Add :PreProcIfWrap command and C/C++ mappings

Quickly wrap a line or range in `#if 0`/`#endif` to quickly disable
compilation of sections of code.

after/ftplugin/c.lua

@@ -0,0 +1,3 @@
+local opts = { buffer = true, remap = false, silent = true }
+vim.keymap.set('n', '0', ':PreProcIfWrap<CR>', opts)
+vim.keymap.set('v', '0', ':PreProcIfWrap<CR>', opts)

after/ftplugin/cpp.lua

@@ -1,2 +1,6 @@
 vim.opt.commentstring = '//%s'
 vim.opt.matchpairs:append('<:>')
+
+local opts = { buffer = true, remap = false, silent = true }
+vim.keymap.set('n', '0', ':PreProcIfWrap<CR>', opts)
+vim.keymap.set('v', '0', ':PreProcIfWrap<CR>', opts)

lua/plugins/telescope.lua

@@ -5,6 +5,7 @@ return {
     'nvim-telescope/telescope-fzy-native.nvim',
     'nvim-tree/nvim-web-devicons',
     'axkirillov/easypick.nvim',
+    'benfowler/telescope-luasnip.nvim',
   },
   config = function()
     local telescope = require('telescope')
@@ -28,6 +29,7 @@ return {
       },
     })
     telescope.load_extension('fzy_native')
+    telescope.load_extension('luasnip')
 
     local builtin = require('telescope.builtin')
     local opts = { noremap = true }

plugin/commands.lua

@@ -126,3 +126,13 @@ vim.api.nvim_create_user_command('Rg', function(opts)
   end
   require('telescope.builtin').grep_string(grep_opts)
 end, { bang = true, nargs = '*' })
+
+vim.api.nvim_create_user_command('PreProcIfWrap', function(opts)
+  local buffer = vim.api.nvim_get_current_buf()
+  vim.api.nvim_buf_set_lines(
+    buffer, opts.line2, opts.line2, true, { '#endif' })
+  vim.api.nvim_buf_set_lines(
+    buffer, opts.line1 - 1, opts.line1 - 1, true, { '#if 0' })
+  local window = vim.api.nvim_get_current_win()
+  vim.api.nvim_win_set_cursor(window, {opts.line1, 5})
+end, { range = true })

plugin/statusline.lua

@@ -75,7 +75,7 @@ local function special(group, name, title)
 end
 
 -- Construct a statusline for generic buffer types.
-local function generic(group, name, show_lsp)
+local function generic(group, name)
   -- Display current mode with dynamic highlights.
   local line = '%#' .. group .. '# ' .. name .. ' '
   -- Display spell or paste if set with dusk highlights in a group to swallow
@@ -131,11 +131,11 @@ function _G.statusline_active()
     return special('StatusLineLight', 'Terminal', '%f')
   elseif vim.o.previewwindow then
     if mode == 'Normal' then mode = 'Preview' end
-    return generic('StatusLineLight', mode, false)
+    return generic('StatusLineLight', mode)
   elseif vim.o.filetype == 'man' then
     return special('StatusLineDusk', 'Manual', '%f')
   end
-  return generic('StatusLineLight', mode, true)
+  return generic('StatusLineLight', mode)
 end
 
 function _G.statusline_inactive()
@@ -152,11 +152,11 @@ function _G.statusline_inactive()
   elseif vim.o.buftype == 'terminal' then
     line = special('StatusLineDusk', 'Terminal', '%f')
   elseif vim.o.previewwindow then
-    line = generic('StatusLineDusk', 'Preview', false)
+    line = generic('StatusLineDusk', 'Preview')
   elseif vim.o.filetype == 'man' then
     line = special('StatusLineDusk', 'Manual', '%f')
   else
-    line = generic('StatusLineDusk', 'Idle', false)
+    line = generic('StatusLineDusk', 'Idle')
   end
   return line
 end

snippets/go.lua

@@ -0,0 +1,59 @@
+# Go LuaSnip Snippets
+
+local luasnip = require('luasnip')
+local snip = luasnip.snippet
+local text = luasnip.text_node
+local ins = luasnip.insert_node
+local func = luasnip.function_node
+local node = luasnip.snippet_node
+local key = require("luasnip.nodes.key_indexer").new_key
+
+local function short_name(name)
+  local short = string.lower(string.sub(name, 1, 1))
+  for i = 2, #name do
+    local char = string.sub(name, i, i)
+    if char == string.upper(char) then
+      short = short .. char
+    end
+  end
+  return string.lower(short)
+end
+
+local snippets = {
+
+  snip('func', {
+    text('func '),
+    node(1, {
+      func(function(args)
+        if string.len(args[1][1]) > 0 then
+          return '(' .. short_name(args[1][1]) .. ' *'
+        end
+        return ''
+      end, key('type')),
+      ins(1, '', { key = 'type' }),
+      func(function(args)
+        if string.len(args[1][1]) > 0 then
+          return ') '
+        end
+        return ''
+      end, key('type')),
+    }),
+    ins(2, 'name'),
+    text('('),
+    ins(3, ''),
+    text(') '),
+    ins(4, '', { key = 'return' }),
+    func(function(args)
+      if string.len(args[1][1]) > 0 then
+        return ' '
+      end
+      return ''
+    end, key('return')),
+    text({ '{', '\t' }),
+    ins(0, ''),
+    text({ '', '}' }),
+  }),
+
+}
+
+return snippets