move togglemouse into vimrc, fix compatibility

vimplugins

@@ -14,7 +14,6 @@ Plug 'ervandew/supertab'
 Plug 'jeetsukumaran/vim-buffergator'
 Plug 'junegunn/vim-easy-align'
 Plug 'mhinz/vim-signify'
-Plug 'nvie/vim-togglemouse'
 Plug 'tpope/vim-fugitive'
 Plug 'tpope/vim-sleuth'
 Plug 'vimwiki/vimwiki'
@@ -35,9 +34,6 @@ call plug#end()
 let g:signify_vcs_list=[ 'git', 'fossil' ]
 let g:signify_sign_change='~'
 
-" vim-togglemouse options
-nmap <Leader>m <F12>
-
 " easy-align options
 xmap <Leader>a <Plug>(EasyAlign)
 nmap <Leader>a <Plug>(EasyAlign)

vimrc

@@ -1,6 +1,6 @@
 " various settings
 set nobackup number nomodeline cursorline backspace=indent,eol,start
-set formatoptions+=j foldmethod=marker ttymouse=xterm2 mouse=
+set foldmethod=marker ttymouse=xterm2 mouse=
 " hidden characters
 set list listchars=tab:\|_,nbsp:x,trail:*
 " search
@@ -20,11 +20,10 @@ set statusline=[%F]\ %R%H%W%M\ %=[%{&fenc}/%{&ff}]\ %y\ [%4l/%L:%3v]
 let g:sh_indent_case_labels=1
 " version specific settings
 if v:version >= 703
-    set colorcolumn=80 relativenumber
+    set colorcolumn=80 relativenumber formatoptions+=j
 endif
 if v:version >= 800
-    set breakindent
-    set keymap=russian-jcukenwintype iminsert=0 imsearch=0
+    set breakindent keymap=russian-jcukenwintype iminsert=0 imsearch=0
     inoremap <C-@> <C-^>
     cnoremap <C-@> <C-^>
     inoremap <C-Space> <C-^>
@@ -68,6 +67,24 @@ nnoremap qa :qa<CR>
 nnoremap qs :wq<CR>
 nnoremap <Leader>s :w<CR>
 
+" mouse toggle
+fun! s:ToggleMouse()
+    if !exists("s:old_mouse")
+        let s:old_mouse = "a"
+    endif
+
+    if &mouse == ""
+        let &mouse = s:old_mouse
+        echo "mouse enabled (" . &mouse . ")"
+    else
+        let s:old_mouse = &mouse
+        let &mouse=""
+        echo "mouse disabled"
+    endif
+endfunction
+noremap <Leader>m :call <SID>ToggleMouse()<CR>
+inoremap <Leader>m <Esc>:call <SID>ToggleMouse()<CR>a
+
 " plugins
 let plugins = expand("$HOME/.vimplugins")
 if filereadable(plugins) && v:version >= 703