I'd like to map F2 in VIM so that it first saves the file with :w and then calls a script /home/user/proj/script.sh that will upload the changed files to the server.
I already tried
:map F2 :w<cr>|:! /home/user/proj/script.sh
but that doesn't work.
Please tell my why this isn't working and help me to get this working.
Try :noremap <F2> :<c-u>update <bar> !/home/user/proj/script.sh<cr>.
noremap vs. map
This creates a non-recursive mapping. See Wikia - Mappings keys in Vim
I just assumed this, because it's what people want most of the time. :-)
update vs. write
Only save the file if there were actual changes. See: :help :update.
<bar> vs. |
:help map_bar
<c-u>?
You used a generic mapping, instead of one for a certain mode, like nmap for normal mode mappings. Thus the mapping could also be triggered in visual mode. If you select something in visual mode and hit :, you'll see the commandline is prefixed with a range. But you don't want that in your case and <c-u> clears the commandline.
<cr> at the end?
Your mapping drops into the commandline mode and inserts 2 things separated by <bar>. Afterwards it has to execute what it has written, thus you need to append a <cr>.
I would like to start using buffers from time to time (rather than always using tabs).
I've become accustomed to using a short-cut, Ctrl+J & Ctrl+K to move between tabs.
Is there a way to map these short-cuts in a way that will handle tabs or buffers intelligently?
How about switching tabs when there are multiple, and switching buffers where there's only one tab page?! That can be done with a simple mapping:
:nnoremap <silent> <C-j> :<C-u>if tabpagenr('$') > 1<Bar>tabnext<Bar>else<Bar>bnext<Bar>endif<CR>
There's an interesting but under-used and semi-impractical option that allows you to switch to a buffer where it is instead of right here: :help 'switchbuf'.
It's interesting because the default behavior of :bn (for example, it's te same for all :b* commands) is to replace the current buffer by the one you are switching to, whether it's already displayed elsewhere or not.
It's under-used because it only works with :sb-related and quickfix commands.
It's semi-impractical because, when the buffer you are switching to is not already displayed somewhere, :sb opens it in a new split.
There's obviously room for improvement, here.
Anyway, you could try something like this:
set switchbuf=useopen,usetab
nnoremap <C-j> :sbnext<CR>
or entirely stop using tabs as they are not designed and adapted to work how you want them to work.
This should work
:map <C-J> <Esc>:tabnext<CR>
This will present a numbered list and required number can be entered to access the required buffer
:nnoremap <C-J> :buffers<CR>:buffer<Space>
I am using project and minibufexpl(mbx) with my vim.
The problem is using <C-6>, the buffer only toggles between last two open buffer, and not the all buffers open.
I checked vim's wiki but it says about listing the buffer and then selecting them manually i.e. map for :ls and :b. Not much helpful.
Though, I can move through all the open buffers using mbx's way, (go to mbx window and keep pressing arrow), a like alternative would have been helpful if it can span through all open buffers.
Any help please?
The simplest solution to your problem seems to be to use Vim's built-in :bn and :bN.
See :help buffers.
I've tested this in vim 7.3 on a Linux installation.
To have Vim insert a character sequence instead of doing the action, prefix it with Ctrl+v or Ctrl+q (in Windows). So to get the map sequence for Ctrl+right arrow press Crtl+v, then Ctrl+right arrow to get Vim to insert ^[[1;5C, similarly ^[[1;5D for Ctrl+left arrow.
You can then add the following to your .vimrc file to cycle through all buffers by pressing Ctrl+right arrow or Ctrl+left arrow:
nmap ^[[1;5C :bn^M
nmap ^[[1;5D :bN^M
nmap does the mapping only for normal mode. The ^M means Ctrl+v, then <return>.
I have a lot of buffers open and to switch between then I Ctrl+w and then Ctrl+[movement key]. Is there a better way? Because this way when I've to do more than one movement I end up having to press 4 keys.
If you want to move between windows, you always can map Ctrl-W, H/J/K/L to anything you want:
map <C-h> <C-w>h
map <C-j> <C-w>j
map <C-k> <C-w>k
map <C-l> <C-w>l
If you want to move between buffers, you can use :buffer command, print a part of the file name you want to go to: pressing Tab will cycle through all files that contains this part in the names. E.g you want to show buffer with filename 'some_long_c_file.c' and you know you don't have any other opened file whose name ends with 'file.c': just type :buffer file.c and press Tab (or even 'ile.c' or shorter), this will complete it to 'some_long_c_file.c'.
For quick switching between the two last buffers, use Ctrl-^
The best way I've found to do this is to install bufexplorer.vim. That let's you quickly switch to a screen in which you can select any buffer. You can also close buffers etc..
Here's a screenshot of my vim with bufexplorer open showing it's help screen:
For me the solution was two-fold:
1) Use unimpaired - so ]b and [b
2) map :b# to switch to previous buffer. I used map <cr> :b#<cr> . (so enter key would toggle back and forth between two open buffers).
Recently I found out that I'm "using tabs incorrectly" in Vim. I've been trying to just use buffers in Vim since, assisted through MiniBufExplorer, but I find it painful because of how many keystrokes it takes to change buffers from normal mode. With tabs, I can just do gt or gT to hop back and forth between tabs in normal mode, and I can also do NUMBERgt to go to a specific tab.
With buffers, I either have to enter command mode with :bn, :bp, or with MiniBufExplorer, use Ctrl + k or Ctrl + Up to hop up to the buffer window, scroll left or right with h and l and then hit Enter to select the buffer I want. Or I can do something involving a leader sequence, but it always requires removing multiple fingers away from home row. That's a real pain.
How can I get something equivalent switching tabs in normal mode to switch buffers in normal mode, so I can do something like gn/gp for :bn/:bp and NUMBERgn for :buf NUMBER?
Add this to your .vimrc
map gn :bnext<cr>
map gp :bprevious<cr>
map gd :bdelete<cr>
" I personally use <leader>
map <leader>n :bnext<cr>
map <leader>p :bprevious<cr>
map <leader>d :bdelete<cr>
Note that you are remapping gp and gd, but maybe you don't care about that (:help gp, :help gd).
For more information on how to map key strokes see :help map-overview and :help map.txt.
Btw, I personally use <leader> instead of g in the mapping. My <leader> is set to ;. This puts my <leader> key on the home row which makes me willing to map all kinds of stuff using <leader>. :help mapleader if you want to change your <leader> key.
The way I usually switch between buffers is to use the :buffer command with the built-in autocompletion, e.g. :b prof<Tab> to switch to folder/path/LoginProfileFactory.php.
You can just start typing any part of the file name of the buffer you need, which is nice.
Less often, I actually remember the numbers of the buffers I want and I use something like :b 3 or :3b.
I see you mention you don't like :buf 3 though, so Rumple Stiltskin has an alternative to the :3b style that you may prefer.
{count}CTRL-^ switches to the count numbered buffer.
I have the following lines in .vimrc:
nnoremap <silent> <tab> :if &modifiable && !&readonly && &modified <CR> :write<CR> :endif<CR>:bnext<CR>
nnoremap <silent> <s-tab> :if &modifiable && !&readonly && &modified <CR> :write<CR> :endif<CR>:bprevious<CR>
Now a Tab let you go to the next buffer and a Shift-Tab to the previous.
This is based on Nick Knowlson's answer, but I wanted to expand on my comment there ...
Type :b <Tab> (note the space), then cycle through the open buffers with Tab or ← / →.
... which gets us closer to the Ctrl + Tab in all the other editors and browsers I use.
It's actually even better in some ways, you can then go backwards and forwards with ← / → arrows. It avoids the thumb + finger fu to type Ctrl + Shift + Tab to go backwards through the tabs in editors and browsers.
N.B. Shift + Tab just does the same as Tab
This is then actually something like Win + Tab in Windows 10, where once you first open up the window and you can then move around using the arrow keys.
Edit: I have two further tricks that I picked up for using buffers:
From this answer I have this in my .vimrc:
nnoremap <leader>bb :buffers<cr>:b<space>
it opens the :ls / :buffers command and pre-types the :b so that you just have to type the buffer number as you'll see a list with all the buffers and their numbers.
I also have
nnoremap <leader><tab> :b#<cr>
which toggles between the current and most recently used buffers, it's a bit like doing cd - when switching back and forth between directories
I use the plugin unimpaired.vim
it defines mappings [b and ]b that jump to the previous and next buffer in the list.
For jumping for a specific buffer the best option I know is the one you mentioned: :b<number>
If you go into another buffer you can came back quickly by typing <c-^>
Expanding on Rumple Stiltskin's answer, if you know that the file you want to get to is in buffer 4, for example, you can get there quickly with
4Ctrl-^
On my UK keyboard, I can actually do 4Ctrl-6, as explained in
:help CTRL-^
By the way, you can see the buffer numbers with
:buffers
or
:ls
I use LustyExplorer: I hit <leader>b to open a list of buffers then a couple of letters from the name of the buffer I want to open then enter. Easy.
But, you are not "using tabs incorrectly", you are using tabs the way you want. If it worked for you why go through the pain of unlearning your way to learn "the right way"?
I use F9 and F10 to move between the previous/next buffer with this mapping:
map <F9> :bprevious<CR>
map <F10> :bnext<CR>
For me this is the fastest way to switch buffers.
fzf.vim is another fast way to changes buffers using fuzzy matching. This plug-in ships with the default command:
:Buffers
which opens the list of all open buffers similar to :ls but a buffer can be (fuzzy) searched and selected.
Opening the buffer in the current window is through enter, but can can also be opened in a new split (h or v) or tab using ^X ^V or ^T respectively.
Noteworthy is also:
:Lines
Which allows to search through the content of all open buffers. This can be handy if you forget the name of a buffer but you know what it should contain.
Here is my solution:
" `<leader><Tab>` - next buffer;
nnoremap <silent> <leader><Tab> :bnext<CR>
" `<leader><S-Tab>` - previous buffer;
nnoremap <silent> <leader><S-Tab> :bprevious<CR>
" `_bufferNumber_ + <Tab>` - go exact the buffer number;
nnoremap <silent> <Tab> <C-^>
By the way, I use 'buftabline' plugin and set let g:buftabline_numbers = 1 to spread my buffer on the tabline.
I make it easier for myself:
In .vimrc :
nnoremap <leader>bf :buffers<CR>:buffer "<- Last spaces is necessary
For example, in normal mode, say your leader key is \(default it is), type \bf, then you have a list of opened buffers, type number of buffer you want and hit enter key.
NOTE: remember that last spaces not necessary at all if you wich type it after :D
Jut like that ;)
More detail:
<C-O> Navigate backward
<C-I> Navigate forward
So there is no need extra remapping, otherwise you remapped them.
I think bufexplorer is a nice plugin to use. <leader>be brings up an interactive buffer explorer that lists all open buffers. You could quickly move through the list and Enter puts you in the selected buffer. Unlike LustyExplorer It has no dependency to ruby.
I prefer navigating between buffers similarly to how I'm navigating between window panes: <alt-h> and <alt-l>. This is to straightforward to set on Mac because <alt>/<option> key binds are bounded to specific characters.
" Buffer navigation
map ˙ :bp<cr>
map ¬ :bn<cr>
map § <c-^>
Here is a good answer that shows how you can see characters maped to <alt-..> combinations