Using alt+backspace key in vim command line to delete by words - vim

Is there a way to use the alt+backspace in vim command line? It gets unruly when having to backspace /very/long/file/path individually instead of using alt+backspace to delete by words.

try using instead <c-w> (that is ctrl+w) to erase words or <c-u> (ctrl+u) to delete lines.

http://vim.wikia.com/wiki/Map_Ctrl-Backspace_to_delete_previous_word
:imap <C-BS> <C-W>
sets ctrl backspace, i have to look at how to do alt

If you are at the end of the path you can hit B followed by a dW (case matters). This will jump you to the beginning of the word (ignoring the slashes) and subsequently delete the word (again ignoring the slashes).
Hope this helps.

Vim is unable to receive alt input. skeept's answer seems to be the best alternative.
See this answer:
The Alt/Meta key is problematic in Vim and most terminals, see this answer of mine for an overview of the situation (the situation is the same for Meta and Alt).
In short, Vim doesn't receive Alt at all: hitting Alt+Backspace is exactly the same as hitting Backspace.
Anyway, it will be better for you in the long term to learn and get accustomed to Vim's default key-mappings.

The answer marked as right does not correspond to the behaviour in most UI editors for Alt + BackSpace. The vim shortcut which correspond to this behaviour is db - aka delete back ( a word ?! ), dw would delete word forth, which would be the (Altr or Ctrl ) Del shortcut in most ui programs.
Those work basically the same way as the w - move the cursor to the words beginnings and b, move the cursor back to the words beginning ...
Disclaimer: I have used for more than 10 years my .vimrc. , which might have some freaky twist which changes the default behaviour as well ...

Sure, it's as easy as:
if has('gui_running')
imap <M-BS> <C-W>
else
imap <Esc><BS> <C-W>
endif
The trick here is to know, given a hypothetical foo key, that after pressing a Alt+foo combination, many terminals will send an Escape code followed by foo. Apparently there are exceptions — some terminals do send something that vim can recognize as Alt. But if a imap <M-BS> <C-W> mapping doesn't work for you in terminal, then most likely your terminal sends an Esc instead, so the combination imap <Esc><BS> <C-W> should work for you.
You can read more about that in vim documentation by evaluating :help map-alt-keys

x then w should backspace per word as well.
d then w will also delete the current word the cursor is on.

Related

Mapping Alt-j and Alt-k in vim [duplicate]

I'm running Vim on a gnome terminal. But the alt key mappings are not working. For example:
:imap <A-i> <Esc>
It works fine in GVim. But when I run the same command with Vim in the gnome terminal it does nothing.
I'm using Windows 7, The problem is with the terminal, right?
The problem
There are two ways for a terminal emulator to send an Alt key (usually called a Meta key as actual terminals didn't have Alt). It can either send 8 bit characters and set the high bit when Alt is used, or it can use escape sequences, sending Alt-a as <Esc>a. Vim expects to see the 8 bit encoding rather than the escape sequence.
Some terminal emulators such as xterm can be set to use either mode, but Gnome terminal doesn't offer any such setting. To be honest in these days of Unicode editing, the 8-bit encoding is not such a good idea anyway. But escape sequences are not problem free either; they offer no way of distinguishing between <Esc>j meaning Alt-j vs pressing Esc followed by j.
In earlier terminal use, typing Escj was another way to send a Meta on a keyboard without a Meta key, but this doesn't fit well with vi's use of Esc to leave insert mode.
The solution
It is possible to work around this by configuring vim to map the escape sequences to their Alt combinations.
Add this to your .vimrc:
let c='a'
while c <= 'z'
exec "set <A-".c.">=\e".c
exec "imap \e".c." <A-".c.">"
let c = nr2char(1+char2nr(c))
endw
set timeout ttimeoutlen=50
Alt-letter will now be recognised by vi in a terminal as well as by gvim. The timeout settings are used to work around the ambiguity with escape sequences. Esc and j sent within 50ms will be mapped to <A-j>, greater than 50ms will count as separate keys. That should be enough time to distinguish between Meta encoding and hitting two keys.
If you don't like having timout set, which times out for other mapped key sequences (after a second by default), then you can use ttimeout instead. ttimeout applies only to key codes and not other mappings.
set ttimeout ttimeoutlen=50
For Gnome-terminal, use the following instead:
imap ^[i <Esc>
^[i should be typed by pressing Ctrl-v Alt-i
Attention: You need to yank and put in Vim when you want to copy it elsewhere. If you just copy the mapping in an editor like gedit, the mapping will probably be broken.
EDIT here is an example which makes Alt-k add an empty line above the cursor, and Alt-j add an empty line after the current line.
" Alt-j/k to add a blank line
if has('gui_running')
" the following two lines do not work in vim, but work in Gvim
nnoremap <silent><A-j> :set paste<CR>m`o<Esc>``:set nopaste<CR>
nnoremap <silent><A-k> :set paste<CR>m`O<Esc>``:set nopaste<CR>
else
" these two work in vim
" shrtcut with alt key: press Ctrl-v then Alt-k
" ATTENTION: the following two lines should not be
" edited under other editors like gedit. ^[k and ^[j will be broken!
nnoremap ^[k :set paste<CR>m`O<Esc>``:set nopaste<CR>
nnoremap ^[j :set paste<CR>m`o<Esc>``:set nopaste<CR>
endif
Try
<m-i>
Or, if typing alti inserts a character (like in my case, it inserts a carret: ˆ) just map to that character:
:inoremap ˆ <esc>
Be careful, because this one wouldn't work (at least in my system, MacOS 10.6). The caret waits for a letter, because it's not exactly a caret, it is a circumflex.
It may be that the shortcuts are actually from the Gnome Desktop. Try looking at the Gnome Keyboard Shortcuts tool (System menu, Preferences, Keyboard Shortcuts), which lets you view and modify the shortcuts defined on Gnome Desktop. If the key combination is assigned to a function on Gnome Desktop, then remove it and then that key combo should filter down to Vim properly.
Or you may be right that it is a problem of the terminal. Not all terminals support all key combos. Your problem may be the one described in the Vim help docs at :h map-alt-keys. The docs provide a workaround, but not a very good one.
The same thing happens to me. I searched on Google with "gnome terminal alt key", and found that someone asked almost the same question: "How to disable the alt-hotkey behavior on gnome terminal?" in the first link found. (The second link is just this question)
So, maybe you can try that:
Edit > Keyboard Shortcuts, and uncheck "Enable menu access keys"
Take a look at section 1.10 of http://vimdoc.sourceforge.net/htmldoc/map.html. It seems to indicate that gnome-terminal automatically escapes the Alt modifier, so that it doesn't switch the byte sent in the way that Vim is expecting. The document seems to indicate that there isn't really a way around this except for using a different terminal (such as xterm).
This is certainly frustrating because so far as I can tell Linux machines are also incapable of using the D (Mac's Command or Linux's Super) bindings, so at least as far as the terminal goes, we are limited to Shift and Ctrl modifiers, which is frustrating if we want to ensure that we can use all the commands we use in Gvim on terminal Vim (at least without switching terminals, towards which I'm perhaps overly stubborn - gnome-terminal is just so much prettier). I've been looking for a way around this but have been unable to find anything.

vim DelimitMate

With the DelimitMate, it auto generates the closing parentheses. When I'm finished typing inside the parenthesis, what key strokes do I press to quickly go to the right of the closing parenthesis? (Right now I have to manually press ESC then 'a')
The idea of these auto-closing plugins (like the original feature implementation found in IDEs like Eclipse) is that you just type the closing character to go over it. The plugin should detect this situation and instead of inserting the character jumps over the existing, auto-inserted one.
If that's not working for you, there are several plugin alternatives on offer. The Vim Tips Wiki has a list of them.
With delimitMate, Shift-tab will jump out of the current delimiter and Control-G g will get you out of nested delimiters. No need to remap anything.
You could try auto-pairs's Fly Mode
eg:
( hello| world )
press ) at |
( hello world )|
If jump incorrect, use <M-b> to do the back insert.
eg:
(hello| world()
press ) at |
(hello world()|
press <M-b>
(hello)| world()
Repository: https://github.com/jiangmiao/auto-pairs
Plugin: http://www.vim.org/scripts/script.php?script_id=3599
add
let g:AutoPairsFlyMode=1
to .vimrc to turn Fly Mode on
You can do a custom map. I guess you want to go to the right of the closing parenthesis while you're in insert mode. Just add to your .vimrc this mapping:
:inoremap <F8> <ESC>f)a
In this way, while your in insert mode and you've finished to write inside the parenthesis, F8 will bring your cursor ad the right of the closing parenthesis.
If you want you can change the mapped key, using another key instead of F8.
As Kent said in the comment a more general solution would be:
:inoremap <F8> <ESC>%%a
Which will work for [ and { brackets.
I kinda agree with Atropo on this one: if you want to stick with DelimitMate then the least disruption to your workflow might be to make a custom imap to get to the other side of the auto inserted character.
Personally I prefer to have more control over where/when the characters are auto-inserted, and how I can navigate around the auto-inserted characters; UltiSnips or SnipMate does that for me. Maybe they're more what you're looking for.
If you typing on a new line, you try A which will append text at the end of the line.
I have autoClose installed. what I am doing currently is ("I" is cursor)
- (xxxxI)
- ( xxxxI )
- ( xxxxIxx )
- text (xxxxI) other text
- text ( xxxxI ) other text
- text ( xxxxIxx ) other text
I just make a mapping, to <esc>%%a then in above case, the cursor will move to (...)I..whatever
it doesn't work for quotes.
A little late to the party, but note that it can be done easily without any custom mappings. In insert mode, you can press <C-O> (a default mapping) to enter a "one shot" normal mode where you can enter a single normal mode command.
So to answer your question, what you could do is <C-O>a.

Case-sensitive keyboard shortcuts

I'd like some map/remap/nmap/etc. commands to be case sensitive, e.g. "<C-I>" vs. "<C-i>".
I checked Google and :help map, but was unable to find this.
It appears you currently can't combine control with case-sensitivity in vim or gvim (I'm using 7.2). I might expect this to be a limitation of terminals for the former, but not the latter.
I tested it by typing this in a buffer:
map <c-i> :echo "c-i"<cr>
map <c-s-i> :echo "c-s-i"<cr>
Yank those lines, then :#" (when executes register " as commands). Verifying the maps with :map <c-i> and <c-s-i> shows the problem: <c-i> is <tab>, and only the last one takes effect, with the shift being ignored.
For alt, <a-i> and <a-s-i> do work as expected in gvim
In terminal vim, those two get mapped to é and É (at least here, check with ":map <a-i>" as above), and typing é/É directly (I use dead keys) does invoke the mapping. Actually doing a-i or a-s-i just enters insert mode.
Of course, non-control and non-alt maps work case-sensitively.
Add S for Shift
<C-S-i>
If you use your Caps Lock, (1) what on earth for?, and (2) you'll have problems. See here if this is your situation.
My bad.
Cannot be done, by design, with printable characters. The approach above does work with F1 et al, such as <C-S-F8>. See this thread for more.
My workaround would be to map it to something entirely different and obscure, and use AutoHotkey or similar to substitute the combination only for the uppercase variant.
Docs say that "CTRL-A and CTRL-a are equivalent".
Relevant part from :help notation
CTRL-{char} {char} typed as a control character; that is, typing {char}
while holding the CTRL key down. The case of {char} does not
matter; thus CTRL-A and CTRL-a are equivalent. But on some
terminals, using the SHIFT key will produce another code,
don't use it then.
(not intended as an answer, but as relevant info for anybody comming from search engine regarding case sensitivity)

How to jump to the next tag in vim help file

I want to learn the vim documentation given in the standard help file. But I am stuck on a navigating issue - I just cannot go to the next tag without having to position the cursor manually. I think you would agree that it is more productive to:
go to the next tag with some
keystroke
press Ctrl-] to read corresponding
topic
press Ctrl-o to return
continue reading initial text
PS. while I was writing this question, I tried some ideas on how to resolve this. I found that searching pipe character with /| is pretty close to what I want. But the tag is surrounded with two pipe '|' characters, so it's still not really optimized to use.
Use the :tn and :tp sequences to navigate between tags.
If you want to look for the next tag on the same help page, try this search:
/|.\{-}|
This means to search for:
The character |
Any characters up to the next |, matching as few as possible (that's what \{-} does).
Another character |
This identifies the tags in the VIM help file.
If you want to browse tags occasionally only, without mapping the search string to keyboard,
/|.*|
also does the trick, which is slightly easier to type in than the suggested
/|.\{-}|
For the case, that the "|" signs for the links in the help file are not visible, you can enable them with
:set conceallevel=0
To establish this setting permanently, please refer to Defining the settings for the vim help file
Well, I don't really see the point. When I want to read everything, I simply use <pagedown> (or <c-f> with some terminals)
" .vim/ftplugin/help/navigate.vim
nnoremap <buffer> <tab> /\*\S\+\*/<cr>zt
?
Or do you mean:
nnoremap <buffer> <tab> /\|\zs\S\{-}\|/<cr><c-]>
?
You could simply remap something like:
nmap ^\ /<Bar><Bslash>zs<Bslash>k<Bslash>+<Bar><CR>
where ^\ is entered as (on my keyboard) Ctrl-V Ctrl-#: choose whatever shortcut you want.
This does a single key search for a | followed by one or more keyword characters and then a |. It puts the cursor on the first keyword character. The and bits are there due to the way map works, see
:help :map-special-chars
As an aside, I imagine that ctrl-t would make more sense than ctrl-o as it's a more direct opposite of ctrl-], but it's up to you. Having said that, ctrl-o will allow you to go back to before the search as well.

Vim / vi Survival Guide

What are the essential vim commands? What does a new-user need to know to keep themselves from getting into trouble? One command per comment, please.
What I find irreplaceable (because it works in vi also, unlike vim's visual mode) are marks. You can mark various spots with m (lower case) and then a letter of your choice (eg x). Then you go elsewhere, and can go back with ``x(backquote letter) to the exact spot, or with'x` (apostrophe letter) to go to the line.
These movements can be used as arguments to commands (yank, delete, etc). For example, you want to delete 10 lines; instead of counting and then moving to the topmost line and entering 10dd, you go to either the start or the end of the block, press mm (mark m), then go to the other end of the block, and press d'm (delete apostrophe m). If you use backquote instead of apostrophe in this example, then the deletion will work character-wise, not line-wise. Try marking in the middle of the line with "mark m", moving to the middle of another line, then entering "d backquote m" and you will see what I mean.
I was very happy the day I learned about using * or # to search, down or up respectively, for the word under the cursor. Make sure to :set incsearch and :set hlsearch first.
I like this QRC!
http://www.fsckin.com/wp-content/uploads/2007/10/vi-vim_cheat_sheet.gif
When you have some repetitive action to take Macros are usually faster than regex.
Just type
q[0-9a-z] in normal mode
Many people use
qq
because it's fast.
Press
q in normal mode
again to stop recording.
Then just type
#[0-9a-z] in normal mode
to repeat what you just recorded.
#q
for the example like above.
Edited to add: you can also repeat the macro. Let's say you programed a macro to jump to the head of a line, insert a tab, and then jump down one line. You then test your macro by typing "#q" to run it once. Then you can repeat the action nine more times by typing "9#q".
:q -> quit
:w -> save
:q! -> quit and don't save
:x -> save and quit
:[number] -> go to line number
G -> go to end of file
dd -> delete line
p -> "put" line
yy -> "copy" line
:s/[searchfor] -> search
I guess those are the basic one to start from
Use the 'J' (J for Join; upper-case) command to delete the newline at the end of a line. You'll find it tricky otherwise.
This recent Vim tutorial from IBM is pretty good
First of all you need to know how to close vi:
ctrl-c : q!
Rest can be found from vimtutor. Launch vimtutor by typing vimtutor at your command line
Although this is a matter of personal preference I've found that one of the essential things to do is to remap Esc to something else.
I find it very uncomfortable to reach for the Esc key to exit insert mode, but the beautiful thing about Vim is that allows key mappings.
I'm currently using the following mapping using Control + S:
inoremap <C-s> <Esc>:w<CR>
This has the advantage of being a key mapping I have already committed to memory and has the added value of saving my work every time I go to normal mode. Yeah, I know it is crazy but I would be hitting the save command that frequently anyway. It's like a bad habit, you know.
" ~/.vimrc
" Turn on line numbering
set nu
" Turn on syntax highlighting
syntax on
" Set 4 space expanding tabs
set tabstop=4
set shiftwidth=4
set softtabstop=4
set expandtab
"turn off line wrapping
set nowrap
" Map CTRL-N to create a new tab
:map <C-n> <ESC>:tabnew<RETURN>
" Map Tab and CTRL-Tab to move between tabs
:map <Tab> <ESC>:tabn<RETURN>
:map <C-Tab> <ESC>:tabp<RETURN>
If you're using vim, the 'u' command (in command mode) will Undo the last command you typed. You can use this command repeatedly to undo mistakes you may have made before saving the file.
See http://www.rayninfo.co.uk/vimtips.html for a great collection of Vim tips, from the basic can't-live-without to very sophisticated stuff that you might never have thought of trying.
Lots of great commands are listed at the Vim Tips Wiki.
It's also good to run the vimtutor when learning these commands
alias vi nedit :)
all humor aside..
for vi WHEN NOT using nedit..
i (switch to insert mode)
a (append = move to end of line and switch to insert mode)
esc (exit insert mode)
dd delete a line
x delete a character
:wq (save and quit)
/ start a search
n find Next
? search backwards..
yy (yank) copy a line to the buffer
pp (paste) paste it here
r (replace a character)
<N> <command> this is a neat - but aggravating feature that lets you type digits and then a command so
5dd will delete 5 lines
but at this point you might as well
- man vi and refresh your memory
While there are LOTS more, I switched from Vi to nedit several years ago, which I find has more features I can use on a regular basis more easily. Tabbed editing, incremental search bar, column select, copy and paste. sort selected lines, search and destroy within selection, whole doc or all open docs..
tear-off drop down menus..
and it supports syntax highlighting for all the languages I use.. (with pattern files I've used a long time over the years. VIM many now be equivalent, but It has to introduce a feature that Nedit doesn't and an easy way to migrate my pattern files before I switch again.
I like the Vim 5.6 Reference Guide, by Bram Moolenaar and Oleg Raisky.
You can directly print it in booklet form, easy to read, I always have it laying around.
It's a tad old, but what are 8 years in Vi's lifespan ?
:set ignorecase smartcase
Makes searching case-insensitive, unless your search includes a capital letter. Not the most indispensable perhaps, but I find myself setting this option any time I'm editing in a new place. It's in any vimrc file I own.
:%!xxd
View the contents of a buffer in hexadecimal. To revert:
:%!xxd -r
My biggest tip: ctrl+q saves the day when you accidentally hit ctrl+s to save the file you are working on
I have this in my vimrc
set number
set relativenumber
This gives me a line numbering system which makes j, k keys really productive.
I use vi very lightly, and I only use the following commands:
a - switch to insert mode (after the cursor)
esc - return to command mode
:wq - save and quit
:q - quit (no save, only without modification)
:q! - force quit (no save, also with modification)
x - delete one character (in command mode)
dd - delete the whole line (in command mode)
I know there are many many more, but those are enough to get you by.
One of my favourite commands is %G which takes to directly to the end of a file. Especially useful in log-files.
How to switch between modes (i to enter insert mode (one of many ways), esc to exit insert mode, colon for command mode) and how to save and exit. (:wq)
Another useful command is to search something: /
e.g. /Mon will search (and in case of vim highlight) any occurences of Mon in your file.
As a couple of other people have already mentioned, vimtutor is the way to go. It will teach you everything you need to know in vim. The one piece of general advice I would give you is to stay out of insert mode as much as possible. There is enormous power in the other modes, it just takes a little bit of practice to get used to it.
i - insert mode (escape to exit)
dd - delete line
shift-y - 'Yank' (copy) line
p - 'Put' (paste) line(s)
shift-v - Visual mode used to select text (tryin 'yanking' this text and 'putting' it somewhere.
ctrl-w n - create new window (you can open a file or start new file here)
ctrl-w v - split existing window vertically
ctrl-n (in insert mode) - autocomplete (if supported)
:! to run a shell command, usually with standard in as the file or a selection (shift-V)
Useful plugins to look at:
* Buffer Explorer - use \be to view files in the buffer (and select to re-open)
NB vi is not vim! vim is rapidly turning into the emacs of the new century. nvi is probably the closest thing to the original vi. Here's a nice hint: "xp" will exchange two characters (try it).
replace 'foo' with 'bar' everywhere in the file
:%s/foo/bar/gc
The real power is in the searching. Here are the essential commands:
/Steve will find the first instance of "Steve" in the text.
n will find the next "Steve" in the text.
:%s//Stephen/g will replace all those instances of "Steve" you just searched for with "Stephen".
Not to promote myself, but I wrote a blog post on this subject. It focuses on the critical parts of Vim for a beginner.
My favorites:
% find matching bracket/brace
* and # next/previous match
gg top of page
G end of the page
<Ctrl-v> Change to visual mode and select column
<Ctrl-a> increase current number by 1
<Ctrl-x> decrease current number by 1
Running macros

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