prefix means “inject the rules before the current context’s 
rules”.

What happens here is that we inject a begin/end match, each for `~~~`.

Once we match `~~~` we start a new context, in this new context, the 
injection grammar is once again injected, so once we see the ending 
`~~~` it is actually matched by a new instance of the injection grammar, 
because we inject it before the current context’s rules (in which we 
find the rule to match the ending `~~~`).

So one solution is to remove the `L:` prefix so that we check the 
current context’s rules before the injection grammar’s.

Another solution is to make the scope selector: `L:(text.html.markup $)` 
to only inject the rules when we are at the root level of the document. 
Alternatively `L:(text.html.markup - markup.raw.block.markdown)` to just 
avoid injecting it into fenced code blocks.