revert cargo workspace feature

vim/ftplugin/himalaya-msg-list.vim

@@ -0,0 +1,20 @@
+setlocal buftype=nofile
+setlocal cursorline
+setlocal nomodifiable
+setlocal nowrap
+
+call himalaya#shared#bindings#define([
+  \["n", "gm"  , "mbox#change"    ],
+  \["n", "gp"  , "mbox#prev_page" ],
+  \["n", "gn"  , "mbox#next_page" ],
+  \["n", "<cr>", "msg#read"       ],
+  \["n", "gw"  , "msg#write"      ],
+  \["n", "gr"  , "msg#reply"      ],
+  \["n", "gR"  , "msg#reply_all"  ],
+  \["n", "gf"  , "msg#forward"    ],
+  \["n", "ga"  , "msg#attachments"],
+  \["n", "gC"  , "msg#copy"       ],
+  \["n", "gM"  , "msg#move"       ],
+  \["n", "gD"  , "msg#delete"     ],
+  \["v", "gD"  , "msg#delete"     ],
+\])

vim/ftplugin/himalaya-msg-read.vim

@@ -0,0 +1,17 @@
+setlocal bufhidden=wipe
+setlocal buftype=nofile
+setlocal filetype=mail
+setlocal foldexpr=himalaya#shared#thread#fold(v:lnum)
+setlocal foldmethod=expr
+setlocal nomodifiable
+
+call himalaya#shared#bindings#define([
+  \["n", "gw", "msg#write"      ],
+  \["n", "gr", "msg#reply"      ],
+  \["n", "gR", "msg#reply_all"  ],
+  \["n", "gf", "msg#forward"    ],
+  \["n", "ga", "msg#attachments"],
+  \["n", "gC", "msg#copy"       ],
+  \["n", "gM", "msg#move"       ],
+  \["n", "gD", "msg#delete"     ],
+\])

vim/ftplugin/himalaya-msg-write.vim

@@ -0,0 +1,14 @@
+setlocal filetype=mail
+setlocal foldexpr=himalaya#shared#thread#fold(v:lnum)
+setlocal foldmethod=expr
+setlocal startofline
+
+if exists("g:himalaya_complete_contact_cmd")
+  setlocal completefunc=himalaya#msg#complete_contact
+endif
+
+augroup himalaya_write
+  autocmd! * <buffer>
+  autocmd  BufWriteCmd <buffer> call himalaya#msg#draft_save()
+  autocmd  BufLeave    <buffer> call himalaya#msg#draft_handle()
+augroup end