feat(tags): add support for displaying tag kind (#3235)

* Add kind to builtin.tags picker

* Add show_kind option

* Make show_kind true by default

* [docgen] Update doc/telescope.txt
skip-checks: true

* lint

---------

Co-authored-by: Ruben Laguna <ruben.laguna@tele2.com>
Co-authored-by: Github Actions <actions@github>

lua/telescope/make_entry.lua

@@ -1017,10 +1017,12 @@ end
 function make_entry.gen_from_ctags(opts)
   opts = opts or {}
 
+  local show_kind = vim.F.if_nil(opts.show_kind, true)
   local cwd = utils.path_expand(opts.cwd or vim.loop.cwd())
   local current_file = Path:new(vim.api.nvim_buf_get_name(opts.bufnr)):normalize(cwd)
 
   local display_items = {
+    { width = 16 },
     { remaining = true },
   }
 
@@ -1062,6 +1064,7 @@ function make_entry.gen_from_ctags(opts)
           end,
         },
         entry.tag,
+        entry.kind,
         scode,
       }
     end
@@ -1089,13 +1092,14 @@ function make_entry.gen_from_ctags(opts)
       return nil
     end
 
-    local tag, file, scode, lnum
+    local tag, file, scode, lnum, extension_fields
-    -- ctags gives us: 'tags\tfile\tsource'
+    -- ctags gives us: 'tags\tfile\tsource;"extension_fields'
-    tag, file, scode = string.match(line, '([^\t]+)\t([^\t]+)\t/^?\t?(.*)/;"\t+.*')
+    tag, file, scode, extension_fields = string.match(line, '([^\t]+)\t([^\t]+)\t/^?\t?(.*)/;"\t+(.*)')
     if not tag then
       -- hasktags gives us: 'tags\tfile\tlnum'
       tag, file, lnum = string.match(line, "([^\t]+)\t([^\t]+)\t(%d+).*")
     end
+    local kind = string.match(extension_fields or "", "kind:(%S+)")
 
     if Path.path.sep == "\\" then
       file = string.gsub(file, "/", "\\")
@@ -1124,6 +1128,9 @@ function make_entry.gen_from_ctags(opts)
     tag_entry.filename = file
     tag_entry.col = 1
     tag_entry.lnum = lnum and tonumber(lnum) or 1
+    if show_kind then
+      tag_entry.kind = kind
+    end
 
     return setmetatable(tag_entry, mt)
   end