Vim : nmap NERD-commenter command - vim

I'm using NERD-commenter on vim version 7.4.
I'd like to map <F8> to comment out multi lines with NERD-commenter 's command \cc.
I've checked that typing \cc is well working on blocked area.
The problem is that mapping <F8> to \cc is not working properly.
I've tried following lists in my .vimrc file.
nmap <F8> <leader>cc
nmap <F8> <Leader>cc
nmap <F8> <Plug>NERDComComment
...
How can I fix it?

Related

How can I get the terminal key code in vim

I have an existing .vimrc which was created on macintosh computer and contains mappings like this:
"------------------------------------------------------------
" keyboard shortcuts
"------------------------------------------------------------
nmap <S-Tab> :wincmd W<CR>
nmap <S-q> :bp\|bd #<CR>
nmap « :bp\|bd #<CR>
nmap ¢ :sp<CR>
nmap ¶ :vsp\|wincmd w<CR>
nmap :Q :qa<CR>
nmap :W :wqa<CR>
nmap ≠ :q<CR>
nmap ESC[1;9B 15j
nmap ESC[1;9A 15k
nmap ^? :w<CR>
nmap ø :edit
nmap ESC[1;5B 15j
nmap ESC[1;5A 15k
vmap ESC[1;5B 15j
vmap ESC[1;5A 15k
nmap ^\ :edit
nmap ^] :wincmd w<CR>
nmap <F9> :w<CR>:Make<CR><CR>
imap <F9> <ESC>:w<CR>:Make<CR>
nmap <C-n> :cnext<CR>
nmap <C-p> :cprev<CR>
nmap <F5> :Grep
nmap # g~w w
nmap <F10> :ConqueGdb
nmap ^A :sav %:h/filename
nmap ESC[1;2D :NERDTreeToggle<CR>
nmap ESC[1;2B :sp\|wincmd w<CR>
nmap ESC[1;2C :vsp\|wincmd w<CR>
nmap ESC[1;5D :q<CR>
nmap ESC[1;5F :BuffergatorToggle<CR>
nmap ESC[1;6D w
nmap ESC[1;6B b
Now I have transferred this .vimrc to a new linux computer (debian-based), but half of the shortcuts don't work anymore. I guess thats because the mac interpretes some of the keystrokes differently as compared to the linux computer (both computers do have vim v8.1).
When creating shortcuts, I remember that there was a function in vim which would print out the key codes when you press the keys, however that was about 10 years ago and I don't remember it, and I can't find via google.
To be precise, it was like "press XYZ in vim, then press e.g. CTRL+S, then vim would print the corresponding key code to be used in the mappings".
How can I do this now, in order to make those shortcuts work on linux also?
You're looking for :help i_CTRL-V:
For special keys, the terminal code is inserted.
For example, in my Gnome Terminal pressing <C-V><Right> gives ^[OC and <C-V><F12> gives ^[[24~.
In general, you should prefer Vim's key-notation whenever possible. If you do need to insert specific escape codes and need to support multiple platforms with a single ~/.vimrc, you can wrap the mapping definitions in conditions like if has('mac') or if $TERM ==# 'screen256-color'.

How do I debug a non-functioning keymap in Vim?

I ask this question generally, but I will put it in terms of the specific problem I'm having.
I'm using the vim-lawrencium plugin for a project under Mercurial source control. I use the :Hgstatus command to open the status buffer.
The status buffer comes with some nice keymaps to make it easy to add files to the commit, look at diffs, and finalize the commit.
nnoremap <buffer> <silent> <cr> :Hgstatusedit<cr>
nnoremap <buffer> <silent> <C-N> :call search('^[MARC\!\?I ]\s.', 'We')<cr>
nnoremap <buffer> <silent> <C-P> :call search('^[MARC\!\?I ]\s.', 'Wbe')<cr>
nnoremap <buffer> <silent> <C-D> :Hgstatustabdiff<cr>
nnoremap <buffer> <silent> <C-V> :Hgstatusvdiff<cr>
nnoremap <buffer> <silent> <C-U> :Hgstatusdiffsum<cr>
nnoremap <buffer> <silent> <C-H> :Hgstatusvdiffsum<cr>
nnoremap <buffer> <silent> <C-A> :Hgstatusaddremove<cr>
nnoremap <buffer> <silent> <C-S> :Hgstatuscommit<cr>
nnoremap <buffer> <silent> <C-R> :Hgstatusrefresh<cr>
nnoremap <buffer> <silent> q :bdelete!<cr>
Most of these seem to work. I've successfully tried diffing, adding, and q to close the status, but the <C-S> shortcut doesn't work at all. I can manually run the :Hgstatuscommit command it's mapped to. I've also looked at :map to verify the key is actually mapped for that buffer, and it does show up in the list.
What is my next step in debugging this? I want to fix this specific problem, but I also want to know how to fix it in the event I run across broken shortcuts in the future. I'm new to Vim, so I'm at a bit of a loss at this point.
UPDATE: Output of :verbose map <C-S>
v <C-S> *#:Hgstatuscommit<CR>
Last set from ~/.spf13-vim-3/.vim/bundle/vim-lawrencium/plugin/lawrencium.vim
n <C-S> *#:Hgstatuscommit<CR>
Last set from ~/.spf13-vim-3/.vim/bundle/vim-lawrencium/plugin/lawrencium.vim
SOLUTION: Turned out the problem was that my shell was intercepting Ctrl-S and it was never getting to Vim.
I added a Vim alias to my .zshrc to fix:
alias vim="stty stop '' -ixoff ; vim"
ttyctl -f
Found the fix on the Vim Wikia which also has a solution for bash shells.
Software Flow Control
If you are using using a terminal then it is often the case that <c-s> is being used for terminal's software flow control (XON/XOFF). Which makes <c-s> a trickier key to map.
Turn off flow control by adding the following to some startup script (e.g. ~/.bash_profile or ~/.bashrc):
stty -ixon
If you have frozen your terminal then you can unfreeze it by pressing <c-q>.
Generic map debuging
You can debug pretty much any custom vim mapping via the following command:
:verbose map
This will list out each key/chord ({lhs}) maps to what command ({rhs}), mode, and file the mapping was sourced from. For more information on this listing see :h map-listing and :h :map-verbose.
We can filter this list in a few ways:
Supplying a mode. e.g. :verbose nmap for normal mode and :verbose imap for insert mode.
Proving the key we want to query for. e.g :verbose nmap <c-s>
Can also see buffer specific mappings by adding <buffer>. e.g. :verbose nmap <buffer> <c-s>
So for your question the best way to debug what your mapping is set to would be to run the following query:
:verbose nmap <buffer> <c-s>
Note: Vim's native command are not listed via :verbose map. The best way to find one of Vim's native commands is to help. See :h for more.
First, check that <C-S> still mapped to :Hgstatuscommit
map <C-S>
Hgstatuscommit calls s:HgStatus_Commit. Open its definition on line 1134 and put some debugging print outs:
echom a:linestart
echom a:lineend
echom a:bang
echom a:vertical
After using the mapping, check :messages.
I’d suspect that <C-S> is mapped to something else. You can use :map
<C-S> to check how (or if) its mapping is configured. Even better, you can
add the prefix to see where the mapping was set from, e.g., when I run
:verbose map <C-L>, the following is displayed:
<C-L> * :noh<CR><C-L>
Last set from ~/.vimrc
By contrast, I haven’t set a mapping for <C-S> so when I run, :map <C-S>,
I get:
No mapping found
Prepending verbose to a command is a useful general debugging technique as it can show where any Vim option was set, e.g., :verbose set background? shows what the background option is currently set to and which Vim configuration file it was set in:
background=dark
Last set from ~/.vimrc

Vim map failed unless reload .vimrc

I want to do the following maps in my .vimrc.local
```
inoremap <C-H> <Left>
nnoremap <C-H> <C-W><C-H>
inoremap <C-J> <Down>
inoremap <C-K> <Up>
inoremap <C-L> <Right>
```
When I restart my vim, the fist two mapping failed, and the last three commands succeeded. However, when I source ~/.vimrc.local, then all the five mapping methods are OK. That means, I need to load my .vimrc.local myself.
I've already write source ~/.vimrc.local in my .vimrc . And if I source ~/.vimrc rather than .vimrc.local, it works as well.
What's wrong with my mapping? Is there any conflict? I searched in my .vimrc and .vimrc.local, but didn't find conflicts.
I'm using OS X 10.9 and MacVim Snapshot 71, and the main .vimrc from spf13. There are my .vimrc and .vimrc.local.
How can I do the mapping without manually reload .vimrc?
Thanks!

Vim execute code on remapping in vimrc

I have created the following mapping in my vimrc file:
noremap <C-p> ! firefox -new-tab http://php.net/<cword><C-m>
The problem is that it proceeds to delete the line under the cursor.
How would I make this mapping work correctly?
If I understood what you're trying to do the following should work:
nmap <c-p> :!firefox -new-tab http://php.net/<c-r>=expand('<cword>')<CR><CR>
See docs for further information.
You are using noremap which means that it triggers:
in normal mode
in visual mode
in operator-pending mode.
You should use nnoremap or xnoremap instead. Also, note that ! is a shortcut for :.! in normal mode (acts on current line) and for :'<,'>! in visual mode (acts on current visually-selected lines). If you don't want that:
nnoremap <c-p> :!firefox ...
xnoremap <c-p> :<c-u>!firefox ...

vim : <silent> nmap

In vim I have this nmap
nmap <silent> ,mu : marks ABCDEFGHIJKLMNOPQRSTUVWXYZ<CR>
If I don´t have Upper marks and try ,mu I get
E283: No marks matching "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
why don't show the Error output ?
Try
nnoremap <silent> ,mu :execute "try\nmarks ABCDEFGHIJKLMNOPQRSTUVWXYZ\ncatch /\\V\\^Vim(marks):E283:/\nendtry"<CR>
By the way, is there a reason for writing :nmap instead of :nnoremap? You should not do this if you don't have a reason unless you want to run in the situation where you can't predict what will be the result of adding another mapping (directly to vimrc or by installing a plugin).
Edit (sehe)
To make things more readable, I'd suggest using a snippet like this in your $MYVIMRC:
function! ShowGlobalMarks()
try
marks ABCDEFGHIJKLMNOPQRSTUVWXYZ
catch /E283:/
endtry
endfu
nnoremap <silent> ,mu :call ShowGlobalMarks()<CR>

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