286 lines
12 KiB
Text
286 lines
12 KiB
Text
*snipMate.txt* Plugin for using TextMate-style snippets in Vim.
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snipMate *snippet* *snippets* *snipMate*
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Last Change: July 13, 2009
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|snipMate-description| Description
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|snipMate-syntax| Snippet syntax
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|snipMate-usage| Usage
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|snipMate-settings| Settings
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|snipMate-features| Features
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|snipMate-disadvantages| Disadvantages to TextMate
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|snipMate-contact| Contact
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For Vim version 7.0 or later.
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This plugin only works if 'compatible' is not set.
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{Vi does not have any of these features.}
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==============================================================================
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DESCRIPTION *snipMate-description*
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snipMate.vim implements some of TextMate's snippets features in Vim. A
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snippet is a piece of often-typed text that you can insert into your
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document using a trigger word followed by a <tab>.
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For instance, in a C file using the default installation of snipMate.vim, if
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you type "for<tab>" in insert mode, it will expand a typical for loop in C: >
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for (i = 0; i < count; i++) {
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}
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To go to the next item in the loop, simply <tab> over to it; if there is
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repeated code, such as the "i" variable in this example, you can simply
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start typing once it's highlighted and all the matches specified in the
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snippet will be updated. To go in reverse, use <shift-tab>.
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==============================================================================
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SYNTAX *snippet-syntax*
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Snippets can be defined in two ways. They can be in their own file, named
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after their trigger in 'snippets/<filetype>/<trigger>.snippet', or they can be
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defined together in a 'snippets/<filetype>.snippets' file. Note that dotted
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'filetype' syntax is supported -- e.g., you can use >
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:set ft=html.eruby
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to activate snippets for both HTML and eRuby for the current file.
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The syntax for snippets in *.snippets files is the following: >
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snippet trigger
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expanded text
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more expanded text
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Note that the first hard tab after the snippet trigger is required, and not
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expanded in the actual snippet. The syntax for *.snippet files is the same,
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only without the trigger declaration and starting indentation.
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Also note that snippets must be defined using hard tabs. They can be expanded
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to spaces later if desired (see |snipMate-indenting|).
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"#" is used as a line-comment character in *.snippets files; however, they can
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only be used outside of a snippet declaration. E.g.: >
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# this is a correct comment
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snippet trigger
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expanded text
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snippet another_trigger
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# this isn't a comment!
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expanded text
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<
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This should hopefully be obvious with the included syntax highlighting.
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*snipMate-${#}*
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Tab stops ~
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By default, the cursor is placed at the end of a snippet. To specify where the
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cursor is to be placed next, use "${#}", where the # is the number of the tab
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stop. E.g., to place the cursor first on the id of a <div> tag, and then allow
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the user to press <tab> to go to the middle of it:
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>
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snippet div
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<div id="${1}">
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${2}
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</div>
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<
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*snipMate-placeholders* *snipMate-${#:}* *snipMate-$#*
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Placeholders ~
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Placeholder text can be supplied using "${#:text}", where # is the number of
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the tab stop. This text then can be copied throughout the snippet using "$#",
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given # is the same number as used before. So, to make a C for loop: >
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snippet for
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for (${2:i}; $2 < ${1:count}; $1++) {
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${4}
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}
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This will cause "count" to first be selected and change if the user starts
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typing. When <tab> is pressed, the "i" in ${2}'s position will be selected;
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all $2 variables will default to "i" and automatically be updated if the user
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starts typing.
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NOTE: "$#" syntax is used only for variables, not for tab stops as in TextMate.
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Variables within variables are also possible. For instance: >
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snippet opt
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<option value="${1:option}">${2:$1}</option>
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Will, as usual, cause "option" to first be selected and update all the $1
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variables if the user starts typing. Since one of these variables is inside of
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${2}, this text will then be used as a placeholder for the next tab stop,
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allowing the user to change it if he wishes.
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To copy a value throughout a snippet without supplying default text, simply
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use the "${#:}" construct without the text; e.g.: >
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snippet foo
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${1:}bar$1
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< *snipMate-commands*
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Interpolated Vim Script ~
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Snippets can also contain Vim script commands that are executed (via |eval()|)
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when the snippet is inserted. Commands are given inside backticks (`...`); for
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TextMates's functionality, use the |system()| function. E.g.: >
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snippet date
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`system("date +%Y-%m-%d")`
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will insert the current date, assuming you are on a Unix system. Note that you
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can also (and should) use |strftime()| for this example.
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Filename([{expr}] [, {defaultText}]) *snipMate-filename* *Filename()*
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Since the current filename is used often in snippets, a default function
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has been defined for it in snipMate.vim, appropriately called Filename().
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With no arguments, the default filename without an extension is returned;
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the first argument specifies what to place before or after the filename,
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and the second argument supplies the default text to be used if the file
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has not been named. "$1" in the first argument is replaced with the filename;
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if you only want the filename to be returned, the first argument can be left
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blank. Examples: >
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snippet filename
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`Filename()`
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snippet filename_with_default
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`Filename('', 'name')`
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snippet filename_foo
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`filename('$1_foo')`
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The first example returns the filename if it the file has been named, and an
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empty string if it hasn't. The second returns the filename if it's been named,
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and "name" if it hasn't. The third returns the filename followed by "_foo" if
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it has been named, and an empty string if it hasn't.
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*multi_snip*
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To specify that a snippet can have multiple matches in a *.snippets file, use
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this syntax: >
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snippet trigger A description of snippet #1
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expand this text
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snippet trigger A description of snippet #2
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expand THIS text!
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In this example, when "trigger<tab>" is typed, a numbered menu containing all
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of the descriptions of the "trigger" will be shown; when the user presses the
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corresponding number, that snippet will then be expanded.
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To create a snippet with multiple matches using *.snippet files,
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simply place all the snippets in a subdirectory with the trigger name:
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'snippets/<filetype>/<trigger>/<name>.snippet'.
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==============================================================================
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USAGE *snipMate-usage*
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*'snippets'* *g:snippets_dir*
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Snippets are by default looked for any 'snippets' directory in your
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'runtimepath'. Typically, it is located at '~/.vim/snippets/' on *nix or
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'$HOME\vimfiles\snippets\' on Windows. To change that location or add another
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one, change the g:snippets_dir variable in your |.vimrc| to your preferred
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directory, or use the |ExtractSnips()|function. This will be used by the
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|globpath()| function, and so accepts the same syntax as it (e.g.,
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comma-separated paths).
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ExtractSnipsFile({directory}, {filetype}) *ExtractSnipsFile()* *.snippets*
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ExtractSnipsFile() extracts the specified *.snippets file for the given
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filetype. A .snippets file contains multiple snippet declarations for the
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filetype. It is further explained above, in |snippet-syntax|.
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ExtractSnips({directory}, {filetype}) *ExtractSnips()* *.snippet*
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ExtractSnips() extracts *.snippet files from the specified directory and
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defines them as snippets for the given filetype. The directory tree should
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look like this: 'snippets/<filetype>/<trigger>.snippet'. If the snippet has
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multiple matches, it should look like this:
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'snippets/<filetype>/<trigger>/<name>.snippet' (see |multi_snip|).
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*ResetSnippets()*
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The ResetSnippets() function removes all snippets from memory. This is useful
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to put at the top of a snippet setup file for if you would like to |:source|
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it multiple times.
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*list-snippets* *i_CTRL-R_<Tab>*
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If you would like to see what snippets are available, simply type <c-r><tab>
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in the current buffer to show a list via |popupmenu-completion|.
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==============================================================================
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SETTINGS *snipMate-settings* *g:snips_author*
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The g:snips_author string (similar to $TM_FULLNAME in TextMate) should be set
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to your name; it can then be used in snippets to automatically add it. E.g.: >
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let g:snips_author = 'Hubert Farnsworth'
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snippet name
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`g:snips_author`
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<
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*snipMate-expandtab* *snipMate-indenting*
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If you would like your snippets to be expanded using spaces instead of tabs,
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just enable 'expandtab' and set 'softtabstop' to your preferred amount of
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spaces. If 'softtabstop' is not set, 'shiftwidth' is used instead.
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*snipMate-remap*
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snipMate does not come with a setting to customize the trigger key, but you
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can remap it easily in the two lines it's defined in the 'after' directory
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under 'plugin/snipMate.vim'. For instance, to change the trigger key
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to CTRL-J, just change this: >
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ino <tab> <c-r>=TriggerSnippet()<cr>
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snor <tab> <esc>i<right><c-r>=TriggerSnippet()<cr>
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to this: >
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ino <c-j> <c-r>=TriggerSnippet()<cr>
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snor <c-j> <esc>i<right><c-r>=TriggerSnippet()<cr>
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==============================================================================
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FEATURES *snipMate-features*
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snipMate.vim has the following features among others:
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- The syntax of snippets is very similar to TextMate's, allowing
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easy conversion.
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- The position of the snippet is kept transparently (i.e. it does not use
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markers/placeholders written to the buffer), which allows you to escape
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out of an incomplete snippet, something particularly useful in Vim.
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- Variables in snippets are updated as-you-type.
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- Snippets can have multiple matches.
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- Snippets can be out of order. For instance, in a do...while loop, the
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condition can be added before the code.
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- [New] File-based snippets are supported.
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- [New] Triggers after non-word delimiters are expanded, e.g. "foo"
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in "bar.foo".
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- [New] <shift-tab> can now be used to jump tab stops in reverse order.
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==============================================================================
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DISADVANTAGES *snipMate-disadvantages*
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snipMate.vim currently has the following disadvantages to TextMate's snippets:
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- There is no $0; the order of tab stops must be explicitly stated.
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- Placeholders within placeholders are not possible. E.g.: >
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'<div${1: id="${2:some_id}}">${3}</div>'
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<
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In TextMate this would first highlight ' id="some_id"', and if
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you hit delete it would automatically skip ${2} and go to ${3}
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on the next <tab>, but if you didn't delete it it would highlight
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"some_id" first. You cannot do this in snipMate.vim.
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- Regex cannot be performed on variables, such as "${1/.*/\U&}"
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- Placeholders cannot span multiple lines.
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- Activating snippets in different scopes of the same file is
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not possible.
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Perhaps some of these features will be added in a later release.
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==============================================================================
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CONTACT *snipMate-contact* *snipMate-author*
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To contact the author (Michael Sanders), please email:
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msanders42+snipmate <at> gmail <dot> com
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I greatly appreciate any suggestions or improvements offered for the script.
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==============================================================================
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vim:tw=78:ts=8:ft=help:norl:
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