features.

Note: Only existence of these options matters, not their value.
      You can replace 1 above with anything.


QUAKE						*quake.vim* *ft-quake-syntax*

The Quake syntax definition should work for most FPS (First Person Shooter)
based on one of the Quake engines.  However, the command names vary a bit
between the three games (Quake, Quake 2, and Quake 3 Arena) so the syntax
definition checks for the existence of three global variables to allow users
to specify what commands are legal in their files.  The three variables can
be set for the following effects:

set to highlight commands only available in Quake: >
	:let quake_is_quake1 = 1

set to highlight commands only available in Quake 2: >
	:let quake_is_quake2 = 1

set to highlight commands only available in Quake 3 Arena: >
	:let quake_is_quake3 = 1

Any combination of these three variables is legal, but might highlight more
commands than are actually available to you by the game.


R							*r.vim* *ft-r-syntax*

The parsing of R code for syntax highlight starts 40 lines backwards, but you
can set a different value in your |vimrc|. Example: >
	let r_syntax_minlines = 60

You can also turn off syntax highlighting of ROxygen: >
	let r_syntax_hl_roxygen = 0

enable folding of code delimited by parentheses, square brackets and curly
braces: >
	let r_syntax_folding = 1

and highlight as functions all keywords followed by an opening parenthesis: >
	let r_syntax_fun_pattern = 1


R MARKDOWN					*rmd.vim* *ft-rmd-syntax*

To disable syntax highlight of YAML header, add to your |vimrc|: >
	let rmd_syn_hl_yaml = 0

To disable syntax highlighting of citation keys: >
	let rmd_syn_hl_citations = 0

To highlight R code in knitr chunk headers: >
	let rmd_syn_hl_chunk = 1

By default, chunks of R code will be highlighted following the rules of R
language. Moreover, whenever the buffer is saved, Vim scans the buffer and
highlights other languages if they are present in new chunks. LaTeX code also
is automatically recognized and highlighted when the buffer is saved. This
behavior can be controlled with the variables `rmd_dynamic_fenced_languages`,
and `rmd_include_latex` whose valid values are: >
	let rmd_dynamic_fenced_languages = 0 " No autodetection of languages
	let rmd_dynamic_fenced_languages = 1 " Autodetection of languages
	let rmd_include_latex = 0 " Don't highlight LaTeX code
	let rmd_include_latex = 1 " Autodetect LaTeX code
	let rmd_include_latex = 2 " Always include LaTeX highlighting

If the value of `rmd_dynamic_fenced_languages` is 0, you still can set the
list of languages whose chunks of code should be properly highlighted, as in
the example: >
	let rmd_fenced_languages = ['r', 'python']


R RESTRUCTURED TEXT				*rrst.vim* *ft-rrst-syntax*

To highlight R code in knitr chunk headers, add to your |vimrc|: >
	let rrst_syn_hl_chunk = 1


RASI					*rasi.vim* *ft-rasi-syntax*

Rasi stands for Rofi Advanced Style Information. It is used by the program
rofi to style the rendering of the search window. The language is heavily
inspired by CSS stylesheet. Files with the following extensions are recognized
as rasi files: .rasi.

READLINE				*readline.vim* *ft-readline-syntax*

The readline library is primarily used by the BASH shell, which adds quite a
few commands and options to the ones already available.  To highlight these
items as well you can add the following to your |vimrc| or just type it in the
command line before loading a file with the readline syntax: >
	let readline_has_bash = 1

This will add highlighting for the commands that BASH (version 2.05a and
later, and part earlier) adds.


REGO						*rego.vim* *ft-rego-syntax*

Rego is a query language developed by Styra.  It is mostly used as a policy
language for kubernetes, but can be applied to almost anything.  Files with
the following extensions are recognized as rego files: .rego.


RESTRUCTURED TEXT			*rst.vim* *ft-rst-syntax*

Syntax highlighting is enabled for code blocks within the document for a
select number