*ft_hare.txt*	Support for the Hare programming language

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CONTENTS						*hare* *hare.vim*

1. Introduction			|ft-hare-intro|
2. Filetype plugin		|ft-hare-plugin|
3. Haredoc filetype		|ft-haredoc-plugin|
4. Indentation settings		|ft-hare-indent|
5. Compiler support		|compiler-hare|

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INTRODUCTION						*ft-hare-intro*

This plugin provides syntax highlighting, indentation, and other supporting
functionality for the Hare programming language.


FILETYPE PLUGIN						*ft-hare-plugin*

This plugin has a few different variables that can be defined inside your
|vimrc| to tweak its behavior.

Additionally, support is provided for folding `{ }` blocks.  To enable folding,
add the following to a file inside your |after-directory| (e.g.
~/.vim/after/ftplugin/hare.vim): >

	setlocal foldmethod=syntax

Because block-based folding tends to create many small folds, consider setting
a few related options, such as 'foldminlines' and 'foldnestmax'.

						*g:hare_recommended_style*
The following options are set by default, in accordance with Hare's official
style guide: >

	setlocal noexpandtab
	setlocal shiftwidth=0
	setlocal softtabstop=0
	setlocal tabstop=8
	setlocal textwidth=80

To disable this behavior, add the following to your |vimrc|: >

	let g:hare_recommended_style = 0
<
						*g:hare_symbol_operators*
By default, symbolic operators do not receive any special highlighting (with
`!`, `?`, and `::` being the only exceptions).  To enable syntax highlighting
for most other operators, add the following to your |vimrc|: >

	let g:hare_symbol_operators = 1
<
							*g:hare_space_error*
By default, trailing whitespace and spaces followed by <Tab> characters will
be highlighted as errors.  This is automatically disabled in Insert mode.  To
turn off this highlighting completely, add the following to your |vimrc|: >

	let g:hare_space_error = 0


HAREDOC FILETYPE					*ft-haredoc-plugin*

This plugin will automatically detect README files inside Hare modules, using
a recursive directory search, and give them the "haredoc" filetype.  Because
this is such a common filename, this plugin only searches for Hare source
files within the same directory by default.

							*g:filetype_haredoc*
The |g:filetype_haredoc| variable can be used to tweak the depth of this
search, or bypass the detection of Hare documentation files altogether:

	Value		Effect~
	0		No automatic detection
	1		Search current directory only (this is the default)
	2		Search one level of subdirectories
	3		Search two levels of subdirectories

The search depth may be any positive integer, but values higher than `2` are
unlikely to provide a tangible benefit in most situations.


INDENTATION SETTINGS					*ft-hare-indent*

Unlike most other settings for this plugin, the indentation settings may also
be set per-buffer, overriding any global configuration that exists.  To do
this, simply prefix the variable with |b:| instead of |g:|.

						*g:hare_indent_match_switch*
By default, continuation lines for "match" and "switch" conditions are
indented only one level: >hare

	const file = match (os::create(path, 0o644,
		flag::WRONLY | flag::TRUNC)) {
	case let file: io::file =>
		yield file;
	// ...

If you instead prefer indenting them two levels, to more closely resemble "if"
and "for" conditions, add the following line to your |vimrc|: >

	let g:hare_indent_match_switch = 2
<
							*g:hare_indent_case*
By default, continuation lines for cases in "match" and "switch" expressions
are indented two levels, to visually distinguish them from the body of the
case: >hare

	case ltok::I8, ltok::I16, ltok::I32,
			ltok::I64, ltok::INT =>
		// ...

If you prefer a different amount of indentation, you can adjust it using
|g:hare_indent_case|.  Valid values include `0`, `1`, and `2`.


COMPILER SUPPORT					*compiler-hare*

If this plugin detects a Makefile in the current directory, it will assume you
wish to use `make` for your build system, and will leave 'makeprg' untouched.
Otherwise, `hare build` will be used.

							*g:hare_makeprg_params*
When `hare build` is used, additional compiler options may be appended to
'makeprg' with the |g:hare_makeprg_params| variable.  It may also be set on a
per-buffer basis (using |b:| instead of |g:|), overriding any global
configuration that exists.  For example: >

	let b:hare_makeprg_params = '-lc -t o'

The global default is "-q", to suppress writing to stdout while building.

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