Update

lisp/init-snippet.el

@@ -16,6 +16,8 @@
                 :test 'equal))
 
   (setq yas-triggers-in-field t)
+
+  ;; Snippets trigger inside a word
   (setq yas-key-syntaxes (list #'yas-longest-key-from-whitespace "w_.()" "w_." "w_" "w"))
   
   ;; Function that tries to autoexpand YaSnippets

snippets/latex-mode/begin.yasnippet

@@ -1,10 +0,0 @@
-# -*- mode: snippet -*-
-# contributor: Mads D. Kristensen <madsdk@gmail.com>
-# contributor : Bjorn Reese <breese@users.sourceforge.net>
-# key: begin
-# group: environments
-# name: \begin{environment} ... \end{environment}
-# --
-\begin{${1:$$(yas/choose-value (mapcar 'car (LaTeX-environment-list)))}}
-$0
-\end{$1}