LaTeX writer/template: better handling of front/main/backmatter.

In pandoc 2.7 we assumed that every class with chapters would
accept `\frontmatter`, `\mainmatter`, and `\backmatter`.
This is not so (e.g. report does not).  So pandoc 2.7
breaks on report class by including an unsupported command.

So we replace the book-class variable in the template with
two variables, has-chapters and has-frontmatter, and set
these intelligently in the writer.

Closes #5348.

0 files changed, 0 insertions, 0 deletions