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Further improvements in the snippet syntax chapter

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cpfaff 2013-04-10 23:03:15 +02:00
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doc/neosnippet.txt
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@ -374,8 +374,8 @@ EXAMPLES *neosnippet-examples*
============================================================================== ==============================================================================
SNIPPET SYNTAX *neosnippet-snippet-syntax* SNIPPET SYNTAX *neosnippet-snippet-syntax*
It is quite easy to create your own snippets starting with the example below. It is quite easy to create your own snippets. Your can use the example below to
The snippet syntax is close to the one of |snipMate|. get started.
Example: Example:
@ -390,22 +390,25 @@ Example:
endif endif
< <
The snippet syntax is close to the one of |snipMate|. Each snippet starts with
some keywords that define the name and modify the expansion and treatment of the
snippet.
Snippet Keywords: Snippet Keywords:
- snippet [name] (Required) - snippet [name] (Required)
Each snippet starts with the keyword "snippet". This keyword is directly Each snippet starts with the keyword "snippet". This keyword is directly
followed by the snippet name. The snippet name is used for the expansion of followed by the snippet name. The snippet name is used to expand the snippet.
the snippet.
- abbr [name] (Optional) - abbr [name] (Optional)
You can define an abbreviation for the snippet. It will be displayed in You can define an abbreviation for the snippet name. It will be displayed in
the drop down selection menu of neocomplcache. the drop down selection menu of the neocomplcache plugin.
- alias [aliases] (Optional) - alias [aliases] (Optional)
Alias names can be use as additional keywords to expand a snippet. You can Alias names can be use as additional keywords to expand the snippet. You can
define multiple aliases using either spaces ' ' or commas ',' as separator. define multiple aliases using either spaces ' ' or commas ',' as separator.
Example Example
@ -430,8 +433,8 @@ Snippet Keywords:
Options influence the snippet behavior. The possible values are: Options influence the snippet behavior. The possible values are:
+ word This snippet expands by a word boundary. Note: To complete + word This snippet expands by a word boundary. Note: To complete
the trigger in snippets_complete, it must be a word character the trigger with snippets_complete, it must be a word character
(digits, an alphabetical characters or "_"). (digits, alphabetical characters or "_").
> >
snippet date snippet date
@ -439,7 +442,7 @@ Snippet Keywords:
`strftime("%d %b %Y")` `strftime("%d %b %Y")`
< <
+ head This snippet expands on the beginning of a line only. + head This snippet expands at the beginning of a line only.
Note: This is the same as "prev_word '^'" which is still Note: This is the same as "prev_word '^'" which is still
there for backwards compatibility. there for backwards compatibility.
@ -455,21 +458,21 @@ Snippet Keywords:
to the indent of the line above the snippet after expansion. to the indent of the line above the snippet after expansion.
The snippet itself starts below the part that contains the options, snippet The snippet itself starts below the part that contains the options, snippet
aliases and kekywords, described above. It contains the snippet which gets aliases and keywords, described above. It contains the snippet which gets
expanded and can contain several place holders. The placeholders are used as expanded which can contain several placeholders. The placeholders are used as
jump points inside the snippet. There are several placeholder available and they jump points while expanding the snippet. There are several placeholders available
provide diffrent functionality. providing different functionality.
The structure of a placeholder can be: The structure of a placeholder can be:
- ${number:placeholder text} - ${number:placeholder text}
The number of a placeholder and the placeholder text are separated The placeholder starts with a dollar sign "$". The number of a placeholder
by a ":". They are embraced by a pair of curly braces "{}". The and the placeholder text are separated by a colon ":". They are surrounded
placeholder text is displayed after the snippet expansion and will be by a pair of curly braces "{}". The placeholder text is displayed after
replaced by your text. If you jump over the snippet and do not insert the snippet expansion and will be replaced by your text. If you jump over
any text in that position the placeholder text remains there. This can the snippet and do not insert any text in that placeholder position the text
be used as a default value for a certain position. remains there. This can be used as a default value for a certain position.
Example Example
@ -482,7 +485,7 @@ The structure of a placeholder can be:
- ${number:#:placeholder text} - ${number:#:placeholder text}
In this type of placeholder the number is followed by the "#" character. In this kind of placeholder the number is followed by the hash character "#".
If you jump over this placeholder and do not insert any text, the placeholder If you jump over this placeholder and do not insert any text, the placeholder
text will be removed. text will be removed.
@ -498,8 +501,8 @@ The structure of a placeholder can be:
- ${number:TARGET} - ${number:TARGET}
This is the target placeholder which is replaced by text from a visual This is the target placeholder which is replaced by text from a visual
selection. Note: You need to expand your snippet with the key mapping below selection. Note: You need to make a visual selection and expand your
for this to work. snippet with the key mapping below for this to work.
|<Plug>(neosnippet_expand_target)|. |<Plug>(neosnippet_expand_target)|.
@ -519,7 +522,7 @@ The structure of a placeholder can be:
This is a placeholder which you can use as a simple jump position. This can be This is a placeholder which you can use as a simple jump position. This can be
useful if you edit a placeholder inside of some sort of brackets or environment useful if you edit a placeholder inside of some sort of brackets or environment
and after that want to go on behind that. and want to go on behind it after that.
Example Example
@ -535,7 +538,7 @@ The structure of a placeholder can be:
- $number - $number
This is a synchronized placeholder. Sometimes it is required to repeat a value This is a synchronized placeholder. Sometimes it is required to repeat a value
in several places inside a snippet. If you set the number of this placeholder in several positions inside a snippet. If you set the number of this placeholder
to the same number as one of the other placeholders in the snippet, it will to the same number as one of the other placeholders in the snippet, it will
repeat its content. $1 is synchronized to ${1} and so on. $0 will be the final repeat its content. $1 is synchronized to ${1} and so on. $0 will be the final
jump placeholder. jump placeholder.
@ -567,7 +570,7 @@ The structure of a placeholder can be:
end end
< <
A placeholder value can not contain new lines. The snippet below isn't valid. A placeholder value can not contain new lines. The snippet below is not valid.
> >
snippet invalid snippet invalid
@ -576,9 +579,9 @@ The structure of a placeholder can be:
< <
Vim has a built-in expression evaluation. You can also use this feature inside Vim has a built-in expression evaluation. You can also use this feature inside
of snippets if you use back ticks like in the example below where "%:t" gets of snippets if you use back ticks like in the example below. Here the "%:t"
expanded to the name of the current active file and the current time gets gets expanded to the name of the current active file and the current time gets
inserted by the expansion of the strftime command. inserted by expanding the output of the strftime command.
> >
snippet header snippet header
@ -586,14 +589,15 @@ inserted by the expansion of the strftime command.
${2:Created at: `strftime("%B %d, %Y")`} ${2:Created at: `strftime("%B %d, %Y")`}
< <
You can also nest the placeholders if you escape the special characters. You can also nest placeholders if you escape the special characters.
> >
snippet div snippet div
<div ${1:id="${2:someid\}"}>${3}</div>${4} <div ${1:id="${2:someid\}"}>${3}</div>${4}
< <
In some cases you need to escape the "}" twice as the example below shows. In some cases you need to escape the curly brace "}" twice as shown in the
example below.
> >
snippet catch snippet catch