Update

LuaSnip/markdown/derivative.lua

@@ -0,0 +1,38 @@
+local ls = require("luasnip")
+local s = ls.snippet
+local sn = ls.snippet_node
+local t = ls.text_node
+local i = ls.insert_node
+local f = ls.function_node
+local d = ls.dynamic_node
+local fmt = require("luasnip.extras.fmt").fmt
+local fmta = require("luasnip.extras.fmt").fmta
+local rep = require("luasnip.extras").rep
+local line_begin = require("luasnip.extras.expand_conditions").line_begin
+
+local tex = require("util.latex")
+
+local get_visual = function(args, parent)
+  if #parent.snippet.env.SELECT_RAW > 0 then
+    return sn(nil, t(parent.snippet.env.SELECT_RAW))
+  else -- If SELECT_RAW is empty, return a blank insert node
+    return sn(nil, i(1))
+  end
+end
+
+return {
+  s(
+    { trig = "pv", snippetType = "autosnippet" },
+    c(1, {
+      sn(nil, { t("\\frac{\\partial "), i(1), t("}{\\partial "), i(2), t("}") }),
+    }),
+    { condition = tex.in_mathzone }
+  ),
+  s(
+    { trig = "ov", snippetType = "autosnippet" },
+    c(1, {
+      sn(nil, { t("\\frac{\\d "), i(1), t("}{\\d "), i(2), t("}") }),
+    }),
+    { condition = tex.in_mathzone }
+  ),
+}