Older style code language declarations no longer work

Question

Today I discovered that the HTML markup language declarations for code blocks no longer work. They are still described in the advanced markup help, though.

Is this a bug in the documentation or the implementation?

Examples,

1. Triple backticks. Using a language tag here does work (but not on Meta). Literal:

   ```bash
   #!/bin/bash
   [ -d '.' ] && echo "My directory is $PWD"
   ```
   

   And the corresponding rendered text:

   #!/bin/bash
   [ -d '.' ] && echo "My directory is $PWD"
   

2. Older style HTML comment. Also doesn't work on Meta, used to work on U&L but does no longer. Literal:

   <!--language: lang-bash-->
       #!/bin/bash
       [ -d '.' ] && echo "My directory is $PWD"
   

   And the corresponding rendered text:

   #!/bin/bash
   [ -d '.' ] && echo "My directory is $PWD"
   

---

Here is a screenshot from U&L to illustrate the rendering behaviour

Answer 1

You're just missing a couple of spaces. It should be:

<!-- language: lang-bash -->

    #!/bin/bash
    [ -d '.' ] && echo "My directory is $PWD"

Note that the documentation does have spaces after <!-- and before -->.