yasnippet.org

ya-snippet.org

Table of Contents

• yasnippet on the Github
• Writing snippets
  • Template syntax
    • Plain Text
    • Embedded Emacs-lisp code
    • Tab step fields
    • Placeholder fields
    • Mirrors

yasnippet on the Github

https://github.com/capitaomorte/yasnippet

Writing snippets

Template syntax

Plain Text

Arbitrary text can be included as the content of a template. They are usually interpreted as plain text, except $ and `. You need to use \ to escape them: \$ and \`. The \ itself may also needed to be escaped as \\ sometimes.

Embedded Emacs-lisp code

Emacs-Lisp code can be embedded inside the template, written inside back-quotes (`). The lisp forms are evaluated when the snippet is being expanded. The evaluation is done in the same buffer as the snippet being expanded.

Here's an example for c-mode to calculate the header file guard dynamically:

#ifndef ${1:_`(upcase (file-name-nondirectory (file-name-sans-extension (buffer-file-name))))`_H_}
#define $1

$0

#endif /* $1 */

Tab step fields

Placeholder fields

Mirrors

We refer the tab stops with placeholders as a field. A field can have mirrors. Its mirrors will get updated when you change the text of a field.

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Post by: Jalen Wang (转载请注明出处)