emacs.d/snippets/latex-mode/matrix.yasnippet

# -*- mode: snippet -*-
# contributor: Song Qiang <tsiangsung@gmail.com>
# key: matrix
# group: math
# name: \begin{matrix} ... \end{}
# --
\begin{${1:$$(yas/choose-value '("pmatrix" "bmatrix" "Bmatrix" "vmatrix" "Vmatrix" "smallmatrix"))}}
\label{${2:"waiting for reftex-label call..."$(unless yas/modified-p (reftex-label nil 'dont-insert))}}
$0
\end{$1}