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-rw-r--r--modules/by-name/nv/nvim/plgs/luasnip/default.nix86
-rw-r--r--modules/by-name/nv/nvim/plgs/luasnip/lua/luasnip.lua7
-rw-r--r--modules/by-name/nv/nvim/plgs/luasnip/lua/snippets/all.lua211
-rw-r--r--modules/by-name/nv/nvim/plgs/luasnip/lua/snippets/html/html.lua102
-rw-r--r--modules/by-name/nv/nvim/plgs/luasnip/lua/snippets/tex/delimiter.lua28
-rw-r--r--modules/by-name/nv/nvim/plgs/luasnip/lua/snippets/tex/greek.lua37
-rw-r--r--modules/by-name/nv/nvim/plgs/luasnip/snippets/all.lua338
-rw-r--r--modules/by-name/nv/nvim/plgs/luasnip/snippets/tex/delimiter.lua41
-rw-r--r--modules/by-name/nv/nvim/plgs/luasnip/snippets/tex/greek.lua49
9 files changed, 509 insertions, 390 deletions
diff --git a/modules/by-name/nv/nvim/plgs/luasnip/default.nix b/modules/by-name/nv/nvim/plgs/luasnip/default.nix
index f67c9899..222b5070 100644
--- a/modules/by-name/nv/nvim/plgs/luasnip/default.nix
+++ b/modules/by-name/nv/nvim/plgs/luasnip/default.nix
@@ -1,3 +1,12 @@
+# nixos-config - My current NixOS configuration
+#
+# Copyright (C) 2025 Benedikt Peetz <benedikt.peetz@b-peetz.de>
+# SPDX-License-Identifier: GPL-3.0-or-later
+#
+# This file is part of my nixos-config.
+#
+# You should have received a copy of the License along with this program.
+# If not, see <https://www.gnu.org/licenses/gpl-3.0.txt>.
 {
   lib,
   config,
@@ -7,14 +16,81 @@
   cfg = config.soispha.programs.nvim;
 in {
   home-manager.users.soispha.programs.nixvim = lib.mkIf cfg.enable {
+    keymaps = [
+      {
+        key = "<C-K>";
+        mode = ["i"];
+        action.__raw = ''
+          function()
+            require('luasnip').expand()
+          end
+        '';
+        options = {
+          # silent = true;
+          desc = "Expand the snippet";
+        };
+      }
+      {
+        key = "<C-L>";
+        mode = ["i" "s"];
+        action.__raw = ''
+          function()
+            require('luasnip').jump(1)
+          end
+        '';
+        options = {
+          # silent = true;
+          desc = "Jump forward in snippet insert nodes";
+        };
+      }
+      {
+        key = "<C-J>";
+        mode = ["i" "s"];
+        action.__raw = ''
+          function()
+            require('luasnip').jump(-1)
+          end
+        '';
+        options = {
+          # silent = true;
+          desc = "Jump backwards in snippet insert nodes";
+        };
+      }
+      {
+        key = "<C-E>";
+        mode = ["i" "s"];
+        action.__raw = ''
+          function()
+            if require('luasnip').choice_active() then
+              require('luasnip').change_choice(1)
+            end
+          end
+        '';
+        options = {
+          # silent = true;
+          desc = "Cycle through the snippets choice nodes";
+        };
+      }
+    ];
     plugins.luasnip = {
       enable = true;
+
+      settings = {
+        # Enable auto triggered snippets.
+        enable_autosnippets = true;
+
+        # Use Tab to trigger visual selection.
+        store_selection_keys = "<Tab>";
+      };
+
+      fromLua = [
+        {
+          paths = ./snippets;
+          lazyLoad = true;
+        }
+      ];
     };
-    extraConfigLuaPost = ''
-      ${lib.strings.fileContents ./lua/luasnip.lua};
-      require("luasnip.loaders.from_lua").load({paths = "${./lua/snippets}"});
-      require("luasnip.loaders.from_lua").lazy_load({paths = "${./lua/snippets}"});
-    '';
+
     extraPlugins = [
       # needed for the todo-comments snippets
       pkgs.vimPlugins.comment-nvim
diff --git a/modules/by-name/nv/nvim/plgs/luasnip/lua/luasnip.lua b/modules/by-name/nv/nvim/plgs/luasnip/lua/luasnip.lua
deleted file mode 100644
index a05fa57f..00000000
--- a/modules/by-name/nv/nvim/plgs/luasnip/lua/luasnip.lua
+++ /dev/null
@@ -1,7 +0,0 @@
-require("luasnip").config.set_config({
-  -- Enable auto triggered snippets
-  enable_autosnippets = true,
-
-  -- Use Tab (or some other key if you prefer) to trigger visual selection
-  store_selection_keys = "<Tab>",
-})
diff --git a/modules/by-name/nv/nvim/plgs/luasnip/lua/snippets/all.lua b/modules/by-name/nv/nvim/plgs/luasnip/lua/snippets/all.lua
deleted file mode 100644
index 2b923f20..00000000
--- a/modules/by-name/nv/nvim/plgs/luasnip/lua/snippets/all.lua
+++ /dev/null
@@ -1,211 +0,0 @@
-local ls = require("luasnip")
--- auto_pairs  {{{
-local get_visual = function(args, parent)
-  if #parent.snippet.env.SELECT_RAW > 0 then
-    return sn(nil, i(1, parent.snippet.env.SELECT_RAW))
-  else
-    return sn(nil, i(1, ""))
-  end
-end
-local function char_count_same(c1, c2)
-  local line = vim.api.nvim_get_current_line()
-  -- '%'-escape chars to force explicit match (gsub accepts patterns).
-  -- second return value is number of substitutions.
-  local _, ct1 = string.gsub(line, "%" .. c1, "")
-  local _, ct2 = string.gsub(line, "%" .. c2, "")
-  return ct1 == ct2
-end
-
-local function even_count(c, ...)
-  local line = vim.api.nvim_get_current_line()
-  local _, ct = string.gsub(line, c, "")
-  return ct % 2 == 0
-end
-
--- This makes creation of pair-type snippets easier.
-local function pair(pair_begin, pair_end, file_types, condition_function)
-  -- FIXME(@Soispha): This only works if file_types == nil, otherwise the snippet does not expand.
-  -- It would be nice, if it would support both an empty array (`{}`) and nil <2023-08-27>
-  -- file_types = file_types or {};
-
-  return s(
-    { trig = pair_begin, wordTrig = false, snippetType = "autosnippet" },
-    { t({ pair_begin }), d(1, get_visual), t({ pair_end }) },
-    {
-      condition = function()
-        local filetype_check = true
-        if file_types ~= nil then filetype_check = file_types[vim.bo.filetype] or false end
-        return (not condition_function(pair_begin, pair_end)) and filetype_check
-      end,
-    }
-  )
-end
-
-local auto_pairs = {
-  pair("(", ")", nil, char_count_same),
-  pair("{", "}", nil, char_count_same),
-  pair("[", "]", nil, char_count_same),
-  pair("<", ">", { ["rust"] = true, ["tex"] = true }, char_count_same),
-  pair("'", "'", nil, even_count),
-  pair("\"", "\"", nil, even_count),
-  pair("`", "`", nil, even_count),
-}
-
-ls.add_snippets("all", auto_pairs, { type = "snippets", key = "auto_pairs" })
--- }}}
-
--- todo_comments {{{
-local calculate_comment_string = require("Comment.ft").calculate
-local utils = require("Comment.utils")
-
-local read_git_config = function(config_value)
-  local command = string.format("git config \"%s\"", config_value)
-  local handle = io.popen(command)
-  if handle == nil then return error(string.format("Failed to call `%s`.", command)) end
-  local result = handle:read("*a")
-  handle:close()
-  -- stripped = string.gsub(str, '%s+', '')
-  return string.gsub(result, "\n", "")
-end
-
-local name_to_handle = function(name)
-  -- from: https://stackoverflow.com/a/7615129
-  local split = function(inputstr, sep)
-    local t = {}
-    for str in string.gmatch(inputstr, "([^" .. sep .. "]+)") do
-      table.insert(t, str)
-    end
-    return t
-  end
-
-  local parts = split(name, "%s")
-
-  local output_name = ""
-  if #parts > 2 then
-    for _, val in ipairs(parts) do
-      output_name = string.format("%s%s", output_name, val:sub(1, 1))
-    end
-  elseif #parts == 2 then
-    output_name = string.format("%s%s", parts[1]:sub(1, 1), parts[2])
-  elseif #parts == 1 then
-    output_name = parts[1]
-  else
-    -- parts is 0
-    output_name = "<NoName>"
-  end
-  return string.format("@%s", output_name:lower())
-end
-
-_G.luasnip = {}
-_G.luasnip.vars = {
-  username = function() return name_to_handle(read_git_config("user.name")) end,
-  email = function() return read_git_config("user.email") end,
-}
-
---- Get the comment string {beg,end} table
----@param ctype integer 1 for `line`-comment and 2 for `block`-comment
----@return table comment_strings {begcstring, endcstring}
-local get_cstring = function(ctype)
-  -- use the `Comments.nvim` API to fetch the comment string for the region (eq. '--%s' or '--[[%s]]' for `lua`)
-  local cstring = calculate_comment_string({ ctype = ctype, range = utils.get_region() }) or vim.bo.commentstring
-  -- as we want only the strings themselves and not strings ready for using `format` we want to split the left and right side
-  local left, right = utils.unwrap_cstr(cstring)
-  -- create a `{left, right}` table for it
-  return { left, right }
-end
-
---- Options for marks to be used in a TODO comment
----@return table,table: The first table contains a node for the date, the second for the signature
-local marks = {
-  signature = function() return t("(" .. _G.luasnip.vars:username() .. ")"), t("") end,
-  date_signature = function() return t("<" .. os.date("%Y-%m-%d") .. ">"), t("(" .. _G.luasnip.vars:username() .. ")") end,
-  date = function() return t("<" .. os.date("%Y-%m-%d") .. ">"), t("") end,
-  empty = function() return t(""), t("") end,
-}
-
----@param alias string
----@param opts table
----@param mark_function function: This function should return two nodes
----@return table: Returns the comment node
-local todo_snippet_nodes = function(alias, opts, mark_function)
-  local date_node, signature_node = mark_function()
-  -- format them into the actual snippet
-  local comment_node = fmta("<> <><>: <> <> <>", {
-    f(function()
-      return get_cstring(opts.ctype)[1] -- get <comment-string[1]>
-    end),
-    t(alias), -- [name-of-comment]
-    signature_node,
-    i(0), -- {comment-text}
-    date_node,
-    f(function()
-      return get_cstring(opts.ctype)[2] -- get <comment-string[2]>
-    end),
-  })
-  return comment_node
-end
-
---- Generate a TODO comment snippet with an automatic description and docstring
----@param context table merged with the generated context table `trig` must be specified
----@param alias string of aliases for the todo comment (ex.: {FIX, ISSUE, FIXIT, BUG})
----@param opts table merged with the snippet opts table
----@param mark_function function: The function used to get the marks
-local todo_snippet = function(context, alias, opts, mark_function)
-  opts = opts or {}
-  context = context or {}
-  if not context.trig then
-    return error("context doesn't include a `trig` key which is mandatory", 2) -- all we need from the context is the trigger
-  end
-  opts.ctype = opts.ctype or 1 -- comment type can be passed in the `opts` table, but if it is not, we have to ensure, it is defined
-  local alias_string = alias -- `choice_node` documentation
-  context.name = context.name or (alias_string .. " comment") -- generate the `name` of the snippet if not defined
-  context.dscr = context.dscr or (alias_string .. " comment with a signature-mark") -- generate the `dscr` if not defined
-  context.docstring = context.docstring or (" {1:" .. alias_string .. "}: {3} <{2:mark}>{0} ") -- generate the `docstring` if not defined
-  local comment_node = todo_snippet_nodes(alias, opts, mark_function)
-  return s(context, comment_node, opts) -- the final todo-snippet constructed from our parameters
-end
-
----@param context table: The luasnip context
----@param opts table: The luasnip opts table, needs to have a ctype set
----@param aliases string: All aliases for a name
----@param marks table: Possible marks to account in snipped generation
----@return table: All possible snippets build from the marks
-local process_marks = function(context, aliases, opts, marks)
-  local output = {}
-  for mark_name, mark_function in pairs(marks) do
-    local contex_trig_local = context.trig
-    context.trig = context.trig .. "-" .. mark_name
-    output[#output + 1] = todo_snippet(context, aliases, opts, mark_function)
-    context.trig = contex_trig_local
-  end
-  return output
-end
-
-local todo_snippet_specs = {
-  { { trig = "todo" }, { "TODO" }, { ctype = 1 } },
-  { { trig = "fix" }, { "FIXME", "ISSUE" }, { ctype = 1 } },
-  { { trig = "hack" }, { "HACK" }, { ctype = 1 } },
-  { { trig = "warn" }, { "WARNING" }, { ctype = 1 } },
-  { { trig = "perf" }, { "PERFORMANCE", "OPTIMIZE" }, { ctype = 1 } },
-  { { trig = "note" }, { "NOTE", "INFO" }, { ctype = 1 } },
-
-  -- NOTE: Block commented todo-comments
-  { { trig = "todob" }, { "TODO" }, { ctype = 2 } },
-  { { trig = "fixb" }, { "FIXME", "ISSUE" }, { ctype = 2 } },
-  { { trig = "hackb" }, { "HACK" }, { ctype = 2 } },
-  { { trig = "warnb" }, { "WARNING" }, { ctype = 2 } },
-  { { trig = "perfb" }, { "PERF", "PERFORMANCE", "OPTIM", "OPTIMIZE" }, { ctype = 2 } },
-  { { trig = "noteb" }, { "NOTE", "INFO" }, { ctype = 2 } },
-}
-
-local todo_comment_snippets = {}
-for _, v in ipairs(todo_snippet_specs) do
-  local snippets = process_marks(v[1], v[2][1], v[3], marks)
-  for _, value in pairs(snippets) do
-    table.insert(todo_comment_snippets, value)
-  end
-end
-
-ls.add_snippets("all", todo_comment_snippets, { type = "snippets", key = "todo_comments" })
-
--- }}}
diff --git a/modules/by-name/nv/nvim/plgs/luasnip/lua/snippets/html/html.lua b/modules/by-name/nv/nvim/plgs/luasnip/lua/snippets/html/html.lua
deleted file mode 100644
index 568c97ec..00000000
--- a/modules/by-name/nv/nvim/plgs/luasnip/lua/snippets/html/html.lua
+++ /dev/null
@@ -1,102 +0,0 @@
-local get_visual = function(args, parent)
-  if #parent.snippet.env.SELECT_RAW > 0 then
-    return sn(nil, i(1, parent.snippet.env.SELECT_RAW))
-  else
-    return sn(nil, i(1))
-  end
-end
-
-local line_begin = require("luasnip.extras.expand_conditions").line_begin
-
-return {
-  -- HEADER
-  s(
-    {
-      trig = "h([123456])",
-      regTrig = true,
-      wordTrig = false,
-      snippetType = "autosnippet",
-    },
-    fmt(
-      [[
-          <h{}>{}</h{}>
-        ]],
-      {
-        f(function(_, snip) return snip.captures[1] end),
-        d(1, get_visual),
-        f(function(_, snip) return snip.captures[1] end),
-      }
-    ),
-    { condition = line_begin }
-  ), -- PARAGRAPH
-  s(
-    { trig = "pp", snippetType = "autosnippet" },
-    fmt(
-      [[
-          <p>{}</p>
-        ]],
-      { d(1, get_visual) }
-    ),
-    { condition = line_begin }
-  ), -- UNORDERED LIST
-  s(
-    { trig = "itt", snippetType = "autosnippet" },
-    fmt(
-      [[
-          <ul>
-            <li>{}</li>{}
-          </ul>
-        ]],
-      { i(1), i(0) }
-    ),
-    { condition = line_begin }
-  ), -- LIST ITEM
-  s(
-    { trig = "ii", snippetType = "autosnippet" },
-    fmt(
-      [[
-            <li>{}</li>
-        ]],
-      { d(1, get_visual) }
-    ),
-    { condition = line_begin }
-  ),
-  -- DOCUMENT TEMPLATE
-  s(
-    { trig = "base" },
-    fmt(
-      [[
-        <!doctype HTML>
-        <html lang="en">
-        <head>
-          <meta charset="UTF-8">
-          <title>{}</title>
-        </head>
-        <body>
-          {}
-        </body>
-        </html>
-        ]],
-      { i(1, "FooBar"), i(0) }
-    ),
-    { condition = line_begin }
-  ), -- ANCHOR TAG
-  s(
-    {
-      trig = "([^%l])aa",
-      regTrig = true,
-      wordTrig = false,
-      snippetType = "autosnippet",
-    },
-    fmt(
-      [[
-          {}<a href="{}">{}</a>
-        ]],
-      {
-        f(function(_, snip) return snip.captures[1] end),
-        i(1),
-        d(2, get_visual),
-      }
-    )
-  ),
-}
diff --git a/modules/by-name/nv/nvim/plgs/luasnip/lua/snippets/tex/delimiter.lua b/modules/by-name/nv/nvim/plgs/luasnip/lua/snippets/tex/delimiter.lua
deleted file mode 100644
index ef453973..00000000
--- a/modules/by-name/nv/nvim/plgs/luasnip/lua/snippets/tex/delimiter.lua
+++ /dev/null
@@ -1,28 +0,0 @@
-local get_visual = function(args, parent)
-  if #parent.snippet.env.SELECT_RAW > 0 then
-    return sn(nil, i(1, parent.snippet.env.SELECT_RAW))
-  else
-    return sn(nil, i(1, ""))
-  end
-end
-
-local translation_table = { ["("] = ")", ["{"] = "}", ["["] = "]" }
-
--- Return snippet tables
-return {
-  -- LEFT/RIGHT ALL BRACES
-  s(
-    {
-      trig = "([^%a])l([%(%[%{])",
-      regTrig = true,
-      wordTrig = false,
-      snippetType = "autosnippet",
-    },
-    fmta("<>\\left<><>\\right<>", {
-      f(function(_, snip) return snip.captures[1] end),
-      f(function(_, snip) return snip.captures[2] end),
-      d(1, get_visual),
-      f(function(_, snip) return translation_table[snip.captures[2]] end),
-    })
-  ),
-}
diff --git a/modules/by-name/nv/nvim/plgs/luasnip/lua/snippets/tex/greek.lua b/modules/by-name/nv/nvim/plgs/luasnip/lua/snippets/tex/greek.lua
deleted file mode 100644
index ebf4f9d7..00000000
--- a/modules/by-name/nv/nvim/plgs/luasnip/lua/snippets/tex/greek.lua
+++ /dev/null
@@ -1,37 +0,0 @@
--- Return snippet tables
-return {
-  s({ trig = ";a", snippetType = "autosnippet" }, { t("\\alpha") }),
-  s({ trig = ";b", snippetType = "autosnippet" }, { t("\\beta") }),
-  s({ trig = ";g", snippetType = "autosnippet" }, { t("\\gamma") }),
-  s({ trig = ";G", snippetType = "autosnippet" }, { t("\\Gamma") }),
-  s({ trig = ";d", snippetType = "autosnippet" }, { t("\\delta") }),
-  s({ trig = ";D", snippetType = "autosnippet" }, { t("\\Delta") }),
-  s({ trig = ";e", snippetType = "autosnippet" }, { t("\\epsilon") }),
-  s({ trig = ";ve", snippetType = "autosnippet" }, { t("\\varepsilon") }),
-  s({ trig = ";z", snippetType = "autosnippet" }, { t("\\zeta") }),
-  s({ trig = ";h", snippetType = "autosnippet" }, { t("\\eta") }),
-  s({ trig = ";o", snippetType = "autosnippet" }, { t("\\theta") }),
-  s({ trig = ";vo", snippetType = "autosnippet" }, { t("\\vartheta") }),
-  s({ trig = ";O", snippetType = "autosnippet" }, { t("\\Theta") }),
-  s({ trig = ";k", snippetType = "autosnippet" }, { t("\\kappa") }),
-  s({ trig = ";l", snippetType = "autosnippet" }, { t("\\lambda") }),
-  s({ trig = ";L", snippetType = "autosnippet" }, { t("\\Lambda") }),
-  s({ trig = ";m", snippetType = "autosnippet" }, { t("\\mu") }),
-  s({ trig = ";n", snippetType = "autosnippet" }, { t("\\nu") }),
-  s({ trig = ";x", snippetType = "autosnippet" }, { t("\\xi") }),
-  s({ trig = ";X", snippetType = "autosnippet" }, { t("\\Xi") }),
-  s({ trig = ";i", snippetType = "autosnippet" }, { t("\\pi") }),
-  s({ trig = ";I", snippetType = "autosnippet" }, { t("\\Pi") }),
-  s({ trig = ";r", snippetType = "autosnippet" }, { t("\\rho") }),
-  s({ trig = ";s", snippetType = "autosnippet" }, { t("\\sigma") }),
-  s({ trig = ";S", snippetType = "autosnippet" }, { t("\\Sigma") }),
-  s({ trig = ";t", snippetType = "autosnippet" }, { t("\\tau") }),
-  s({ trig = ";f", snippetType = "autosnippet" }, { t("\\phi") }),
-  s({ trig = ";vf", snippetType = "autosnippet" }, { t("\\varphi") }),
-  s({ trig = ";F", snippetType = "autosnippet" }, { t("\\Phi") }),
-  s({ trig = ";c", snippetType = "autosnippet" }, { t("\\chi") }),
-  s({ trig = ";p", snippetType = "autosnippet" }, { t("\\psi") }),
-  s({ trig = ";P", snippetType = "autosnippet" }, { t("\\Psi") }),
-  s({ trig = ";w", snippetType = "autosnippet" }, { t("\\omega") }),
-  s({ trig = ";W", snippetType = "autosnippet" }, { t("\\Omega") }),
-}
diff --git a/modules/by-name/nv/nvim/plgs/luasnip/snippets/all.lua b/modules/by-name/nv/nvim/plgs/luasnip/snippets/all.lua
new file mode 100644
index 00000000..371f5539
--- /dev/null
+++ b/modules/by-name/nv/nvim/plgs/luasnip/snippets/all.lua
@@ -0,0 +1,338 @@
+-- nixos-config - My current NixOS configuration
+--
+-- Copyright (C) 2025 Benedikt Peetz <benedikt.peetz@b-peetz.de>
+-- SPDX-License-Identifier: GPL-3.0-or-later
+--
+-- This file is part of my nixos-config.
+--
+-- You should have received a copy of the License along with this program.
+-- If not, see <https://www.gnu.org/licenses/gpl-3.0.txt>.
+
+local ls = require("luasnip")
+local fmt = require("luasnip.extras.fmt").fmt
+
+--- Get the comment string {begin,end} table
+---
+---@param comment_type integer 1 for `line`-comment and 2 for `block`-comment
+---@return table comment_strings {["begin"]=begin_comment_string, ["end"]=end_comment_string}
+local get_comment_string = function(comment_type)
+  local calculate_comment_string = require("Comment.ft").calculate
+  local utils = require("Comment.utils")
+
+  -- use the `Comments.nvim` API to fetch the comment string for the region (eq. '--%s' or '--[[%s]]' for `lua`)
+  local cstring =
+    calculate_comment_string({ ctype = comment_type; range = utils.get_region(); })
+
+  if cstring == nil then
+    -- TODO: Use `vim.bo.commentstring` <2025-05-02>
+
+    -- Use some useful default values.
+    return { ["begin"] = "#"; ["end"] = ""; }
+  end
+
+  -- as we want only the strings themselves and not strings ready for using `format` we want to split the left and right side
+  local left, right = utils.unwrap_cstr(cstring)
+
+  -- create a `{left, right}` table for it
+  return { ["begin"] = left; ["end"] = right; }
+end
+
+--- Wraps a table of snippet nodes in two comment function nodes.
+---
+---@param comment_type integer 1 for `line`-comment and 2 for `block`-comment
+---@param nodes table The nodes that should be wrapped
+---@return table wrapped_nodes The now wrapped `nodes` table.
+local wrap_snippet_in_comments = function(comment_type, nodes)
+  local output = {}
+
+  table.insert(output, ls.function_node(function()
+    return get_comment_string(comment_type)["begin"]
+  end))
+
+
+  for _, v in ipairs(nodes) do
+    table.insert(output, v)
+  end
+
+  table.insert(output, ls.function_node(function()
+    return get_comment_string(comment_type)["end"]
+  end))
+
+  return output
+end
+
+-- auto_pairs  {{{
+local get_visual = function(_, parent)
+  if #parent.snippet.env.SELECT_RAW > 0 then
+    return ls.snippet_node(nil, ls.insert_node(1, parent.snippet.env.SELECT_RAW))
+  else
+    return ls.snippet_node(nil, ls.insert_node(1, ""))
+  end
+end
+
+local function char_count_same(c1, c2)
+  local line = vim.api.nvim_get_current_line()
+  -- '%'-escape chars to force explicit match (gsub accepts patterns).
+  -- second return value is number of substitutions.
+  local _, ct1 = string.gsub(line, "%" .. c1, "")
+  local _, ct2 = string.gsub(line, "%" .. c2, "")
+  return ct1 == ct2
+end
+
+local function even_count(c, ...)
+  local line = vim.api.nvim_get_current_line()
+  local _, ct = string.gsub(line, c, "")
+  return ct % 2 == 0
+end
+
+-- This makes creation of pair-type snippets easier.
+local function pair(pair_begin, pair_end, file_types, condition_function)
+  -- FIXME(@Soispha): This only works if file_types == nil, otherwise the snippet does not expand.
+  -- It would be nice, if it would support both an empty array (`{}`) and nil <2023-08-27>
+  -- file_types = file_types or {};
+
+  return ls.snippet(
+    {
+      trig = pair_begin;
+      wordTrig = false;
+      snippetType = "autosnippet";
+    },
+    {
+      ls.text_node({ pair_begin; });
+      ls.dynamic_node(1, get_visual);
+      ls.text_node({ pair_end; });
+    },
+    {
+      condition = function()
+        local filetype_check = true
+
+        if file_types ~= nil then
+          filetype_check = file_types[vim.bo.filetype] or false
+        end
+
+        return (not condition_function(pair_begin, pair_end)) and filetype_check
+      end;
+    }
+  )
+end
+
+local auto_pairs = {
+  pair("(", ")", nil, char_count_same);
+  pair("{", "}", nil, char_count_same);
+  pair("[", "]", nil, char_count_same);
+  pair("<", ">", { ["rust"] = true; ["tex"] = true; }, char_count_same);
+  pair("'", "'", nil, even_count);
+  pair("\"", "\"", nil, even_count);
+  pair("`", "`", nil, even_count);
+}
+
+ls.add_snippets("all", auto_pairs, { type = "snippets"; key = "auto_pairs"; })
+-- }}}
+
+-- todo_comments {{{
+local read_git_config = function(config_value)
+  local command = string.format("git config \"%s\"", config_value)
+
+  local handle = io.popen(command)
+  if handle == nil then
+    return error(string.format("Failed to call `%s`.", command))
+  end
+
+  local result = handle:read("*a")
+  handle:close()
+
+  -- stripped = string.gsub(str, '%s+', '')
+  return string.gsub(result, "\n", "")
+end
+
+--- Create a @handle from a full name.
+---
+--- Example:
+--- “Benedikt Peetz” -> “@bpeetz”
+local handle_from_name = function(name)
+  -- from: https://stackoverflow.com/a/7615129
+  local split = function(inputstr, sep)
+    local t = {}
+    for str in string.gmatch(inputstr, "([^" .. sep .. "]+)") do
+      table.insert(t, str)
+    end
+    return t
+  end
+
+  -- Split on spaces
+  local parts = split(name, "%s")
+
+  local output_name = ""
+
+  if #parts > 2 then
+    -- Only use the first chars.
+    --
+    -- Example:
+    -- “Richard Matthew Stallman” -> “rms”
+    for _, val in ipairs(parts) do
+      output_name = string.format("%s%s", output_name, val:sub(1, 1))
+    end
+  elseif #parts == 2 then
+    output_name = string.format("%s%s", parts[1]:sub(1, 1), parts[2])
+  elseif #parts == 1 then
+    output_name = parts[1]
+  elseif #parts == 0 then
+    output_name = "<NoName>"
+  end
+
+  return string.format("@%s", output_name:lower())
+end
+
+--- Generate a comment snippet
+---
+---@param trig string The trigger
+---@param name string name for the comment (ex.: {FIX, ISSUE, FIXIT, BUG})
+---@param comment_type integer The comment type.
+---@param mark_function function: The function used to get the marks
+local todo_snippet = function(trig, name, comment_type, mark_function)
+  assert(trig, "context doesn't include a `trig` key which is mandatory")
+  assert(comment_type == 1 or comment_type == 2)
+
+  local context = {}
+  context.name = name .. " comment"
+  context.trig = trig
+
+  local date_node, signature_node = mark_function()
+
+  local nodes = fmt("{} {}{}: {} {} {}", wrap_snippet_in_comments(comment_type, {
+    ls.text_node(name);
+    signature_node;
+    ls.insert_node(1, "content");
+    date_node;
+  }))
+
+  return ls.snippet(context, nodes, { ctype = comment_type; })
+end
+
+---@param trigger string: The luasnip trigger
+---@param comment_type integer: The luasnip comment type
+---@param name string: All aliases for a name
+---@return table: All possible snippets build from the marks
+local process_marks = function(trigger, name, comment_type)
+  local username = function()
+    return handle_from_name(read_git_config("user.name"))
+  end
+
+  local marks = {
+    signature = function()
+      return ls.text_node("(" .. username() .. ")"), ls.text_node("")
+    end;
+
+    date_signature = function()
+      return ls.text_node("<" .. os.date("%Y-%m-%d") .. ">"), ls.text_node("(" .. username() .. ")")
+    end;
+
+    date = function()
+      return ls.text_node("<" .. os.date("%Y-%m-%d") .. ">"), ls.text_node("")
+    end;
+
+    empty = function()
+      return ls.text_node(""), ls.text_node("")
+    end;
+  }
+
+  local output = {}
+  for mark_name, mark_function in pairs(marks) do
+    local trig = trigger .. "-" .. mark_name
+
+    output[#output + 1] = todo_snippet(trig, name, comment_type, mark_function)
+  end
+
+  return output
+end
+
+local todo_snippet_specs = {
+  { { trig = "todo"; };  { "TODO"; };                                     { ctype = 1; }; };
+  { { trig = "fix"; };   { "FIXME"; "ISSUE"; };                           { ctype = 1; }; };
+  { { trig = "hack"; };  { "HACK"; };                                     { ctype = 1; }; };
+  { { trig = "warn"; };  { "WARNING"; };                                  { ctype = 1; }; };
+  { { trig = "perf"; };  { "PERFORMANCE"; "OPTIMIZE"; };                  { ctype = 1; }; };
+  { { trig = "note"; };  { "NOTE"; "INFO"; };                             { ctype = 1; }; };
+
+  -- NOTE: Block commented todo-comments
+  { { trig = "todob"; }; { "TODO"; };                                     { ctype = 2; }; };
+  { { trig = "fixb"; };  { "FIXME"; "ISSUE"; };                           { ctype = 2; }; };
+  { { trig = "hackb"; }; { "HACK"; };                                     { ctype = 2; }; };
+  { { trig = "warnb"; }; { "WARNING"; };                                  { ctype = 2; }; };
+  { { trig = "perfb"; }; { "PERF"; "PERFORMANCE"; "OPTIM"; "OPTIMIZE"; }; { ctype = 2; }; };
+  { { trig = "noteb"; }; { "NOTE"; "INFO"; };                             { ctype = 2; }; };
+}
+
+local todo_comment_snippets = {}
+for _, v in ipairs(todo_snippet_specs) do
+  local snippets = process_marks(v[1].trig, v[2][1], v[3].ctype)
+  for _, value in pairs(snippets) do
+    table.insert(todo_comment_snippets, value)
+  end
+end
+
+ls.add_snippets("all", todo_comment_snippets, { type = "snippets"; key = "todo_comments"; })
+-- }}}
+
+-- spdx snippets {{{
+local generate_spdx_snippet = function(comment_type, spdx_license_expr, trigger)
+  assert(trigger, "context doesn't include a `trig` key which is mandatory")
+  assert(comment_type == 1 or comment_type == 2)
+
+  local context = {}
+  context.name = trigger .. " spdx snippet expr"
+  context.trig = trigger
+
+
+  local nodes = {
+    fmt("{} SPDX-SnippetBegin {}", wrap_snippet_in_comments(comment_type, {}));
+
+    fmt("{} SPDX-SnippetCopyrightText: {} {} <{}> {}",
+        wrap_snippet_in_comments(comment_type, {
+          ls.insert_node(1, "year");
+          ls.insert_node(2, "author");
+          ls.insert_node(3, "email");
+        })
+    );
+
+    fmt("{} SPDX-License-Identifier: {} {}", wrap_snippet_in_comments(comment_type, {
+      ls.text_node(spdx_license_expr);
+    }));
+
+    { ls.insert_node(4, "content"); };
+
+    fmt("{} SPDX-SnippetEnd {}", wrap_snippet_in_comments(comment_type, {}));
+
+    { ls.insert_node(0); };
+  }
+
+  local newline_nodes = {}
+  for _, sub_nodes in ipairs(nodes) do
+    for _, node in ipairs(sub_nodes) do
+      table.insert(newline_nodes, node)
+    end
+
+    -- luasnip requires newlines to be encoded like this:
+    table.insert(newline_nodes, ls.text_node({ ""; ""; }))
+  end
+
+  return ls.snippet(context, newline_nodes, { ctype = comment_type; })
+end
+
+local spdx = {
+  { trigger = "spdx-AGPL3+"; license = "AGPL-3.0-or-later"; };
+  { trigger = "spdx-GPL3+";  license = "GPL-3.0-or-later"; };
+  { trigger = "spdx-MIT";    license = "MIT"; };
+}
+
+local spdx_snippets = {}
+for _, value in ipairs(spdx) do
+  local snippet = generate_spdx_snippet(1, value.license, value.trigger)
+  table.insert(spdx_snippets, snippet)
+
+  snippet = generate_spdx_snippet(2, value.license, value.trigger .. "-block")
+  table.insert(spdx_snippets, snippet)
+end
+
+ls.add_snippets("all", spdx_snippets, { type = "snippets"; key = "spdx_snippets"; })
+-- }}}
diff --git a/modules/by-name/nv/nvim/plgs/luasnip/snippets/tex/delimiter.lua b/modules/by-name/nv/nvim/plgs/luasnip/snippets/tex/delimiter.lua
new file mode 100644
index 00000000..bcd128f7
--- /dev/null
+++ b/modules/by-name/nv/nvim/plgs/luasnip/snippets/tex/delimiter.lua
@@ -0,0 +1,41 @@
+-- nixos-config - My current NixOS configuration
+--
+-- Copyright (C) 2025 Benedikt Peetz <benedikt.peetz@b-peetz.de>
+-- SPDX-License-Identifier: GPL-3.0-or-later
+--
+-- This file is part of my nixos-config.
+--
+-- You should have received a copy of the License along with this program.
+-- If not, see <https://www.gnu.org/licenses/gpl-3.0.txt>.
+
+local ls = require("luasnip")
+local fmt = require("luasnip.extras.fmt").fmt
+
+local get_visual = function(_, parent)
+  if #parent.snippet.env.SELECT_RAW > 0 then
+    return ls.snippet_node(nil, ls.insert_node(1, parent.snippet.env.SELECT_RAW))
+  else
+    return ls.snippet_node(nil, ls.insert_node(1, ""))
+  end
+end
+
+local translation_table = { ["("] = ")"; ["{"] = "}"; ["["] = "]"; }
+
+-- Return snippet tables
+return {
+  -- LEFT/RIGHT ALL BRACES
+  ls.snippet(
+    {
+      trig = "([^%a])l([%(%[%{])";
+      regTrig = true;
+      wordTrig = false;
+      snippetType = "autosnippet";
+    },
+    fmt("{}\\left{}{}\\right{}", {
+      ls.function_node(function(_, snip) return snip.captures[1] end);
+      ls.function_node(function(_, snip) return snip.captures[2] end);
+      ls.dynamic_node(1, get_visual);
+      ls.function_node(function(_, snip) return translation_table[snip.captures[2]] end);
+    })
+  );
+}
diff --git a/modules/by-name/nv/nvim/plgs/luasnip/snippets/tex/greek.lua b/modules/by-name/nv/nvim/plgs/luasnip/snippets/tex/greek.lua
new file mode 100644
index 00000000..21aa7414
--- /dev/null
+++ b/modules/by-name/nv/nvim/plgs/luasnip/snippets/tex/greek.lua
@@ -0,0 +1,49 @@
+-- nixos-config - My current NixOS configuration
+--
+-- Copyright (C) 2025 Benedikt Peetz <benedikt.peetz@b-peetz.de>
+-- SPDX-License-Identifier: GPL-3.0-or-later
+--
+-- This file is part of my nixos-config.
+--
+-- You should have received a copy of the License along with this program.
+-- If not, see <https://www.gnu.org/licenses/gpl-3.0.txt>.
+
+local ls = require("luasnip")
+
+-- Return snippet tables
+return {
+  ls.snippet({ trig = ";a"; snippetType = "autosnippet"; }, { ls.text_node("\\alpha"); });
+  ls.snippet({ trig = ";b"; snippetType = "autosnippet"; }, { ls.text_node("\\beta"); });
+  ls.snippet({ trig = ";g"; snippetType = "autosnippet"; }, { ls.text_node("\\gamma"); });
+  ls.snippet({ trig = ";G"; snippetType = "autosnippet"; }, { ls.text_node("\\Gamma"); });
+  ls.snippet({ trig = ";d"; snippetType = "autosnippet"; }, { ls.text_node("\\delta"); });
+  ls.snippet({ trig = ";D"; snippetType = "autosnippet"; }, { ls.text_node("\\Delta"); });
+  ls.snippet({ trig = ";e"; snippetType = "autosnippet"; }, { ls.text_node("\\epsilon"); });
+  ls.snippet({ trig = ";ve"; snippetType = "autosnippet"; }, { ls.text_node("\\varepsilon"); });
+  ls.snippet({ trig = ";z"; snippetType = "autosnippet"; }, { ls.text_node("\\zeta"); });
+  ls.snippet({ trig = ";h"; snippetType = "autosnippet"; }, { ls.text_node("\\eta"); });
+  ls.snippet({ trig = ";o"; snippetType = "autosnippet"; }, { ls.text_node("\\theta"); });
+  ls.snippet({ trig = ";vo"; snippetType = "autosnippet"; }, { ls.text_node("\\vartheta"); });
+  ls.snippet({ trig = ";O"; snippetType = "autosnippet"; }, { ls.text_node("\\Theta"); });
+  ls.snippet({ trig = ";k"; snippetType = "autosnippet"; }, { ls.text_node("\\kappa"); });
+  ls.snippet({ trig = ";l"; snippetType = "autosnippet"; }, { ls.text_node("\\lambda"); });
+  ls.snippet({ trig = ";L"; snippetType = "autosnippet"; }, { ls.text_node("\\Lambda"); });
+  ls.snippet({ trig = ";m"; snippetType = "autosnippet"; }, { ls.text_node("\\mu"); });
+  ls.snippet({ trig = ";n"; snippetType = "autosnippet"; }, { ls.text_node("\\nu"); });
+  ls.snippet({ trig = ";x"; snippetType = "autosnippet"; }, { ls.text_node("\\xi"); });
+  ls.snippet({ trig = ";X"; snippetType = "autosnippet"; }, { ls.text_node("\\Xi"); });
+  ls.snippet({ trig = ";i"; snippetType = "autosnippet"; }, { ls.text_node("\\pi"); });
+  ls.snippet({ trig = ";I"; snippetType = "autosnippet"; }, { ls.text_node("\\Pi"); });
+  ls.snippet({ trig = ";r"; snippetType = "autosnippet"; }, { ls.text_node("\\rho"); });
+  ls.snippet({ trig = ";s"; snippetType = "autosnippet"; }, { ls.text_node("\\sigma"); });
+  ls.snippet({ trig = ";S"; snippetType = "autosnippet"; }, { ls.text_node("\\Sigma"); });
+  ls.snippet({ trig = ";t"; snippetType = "autosnippet"; }, { ls.text_node("\\tau"); });
+  ls.snippet({ trig = ";f"; snippetType = "autosnippet"; }, { ls.text_node("\\phi"); });
+  ls.snippet({ trig = ";vf"; snippetType = "autosnippet"; }, { ls.text_node("\\varphi"); });
+  ls.snippet({ trig = ";F"; snippetType = "autosnippet"; }, { ls.text_node("\\Phi"); });
+  ls.snippet({ trig = ";c"; snippetType = "autosnippet"; }, { ls.text_node("\\chi"); });
+  ls.snippet({ trig = ";p"; snippetType = "autosnippet"; }, { ls.text_node("\\psi"); });
+  ls.snippet({ trig = ";P"; snippetType = "autosnippet"; }, { ls.text_node("\\Psi"); });
+  ls.snippet({ trig = ";w"; snippetType = "autosnippet"; }, { ls.text_node("\\omega"); });
+  ls.snippet({ trig = ";W"; snippetType = "autosnippet"; }, { ls.text_node("\\Omega"); });
+}