This function can be used to sanitize reference labels so that
they do not contain any of the illegal characters \#[]",{}%()|= .
Currently only Links have their labels sanitized, because they
are the only Elements that use passed labels.
We previously took the old relationship names of the headers and footer in
secptr. That led to collisions. We now make a map of availabl names in the
relationships file, and then rename in secptr.
Graphics in `\section`/`\subsection` etc titles need to be `\protect`ed.
This adds a state value and manually turns it on before every invocation
of `sectionHeader` and manually turns it off after. Using a writer value
and applying `local` would probably be cleaner, but this fits with the
current style.
Currently, pandoc has hard-coded the following in order to make tight lists in
LaTeX:
```hs
text "\\itemsep1pt\\parskip0pt\\parsep0pt"
```
Which is fine, but does not allow customizations. For example, the `memoir`
class already has a `\tightlist` declaration for this purpose:
```tex
\newcommand{\tightlist}{%
\setlength{\itemsep}{0pt}\setlength{\parskip}{0pt}}
```
I'm proposing to use a similar solution:
```diff
@@ In Writers/LaTeX.hs:
-then text "\\itemsep1pt\\parskip0pt\\parsep0pt"
+then text "\\tightlist"
@@ In templates/default.latex:
+\newcommand{\tightlist}{%
+ \setlength{\itemsep}{1pt}\setlength{\parskip}{0pt}\setlength{\parsep}{0pt}}
```
This allows us to customize the tightness to our needs.
Backward Compatibility
If a person is using a custom LaTeX template (not based upon the `memoir`
class), the `\tightlist` declaration must be added.
Because of the built-in line skip, LaTeX can't handle a section header
as the first element in a list item. (To be precise, it can't handle it
if the list immediately follows a section header, but the instance is
rare enough that we can afford to be a bit more general). This puts a
non-breaking space before the header to solve this problem. We won't see
this space, since the header skips a line before printing anyway.
The output is ugly in LaTeX and this structure seems like it should
probably be avoided. But it is valid HTML and native pandoc, so we
should have some sort of typesettable representation in LaTeX.
We can now handle all different alignment types, for simple
tables only (no captions, no relative widths, cell contents just
plain inlines). Other tables are still handled using raw HTML.
Addresses #1585 as far as it can be addresssed, I believe.
Currently, pandoc has hard-coded the following in order to make horizontal
rules in LaTeX:
```hs
"\\begin{center}\\rule{3in}{0.4pt}\\end{center}"
```
Which is fine, but does not allow customizations. It also does not take into
consideration the current line width.
I'm proposing this change:
```diff
@@ In Writers/LaTeX.hs:
-"\\begin{center}\\rule{3in}{0.4pt}\\end{center}"
+"\\begin{center}\\rule{0.5\\linewidth}{\\linethickness}\\end{center}"
```
Also, if page-progression-direction not specified in metadata,
don't include the attribute even in EPUB3; not including it is
the same as including it with the value "default", as we did before.
Closes#1550.
* Create a type synonym for MIME type (instead of `String`).
* Add `getMimeTypeDef` function.
* Avoid recreating MIME type `Map`s every time.
* Move “Formula-...” case handling into `getMimeType`.
