Markdown renderer should infer header level from title format

[flying-sheep]

If you e.g. set title_format = "#### {name} {version}", section headers will have the same header level as the title.

This shouldn’t be the case. Instead sections and section-less categories should be one header level below the title, and categories within sections one more.

Since specifying arbitrarily deep header sections in the title_format option, this should of course work by default and not require a template.

Example output:

<!-- level(header) is defined by `title_format` ⇒ here level 4 -->
#### Foo 1.2.3

<!-- section-less categories are at level(header) + 1 ⇒ here level 5 -->
##### Features
- Added abc

<!-- sections are at level(header) + 1 too ⇒ here level 5 -->
##### Web

<!-- categories within sections are at level(header) + 2 ⇒ here level 6 -->
###### Bugfixes
- Fixed xyz

[adiroiban]

Happy to have a config, so that you don't need to modify the template.

Can you please provide a full example that we can reproduce, together with the actual vs expected output ?

---

I am not very familiar with Markdown usage... I just want to make sure this feature makes sense

I hope some other towncrier developers that care about Markdown can check this and add more feedback.

[flying-sheep]

Full example: https://gist.github.com/flying-sheep/d1f654bd540cce2c67f992652f439a66

[adiroiban]

Many thanks for the report and the example.

I see that single_file = false is used here

I see that last fix for this was done by @znichollscr

I hope we can get some feedback from other users of towcrier

[znichollscr]

Feature request makes perfect sense.

How to implement it is another question, where I'm not familiar enough with the codebase to provide a good answer unfortunately.