We can't always tell if it's LaTeX, ConTeXt, or plain TeX.
Better just to use "tex" always.
Also changed:
ConTeXt writer: now outputs raw "tex" blocks as well as "context".
(Closes#969).
RST writer: uses ".. raw:: latex" for "tex" content.
(RST doesn't support raw context anyway.)
Note that if "context" or "latex" specifically is desired,
you can still force that in a markdown document by using
the raw attribute (see MANUAL.txt):
```{=latex}
\foo
```
Note that this change may affect some filters, if they assume that raw
tex parsed by the Markdown reader will be RawBlock (Format "latex").
In most cases it should be trivial to modify the filters to accept
"tex" as well.
even if the `latex_macros` extension is set.
This reverts to earlier behavior and is probably safer
on the whole, since some macros only modify things in
included packages, which pandoc's macro expansion can't
modify.
Closes#4246.
Don't pass through macro definitions themselves when `latex_macros`
is set. The macros have already been applied.
If `latex_macros` is enabled, then `rawLaTeXBlock` in
Text.Pandoc.Readers.LaTeX will succeed in parsing a macro definition,
and will update pandoc's internal macro map accordingly, but the
empty string will be returned.
Together with earlier changes, this closes#4179.
