From f49a20176b8f18bc464451bc3da769c181388752 Mon Sep 17 00:00:00 2001
From: Robert Günzler <r@gnzler.io>
Date: Wed, 21 Sep 2022 18:55:48 +0200
Subject: vim: markdown, conceal and toggle checkbox

---
 .vim/after/ftplugin/markdown.lua | 30 ++++++++++++++++++++++++------
 1 file changed, 24 insertions(+), 6 deletions(-)

(limited to '.vim/after/ftplugin/markdown.lua')

diff --git a/.vim/after/ftplugin/markdown.lua b/.vim/after/ftplugin/markdown.lua
index 1b299e2..d07e131 100644
--- a/.vim/after/ftplugin/markdown.lua
+++ b/.vim/after/ftplugin/markdown.lua
@@ -1,17 +1,35 @@
 require('spell')
 vim.opt.foldlevel = 1
 
--- vim.fn.matchadd('Conceal', '\\[ \\]', 0, -1, { conceal = '☐' })
--- vim.fn.matchadd('Conceal', '\\[x\\]', 0, -1, { conceal = '☑' })
--- vim.fn.matchadd('Conceal', '\\[-\\]', 0, -1, { conceal = '☒' })
--- vim.fn.matchadd('Conceal', '\\[\\]', 0, -1, { conceal = '🞕' })
+vim.fn.matchadd('Conceal', '- \\[ \\]\\&- \\zs\\[ ', 0, -1, { conceal = '☐ ' })
+-- vim.fn.matchadd('Conceal', '\\[x\\]', 0, -1, { conceal = '☑ ' })
+-- vim.fn.matchadd('Conceal', '\\[-\\]', 0, -1, { conceal = '☒ ' })
+vim.fn.matchadd('Conceal', '- \\[x\\]\\&- \\zs\\[x', 0, -1, { conceal = '🞕 ' })
+vim.fn.matchadd('Conceal', '- \\[[ x]\\zs\\]', 0, -1, { conceal = ' ' })
 
 vim.keymap.set('n', '<Plug>Markdown_OpenUrlUnderCursor',
-  function() require('misc').open_under_cursor('url-launcher') end,
-)
+  function() require('misc').open_under_cursor('url-launcher') end)
 
 vim.keymap.set('n', '<localleader>l', require('misc').link_preview, {desc='link preview'})
 
+local function toggle_checkbox()
+  local ln, n = vim.api.nvim_get_current_line(), 0
+  ln, n = string.gsub(ln, '%[ %]', '[x]', 1)
+  if n > 0 then goto set_line end
+  ln, n = string.gsub(ln, '%[x%]', '[ ]', 1)
+  if n > 0 then goto set_line end
+  ln, n = string.gsub(ln, 'TODO', 'DONE', 1)
+  if n > 0 then goto set_line end
+  ln, n = string.gsub(ln, 'DONE', 'TODO', 1)
+  if n > 0 then goto set_line end
+
+::set_line::
+  vim.api.nvim_set_current_line(ln)
+end
+vim.keymap.set('n', '<space><space>', toggle_checkbox, {desc='toggle checkbox'})
+vim.keymap.set('n', '<tab><tab>', toggle_checkbox, {desc='toggle checkbox'})
+vim.keymap.set('i', '<c-tab>', toggle_checkbox, {desc='toggle checkbox'})
+
 -- vim.keymap.set('n', '<leader>zn', function() require('zk').new() end)
 -- vim.keymap.set('n', '<leader>zi', function() require('zk').index() end)
 -- vim.cmd [[ command! -nargs=* ZettelkastenNew lua require('zk').new(nil, <f-args>) ]]
-- 
cgit 1.4.1