Ændrede diverse ting, især tilføjede jeg en masse lua-snippets

luasnippets/tex/environments.lua

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+-- Abbreviations used in this article and the LuaSnip docs
+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
+--
+-- AutoSnippet function "as":
+local function as(trigger, nodes, opts)
+  opts = opts or {}
+  -- Add snippetType = "autosnippet" to the first parameter
+  if type(trigger) == "table" then
+    trigger.snippetType = "autosnippet"
+  else
+    trigger = { trig = trigger, snippetType = "autosnippet" }
+  end
+  return s(trigger, nodes, opts)
+end
+
+return {
+  as(
+    "eq",
+    fmta(
+      [[
+        \[
+          <>
+        \] 
+      ]],
+      { i(1) }
+    ),
+    { condition = line_begin }
+  ),
+
+  as(
+    "\\[",
+    fmta(
+      [[
+        \[
+          <>
+        \] 
+      ]],
+      { i(1) }
+    ),
+    { condition = line_begin }
+  ),
+
+  as(
+    "beg",
+    fmta(
+      [[
+        \begin{<>}
+          <>
+        \end{<>}
+      ]],
+      { i(1), i(2), rep(1) }
+    ),
+    { condition = line_begin }
+  ),
+
+  as(
+    "als",
+    fmta(
+      [[
+    \begin{align*}
+      <>
+    \end{align*}
+  ]],
+      { i(1) }
+    ),
+    { condition = line_begin }
+  ),
+
+  as(
+    "ali",
+    fmta(
+      [[
+    \begin{align}
+      <>
+    \end{align}
+  ]],
+      { i(1) }
+    ),
+    { condition = line_begin }
+  ),
+}