Handle keyboard shortcuts at plugin load time

Don't load plugins based on keyboard shortcuts, as this conflicts with
vim-which-key. Instead, create shortcuts when plugins are declared, and
load them when the commands they provide are used.

plugins/ctrlp.vim.cfg.vim

@@ -1,6 +1,2 @@
 let g:ctrlp_working_path_mode = ''	" Disable CtrlP-controlled chdir
 let g:ctrlp_map = ''			" Disable default mapping
-
-nnoremap <Leader>pp :CtrlPBuffer<CR>
-nnoremap <Leader>po :CtrlPMRUFiles<CR>
-nnoremap <Leader>pi :CtrlP<CR>

plugins/ctrlp.vim.load.vim

@@ -1,6 +1,8 @@
 call dein#add('ctrlpvim/ctrlp.vim', #{
 	\	lazy: 1,
-	\	on_map: #{
-	\		n: [ '<Leader>pi' , '<Leader>po', '<Leader>pp' ]
-	\	}
+	\	on_cmd: ['CtrlPBuffer', 'CtrlPMRUFiles', 'CtrlP']
 	\ })
+
+nnoremap <Leader>pp :CtrlPBuffer<CR>
+nnoremap <Leader>po :CtrlPMRUFiles<CR>
+nnoremap <Leader>pi :CtrlP<CR>

plugins/dein-ui.vim.cfg.vim

@@ -1,3 +0,0 @@
-" Add key mappings for updates and installation
-nnoremap <silent> <Leader>Pu :DeinUpdate<cr>
-nnoremap <silent> <Leader>Pi :call CheckDeinInstall()<cr>

plugins/dein-ui.vim.load.vim

@@ -1,6 +1,8 @@
 call dein#add('wsdjeg/dein-ui.vim', #{
 	\	lazy: 1,
-	\	on_map: #{
-	\		n: [ '<Leader>Pu' , '<Leader>Pi' ]
-	\	}
+	\	on_cmd: ['DeinUpdate'],
 	\ })
+
+" Add key mappings for updates and installation
+nnoremap <silent> <Leader>Pu :DeinUpdate<cr>
+nnoremap <silent> <Leader>Pi :call CheckDeinInstall()<cr>

plugins/nerdtree.cfg.vim

@@ -1,6 +1,5 @@
 " NERDTree: ' e' = toggle side bar
 let g:NERDTreeGitStatusUpdateOnWrite = 1
-nnoremap <Leader>e :NERDTreeToggle<CR>
 
 " Set the bookmarks file's path
 let g:NERDTreeBookmarksFile = GetVardataPath( 'NTBookmarks' )

plugins/nerdtree.load.vim

@@ -1,4 +1,6 @@
 call dein#add('scrooloose/nerdtree', #{
 	\	lazy: 1,
-	\	on_map: #{ n: ['<Leader>e'] },
+	\	on_cmd: [ 'NERDTree', 'NERDTreeToggle' ],
 	\ })
+
+nnoremap <Leader>e :NERDTreeToggle<CR>

plugins/undotree.cfg.vim

@@ -1,5 +1,2 @@
-" Keyboard shortcut
-nnoremap <Leader>u :UndotreeToggle<CR>
-
 " Hide the sign column
 autocmd FileType undotree setlocal signcolumn=no

plugins/undotree.load.vim

@@ -1,4 +1,6 @@
 call dein#add('mbbill/undotree', #{
 	\	lazy: 1 ,
-	\	on_map: #{ n: [ '<Leader>u' ] },
+	\	on_cmd: [ 'UndotreeShow', 'UndotreeToggle' ],
 	\ })
+
+nnoremap <Leader>u :UndotreeToggle<CR>

plugins/vim-which-key.post.vim

@@ -2,7 +2,6 @@
 nnoremap <silent> <Space> :<c-u>WhichKey '<Space>'<CR>
 let g:which_key_map = {}
 call which_key#register('<Space>', 'g:which_key_map')
-let g:which_key_fallback_to_native_key = 1
 
 " Direct commands
 let g:which_key_map[' '] = [ 'call feedkeys(":nohlsearch\n")' , 'clear-search' ]