nvim: after/ftplugin/markdown: Set conceallevel to 2

neovim 0.10 introduces experimental support for hyperlinks using
OSC 8 sequence. By default, this is used in Markdown for links of
the form [example](https://example.com). If terminal supports the
OSC 8 escape sequence, then the text example in the neovim buffer
will contain a hyperlink that can be clicked and it will open in
web browser.

This means markdown files with conceallevel=2 look much closer to
the rendered output.

fish/.config/fish/functions/lo.fish

@@ -0,0 +1,13 @@
+function lo --description 'Open a .log file in /tmp or given path'
+    if count $argv >/dev/null
+        set logpath "$argv"
+    else
+        set logpath /tmp
+    end
+
+    find $logpath -maxdepth 1 -regextype posix-extended -regex ".*\.(log)" -printf '%T@ %p\n' | sort -k 1 -n -r | fzf --bind "ctrl-d:half-page-down,ctrl-u:half-page-up" | awk -F' ' '{print $2}' | read -l result
+
+    if test -n "$result"
+        nvim "$result"
+    end
+end

nvim/.config/nvim/after/ftplugin/markdown.lua

@@ -1,4 +1,5 @@
-vim.bo.textwidth = 0
+vim.bo.textwidth    = 0
+vim.wo.conceallevel = 2
 
 vim.api.nvim_create_autocmd({ "BufWritePost" }, {
   buffer  = 0,