Update doc

- Avoid E706 error
- Fix not to skip comment/string lines when ignore_unmatched is 0

.gitattributes

@@ -1,5 +1,6 @@
 .gitattributes export-ignore
 .gitignore     export-ignore
 doc/tags       export-ignore
-README.md      export-ignore
+*.md           export-ignore
 zip            export-ignore
+test/*         export-ignore

EXAMPLES.md

@@ -0,0 +1,288 @@
+vim-easy-align examples
+=======================
+
+The description in this document assumes that you have defined this mapping.
+
+```vim
+vnoremap <silent> <Enter> :EasyAlign<cr>
+```
+
+To enable syntax highlighting in the code blocks, define and call the following
+function.
+
+```vim
+function! GFM()
+  let syntaxes = {
+  \ 'ruby':   'syntax/ruby.vim',
+  \ 'yaml':   'syntax/yaml.vim',
+  \ 'vim':    'syntax/vim.vim',
+  \ 'c':      'syntax/c.vim'
+  \ }
+
+  for [lang, syn] in items(syntaxes)
+    unlet b:current_syntax
+    silent! exec printf("syntax include @%s %s", lang, syn)
+    exec printf("syntax region %sSnip matchgroup=Snip start='```%s' end='```' contains=@%s",
+                \ lang, lang, lang)
+  endfor
+  let b:current_syntax='mkd'
+endfunction
+```
+
+Alignment around whitespaces
+----------------------------
+
+You can align text around whitespaces with `<space>` delimiter key.
+
+Try these commands:
+- `<Enter><space>`
+- `<Enter>2<space>`
+- `<Enter>*<space>`
+- `<Enter>-<space>`
+- `<Enter>-2<space>`
+- `<Enter><Enter><space>`
+- `<Enter><Enter>*<space>`
+
+### Example
+
+```
+
+Paul McCartney 1942
+George Harrison 1943
+Ringo Starr 1940
+Pete Best 1941
+
+```
+
+Formatting table
+----------------
+
+Try these commands:
+- `<Enter>*|`
+- `<Enter>**|`
+- `<Enter><Enter>*|`
+- `<Enter><Enter>**|`
+
+### Example
+
+```
+
+| Option| Type | Default | Description |
+|--|--|--|--|
+| threads | Fixnum | 1 | number of threads in the thread pool |
+|queues |Fixnum | 1 | number of concurrent queues |
+|queue_size | Fixnum | 1000 | size of each queue |
+|   interval | Numeric | 0 | dispatcher interval for batch processing |
+|batch | Boolean | false | enables batch processing mode |
+ |batch_size | Fixnum | nil | number of maximum items to be assigned at once |
+ |logger | Logger | nil | logger instance for debug logs |
+
+```
+
+
+Alignment around =
+------------------
+
+The default rule for delimiter key `=` aligns around a whole family of operators
+containing `=` character.
+
+Try these commands:
+- `<Enter>=`
+- `<Enter>*=`
+- `<Enter>**=`
+- `<Enter><Enter>**=`
+
+### Example
+
+```ruby
+
+a =
+a = 1
+bbbb = 2
+ccccccc = 3
+ccccccccccccccc
+ddd = 4
+eeee === eee = eee = eee=f
+fff = ggg += gg &&= gg
+g != hhhhhhhh == 888
+i   := 5
+i     %= 5
+i       *= 5
+j     =~ 5
+j   >= 5
+aa      =>         123
+aa <<= 123
+aa        >>= 123
+bbb               => 123
+c     => 1233123
+d   =>      123
+dddddd &&= 123
+dddddd ||= 123
+dddddd /= 123
+gg <=> ee
+
+```
+
+Formatting YAML (or JSON)
+-------------------------
+
+Try `<Enter>:` here, to align text around only the first occurrences of colons.
+In this case, you don't want to align around all the colons: `<Enter>*:`.
+
+```yaml
+
+mysql:
+  # JDBC driver for MySQL database:
+  driver: com.mysql.jdbc.Driver
+  # JDBC URL for the connection (jdbc:mysql://HOSTNAME/DATABASE)
+  url: jdbc:mysql://localhost/test
+  database: test
+  "user:pass":r00t:pa55
+
+```
+
+Formatting multi-line method chaining
+-------------------------------------
+
+Try `<Enter>.` or `<Enter>*.` on the following lines.
+
+```ruby
+my_object
+      .method1().chain()
+    .second_method().call()
+      .third().call()
+     .method_4().execute()
+```
+
+Notice that the indentation is adjusted to match the shortest one among those of
+the lines starting with the delimiter.
+
+```ruby
+my_object
+    .method1()      .chain()
+    .second_method().call()
+    .third()        .call()
+    .method_4()     .execute()
+```
+
+
+Partial alignment in block-visual mode / Negative field index
+-------------------------------------------------------------
+
+You can try one of these:
+- Select text around `=>` in block-wise visual mode (`<Ctrl>-V`) and `<Enter>=`
+- `<Enter>-=`
+
+```ruby
+
+options = { :caching => nil,
+            :versions => 3,
+            "cache=blocks" => false }.merge(options)
+
+```
+
+Commas
+------
+
+There is also a predefined rule for commas, try `<Enter>*,` for the following
+lines.
+
+```
+
+aaa,   bb,c
+d,eeeeeee
+fffff, gggggggggg,
+h, ,           ii
+j,,k
+
+```
+
+Ignoring delimiters in comments and strings
+-------------------------------------------
+
+Delimiters highlighted as comments or strings are ignored by default, try
+`<Enter>*=` on the following lines.
+
+```c
+
+/* a */ b = c
+aa >= bb
+// aaa = bbb = cccc
+/* aaaa = */ bbbb   === cccc   " = dddd = " = eeee
+aaaaa /* bbbbb */      == ccccc /* != eeeee = */ === fffff
+
+```
+
+Aligning in-line comments
+-------------------------
+
+```ruby
+apple = 1 # comment not aligned
+banana = 'Gros Michel' # comment 2
+```
+
+So, how do we align the trailing comments in the above lines?
+Simply try `<Enter>-<space>`! The spaces in the comments are ignored, so the
+trailing comment in each line is considered to be a single chunk.
+
+But this doesn't work in the following case.
+
+```ruby
+apple = 1 # comment not aligned
+apricot = 'DAD' + 'F#AD'
+banana = 'Gros Michel' # comment 2
+```
+
+That is because the second line doesn't have trailing comment, and
+the last space (`-`) for that line is the one just before `'F#AD'`.
+
+So, let's define a custom mapping for `#`.
+
+```vim
+if !exists('g:easy_align_delimiters')
+  let g:easy_align_delimiters = {}
+endif
+let g:easy_align_delimiters['#'] = { 'pattern': '#', 'ignores': ['String'] } }
+```
+
+Notice that the rule overrides `ignores` attribute in order *not to ignore*
+delimiters highlighted as comments.
+
+Then on `<Enter>#`, we get
+
+```ruby
+apple = 1         # comment not aligned
+apricot = 'DAD' + 'F#AD'
+banana = 'string' # comment 2
+```
+
+If you don't want to define a rule, you can do the same with the following
+command:
+
+```vim
+" Using regular expression /#/
+" - "is" is fuzzy-matched to "*i*gnore*s*"
+:EasyAlign/#/{'is':['String']}
+```
+
+In this case, the second line is ignored as it doesn't contain `#`. (The one
+highlighted as String is ignored.) If you don't want the second line to be
+ignored, set `g:easy_align_ignore_unmatched` to 0, or use the following
+commands:
+
+```vim
+" Using predefined rule with delimiter key #
+:EasyAlign#{'iu':0}`
+
+" Using regular expression /#/
+:EasyAlign/#/{'is':['String'],'iu':0}`
+```
+
+Then we get,
+
+```ruby
+apple = 1                # comment not aligned
+apricot = 'DAD' + 'F#AD'
+banana = 'string'        # comment 2
+```
+

README.md

@@ -8,7 +8,16 @@ Demo
 
 ![Screencast](https://raw.github.com/junegunn/vim-easy-align/gif/vim-easy-align.gif)
 
-[Screencast](https://vimeo.com/63506219)
+Features
+--------
+
+- Optimized for code editing
+- Designed to require minimal keystrokes
+- Extensible alignment rules
+- Supports arbitrary regular expressions
+- Aligns text around either _all or n-th_ occurrence(s) of the delimiter
+- Ignores delimiters in certain syntax highlight groups (e.g. comments, strings)
+- Ignores lines without a matching delimiter
 
 Installation
 ------------
@@ -26,53 +35,129 @@ Bundle 'junegunn/vim-easy-align'
 Usage
 -----
 
-_vim-easy-align_ defines interactive `:EasyAlign` command in the visual mode.
-For convenience, it is advised that you define a mapping for triggering it in your `.vimrc`.
+_vim-easy-align_ defines `:EasyAlign` command (and the right-justification
+variant `:EasyAlign!`) in the visual mode.
+
+| Mode                      | Command                                       |
+| ------------------------- | --------------------------------------------- |
+| Interactive mode          | `:EasyAlign`                                  |
+| Using predefined rules    | `:EasyAlign [FIELD#] DELIMITER_KEY [OPTIONS]` |
+| Using regular expressions | `:EasyAlign [FIELD#] /REGEXP/ [OPTIONS]`      |
+
+### Interactive mode
+
+The command will go into the interactive mode when no argument is given.
+For convenience, it is advised that you define a mapping for triggering it in
+your `.vimrc`.
 
 ```vim
 vnoremap <silent> <Enter> :EasyAlign<cr>
 ```
 
-With the mapping, you can align selected lines with a few keystrokes.
+With the mapping, you can align selected lines of text with a few keystrokes.
 
 1. `<Enter>` key to start interactive EasyAlign command
 1. Optional Enter keys to toggle right-justification mode
 1. Optional field number (default: 1)
-    - `1`        Alignment around 1st delimiters
-    - `2`        Alignment around 2nd delimiters
+    - `1`         Around the 1st occurrences of delimiters
+    - `2`         Around the 2nd occurrences of delimiters
     - ...
-    - `*`        Alignment around all delimiters (recursive)
-1. Delimiter (`<space>`, `=`, `:`, `.`, `|`, `,`)
+    - `*`         Around all occurrences of delimiters
+    - `**`        Left-right alternating alignment around all delimiters
+    - `-`         Around the last occurrences of delimiters (`-1`)
+    - `-2`        Around the second to last occurrences of delimiters
+    - ...
+1. Delimiter key (a single keystroke; `<space>`, `=`, `:`, `.`, `|`, `,`)
 
-Alignment rules for the following delimiters have been crafted to meet the most needs.
+Alignment rules for the following delimiters have been defined to meet the most needs.
 
-| Delimiter | Description/Use cases                                      |
-| --------- | ---------------------------------------------------------- |
-| `<space>` | General alignment around spaces                            |
-| `=`       | Operators containing equals sign (=, ==, !=, +=, &&=, ...) |
-| `:`       | Suitable for formatting JSON or YAML                       |
-| `.`       | Multi-line method chaining                                 |
-| `,`       | Multi-line method arguments                                |
-| &#124;    | Table markdown                                             |
+| Delimiter key | Description/Use cases                                                |
+| ------------- | -------------------------------------------------------------------- |
+| `<space>`     | General alignment around whitespaces                                 |
+| `=`           | Operators containing equals sign (`=`, `==,` `!=`, `+=`, `&&=`, ...) |
+| `:`           | Suitable for formatting JSON or YAML                                 |
+| `.`           | Multi-line method chaining                                           |
+| `,`           | Multi-line method arguments                                          |
+| &#124;        | Table markdown                                                       |
 
-### Example command sequences
+#### Example command sequences
 
-| With visual map   | Description                                       | Equivalent command      |
-| ----------------- | ------------------------------------------------- | ----------------------- |
-| `<Enter>=`        | Alignment around 1st equals signs (and the likes) | `:'<,'>EasyAlign=`      |
-| `<Enter>2=`       | Alignment around 2nd equals signs (and the likes) | `:'<,'>EasyAlign2=`     |
-| `<Enter>3=`       | Alignment around 3rd equals signs (and the likes) | `:'<,'>EasyAlign3=`     |
-| `<Enter>*=`       | Alignment around all equals signs (and the likes) | `:'<,'>EasyAlign*=`     |
-| `<Enter><Enter>=` | Right-justified alignment around 1st equals signs | `:'<,'>EasyAlignRight=` |
-| `<Enter><space>`  | Alignment around 1st space                        | `:'<,'>EasyAlign\ `     |
-| `<Enter>2<space>` | Alignment around 2nd space                        | `:'<,'>EasyAlign2\ `    |
-| `<Enter>:`        | Alignment around 1st colon                        | `:'<,'>EasyAlign:`      |
-| ...               | ...                                               |                         |
+| With visual map     | Description                                              | Equivalent command    |
+| ------------------- | -------------------------------------------------------- | --------------------- |
+| `<Enter><space>`    | Alignment around 1st whitespaces                         | `:'<,'>EasyAlign\ `   |
+| `<Enter>2<space>`   | Alignment around 2nd whitespaces                         | `:'<,'>EasyAlign2\ `  |
+| `<Enter>-<space>`   | Alignment around the last whitespaces                    | `:'<,'>EasyAlign-\ `  |
+| `<Enter>:`          | Alignment around 1st colon                               | `:'<,'>EasyAlign:`    |
+| `<Enter>=`          | Alignment around 1st equals signs (and the likes)        | `:'<,'>EasyAlign=`    |
+| `<Enter>2=`         | Alignment around 2nd equals signs (and the likes)        | `:'<,'>EasyAlign2=`   |
+| `<Enter>3=`         | Alignment around 3rd equals signs (and the likes)        | `:'<,'>EasyAlign3=`   |
+| `<Enter>*=`         | Alignment around all equals signs (and the likes)        | `:'<,'>EasyAlign*=`   |
+| `<Enter>**=`        | Left-right alternating alignment around all equals signs | `:'<,'>EasyAlign**=`  |
+| `<Enter><Enter>=`   | Right-justified alignment around 1st equals signs        | `:'<,'>EasyAlign!=`   |
+| `<Enter><Enter>**=` | Right-left alternating alignment around all equals signs | `:'<,'>EasyAlign!**=` |
+| ...                 | ...                                                      |                       |
+
+### Non-interactive mode
+
+Instead of going into the interactive mode, you can type in arguments to
+`:EasyAlign` command. In non-interactive mode, you can even use arbitrary
+regular expressions.
+
+```vim
+" Using predefined alignment rules
+:EasyAlign[!] [FIELD#] DELIMITER_KEY [OPTIONS]
+
+" Using arbitrary regular expressions
+:EasyAlign[!] [FIELD#] /REGEXP/ [OPTIONS]
+```
+
+For example, when aligning the following lines around colons and semi-colons,
+
+    apple;:banana::cake
+    data;;exchange:;format
+
+try these commands:
+
+- `:EasyAlign /[:;]\+/`
+- `:EasyAlign 2/[:;]\+/`
+- `:EasyAlign */[:;]\+/`
+- `:EasyAlign **/[:;]\+/`
+
+Notice that you can't append `\zs` to your regular expression to put delimiters
+on the left. It can be done by providing additional options in Vim dictionary
+format.
+
+- `:EasyAlign * /[:;]\+/ { 'stick_to_left': 1, 'left_margin': '' }`
+
+Then we get:
+
+    apple;: banana::   cake
+    data;;  exchange:; format
+
+Options keys are fuzzy-matched, so you can write as follows:
+
+- `:EasyAlign * /[:;]\+/ { 'stl': 1, 'l': 0 }`
+
+You can even omit spaces between the arguments, so concisely (or cryptically):
+
+- `:EasyAlign*/[:;]\+/{'s':1,'l':0}`
+
+Available options are as follows.
+
+| Atrribute        | Type             | Default                 |
+| ---------------- | ---------------- | ----------------------- |
+| left_margin      | number or string | 0                       |
+| right_margin     | number or string | 0                       |
+| stick_to_left    | boolean          | 0                       |
+| ignore_unmatched | boolean          | 1                       |
+| ignores          | array            | `['String', 'Comment']` |
+
+(The last two options will be described shortly in the following sections.)
 
 ### Partial alignment in blockwise-visual mode
 
 In blockwise-visual mode (`CTRL-V`), EasyAlign command aligns only the selected
-parts, instead of the whole lines in the range.
+text in the block, instead of the whole lines in the range.
 
 Consider the following case where you want to align text around `=>` operators.
 
@@ -82,9 +167,9 @@ my_hash = { :a => 1,
             :aaa => 3 }
 ```
 
-In non-blockwise visual mode (`v` / `V`), `<Enter>=` won't work since the assignment
-operator in the first line gets in the way.
-So we instead enter blockwise-visual mode (`CTRL-V`), and select the text *around*
+In non-blockwise visual mode (`v` / `V`), `<Enter>=` won't work since the
+assignment operator in the first line gets in the way. So we instead enter
+blockwise-visual mode (`CTRL-V`), and select the text *around*
 `=>` operators, then press `<Enter>=`.
 
 ```ruby
@@ -93,75 +178,183 @@ my_hash = { :a   => 1,
             :aaa => 3 }
 ```
 
-Defining custom alignment rules
--------------------------------
+However, in this case, we don't really need blockwise visual mode
+since the same can be easily done using the negative field number: `<Enter>-=`
+
+Global options
+--------------
+
+| Option                        | Type       | Default                 | Description                                        |
+| ----------------------------- | ---------- | ----------------------- | -------------------------------------------------- |
+| g:easy_align_ignores          | list       | `['String', 'Comment']` | Ignore delimiters in these syntax highlight groups |
+| g:easy_align_ignore_unmatched | boolean    | `1`                     | Ignore lines without matching delimiter            |
+| g:easy_align_delimiters       | dictionary | `{}`                    | Extend or override alignment rules                 |
+
+### Ignoring delimiters in comments or strings
+
+EasyAlign can be configured to ignore delimiters in certain syntax highlight
+groups, such as code comments or strings. By default, delimiters that are
+highlighted as code comments or strings are ignored.
 
 ```vim
-let g:easy_align_delimiters = {
-\ '>': { 'pattern': '>>\|=>\|>' },
-\ '/': { 'pattern': '//*' },
-\ 'x': {
-\     'pattern':       '[xX]',
-\     'margin_left':   ' <<<',
-\     'margin_right':  '>>> ',
-\     'stick_to_left': 0
-\   }
-\ }
+" Default:
+"   If a delimiter is in a highlight group whose name matches
+"   any of the followings, it will be ignored.
+let g:easy_align_ignores = ['Comment', 'String']
 ```
 
-Handling unmatched lines
-------------------------
+For example, the following paragraph
 
-EasyAlign by default ignores lines without the matching delimiters (except in right-justification mode).
-This is to ignore interleaved comments commonly found in code.
-
-For example, when aligning the following code block,
-
-```
+```ruby
 {
-  # Quantity of apples
+  # Quantity of apples: 1
   apple: 1,
-  # Quantity of bananas
+  # Quantity of bananas: 2
   bananas: 2,
-  # Quantity of grapefruits
-  grapefruits: 3
+  # Quantity of grape:fruits: 3
+  'grape:fruits': 3
 }
 ```
 
-we don't want the comment lines to affect the alignment,
-so this is usually what we want.
+becomes as follows on `<Enter>:` (or `:EasyAlign:`)
 
-```
+```ruby
 {
-  # Quantity of apples
-  apple:       1,
-  # Quantity of bananas
-  bananas:     2,
-  # Quantity of grapefruits
+  # Quantity of apples: 1
+  apple:          1,
+  # Quantity of bananas: 2
+  bananas:        2,
+  # Quantity of grape:fruits: 3
+  'grape:fruits': 3
+}
+```
+
+Naturally, this feature only works when syntax highlighting is enabled.
+
+You can change the default rule by either defining global `g:easy_align_ignores`
+array,
+
+```vim
+" Ignore nothing!
+let g:easy_align_ignores = []
+```
+
+or providing `ignores` option directly to `:EasyAlign` command
+
+```vim
+:EasyAlign:{'is':[]}
+```
+
+Then you get,
+
+```ruby
+{
+  # Quantity of apples:  1
+  apple:                 1,
+  # Quantity of bananas: 2
+  bananas:               2,
+  # Quantity of grape:   fruits: 3
+  'grape:                fruits': 3
+}
+```
+
+Satisfied? :satisfied:
+
+### Ignoring unmatched lines
+
+Lines without any matching delimiter are ignored as well (except in
+right-justification mode).
+
+For example, when aligning the following code block around the colons,
+
+```ruby
+{
+  apple: proc {
+    this_line_does_not_have_a_colon
+  },
+  bananas: 2,
   grapefruits: 3
 }
 ```
 
-However, this default behavior is configurable.
+this is usually what we want.
+
+```ruby
+{
+  apple:       proc {
+    this_line_does_not_have_a_colon
+  },
+  bananas:     2,
+  grapefruits: 3
+}
+```
+
+However, this default behavior is also configurable.
+
+One way is to set the global `g:easy_align_ignore_unmatched` variable to 0.
 
 ```vim
 let g:easy_align_ignore_unmatched = 0
 ```
 
+Or in non-interactive mode, you can provide `ignore_unmatched` option to
+`:EasyAlign` command as follows.
+
+```vim
+:EasyAlign:{'iu':0}
+```
+
 Then we get,
 
-```
+```ruby
 {
-  # Quantity of apples
-  apple:                     1,
-  # Quantity of bananas
-  bananas:                   2,
-  # Quantity of grapefruits
-  grapefruits:               3
+  apple:                             proc {
+    this_line_does_not_have_a_colon
+  },
+  bananas:                           2,
+  grapefruits:                       3
 }
 ```
 
+### Extending alignment rules
+
+Although the default rules should cover the most of the use cases,
+you can extend the rules by setting a dictionary named `g:easy_align_delimiters`.
+
+#### Example
+
+```vim
+let g:easy_align_delimiters = {
+\ '>': { 'pattern': '>>\|=>\|>' },
+\ '/': { 'pattern': '//\+\|/\*\|\*/', 'ignores': ['String'] },
+\ '#': { 'pattern': '#\+', 'ignores': ['String'] },
+\ ']': {
+\     'pattern':       '[\[\]]',
+\     'left_margin':   0,
+\     'right_margin':  0,
+\     'stick_to_left': 0
+\   },
+\ ')': {
+\     'pattern':       '[()]',
+\     'left_margin':   0,
+\     'right_margin':  0,
+\     'stick_to_left': 0
+\   }
+\ }
+```
+
+Examples and use cases
+----------------------
+
+See the [link](https://github.com/junegunn/vim-easy-align/blob/master/EXAMPLES.md)
+for more examples.
+
 Author
 ------
 
 [Junegunn Choi](https://github.com/junegunn)
+
+License
+-------
+
+MIT

autoload/easy_align.vim

@@ -1,95 +1,81 @@
-if exists("g:easy_align_loaded")
+" Copyright (c) 2013 Junegunn Choi
+"
+" MIT License
+"
+" Permission is hereby granted, free of charge, to any person obtaining
+" a copy of this software and associated documentation files (the
+" "Software"), to deal in the Software without restriction, including
+" without limitation the rights to use, copy, modify, merge, publish,
+" distribute, sublicense, and/or sell copies of the Software, and to
+" permit persons to whom the Software is furnished to do so, subject to
+" the following conditions:
+"
+" The above copyright notice and this permission notice shall be
+" included in all copies or substantial portions of the Software.
+"
+" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+" EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+" NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+" LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+" OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+" WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+if exists("g:loaded_easy_align")
   finish
 endif
-let g:easy_align_loaded = 1
+let g:loaded_easy_align = 1
 
 let s:easy_align_delimiters_default = {
-\  ' ': { 'pattern': ' ',  'margin_left': '',  'margin_right': '',  'stick_to_left': 0 },
-\  '=': { 'pattern': '===\|<=>\|\(&&\|||\|<<\|>>\)=\|=\~\|=>\|[:+/*!%^=><&|-]\?=',
-\                          'margin_left': ' ', 'margin_right': ' ', 'stick_to_left': 0 },
-\  ':': { 'pattern': ':',  'margin_left': '',  'margin_right': ' ', 'stick_to_left': 1 },
-\  ',': { 'pattern': ',',  'margin_left': '',  'margin_right': ' ', 'stick_to_left': 1 },
-\  '|': { 'pattern': '|',  'margin_left': ' ', 'margin_right': ' ', 'stick_to_left': 0 },
-\  '.': { 'pattern': '\.', 'margin_left': '',  'margin_right': '',  'stick_to_left': 0 }
+\  ' ': { 'pattern': ' ',  'left_margin': '',  'right_margin': '',  'stick_to_left': 0 },
+\  '=': { 'pattern': '===\|<=>\|\(&&\|||\|<<\|>>\)=\|=\~\|=>\|[:+/*!%^=><&|-]\?=[#?]\?',
+\                          'left_margin': ' ', 'right_margin': ' ', 'stick_to_left': 0 },
+\  ':': { 'pattern': ':',  'left_margin': '',  'right_margin': ' ', 'stick_to_left': 1 },
+\  ',': { 'pattern': ',',  'left_margin': '',  'right_margin': ' ', 'stick_to_left': 1 },
+\  '|': { 'pattern': '|',  'left_margin': ' ', 'right_margin': ' ', 'stick_to_left': 0 },
+\  '.': { 'pattern': '\.', 'left_margin': '',  'right_margin': '',  'stick_to_left': 0 },
+\  '{': { 'pattern': '(\@<!{',
+\                          'left_margin': ' ', 'right_margin': ' ', 'stick_to_left': 0 },
+\  '}': { 'pattern': '}',  'left_margin': ' ', 'right_margin': '',  'stick_to_left': 0 }
 \ }
 
 let s:just = ['', '[R]']
 
-function! s:do_align(just, fl, ll, fc, lc, pattern, nth, ml, mr, stick_to_left, recursive)
-  let lines         = {}
-  let max_just_len  = 0
-  let max_delim_len = 0
-  let max_tokens    = 0
-  let pattern       = '\s*\(' .a:pattern. '\)\s*'
-  for line in range(a:fl, a:ll)
-    let tokens = split(a:lc ?
-                      \ strpart(getline(line), a:fc - 1, a:lc - a:fc + 1) :
-                      \ strpart(getline(line), a:fc - 1),
-                      \ pattern.'\zs')
-    if empty(tokens)
-      continue
+let s:known_options = {
+\ 'margin_left': [0, 1], 'margin_right': [0, 1], 'stick_to_left': [0],
+\ 'left_margin': [0, 1], 'right_margin': [0, 1],
+\ 'ignores': [3], 'ignore_unmatched': [0]
+\ }
+
+if exists("*strwidth")
+  function! s:strwidth(str)
+    return strwidth(a:str)
+  endfunction
+else
+  function! s:strwidth(str)
+    return len(split(a:str, '\zs'))
+  endfunction
+endif
+
+function! s:highlighted_as(line, col, groups)
+  if empty(a:groups) | return 0 | endif
+  let hl = synIDattr(synID(a:line, a:col, 0), 'name')
+  for grp in a:groups
+    if hl =~# grp
+      return 1
     endif
-
-    " Preserve indentation
-    if match(tokens[0], '^\s*$') != -1
-      let tokens = extend([join(tokens[0:1], '')], tokens[2:-1])
-    endif
-    let max_tokens = max([len(tokens), max_tokens])
-
-    if len(tokens) < a:nth
-      continue
-    endif
-    let nth = a:nth - 1 " 0-based
-
-    let last   = tokens[nth]
-    let prefix = (nth > 0 ? join(tokens[0 : nth - 1], '') : '')
-    let token  = substitute(last, pattern.'$', '', '')
-    let suffix = join(tokens[nth + 1: -1], '')
-
-    if match(last, pattern.'$') == -1
-      if a:just == 0 && (!exists("g:easy_align_ignore_unmatched") || g:easy_align_ignore_unmatched)
-        continue
-      else
-        let delim = ''
-      endif
-    else
-      let delim = matchlist(last, pattern)[1]
-    endif
-
-    let max_just_len  = max([len(token.prefix), max_just_len])
-    let max_delim_len = max([len(delim), max_delim_len])
-    let lines[line]   = [prefix, token, delim, suffix]
   endfor
+  return 0
+endfunction
 
-  for [line, tokens] in items(lines)
-    let [prefix, token, delim, suffix] = tokens
-
-    let pad = repeat(' ', max_just_len - len(prefix) - len(token))
-    if a:just == 0
-      if a:stick_to_left
-        let suffix = pad . suffix
-      else
-        let token = token . pad
-      endif
-    elseif a:just == 1
-      let token = pad . token
-    endif
-
-    let delim   = repeat(' ', max_delim_len - len(delim)). delim
-    let cline   = getline(line)
-    let before  = strpart(cline, 0, a:fc - 1)
-    let after   = a:lc ? strpart(cline, a:lc) : ''
-
-    let ml      = empty(prefix . token) ? '' : a:ml
-    let mr      = (empty(suffix . after) || (empty(suffix) && stridx(after, a:mr) == 0)) ? '' : a:mr
-    let aligned = join([prefix, token, ml, delim, mr, suffix], '')
-    let aligned = empty(after) ? substitute(aligned, '\s*$', '', '') : aligned
-
-    call setline(line, before.aligned.after)
-  endfor
-
-  if a:recursive && a:nth < max_tokens
-    call s:do_align(a:just, a:fl, a:ll, a:fc, a:lc, a:pattern, a:nth + 1, a:ml, a:mr, a:stick_to_left, a:recursive)
+function! s:ignored_syntax()
+  if has('syntax') && exists('g:syntax_on')
+    " Backward-compatibility
+    return get(g:, 'easy_align_ignores',
+          \ (get(g:, 'easy_align_ignore_comment', 1) == 0) ?
+            \ ['String'] : ['String', 'Comment'])
+  else
+    return []
   endif
 endfunction
 
@@ -98,79 +84,394 @@ function! s:echon(l, n, d)
   echon "\rEasyAlign". s:just[a:l] ." (" .a:n.a:d. ")"
 endfunction
 
-function! easy_align#align(just, ...) range
-  let just      = a:just
-  let recursive = 0
-  let n         = ''
-  let ch        = ''
+function! s:exit(msg)
+  echon "\r". a:msg
+  throw 'exit'
+endfunction
 
-  if a:0 == 0
-    while 1
-      call s:echon(just, n, '')
+function! s:ltrim(str)
+  return substitute(a:str, '^\s*', '', '')
+endfunction
 
-      let c  = getchar()
-      let ch = nr2char(c)
-      if c == 3 || c == 27
-        return
-      elseif c == 13
-        let just = (just + 1) % len(s:just)
-      elseif c >= 48 && c <= 57
-        if n == '*'
-          break
-        else
-          let n = n . nr2char(c)
-        endif
-      elseif ch == '*'
-        if !empty(n)
-          break
-        else
-          let n = '*'
-        endif
-      else
-        break
-      endif
-    endwhile
-  elseif a:0 == 1
-    let tokens = matchlist(a:1, '^\([1-9][0-9]*\|\*\)\?\(.\)$')
-    if empty(tokens)
-      echo "Invalid arguments: ". a:1
-      return
-    endif
-    let [n, ch] = tokens[1:2]
-  elseif a:0 == 2
-    let n  = a:1
-    let ch = a:2
-  else
-    echo "Invalid number of arguments: ". a:0 ." (expected 0, 1, or 2)"
-    return
+function! s:rtrim(str)
+  return substitute(a:str, '\s*$', '', '')
+endfunction
+
+function! s:fuzzy_lu(key)
+  if has_key(s:known_options, a:key)
+    return a:key
   endif
 
-  if n == '*'
-    let n = 1
-    let recursive = 1
-  elseif empty(n)
-    let n = 1
-  elseif n != string(str2nr(n))
-    echon "\rInvalid field number: ". n
-    return
-  endif
+  let regexp  = '^' . substitute(substitute(a:key, '-', '_', 'g'), '\(.\)', '\1.*', 'g')
+  let matches = filter(keys(s:known_options), 'v:val =~ regexp')
 
-  let delimiters = extend(copy(s:easy_align_delimiters_default),
-                  \ exists("g:easy_align_delimiters") ? g:easy_align_delimiters : {})
-
-  if has_key(delimiters, ch)
-    let dict = delimiters[ch]
-    call s:do_align(just, a:firstline, a:lastline,
-                  \ visualmode() == '' ? min([col("'<"), col("'>")]) : 1,
-                  \ visualmode() == '' ? max([col("'<"), col("'>")]) : 0,
-                  \ get(dict, 'pattern', ch),
-                  \ n,
-                  \ get(dict, 'margin_left', ' '),
-                  \ get(dict, 'margin_right', ' '),
-                  \ get(dict, 'stick_to_left', 0), recursive)
-    call s:echon(just, (recursive ? '*' : n), ch)
+  if empty(matches)
+    call s:exit("Unknown option key: ". a:key)
+  elseif len(matches) == 1
+    return matches[0]
   else
-    echon "\rUnknown delimiter: ". ch
+    call s:exit("Ambiguous option key: ". a:key ." (" .join(matches, ', '). ")")
   endif
 endfunction
 
+function! s:normalize_options(opts)
+  let ret = {}
+  for k in keys(a:opts)
+    let v = a:opts[k]
+    let k = s:fuzzy_lu(k)
+    " Backward-compatibility
+    if k == 'margin_left'  | let k = 'left_margin'  | endif
+    if k == 'margin_right' | let k = 'right_margin' | endif
+    let ret[k] = v
+    unlet v
+  endfor
+  return s:validate_options(ret)
+endfunction
+
+function! s:validate_options(opts)
+  for k in keys(a:opts)
+    let v = a:opts[k]
+    if index(s:known_options[k], type(v)) == -1
+      call s:exit("Invalid type for option: ". k)
+    endif
+    unlet v
+  endfor
+  return a:opts
+endfunction
+
+function! s:do_align(just, all_tokens, fl, ll, fc, lc, pattern, nth, ml, mr, stick_to_left, ignore_unmatched, ignores, recursive)
+  let lines          = {}
+  let max_just_len   = 0
+  let max_delim_len  = 0
+  let max_tokens     = 0
+  let min_indent     = -1
+  let pattern        = '\s*\(' .a:pattern. '\)\s' . (a:stick_to_left ? '*' : '\{-}')
+
+  " Phase 1
+  for line in range(a:fl, a:ll)
+    if !has_key(a:all_tokens, line)
+      " Split line into the tokens by the delimiters
+      let raw_tokens = split(a:lc ?
+                        \ strpart(getline(line), a:fc - 1, a:lc - a:fc + 1) :
+                        \ strpart(getline(line), a:fc - 1),
+                        \ pattern.'\zs')
+      let concat = 0
+      if empty(a:ignores)
+        let tokens = raw_tokens
+      else
+        " Concat adjacent tokens that are split by ignorable delimiters
+        let tokens = []
+        let idx    = 0
+        for token in raw_tokens
+          let idx += len(token)
+          if concat
+            let tokens[len(tokens) - 1] .= token
+          else
+            call add(tokens, token)
+          endif
+          let concat = s:highlighted_as(line, idx + a:fc - 1, a:ignores)
+        endfor
+      endif
+
+      " Preserve indentation - merge first two tokens
+      if !empty(tokens) && match(tokens[0], '^\s*$') != -1
+        let tokens = extend([join(tokens[0:1], '')], tokens[2:-1])
+      endif
+
+      " Skip comment line
+      if concat && len(tokens) == 1 && a:ignore_unmatched
+        let tokens = []
+      endif
+
+      " Remember tokens for subsequent recursive calls
+      let a:all_tokens[line] = tokens
+    else
+      let tokens = a:all_tokens[line]
+    endif
+
+    " Skip empty lines
+    if empty(tokens)
+      continue
+    endif
+
+    " Calculate the maximum number of tokens for a line within the range
+    let max_tokens = max([len(tokens), max_tokens])
+
+    if a:nth > 0 " Positive field number
+      if len(tokens) < a:nth
+        continue
+      endif
+      let nth = a:nth - 1 " make it 0-based
+    else " Negative field number
+      let nth = len(tokens) + a:nth
+      if match(tokens[len(tokens) - 1], pattern.'$') == -1
+        let nth -= 1
+      endif
+
+      if nth < 0 || nth == len(tokens)
+        continue
+      endif
+    endif
+
+    let last   = tokens[nth]
+    let prefix = (nth > 0 ? join(tokens[0 : nth - 1], '') : '')
+    let token  = substitute(last, pattern.'$', '', '')
+
+    let delim = get(matchlist(last, pattern.'$'), 1, '')
+    if empty(delim) && a:just == 0 && a:ignore_unmatched
+      continue
+    endif
+
+    let indent        = len(matchstr(tokens[0], '^\s\+'))
+    if min_indent < 0 || indent < min_indent
+      let min_indent  = indent
+    endif
+    let max_just_len  = max([s:strwidth(prefix.token), max_just_len])
+    let max_delim_len = max([s:strwidth(delim), max_delim_len])
+    let lines[line]   = [nth, prefix, token, delim]
+  endfor
+
+  " Phase 2
+  for [line, elems] in items(lines)
+    let tokens = a:all_tokens[line]
+    let [nth, prefix, token, delim] = elems
+
+    " Remove the leading whitespaces of the next token
+    if len(tokens) > nth + 1
+      let tokens[nth + 1] = s:ltrim(tokens[nth + 1])
+    endif
+
+    " Pad the token with spaces
+    let pad = repeat(' ', max_just_len - s:strwidth(prefix) - s:strwidth(token))
+    let rpad = ''
+    if a:just == 0
+      if a:stick_to_left
+        let rpad = pad
+      else
+        let token = token . pad
+      endif
+    elseif a:just == 1
+      let token = pad . token
+    endif
+    let tokens[nth] = token
+
+    " Pad the delimiter
+    let dpad = repeat(' ', max_delim_len - s:strwidth(delim))
+    if a:stick_to_left
+      let rpad = rpad . dpad
+    else
+      let delim = dpad . delim
+    endif
+
+    " Before and after the range (for blockwise visual mode)
+    let cline   = getline(line)
+    let before  = strpart(cline, 0, a:fc - 1)
+    let after   = a:lc ? strpart(cline, a:lc) : ''
+
+    " Determine the left and right margin around the delimiter
+    let rest    = join(tokens[nth + 1 : -1], '')
+    let ml      = empty(prefix . token) ? '' : a:ml
+    let mr      = (empty(rest) ||
+          \ (empty(rest) && stridx(after, a:mr) == 0)) ? '' : a:mr
+
+    " Adjust indentation of the lines starting with a delimiter
+    let lpad = ''
+    if nth == 0
+      let ipad = repeat(' ', min_indent - len(strpart(before.token, '^\s\+').ml))
+      if a:just == 0
+        let token = ipad . token
+      else
+        let lpad = ipad
+      endif
+    endif
+
+    " Align the token
+    let aligned = join([lpad, token, ml, delim, mr, rpad], '')
+    let tokens[nth] = aligned
+
+    " Update the line
+    let newline = s:rtrim(before.join(tokens, '').after)
+    call setline(line, newline)
+  endfor
+
+  if a:recursive && a:nth < max_tokens
+    let just = a:recursive == 2 ? !a:just : a:just
+    call s:do_align(just, a:all_tokens, a:fl, a:ll, a:fc, a:lc, a:pattern,
+          \ a:nth + 1, a:ml, a:mr, a:stick_to_left, a:ignore_unmatched,
+          \ a:ignores, a:recursive)
+  endif
+endfunction
+
+function! s:interactive(just)
+  let just = a:just
+  let n    = ''
+  let ch   = ''
+
+  while 1
+    call s:echon(just, n, '')
+
+    let c  = getchar()
+    let ch = nr2char(c)
+    if c == 3 || c == 27 " CTRL-C / ESC
+      throw 'exit'
+    elseif c == '<27>kb' " Backspace
+      if len(n) > 0
+        let n = strpart(n, 0, len(n) - 1)
+      endif
+    elseif c == 13 " Enter key
+      let just = (just + 1) % len(s:just)
+    elseif ch == '-'
+      if empty(n)      | let n = '-'
+      elseif n == '-'  | let n = ''
+      else             | break
+      endif
+    elseif ch == '*'
+      if empty(n)      | let n = '*'
+      elseif n == '*'  | let n = '**'
+      elseif n == '**' | let n = ''
+      else             | break
+      endif
+    elseif c >= 48 && c <= 57 " Numbers
+      if n[0] == '*'   | break
+      else             | let n = n . ch
+      end
+    else
+      break
+    endif
+  endwhile
+  return [just, n, ch]
+endfunction
+
+function! s:parse_args(args)
+  let n      = ''
+  let ch     = ''
+  let args   = a:args
+  let cand   = ''
+  let option = {}
+
+  " Poor man's option parser
+  let idx = 0
+  while 1
+    let midx = match(args, '{.*}\s*$', idx)
+    if midx == -1 | break | endif
+
+    let cand = strpart(args, midx)
+    try
+      let o = eval(cand)
+      if type(o) == 4
+        let option = o
+        let args = strpart(args, 0, midx)
+        break
+      endif
+    catch
+      " Ignore
+    endtry
+    let idx = midx + 1
+  endwhile
+
+  " Invalid option dictionary
+  if len(substitute(cand, '\s', '', 'g')) > 2 && empty(option)
+    call s:exit("Invalid option: ". cand)
+  endif
+
+  " Has /Regexp/?
+  let matches = matchlist(args, '^\(.\{-}\)\s*/\(.*\)/\s*$')
+
+  " Found regexp
+  if !empty(matches)
+    let regexp = matches[2]
+    " Test regexp
+    try   | call matchlist('', regexp)
+    catch | call s:exit("Invalid regular expression: ". regexp)
+    endtry
+    " Unsupported regular expression
+    if match(regexp, '\\zs') != -1
+      call s:exit("Using \\zs is not allowed. Use stick_to_left option instead.")
+    endif
+    return [matches[1], regexp, option, 1]
+  else
+    let tokens = matchlist(args, '^\([1-9][0-9]*\|-[0-9]*\|\*\*\?\)\?\s*\(.\{-}\)\?$')
+    return [tokens[1], tokens[2], option, 0]
+  endif
+endfunction
+
+function! easy_align#align(just, expr) range
+  let just   = a:just
+  let recur  = 0
+  let n      = ''
+  let ch     = ''
+  let option = {}
+  let regexp = 0
+
+  try
+    if empty(a:expr)
+      let [just, n, ch] = s:interactive(just)
+    else
+      let [n, ch, option, regexp] = s:parse_args(a:expr)
+      if empty(ch)
+        " Try swapping n and ch
+        let [n, ch] = ['', n]
+      endif
+    endif
+  catch 'exit'
+    return
+  endtry
+
+  if n == '*'      | let [nth, recur] = [1, 1]
+  elseif n == '**' | let [nth, recur] = [1, 2]
+  elseif n == '-'  | let nth = -1
+  elseif empty(n)  | let nth = 1
+  elseif n == '0' || ( n != '-0' && n != string(str2nr(n)) )
+    echon "\rInvalid field number: ". n
+    return
+  else
+    let nth = n
+  endif
+
+  let delimiters = s:easy_align_delimiters_default
+  if exists('g:easy_align_delimiters')
+    let delimiters = extend(copy(delimiters), g:easy_align_delimiters)
+  endif
+
+  if regexp
+    let dict = { 'pattern': ch }
+  else
+    if ch =~ '^\\\s\+$'
+      let ch = ' '
+    elseif ch =~ '^\\\\\s\+$'
+      let ch = '\'
+    endif
+    if !has_key(delimiters, ch)
+      echon "\rUnknown delimiter key: ". ch
+      return
+    endif
+    let dict = delimiters[ch]
+  endif
+
+  try
+    if !empty(option)
+      let dict = extend(copy(dict), s:normalize_options(option))
+    endif
+  catch 'exit'
+    return
+  endtry
+
+  let ml = get(dict, 'left_margin', ' ')
+  let mr = get(dict, 'right_margin', ' ')
+  if type(ml) == 0 | let ml = repeat(' ', ml) | endif
+  if type(mr) == 0 | let mr = repeat(' ', mr) | endif
+
+  call s:do_align(just, {}, a:firstline, a:lastline,
+    \ visualmode() == '' ? min([col("'<"), col("'>")]) : 1,
+    \ visualmode() == '' ? max([col("'<"), col("'>")]) : 0,
+    \ get(dict, 'pattern', ch),
+    \ nth,
+    \ ml,
+    \ mr,
+    \ get(dict, 'stick_to_left', 0),
+    \ get(dict, 'ignore_unmatched', get(g:, 'easy_align_ignore_unmatched', 1)),
+    \ get(dict, 'ignores', s:ignored_syntax()),
+    \ recur)
+  call s:echon(just, n, regexp ? '/'.ch.'/' : ch)
+endfunction
+

doc/easy_align.txt

@@ -7,26 +7,41 @@ A simple, easy-to-use Vim alignment plugin without too much ambition.
   Source: https://github.com/junegunn/vim-easy-align
 
 
-EasyAlign                                                     *EasyAlign*
+EasyAlign                                      *:EasyAlign* *:EasyAlign!*
 -------------------------------------------------------------------------
 
-vim-easy-align defines interactive `:EasyAlign` command in the visual mode.
+vim-easy-align defines `:EasyAlign` command in the visual mode.
+(:EasyAlign! is the right-justification version.)
 
-For convenience, it is advised that you define a mapping for triggering it
-in your `.vimrc`.
+| Mode                      | Command                                     |
+| ------------------------- | ------------------------------------------- |
+| Interactive mode          | :EasyAlign                                  |
+| Using predefined rules    | :EasyAlign [FIELD#] DELIMITER_KEY [OPTIONS] |
+| Using regular expressions | :EasyAlign [FIELD#] /REGEXP/ [OPTIONS]      |
+
+
+Interactive mode
+-------------------------------------------------------------------------
+
+The command will go into the interactive mode when no argument is given.
+For convenience, it is advised that you define a mapping for triggering it in
+your `.vimrc`.
 
     vnoremap <silent> <Enter> :EasyAlign<cr>
 
-With this mapping, you can align selected lines with a few keystrokes.
+With this mapping, you can align selected lines of text with a few keystrokes.
 
 1. <Enter> key to start interactive EasyAlign command
 2. Optional Enter keys to switch justficiation mode (default: left)
 3. Optional field number (default: 1)
-    1        Alignment around 1st delimiters
-    2        Alignment around 2nd delimiters
+    1        Around the 1st occurrences of delimiters
+    2        Around the 2nd occurrences of delimiters
+    *        Around all occurrences of delimiters
+    **       Left-right alternating alignment around all delimiters
+    -        Around the last occurrences of delimiters (`-1`)
+    -2       Around the second to last occurrences of delimiters
     ...
-    *        Alignment around all delimiters (recursive)
-4. Delimiter
+4. Delimiter key (a single keystroke)
     <space>  General alignment around whitespaces
     =        Operators containing equals sign (=, ==, !=, +=, &&=, ...)
     :        Suitable for formatting JSON or YAML
@@ -38,85 +53,211 @@ During the key sequence, <Enter> key will toggle right-justification mode.
 
 Examples:
 
-  <Enter>=         Alignment around 1st equals signs (and the likes)
-  <Enter>2=        Alignment around 2nd equals signs (and the likes)
-  <Enter>3=        Alignment around 3rd equals signs (and the likes)
-  <Enter>*=        Alignment around all equals signs (and the likes)
-  <Enter><Enter>=  Right-justified alignment around 1st equals signs
-  <Enter><space>   Alignment around 1st whitespace
-  <Enter>2<space>  Alignment around 2nd whitespace
-  <Enter>:         Alignment around 1st colon
+  <Enter><space>     Alignment around 1st whitespaces
+  <Enter>2<space>    Alignment around 2nd whitespaces
+  <Enter>-<space>    Alignment around the last whitespaces
+  <Enter>:           Alignment around 1st colon
+  <Enter>=           Alignment around 1st equals signs (and the likes)
+  <Enter>2=          Alignment around 2nd equals signs (and the likes)
+  <Enter>3=          Alignment around 3rd equals signs (and the likes)
+  <Enter>*=          Alignment around all equals signs (and the likes)
+  <Enter>**=         Left-right alternating alignment around all equals signs
+  <Enter><Enter>=    Right-justified alignment around 1st equals signs
+  <Enter><Enter>**=  Right-left alternating alignment around all equals signs
 
 
-EasyAlignRight                                           *EasyAlignRight*
+Non-interactive mode
 -------------------------------------------------------------------------
 
-EasyAlignRight is the right-justified version of EasyAlign command.
+Instead of going into the interactive mode, you can type in arguments to
+`:EasyAlign` command. In non-interactive mode, you can even use arbitrary
+regular expressions.
+
+    " Using predefined alignment rules
+    :EasyAlign[!] [FIELD#] DELIMITER_KEY [OPTIONS]
+
+    " Using arbitrary regular expressions
+    :EasyAlign[!] [FIELD#] /REGEXP/ [OPTIONS]
+
+For example, when aligning the following lines around colons and semi-colons,
+
+    apple;:banana::cake
+    data;;exchange:;format
+
+try these commands:
+
+- :EasyAlign /[:;]\+/
+- :EasyAlign 2/[:;]\+/
+- :EasyAlign */[:;]\+/
+- :EasyAlign **/[:;]\+/
+
+Notice that you can't append `\zs` to your regular expression to put delimiters
+on the left. It can be done by providing additional options in Vim dictionary
+format.
+
+- :EasyAlign * /[:;]\+/ { 'stick_to_left': 1, 'left_margin': '' }
+
+Then we get:
+
+    apple;: banana::   cake
+    data;;  exchange:; format
+
+Options keys are fuzzy-matched, so you can write as follows:
+
+- :EasyAlign * /[:;]\+/ { 'stl': 1, 'l': '' }
+
+You can even omit spaces between the arguments, so concisely (or cryptically):
+
+- :EasyAlign*/[:;]\+/{'s':1,'l':''}
+
+Available options are as follows.
+
+| Atrribute        | Type             | Default                 |
+| ---------------- | ---------------- | ----------------------- |
+| left_margin      | number or string | 0                       |
+| right_margin     | number or string | 0                       |
+| stick_to_left    | boolean          | 0                       |
+| ignore_unmatched | boolean          | 1                       |
+| ignores          | array            | `['String', 'Comment']` |
 
 
 Partial alignment in blockwise-visual mode
 -------------------------------------------------------------------------
 
 In blockwise-visual mode (`CTRL-V`), EasyAlign command aligns only
-the selected parts, instead of the whole lines in the range.
+the selected text in the block, instead of the whole lines in the range.
 
 
-
-Defining custom alignment rules                 *g:easy_align_delimiters*
+Ignoring delimiters in comments or strings         *g:easy_align_ignores*
 -------------------------------------------------------------------------
 
-    let g:easy_align_delimiters = {
-    \ '/': { 'pattern': '//*' },
-    \ 'x': {
-    \     'pattern':       '[xX]',
-    \     'margin_left':   ' <<<',
-    \     'margin_right':  '>>> ',
-    \     'stick_to_left': 0
-    \   }
-    \ }
+EasyAlign can be configured to ignore delimiters in certain syntax
+highlight groups, such as code comments or strings. By default, delimiters
+that are highlighted as code comments or strings are ignored.
 
+    " Default:
+    "   If a delimiter is in a highlight group whose name matches
+    "   any of the followings, it will be ignored.
+    let g:easy_align_ignores = ['Comment', 'String']
 
-Handling unmatched lines                  *g:easy_align_ignore_unmatched*
--------------------------------------------------------------------------
-
-EasyAlign by default ignores lines without the matching delimiters
-(except in right-justification mode).
-This is to ignore interleaved comments commonly found in code.
-
-For example, when aligning the following code,
+For example, the following paragraph
 
     {
-      # Quantity of apples
+      # Quantity of apples: 1
       apple: 1,
-      # Quantity of bananas
+      # Quantity of bananas: 2
+      bananas: 2,
+      # Quantity of grape:fruits: 3
+      'grape:fruits': 3
+    }
+
+becomes as follows on `<Enter>:`
+
+    {
+      # Quantity of apples: 1
+      apple:          1,
+      # Quantity of bananas: 2
+      bananas:        2,
+      # Quantity of grape:fruits: 3
+      'grape:fruits': 3
+    }
+
+Naturally, this feature only works when syntax highlighting is enabled.
+
+You can change the default rule by either defining global `g:easy_align_ignores`
+array,
+
+    " Ignore nothing!
+    let g:easy_align_ignores = []
+
+or providing `ignores` option directly to :EasyAlign command
+
+    :EasyAlign:{'is':[]}
+
+Then you get,
+
+    {
+      # Quantity of apples:  1
+      apple:                 1,
+      # Quantity of bananas: 2
+      bananas:               2,
+      # Quantity of grape:   fruits: 3
+      'grape:                fruits': 3
+    }
+
+
+Ignoring unmatched lines                  *g:easy_align_ignore_unmatched*
+-------------------------------------------------------------------------
+
+Lines without any matching delimiter are ignored as well (except in
+right-justification mode).
+
+For example, when aligning the following code block around the colons,
+
+    {
+      apple: proc {
+        this_line_does_not_have_a_colon
+      },
       bananas: 2,
-      # Quantity of grapefruits
       grapefruits: 3
     }
 
 this is usually what we want.
 
     {
-      # Quantity of apples
-      apple:       1,
-      # Quantity of bananas
+      apple:       proc {
+        this_line_does_not_have_a_colon
+      },
       bananas:     2,
-      # Quantity of grapefruits
       grapefruits: 3
     }
 
-However, this default behavior is configurable.
+However, this default behavior is also configurable.
+
+One way is to set the global `g:easy_align_ignore_unmatched` variable to 0.
 
     let g:easy_align_ignore_unmatched = 0
 
+Or in non-interactive mode, you can provide `ignore_unmatched` option to
+`:EasyAlign` command as follows.
+
+    :EasyAlign:{'iu':0}
+
+
 Then we get,
 
     {
-      # Quantity of apples
-      apple:                     1,
-      # Quantity of bananas
-      bananas:                   2,
-      # Quantity of grapefruits
-      grapefruits:               3
+      apple:                             proc {
+        this_line_does_not_have_a_colon
+      },
+      bananas:                           2,
+      grapefruits:                       3
     }
 
+
+Extending alignment rules                       *g:easy_align_delimiters*
+-------------------------------------------------------------------------
+
+Although the default rules should cover the most of the use cases,
+you can extend the rules by setting a dictionary named
+`g:easy_align_delimiters`.
+
+    let g:easy_align_delimiters = {
+    \ '>': { 'pattern': '>>\|=>\|>' },
+    \ '/': { 'pattern': '//\+\|/\*\|\*/', 'ignores': ['String'] },
+    \ '#': { 'pattern': '#\+', 'ignores': ['String'] },
+    \ ']': {
+    \     'pattern':       '[\[\]]',
+    \     'left_margin':   0,
+    \     'right_margin':  0,
+    \     'stick_to_left': 0
+    \   },
+    \ ')': {
+    \     'pattern':       '[()]',
+    \     'left_margin':   0,
+    \     'right_margin':  0,
+    \     'stick_to_left': 0
+    \   }
+    \ }
+
+

plugin/easy_align.vim

@@ -1,7 +1,29 @@
-if exists("g:easy_align_plugin_loaded")
+" Copyright (c) 2013 Junegunn Choi
+"
+" MIT License
+"
+" Permission is hereby granted, free of charge, to any person obtaining
+" a copy of this software and associated documentation files (the
+" "Software"), to deal in the Software without restriction, including
+" without limitation the rights to use, copy, modify, merge, publish,
+" distribute, sublicense, and/or sell copies of the Software, and to
+" permit persons to whom the Software is furnished to do so, subject to
+" the following conditions:
+"
+" The above copyright notice and this permission notice shall be
+" included in all copies or substantial portions of the Software.
+"
+" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+" EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+" NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+" LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+" OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+" WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+if exists("g:loaded_easy_align_plugin")
   finish
 endif
-let g:easy_align_plugin_loaded = 1
+let g:loaded_easy_align_plugin = 1
 
-command! -nargs=* -range EasyAlign <line1>,<line2>call easy_align#align(0, <f-args>)
-command! -nargs=* -range EasyAlignRight <line1>,<line2>call easy_align#align(1, <f-args>)
+command! -nargs=* -range -bang EasyAlign <line1>,<line2>call easy_align#align('<bang>' == '!', <q-args>)

test/basic.expected

@@ -0,0 +1,358 @@
+" :source run.vim
+" @a
+
+Pa  ul  Mc  Ca  rt  ne  y{  {1  }}  94 2
+Ge  or  ge  Ha  rr  is  on  {{  1}  }9  43
+Ri  ng  o   St  ar  r   {{  1}  }9  40
+Pe  te  Be  st  {{  1}  }9  41
+
+  Paul McCartney{{1}}942
+George Harrison {{1}}943
+ Ringo Starr    {{1}}940
+  Pete Best     {{1}}941
+
+  Paul McCartney 1942
+George Harrison  1943
+ Ringo Starr     1940
+  Pete Best      1941
+
+Paul  McCartney 1942
+George Harrison 1943
+Ringo     Starr 1940
+Pete       Best 1941
+
+Paul   McCartney 1942
+George Harrison 1943
+Ringo  Starr 1940
+Pete   Best 1941
+
+Paul McCartney  1942
+George Harrison 1943
+Ringo Starr     1940
+Pete Best       1941
+
+Paul   McCartney 1942
+George  Harrison 1943
+Ringo      Starr 1940
+Pete        Best 1941
+
+  Paul McCartney 1942
+George  Harrison 1943
+ Ringo     Starr 1940
+  Pete      Best 1941
+
+Paul  McCartney 1942
+George Harrison 1943
+Ringo     Starr 1940
+Pete       Best 1941
+
+  Paul McCartney 1942
+George Harrison 1943
+ Ringo Starr 1940
+  Pete Best 1941
+
+Paul   McCartney 1942
+George Harrison  1943
+Ringo  Starr     1940
+Pete   Best      1941
+
+Paul McCartney  1942
+George Harrison 1943
+Ringo Starr     1940
+Pete Best       1941
+
+Paul   McCartney 1942
+George Harrison 1943
+Ringo  Starr 1940
+Pete   Best 1941
+
+|     Option | Type    | Default | Description                                    |
+|         -- | --      |      -- | --                                             |
+|    threads | Fixnum  |       1 | number of threads in the thread pool           |
+|     queues | Fixnum  |       1 | number of concurrent queues                    |
+| queue_size | Fixnum  |    1000 | size of each queue                             |
+|   interval | Numeric |       0 | dispatcher interval for batch processing       |
+|      batch | Boolean |   false | enables batch processing mode                  |
+| batch_size | Fixnum  |     nil | number of maximum items to be assigned at once |
+|     logger | Logger  |     nil | logger instance for debug logs                 |
+
+|     Option |    Type | Default |                                    Description |
+|         -- |      -- |      -- |                                             -- |
+|    threads |  Fixnum |       1 |           number of threads in the thread pool |
+|     queues |  Fixnum |       1 |                    number of concurrent queues |
+| queue_size |  Fixnum |    1000 |                             size of each queue |
+|   interval | Numeric |       0 |       dispatcher interval for batch processing |
+|      batch | Boolean |   false |                  enables batch processing mode |
+| batch_size |  Fixnum |     nil | number of maximum items to be assigned at once |
+|     logger |  Logger |     nil |                 logger instance for debug logs |
+
+| Option     | Type    | Default | Description                                    |
+| --         | --      | --      | --                                             |
+| threads    | Fixnum  | 1       | number of threads in the thread pool           |
+| queues     | Fixnum  | 1       | number of concurrent queues                    |
+| queue_size | Fixnum  | 1000    | size of each queue                             |
+| interval   | Numeric | 0       | dispatcher interval for batch processing       |
+| batch      | Boolean | false   | enables batch processing mode                  |
+| batch_size | Fixnum  | nil     | number of maximum items to be assigned at once |
+| logger     | Logger  | nil     | logger instance for debug logs                 |
+
+aaa,   bb,         c
+d,     eeeeeee
+fffff, gggggggggg,
+h,     ,           ii
+j,     ,           k
+
+```ruby
+
+              a   =
+              a   =        1
+           bbbb   =        2
+        ccccccc   =        3
+ccccccccccccccc
+            ddd   =        4
+           eeee ===      eee  = eee = eee=f
+            fff   =      ggg += gg &&= gg
+              g  != hhhhhhhh == 888
+              i  :=        5
+              i  %=        5
+              i  *=        5
+              j  =~        5
+              j  >=        5
+             aa  =>      123
+             aa <<=      123
+             aa >>=      123
+            bbb  =>      123
+              c  =>  1233123
+              d  =>      123
+         dddddd &&=      123
+         dddddd ||=      123
+         dddddd  /=      123
+             gg <=>       ee
+
+a         =
+a         =        1
+bbbb      =        2
+ccccccc   =        3
+ccccccccccccccc
+ddd       =        4
+eeee    ===      eee  = eee   = eee = f
+fff       =      ggg += gg  &&=  gg
+g        != hhhhhhhh == 888
+i        :=        5
+i        %=        5
+i        *=        5
+j        =~        5
+j        >=        5
+aa       =>      123
+aa      <<=      123
+aa      >>=      123
+bbb      =>      123
+c        =>  1233123
+d        =>      123
+dddddd  &&=      123
+dddddd  ||=      123
+dddddd   /=      123
+gg      <=>       ee
+
+a         =
+a         = 1
+bbbb      = 2
+ccccccc   = 3
+ccccccccccccccc
+ddd       = 4
+eeee    === eee       = eee   = eee = f
+fff       = ggg      += gg  &&= gg
+g        != hhhhhhhh == 888
+i        := 5
+i        %= 5
+i        *= 5
+j        =~ 5
+j        >= 5
+aa       => 123
+aa      <<= 123
+aa      >>= 123
+bbb      => 123
+c        => 1233123
+d        => 123
+dddddd  &&= 123
+dddddd  ||= 123
+dddddd   /= 123
+gg      <=> ee
+
+a         =
+a         = 1
+bbbb      = 2
+ccccccc   = 3
+ccccccccccccccc
+ddd       = 4
+eeee    === eee = eee = eee=f
+fff       = ggg += gg &&= gg
+g        != hhhhhhhh == 888
+i        := 5
+i        %= 5
+i        *= 5
+j        =~ 5
+j        >= 5
+aa       => 123
+aa      <<= 123
+aa      >>= 123
+bbb      => 123
+c        => 1233123
+d        => 123
+dddddd  &&= 123
+dddddd  ||= 123
+dddddd   /= 123
+gg      <=> ee
+
+options = {       :caching => nil,
+                 :versions => 3,
+            "cache=blocks" => false }.merge(options)
+
+options = { :caching       => nil,
+            :versions      => 3,
+            "cache=blocks" => false }.merge(options)
+
+options                     = { :caching => nil,
+            :versions      => 3,
+            "cache=blocks" => false }.merge(options)
+
+apple = 1              # comment not aligned
+banana = 'Gros Michel' # comment 2
+
+# let g:easy_align_delimiters = { '#': { 'pattern': '#\+', 'ignores': ['String'] } }
+
+apple = 1              # comment not aligned
+apricot = 'DAD' + 'F#AD'
+banana = 'Gros Michel' # comment 2
+
+apple = 1 # comment not aligned
+apricot = 'DAD' + 'F#AD'
+banana = 'Gros Michel' # comment 2
+
+```
+
+```yaml
+
+mysql:
+  # JDBC driver for MySQL database:
+  driver:      com.mysql.jdbc.Driver
+  # JDBC URL for the connection (jdbc:mysql://HOSTNAME/DATABASE)
+  url:         jdbc:mysql://localhost/test
+  database:    test
+  "user:pass": r00t:pa55
+
+```
+```c
+
+/* a */ b          = c
+aa                >= bb
+// aaa             = bbb        = cccc
+/* aaaa            = */ bbbb  === cccc   " = dddd   = " = eeee
+aaaaa /* bbbbb */ == ccccc /*  != eeeee    = */   === fffff
+
+/* a */ b           = c
+aa                 >= bb
+// aaa = bbb = cccc
+/* aaaa = */ bbbb === cccc   " = dddd = "      = eeee
+aaaaa /* bbbbb */  == ccccc /* != eeeee = */ === fffff
+
+```
+
+my_object
+      .method1    .chain
+    .second_method.call
+      .third      .call
+     .method_4    .execute
+
+my_object
+         .method1      .  chain
+         .second_method.   call
+         .third        .   call
+         .method_4     .execute
+
+my_object
+    .      method1.chain
+    .second_method.call
+    .        third.call
+    .     method_4.execute
+
+my_object
+         .      method1.chain
+         .second_method.call
+         .        third.call
+         .     method_4.execute
+
+my_object
+         .      method1.  chain
+         .second_method.   call
+         .        third.   call
+         .     method_4.execute
+
+my_object
+    .method1      .chain
+    .second_method.call
+    .third        .call
+    .method_4     .execute
+
+my_object
+    .method1.chain
+    .second_method.call
+    .third.call
+    .method_4.execute
+
+my_object        .
+      method1    .chain.
+    second_method.call.
+      third      .call.
+     method_4    .execute
+
+  | Option     |    Type | Default |                                    Description |
+  | --         |      -- | --      |                                             -- |
+  | threads    |  Fixnum | 1       |           number of threads in the thread pool |
+  | queues     |  Fixnum | 1       |                    number of concurrent queues |
+  | queue_size |  Fixnum | 1000    |                             size of each queue |
+  | interval   | Numeric | 0       |       dispatcher interval for batch processing |
+  | batch      | Boolean | false   |                  enables batch processing mode |
+  | batch_size |  Fixnum | nil     | number of maximum items to be assigned at once |
+  | logger     |  Logger | nil     |                 logger instance for debug logs |
+
+  |     Option |    Type | Default |                                    Description |
+  |         -- |      -- |      -- |                                             -- |
+  |    threads |  Fixnum |       1 |           number of threads in the thread pool |
+  |     queues |  Fixnum |       1 |                    number of concurrent queues |
+  | queue_size |  Fixnum |    1000 |                             size of each queue |
+  |   interval | Numeric |       0 |       dispatcher interval for batch processing |
+  |      batch | Boolean |   false |                  enables batch processing mode |
+  | batch_size |  Fixnum |     nil | number of maximum items to be assigned at once |
+  |     logger |  Logger |     nil |                 logger instance for debug logs |
+
+  | Option     | Type    | Default | Description                                    |
+  | --         | --      | --      | --                                             |
+  | threads    | Fixnum  | 1       | number of threads in the thread pool           |
+  | queues     | Fixnum  | 1       | number of concurrent queues                    |
+  | queue_size | Fixnum  | 1000    | size of each queue                             |
+  | interval   | Numeric | 0       | dispatcher interval for batch processing       |
+  | batch      | Boolean | false   | enables batch processing mode                  |
+  | batch_size | Fixnum  | nil     | number of maximum items to be assigned at once |
+  | logger     | Logger  | nil     | logger instance for debug logs                 |
+
+  |Option         |Type        |Default     |Description                                        |
+  |--             |--          |--          |--                                                 |
+  |threads        |Fixnum      |1           |number of threads in the thread pool               |
+  |queues         |Fixnum      |1           |number of concurrent queues                        |
+  |queue_size     |Fixnum      |1000        |size of each queue                                 |
+  |interval       |Numeric     |0           |dispatcher interval for batch processing           |
+  |batch          |Boolean     |false       |enables batch processing mode                      |
+  |batch_size     |Fixnum      |nil         |number of maximum items to be assigned at once     |
+  |logger         |Logger      |nil         |logger instance for debug logs                     |
+
+  |    Option    <|    Type   <|    Default<|    Description                                   <|
+  |    --        <|    --     <|    --     <|    --                                            <|
+  |    threads   <|    Fixnum <|    1      <|    number of threads in the thread pool          <|
+  |    queues    <|    Fixnum <|    1      <|    number of concurrent queues                   <|
+  |    queue_size<|    Fixnum <|    1000   <|    size of each queue                            <|
+  |    interval  <|    Numeric<|    0      <|    dispatcher interval for batch processing      <|
+  |    batch     <|    Boolean<|    false  <|    enables batch processing mode                 <|
+  |    batch_size<|    Fixnum <|    nil    <|    number of maximum items to be assigned at once<|
+  |    logger    <|    Logger <|    nil    <|    logger instance for debug logs                <|
+

test/basic.md

@@ -0,0 +1,109 @@
+" :source run.vim
+" @a
+
+Paul McCartney 1942
+George Harrison 1943
+Ringo Starr 1940
+Pete Best 1941
+
+| Option| Type | Default | Description |
+|--|--|--|--|
+| threads | Fixnum | 1 | number of threads in the thread pool |
+|queues |Fixnum | 1 | number of concurrent queues |
+|queue_size | Fixnum | 1000 | size of each queue |
+|   interval | Numeric | 0 | dispatcher interval for batch processing |
+|batch | Boolean | false | enables batch processing mode |
+ |batch_size | Fixnum | nil | number of maximum items to be assigned at once |
+ |logger | Logger | nil | logger instance for debug logs |
+
+aaa,   bb,c
+d,eeeeeee
+fffff, gggggggggg,
+h, ,           ii
+j,,k
+
+```ruby
+
+a =
+a = 1
+bbbb = 2
+ccccccc = 3
+ccccccccccccccc
+ddd = 4
+eeee === eee = eee = eee=f
+fff = ggg += gg &&= gg
+g != hhhhhhhh == 888
+i   := 5
+i     %= 5
+i       *= 5
+j     =~ 5
+j   >= 5
+aa      =>         123
+aa <<= 123
+aa        >>= 123
+bbb               => 123
+c     => 1233123
+d   =>      123
+dddddd &&= 123
+dddddd ||= 123
+dddddd /= 123
+gg <=> ee
+
+options = { :caching => nil,
+            :versions => 3,
+            "cache=blocks" => false }.merge(options)
+
+apple = 1 # comment not aligned
+banana = 'Gros Michel' # comment 2
+
+# let g:easy_align_delimiters = { '#': { 'pattern': '#\+', 'ignores': ['String'] } }
+
+apple = 1 # comment not aligned
+apricot = 'DAD' + 'F#AD'
+banana = 'Gros Michel' # comment 2
+
+```
+
+```yaml
+
+mysql:
+  # JDBC driver for MySQL database:
+  driver: com.mysql.jdbc.Driver
+  # JDBC URL for the connection (jdbc:mysql://HOSTNAME/DATABASE)
+  url: jdbc:mysql://localhost/test
+  database: test
+  "user:pass":r00t:pa55
+
+```
+```c
+
+/* a */ b = c
+aa >= bb
+// aaa = bbb = cccc
+/* aaaa = */ bbbb   === cccc   " = dddd = " = eeee
+aaaaa /* bbbbb */      == ccccc /* != eeeee = */ === fffff
+
+```
+
+my_object
+      .method1.chain
+    .second_method.call
+      .third.call
+     .method_4.execute
+
+my_object.
+      method1.chain.
+    second_method.call.
+      third.call.
+     method_4.execute
+
+   | Option| Type | Default | Description |
+    |--|--|--|--|
+       | threads | Fixnum | 1 | number of threads in the thread pool |
+  |queues |Fixnum | 1 | number of concurrent queues |
+   |queue_size | Fixnum | 1000 | size of each queue |
+    |   interval | Numeric | 0 | dispatcher interval for batch processing |
+       |batch | Boolean | false | enables batch processing mode |
+   |batch_size | Fixnum | nil | number of maximum items to be assigned at once |
+   |logger | Logger | nil | logger instance for debug logs |
+

test/basic.script

@@ -0,0 +1 @@
+4Gvipjyvip

test/include.vim

@@ -0,0 +1,42 @@
+function! GFM()
+  let syntaxes = {
+  \ 'ruby':   'syntax/ruby.vim',
+  \ 'yaml':   'syntax/yaml.vim',
+  \ 'vim':    'syntax/vim.vim',
+  \ 'sh':     'syntax/sh.vim',
+  \ 'python': 'syntax/python.vim',
+  \ 'java':   'syntax/java.vim',
+  \ 'c':      'syntax/c.vim'
+  \ }
+
+  for [lang, syn] in items(syntaxes)
+    unlet b:current_syntax
+    silent! exec printf("syntax include @%s %s", lang, syn)
+    exec printf("syntax region %sSnip matchgroup=Snip start='```%s' end='```' contains=@%s",
+                \ lang, lang, lang)
+  endfor
+  let b:current_syntax='mkd'
+endfunction
+
+silent! unlet g:easy_align_delimiters
+silent! unlet g:easy_align_ignore_unmatched
+silent! unlet g:easy_align_ignores
+
+vnoremap <silent> <Enter> :EasyAlign<cr>
+
+noremap  <silent> <C-k> <nop>
+noremap  <silent> <C-j> <nop>
+noremap  <silent> <C-h> <nop>
+noremap  <silent> <C-l> <nop>
+vnoremap <silent> <C-k> <nop>
+vnoremap <silent> <C-j> <nop>
+vnoremap <silent> <C-h> <nop>
+vnoremap <silent> <C-l> <nop>
+
+set nolazyredraw
+set buftype=nofile
+
+silent! ScrollPositionHide
+
+call GFM()
+

test/regexp.expected

@@ -0,0 +1,93 @@
+" :source run.vim
+" @a
+
+apple;:banana  :: cake
+data;;exchange :; format
+
+apple ;: banana   ::   cake
+ data ;; exchange :; format
+
+apple ;:   banana :: cake
+data  ;; exchange :; format
+
+apple ;:____banana::cake
+data  ;;____exchange:;format
+
+apple ;  : banana   :  : cake
+data  ;  ; exchange :  ; format
+
+ap  pl  e;  :b  an  an  a:  :c  ak e
+da  ta  ;;  ex  ch  an  ge  :;  fo  rm  at
+
+ap ple;:banana::cake
+da ta;;exchange:;format
+
+apple???;:~~~banana???::~~~  cake
+data???;;~~~ exchange???:;~~~format
+
+apple;: banana::cake
+data;;  exchange:;format
+
+apple<<<;:>>>banana::cake
+data <<<;;>>>exchange:;format
+
+apple ;: banana::cake
+data  ;; exchange:;format
+
+apple;:banana  :: cake
+data;;exchange :; format
+
+apple ;: banana   :: cake
+data  ;; exchange :; format
+
+apple ;: banana   :: cake
+data  ;; exchange :; format
+
+apple ;: banana   :: cake
+data  ;; exchange :; format
+
+apple ;: banana   :: cake
+data  ;; exchange :; format
+
+apple ;: banana::cake
+data  ;; exchange:;format
+
+apple ; :banana::cake
+data  ;  ; exchange: ; format
+
+apple ; :banana::cake
+data  ; ;exchange:;format
+
+apple ; :banana::cake
+data  ; ;exchange:;format
+
+apple;:banana::cake
+data;;exchange:;format
+
+apple;:         banana: : cake
+data;;exchange: ;format
+
+apple;:banana: :cake
+data;;exchange:;format
+
+apple;:banana: :cake
+data;;exchange:;format
+
+apple;:         banana: : cake
+data;;exchange: ;format
+
+apple;:banana:: cake
+data;;exchange: ;format
+
+apple;:         banana: : cake
+data;;exchange: ;format
+
+apple;:         banana::cake
+data;;exchange: ;format
+
+```ruby
+apple = 1                # comment not aligned
+apricot = 'DAD' + 'F#AD'
+banana = 'Gros Michel'   # comment 2
+```
+

test/regexp.md

@@ -0,0 +1,12 @@
+" :source run.vim
+" @a
+
+apple;:banana::cake
+data;;exchange:;format
+
+```ruby
+apple = 1 # comment not aligned
+apricot = 'DAD' + 'F#AD'
+banana = 'Gros Michel' # comment 2
+```
+

test/regexp.script

@@ -0,0 +1 @@
+4Gvipjyvip:EasyAlign:

test/run.vim

@@ -0,0 +1,13 @@
+e!
+execute 'source '. expand('%:p:h') . '/include.vim'
+
+while line('.') < line('$')
+  normal 30j
+  redraw
+endwhile
+
+normal gg
+let @b=system('cat '. expand('%:p:r') . '.script')
+let @a='@b:vert diffsplit ' . expand('%:p:r') . '.expected
+'
+" Syntax highlighting doesn't work