feat(emacs): Snippets loading and writing setup

tools/emacs.d/lisp/init-latex.el

@@ -7,5 +7,26 @@
     (kbd "zL") #'texfrag-document)
   :hook (markdown-mode . texfrag-mode))
 
+(use-package laas
+  :hook (
+	 (LaTeX-mode . laas-mode)
+	 (org-mode . laas-mode))
+  :config ; do whatever here
+  (aas-set-snippets 'laas-mode
+                    ;; set condition!
+                    :cond #'texmathp ; expand only while in math
+		    "nabl" "\\nabla"
+		    "ppart" (lambda () (interactive)
+			      (yas-expand-snippet "\\frac{\\partial $2}{\\partial $1} $0"))
+                    ;; bind to functions!
+                    "Sum" (lambda () (interactive)
+                            (yas-expand-snippet "\\sum_{$1}^{$2} $0"))
+                    "Span" (lambda () (interactive)
+                             (yas-expand-snippet "\\Span($1)$0"))
+                    ;; add accent snippets
+                    :cond #'laas-object-on-left-condition
+                    "qq" (lambda () (interactive) (laas-wrap-previous-object "sqrt")))
+  )
+
 (provide 'init-latex)
 ;;; init-latex.el ends