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Description

Meikel Brandmeyer's excellent Clojure runtime files

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Meikel Brandmeyer's excellent Clojure runtime files, extracted from the VimClojure project for use with alternate Clojure REPL plugins.

These files ship with Vim versions 7.3.803 and later, and are periodically merged into the official Vim repository.

Installation

If you are running an old version of Vim or if you would like to keep up with development, you can install this repository like a standard Vim plugin.

If you are unfamiliar with this process, refer to the Pathogen project.

Please make sure that the following options are set in your vimrc to enable all features:

syntax on
filetype plugin indent on

Features

  • Augmentable syntax highlighting for Clojure and ClojureScript buffers.

  • Configurable Clojure-specific indentation.

  • Basic insert mode completion for special forms and public vars in

    clojure.core
    .

This is bound to both the

'omnifunc'
and
'completefunc'
options, which can be invoked with the insert mode mappings
 and 

  respectively.

If you install this project as a plugin,

*.edn
files are recognized as a Clojure filetype, overriding the built-in declaration as
edif
.

Third Party Extensions

  • Rainbow Parentheses

kien's

rainbow_parentheses.vim
is highly recommended.

  • Extended Syntax Highlighting

vim-clojure-highlight
is a fireplace.vim plugin that extends syntax highlighting to local, referred, and aliased vars via
b:clojure_syntax_keywords
.

This is a reimplementation of the DynamicHighlighting feature from VimClojure.

Clojure REPL Plugins

If you would like to get more serious about programming in Clojure, consider using an interactive Clojure REPL plugin.

Syntax Options

Syntax highlighting for public vars from

clojure.core
is provided by default, but any symbol can be matched and highlighted by adding it to the
g:clojure_syntax_keywords
or
b:clojure_syntax_keywords
variables:
let g:clojure_syntax_keywords = {
    \ 'clojureMacro': ["defproject", "defcustom"],
    \ 'clojureFunc': ["string/join", "string/replace"]
    \ }

See

s:clojure_syntax_keywords
in the syntax script for a complete example.

The global version of this variable is intended for users that always wish to have a certain set of symbols highlighted in a certain way, while the buffer-local version is intended for plugin authors who wish to highlight symbols dynamically.

If the buffer flag

b:clojure_syntax_without_core_keywords
is set, vars from
clojure.core
are not highlighted by default. This is useful for highlighting namespaces that have set
(:refer-clojure :only [])
.

vim-clojure-highlight
uses these variables to highlight extra vars when connected to a REPL.

Indent Options

Clojure indentation differs somewhat from traditional Lisps, due in part to the use of square and curly brackets, and otherwise by community convention. These conventions are not universally followed, so the Clojure indent script offers a few configurable options, listed below.

If the current vim does not include searchpairpos(), the indent script falls back to normal

'lisp'
indenting, and the following options are ignored.

g:clojure_maxlines

Set maximum scan distance of searchpairpos(). Larger values trade performance for correctness when dealing with very long forms. A value of 0 will scan without limits.

" Default
let g:clojure_maxlines = 100

g:clojure_fuzzy_indent
,
g:clojure_fuzzy_indent_patterns
,
g:clojure_fuzzy_indent_blacklist

The

'lispwords'
option is a list of comma-separated words that mark special forms whose subforms must be indented with two spaces.

For example:

(defn bad []
      "Incorrect indentation")

(defn good [] "Correct indentation")

If you would like to specify

'lispwords'
with a pattern instead, you can use the fuzzy indent feature:
" Default
let g:clojure_fuzzy_indent = 1
let g:clojure_fuzzy_indent_patterns = ['^with', '^def', '^let']
let g:clojure_fuzzy_indent_blacklist = ['-fn$', '\v^with-%(meta|out-str|loading-context)$']

" Legacy comma-delimited string version; the list format above is " recommended. Note that patterns are implicitly anchored with ^ and $. let g:clojure_fuzzy_indent_patterns = 'with.,def.,let.*'

g:clojure_fuzzy_indent_patterns
and
g:clojure_fuzzy_indent_blacklist
are lists of patterns that will be matched against the unqualified symbol at the head of a list. This means that a pattern like
"^foo"
will match all these candidates:
foobar
,
my.ns/foobar
, and
#'foobar
.

Each candidate word is tested for special treatment in this order:

  1. Return true if word is literally in
    'lispwords'
  2. Return false if word matches a pattern in
    g:clojure_fuzzy_indent_blacklist
  3. Return true if word matches a pattern in
    g:clojure_fuzzy_indent_patterns
  4. Return false and indent normally otherwise

g:clojure_special_indent_words

Some forms in Clojure are indented so that every subform is indented only two spaces, regardless of

'lispwords'
. If you have a custom construct that should be indented in this idiosyncratic fashion, you can add your symbols to the default list below.
" Default
let g:clojure_special_indent_words = 'deftype,defrecord,reify,proxy,extend-type,extend-protocol,letfn'

g:clojure_align_multiline_strings

Align subsequent lines in multiline strings to the column after the opening quote, instead of the same column.

For example:

(def default
  "Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do
  eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut
  enim ad minim veniam, quis nostrud exercitation ullamco laboris
  nisi ut aliquip ex ea commodo consequat.")

(def aligned "Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.")

This option is off by default.

" Default
let g:clojure_align_multiline_strings = 0

g:clojure_align_subforms

By default, parenthesized compound forms that look like function calls and whose head subform is on its own line have subsequent subforms indented by two spaces relative to the opening paren:

(foo
  bar
  baz)

Setting this option changes this behavior so that all subforms are aligned to the same column, emulating the default behavior of clojure-mode.el:

(foo
 bar
 baz)

This option is off by default.

" Default
let g:clojure_align_subforms = 0

Development

Pull requests and patches are strongly encouraged!

A large portion of the syntax file is generated from Clojure code in

clj/src/
. Generation of vim code in this fashion is preferred over hand crafting of the same.

There is an incomplete syntax test suite in

clj/test/
. Any additions and improvements to these tests are highly appreciated.

License and Acknowledgements

Many thanks to Meikel Brandmeyer for his excellent work on making Vim a first class Clojure editor.

Thanks to Tim Pope for advice in #vim.

syntax/clojure.vim

ftdetect/clojure.vim
,
ftplugin/clojure.vim
,
indent/clojure.vim

Modified and relicensed under the Vim License for distribution with Vim:

See LICENSE.txt for more information.

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