snippets: add some markdown snippets

- Adds a snippet to create a link in markdown reference syntax.
- Adds a frontmatter snippet for my INC notes.
- Replace the fronmatter snippet for markdown with a formatted one,
  easier to read.
- Improves the description of my markdown snippets.
- Enables the search highlighting.

Co-Authored-by: iGor milhit <igor@milhit.ch>

init.lua

@@ -229,7 +229,7 @@ vim.opt.rtp:append (vim.fn.stdpath ('data') .. '/site')
 -- NOTE: You can change these options as you wish!
 
 -- Set highlight on search
-vim.o.hlsearch = false
+vim.o.hlsearch = true
 
 -- Make line numbers default
 vim.wo.number = true

my_snippets/all.lua

@@ -1,14 +0,0 @@
-return {
-  -- A snippet that expands the trigger "hi" into the string "Hello, world!".
-  require("luasnip").snippet(
-    { trig = "hi" },
-    { t("Hello, world!") }
-  ),
-
-  -- To return multiple snippets, use one `return` statement per snippet file
-  -- and return a table of Lua snippets.
-  require("luasnip").snippet(
-    { trig = "foo" },
-    { t("Another snippet.") }
-  )
-}

my_snippets/markdown.lua

@@ -3,6 +3,7 @@ local s = ls.snippet
 local t = ls.text_node
 local i = ls.insert_node
 local f = ls.function_node
+local fmt = require("luasnip.extras.fmt").fmt
 
 -- Function to get the datetime
 --   with daylight saving time
@@ -11,6 +12,14 @@ local get_date = function()
   return os.date("%Y-%m-%dT%H:%M:%S%z")
 end
 
+local get_month = function()
+  return os.date("%B")
+end
+
+local get_month_year = function()
+  return os.date("%B-%Y")
+end
+
 -- Function to get an id based on the datetime 
 local get_id = function()
   return os.date("%Y%m%d%H%M%S")
@@ -20,6 +29,7 @@ return {
   s(
     {
       trig = "datetime",
+      name = "Datetime",
       dscr = "Insert datetime with locale daylight saving"
     },
     {
@@ -29,6 +39,7 @@ return {
   s(
     {
       trig = "id",
+      Name = "ID",
       dscr = "Insert an id based on the datetime"
     },
     {
@@ -37,20 +48,72 @@ return {
   ),
   s(
     {
-      trig = "yaml",
-      dscr = "Insert a YAML frontmatter for markdown"
+      trig = "fm",
+      name = "YAML frontmatter",
+      dscr = "Insert a YAML frontmatter for markdown files.\n\nIt has a datetime with the locale daylight saving time, and an ID based on the datetime.\nTab to jump to next text input."
     },
+    fmt(
+      [[
+        ---
+        title: {1}
+        date: {3}
+        id: {4}
+        tags: [{2}]
+        ---
+
+      ]],
+      {
+        i(1, "title"),
+        i(2, "tags"),
+        f(get_date, {}),
+        f(get_id, {})
+      }
+    )
+  ),
+  s(
     {
-      t { "---", "title: " },
-      i(1, "title"),
-      t{ "", "date: " },
-      f(get_date, {}),
-      t{ "", "id: " },
-      f(get_id, {}),
-      t{ "","tags: [" },
-      i(2, "tags"),
-      t{ "]", "---", "" },
-      i(0),
-    }
+      trig = "inc",
+      name = "INC YAML frontmatter",
+      dscr = "Insert a YAML frontmatter for INC notes.\n\nIt has a datetime with the locale daylight saving time, prefilled title, author, categories and tags.\nAdjust the title manually."
+    },
+    fmt(
+      [[
+        ---
+        title: {1}
+        creation_date: {2}
+        author: iGor milhit
+        categories: [inc]
+        tags: [notes, quotidien, {3}]
+        ---
+
+      ]],
+      {
+        f(get_month_year, {}),
+        f(get_date, {}),
+        f(get_month, {})
+      }
+    )
+  ),
+  s(
+    {
+      trig="reflink",
+      name = "Reference link",
+      dscr="Insert a link with reference syntax",
+      docstring = "[Link text][Reference]\n\n[Reference]: Link Target \"Title\"\n\nTab to jump to next text input. \"Reference\" is automatically repeated."
+    },
+    fmt(
+      [[
+        [{1}][{2}]
+
+        [{2}]: {3} "{4}"
+      ]],
+      {
+        i(1, "Link text"),
+        i(2, "Reference"),
+        i(3, "Link target"),
+        i(4, "Title")
+      },
+      { repeat_duplicates = true }
+    )
   )
 }