Vim cannot rebind Home/End keys - vim

I'd like <Home> to perform g<Home> and have tried
map <Home> g<Home>
noremap <Home> g<Home>
map <Home> g^
noremap <Home> g^
map <home> g<home>
noremap <home> g<home>
map <home> g^
noremap <home> g^
Nothing seems to work, the behavior stays the same. At any point I am able to type g+Home to do the right thing (go to home/end of soft line in wrapped file)
typing Ctrl+VHome yields ^[[1~ (and End yields ^[[4~).

I bound it like this:
noremap <ESC>[1~ g^

Please check my answer to a similar question, Can't map Home button in vimrc, maybe it helps.
In special:
From :h xterm-end-home-keys:
On some systems (at least on FreeBSD with XFree86 3.1.2) the codes that the
<End> and <Home> keys send contain a <Nul> character. To make these keys send
the proper key code, add these lines to your ~/.Xdefaults file:
*VT100.Translations: #override \n\
<Key>Home: string("0x1b") string("[7~") \n\
<Key>End: string("0x1b") string("[8~")
If that doesn't work, you could try :set t_kh=^V^[[1~. If it work you can enclose it on a check of your terminal type.
Additional information can be found at :h terminal options

Related

Different up/down key functions in different modes in vim

I am using following code in my init file :
noremap <Up> gk
noremap! <Up> <C-O>gk
noremap <Down> gj
noremap! <Down> <C-O>gj
(from: http://vim.wikia.com/wiki/Moving_by_screen_lines_instead_of_file_lines)
This is to move the cursor one 'displayed line up' and not to one line up when using up key. Similar for down key.
However, now when I go to command mode and press ':' to insert a command, I cannot use up key to get previous command. Is there any way to get previous commands with up and down keys while using above code for insert mode? Thanks for your help.
Edit: The output of :verbose cmap <Up> is:
<Up> * <C-O>gk
In the Vim configuration file, the lines
noremap! <Up> <C-O>gk
noremap! <Down> <C-O>gj
will affect the Insert mode and Command-line mode. So If you want it to only affect the Insert mode, you can chanage it with
inoremap <Up> <C-O>gk
inoremap <Down> <C-O>gj
You can check the help with :help noremap! to inspect the modes it works.

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!

Toggling line numbers in vimrc doesn't work

I'm new to vim.
I'm using MacVim.
I use
:set number
which shows line numbers.
I've added
set number
to my vimrc, to make show line numbers by default.
My vimrc:
no <down> <Nop>
no <left> <Nop>
no <right> <Nop>
no <up> <Nop>
ino <down> <Nop>
ino <left> <Nop>
ino <right> <Nop>
ino <up> <Nop>
set number
But line numbers don't show up.
Everything in vimrc except set number works fine. What am I doing wrong?
Problem was that I had one .vimrc in the ~/ and one in the ~/.vim/.vimrc.
The one that was in the ~/ was overriding the one in in ~/.vim/.vimrc.
I'd comment but I'm not allowed :(
I usually have had that problem when either the file or the line is corrupted or has Ctrl characters or in someversions of Unix if there was a space in the wrong place
try :set list and make sure there isn't a Tab, missing Line Feed or something
There's a way of viewing the Control Characters that don't display in :set list but can't remember it.
Shove comes to push delete the line and the one above and below. Save and retype it andsee if it fixes it.

How to increment in vim under windows (where CTRL-A does not work...)

While CtrlX works fine in vim under windows, CtrlA selects all (duh).
Is there a way to increment a number with a keystroke under windows?
You can make CtrlA to increment in windows by opening up the 'mswin.vim' file in your vim directory and finding the section that looks like:
" CTRL-A is Select all
noremap <C-A> gggH<C-O>G
inoremap <C-A> <C-O>gg<C-O>gH<C-O>G
cnoremap <C-A> <C-C>gggH<C-O>G
onoremap <C-A> <C-C>gggH<C-O>G
snoremap <C-A> <C-C>gggH<C-O>G
xnoremap <C-A> <C-C>ggVG
Comment out all of these lines as follows:
" CTRL-A is Select all
"noremap <C-A> gggH<C-O>G
"inoremap <C-A> <C-O>gg<C-O>gH<C-O>G
"cnoremap <C-A> <C-C>gggH<C-O>G
"onoremap <C-A> <C-C>gggH<C-O>G
"snoremap <C-A> <C-C>gggH<C-O>G
"xnoremap <C-A> <C-C>ggVG
and the CtrlA keystroke will increment.
This is a pretty nice option when your keyboard doesn't have a real number pad.
Try Ctrl-NumPad + ?
(from here)
I realize that this is an old question, but I ran across another option today based on the following question. Making gvim act like it does on linux will allow CTRL-A to work as you expect it to:
how to make gvim on windows behave exacly like linux console vim?
There is a section of the _vimrc that has the following items. These cause many of the control characters to act like they do on Windows.
set nocompatible
source $VIMRUNTIME/vimrc_example.vim
source $VIMRUNTIME/mswin.vim
behave mswin
I commented out (with ") the mswin lines and the set nocompatible line. From there, I added set compatible. This causes gvim to act like it does on linux. Thus, mine looks something like:
set compatible
source $VIMRUNTIME/vimrc_example.vim
"set nocompatible
"source $VIMRUNTIME/mswin.vim
"behave mswin
I just learned this trick today, so if I'm not completely correct in my information, please let me know.
I modified TMealy's solution so that CtrlA still selects all (I find this useful), while CtrlI increments (also useful).
noremap <C-I> <C-A>
" CTRL-A is Select all
noremap <C-A> gggH<C-O>G
inoremap <C-A> <C-O>gg<C-O>gH<C-O>G
cnoremap <C-A> <C-C>gggH<C-O>G
onoremap <C-A> <C-C>gggH<C-O>G
snoremap <C-A> <C-C>gggH<C-O>G
xnoremap <C-A> <C-C>ggVG
A similar problem occurs under GNU/Linux when using Vim with mswin.vim.
Remapping Alt+X to Ctrl+A prior to evoking mswin.vim solved my issue.
execute "set <A-x>=\ex"
noremap <A-x> <C-A>
source $VIMRUNTIME/mswin.vim
behave mswin
Now, Alt+X and Ctrl+X respectively increase and decrease numbers in Vim.
Mapping to Alt key combinations is often not evident in Vim; read more about this here.
I am using cygwin terminal + screen, so <c-a> is captured by the terminal multiplexer. I used this mapping:
:noremap <c-i> <c-a>
It seems that the CtrlA got mapped somewhere in startup.
As suggested before, use:
unmap <c-x>
I would use unmap, not nunmap.

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