Conditional <Tab>-Key

When NERDTree has the focus: Jump to the file, but when the file has the
focus, jump to the next buffer.

1 files changed, 12 insertions, 3 deletions

diff --git a/vimrc b/vimrc
index 8050640..418ce26 100644
--- a/vimrc
+++ b/vimrc
@@ -72,9 +72,15 @@ set statusline+=%*
 let g:LatexBox_latexmk_preview_continuously   = 1
 let g:LatexBox_viewer                         = "evince"
 let g:syntastic_always_populate_loc_list      = 1
-let g:syntastic_auto_loc_list                 = 1
+let g:syntastic_auto_loc_list                 = 0
 let g:syntastic_check_on_open                 = 1
 let g:syntastic_check_on_wq                   = 0
+let g:syntastic_quiet_messages                = {"type":"style"} " filter (=do not display) style/formatting errors and warnings
+" Syntastic
+let g:syntastic_error_symbol                  = '✖'
+let g:syntastic_style_error_symbol            = '✗'
+let g:syntastic_warning_symbol                = '➔'
+let g:syntastic_style_warning_symbol          = '≈'
 
 Plug 'davidhalter/jedi-vim'                           " jedi gets used to display python function signatures
 let g:jedi#completions_enabled                = 0     " we do not need completions, because we have YouCompleteMe
@@ -124,13 +130,16 @@ inoremap <C-Space> <C-x><C-o>
 "inoremap <C-@> <C-Space>
 vnoremap < <gv|                   " allows deindenting a selected block and keeps selection
 vnoremap > >gv|                   " allows indenting a selected block and keeps selection
-nnoremap <Tab> :bn<CR>|           " lets one use (CTRL+)Tab to switch between buffers
-nnoremap <S-Tab> :bp<CR>|         " use (CTRL+)Shift+Tab to switch to previous buffers
+" if NERDTree has the focus, pressing <Tab> should jump to the next window, but if the file
+" buffer is selected <Tab> should select the next buffer (:bn). That is archived by :h map-expr
+nnoremap <expr> <Tab>   bufname("%")=='NERD_tree_1' ? '<C-W><C-W>' : ':bn<CR>'
+nnoremap <expr> <S-Tab> bufname("%")=='NERD_tree_1' ? '<C-W><C-W>' : ':bp<CR>'
 inoremap <C-Backspace> <C-W>|     " Bind CTRL+Backspace to vims version (CTRL+W) in insert mode
 
 
 " settings ============================================.
 " set shell=/bin/bash           | " many scripts rely on bash, but its path varies why it is commented out here
+set mouse=a                   | " also supported by vim, should be default
 set noshowmode                | " because we are using some powerline derivat
 set hidden                    | " allows switiching buffers even if the current buffer contains changes (displays +)
 set confirm                   | " asks 'do you want to save?'