What is your most productive shortcut with Vim?

2018-12-31 16:59发布

I've heard a lot about Vim, both pros and cons. It really seems you should be (as a developer) faster with Vim than with any other editor. I'm using Vim to do some basic stuff and I'm at best 10 times less productive with Vim.

The only two things you should care about when you talk about speed (you may not care enough about them, but you should) are:

  1. Using alternatively left and right hands is the fastest way to use the keyboard.
  2. Never touching the mouse is the second way to be as fast as possible. It takes ages for you to move your hand, grab the mouse, move it, and bring it back to the keyboard (and you often have to look at the keyboard to be sure you returned your hand properly to the right place)

Here are two examples demonstrating why I'm far less productive with Vim.

Copy/Cut & paste. I do it all the time. With all the contemporary editors you press Shift with the left hand, and you move the cursor with your right hand to select text. Then Ctrl+C copies, you move the cursor and Ctrl+V pastes.

With Vim it's horrible:

  • yy to copy one line (you almost never want the whole line!)
  • [number xx]yy to copy xx lines into the buffer. But you never know exactly if you've selected what you wanted. I often have to do [number xx]dd then u to undo!

Another example? Search & replace.

  • In PSPad: Ctrl+f then type what you want you search for, then press Enter.
  • In Vim: /, then type what you want to search for, then if there are some special characters put \ before each special character, then press Enter.

And everything with Vim is like that: it seems I don't know how to handle it the right way.

NB : I've already read the Vim cheat sheet :)

My question is:

What is the way you use Vim that makes you more productive than with a contemporary editor?

标签: vim vi
30条回答
浅入江南
2楼-- · 2018-12-31 17:16

Visual Mode

As several other people have said, visual mode is the answer to your copy/cut & paste problem. Vim gives you 'v', 'V', and C-v. Lower case 'v' in vim is essentially the same as the shift key in notepad. The nice thing is that you don't have to hold it down. You can use any movement technique to navigate efficiently to the starting (or ending) point of your selection. Then hit 'v', and use efficient movement techniques again to navigate to the other end of your selection. Then 'd' or 'y' allows you to cut or copy that selection.

The advantage vim's visual mode has over Jim Dennis's description of cut/copy/paste in vi is that you don't have to get the location exactly right. Sometimes it's more efficient to use a quick movement to get to the general vicinity of where you want to go and then refine that with other movements than to think up a more complex single movement command that gets you exactly where you want to go.

The downside to using visual mode extensively in this manner is that it can become a crutch that you use all the time which prevents you from learning new vi(m) commands that might allow you to do things more efficiently. However, if you are very proactive about learning new aspects of vi(m), then this probably won't affect you much.

I'll also re-emphasize that the visual line and visual block modes give you variations on this same theme that can be very powerful...especially the visual block mode.

On Efficient Use of the Keyboard

I also disagree with your assertion that alternating hands is the fastest way to use the keyboard. It has an element of truth in it. Speaking very generally, repeated use of the same thing is slow. This most significant example of this principle is that consecutive keystrokes typed with the same finger are very slow. Your assertion probably stems from the natural tendency to use the s/finger/hand/ transformation on this pattern. To some extent it's correct, but at the extremely high end of the efficiency spectrum it's incorrect.

Just ask any pianist. Ask them whether it's faster to play a succession of a few notes alternating hands or using consecutive fingers of a single hand in sequence. The fastest way to type 4 keystrokes is not to alternate hands, but to type them with 4 fingers of the same hand in either ascending or descending order (call this a "run"). This should be self-evident once you've considered this possibility.

The more difficult problem is optimizing for this. It's pretty easy to optimize for absolute distance on the keyboard. Vim does that. It's much harder to optimize at the "run" level, but vi(m) with it's modal editing gives you a better chance at being able to do it than any non-modal approach (ahem, emacs) ever could.

On Emacs

Lest the emacs zealots completely disregard my whole post on account of that last parenthetical comment, I feel I must describe the root of the difference between the emacs and vim religions. I've never spoken up in the editor wars and I probably won't do it again, but I've never heard anyone describe the differences this way, so here it goes. The difference is the following tradeoff:

Vim gives you unmatched raw text editing efficiency Emacs gives you unmatched ability to customize and program the editor

The blind vim zealots will claim that vim has a scripting language. But it's an obscure, ad-hoc language that was designed to serve the editor. Emacs has Lisp! Enough said. If you don't appreciate the significance of those last two sentences or have a desire to learn enough about functional programming and Lisp to develop that appreciation, then you should use vim.

The emacs zealots will claim that emacs has viper mode, and so it is a superset of vim. But viper mode isn't standard. My understanding is that viper mode is not used by the majority of emacs users. Since it's not the default, most emacs users probably don't develop a true appreciation for the benefits of the modal paradigm.

In my opinion these differences are orthogonal. I believe the benefits of vim and emacs as I have stated them are both valid. This means that the ultimate editor doesn't exist yet. It's probably true that emacs would be the easiest platform on which to base the ultimate editor. But modal editing is not entrenched in the emacs mindset. The emacs community could move that way in the future, but that doesn't seem very likely.

So if you want raw editing efficiency, use vim. If you want the ultimate environment for scripting and programming your editor use emacs. If you want some of both with an emphasis on programmability, use emacs with viper mode (or program your own mode). If you want the best of both worlds, you're out of luck for now.

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看风景的人
3楼-- · 2018-12-31 17:16

You asked about productive shortcuts, but I think your real question is: Is vim worth it? The answer to this stackoverflow question is -> "Yes"

You must have noticed two things. Vim is powerful, and vim is hard to learn. Much of it's power lies in it's expandability and endless combination of commands. Don't feel overwhelmed. Go slow. One command, one plugin at a time. Don't overdo it.

All that investment you put into vim will pay back a thousand fold. You're going to be inside a text editor for many, many hours before you die. Vim will be your companion.

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旧人旧事旧时光
4楼-- · 2018-12-31 17:16

Some productivity tips:

Smart movements

  • * and # search for the word under the cursor forward/backward.
  • w to the next word
  • W to the next space-separated word
  • b / e to the begin/end of the current word. (B / E for space separated only)
  • gg / G jump to the begin/end of the file.
  • % jump to the matching { .. } or ( .. ), etc..
  • { / } jump to next paragraph.
  • '. jump back to last edited line.
  • g; jump back to last edited position.

Quick editing commands

  • I insert at the begin.
  • A append to end.
  • o / O open a new line after/before the current.
  • v / V / Ctrl+V visual mode (to select text!)
  • Shift+R replace text
  • C change remaining part of line.

Combining commands

Most commands accept a amount and direction, for example:

  • cW = change till end of word
  • 3cW = change 3 words
  • BcW = to begin of full word, change full word
  • ciW = change inner word.
  • ci" = change inner between ".."
  • ci( = change text between ( .. )
  • ci< = change text between < .. > (needs set matchpairs+=<:> in vimrc)
  • 4dd = delete 4 lines
  • 3x = delete 3 characters.
  • 3s = substitute 3 characters.

Useful programmer commands

  • r replace one character (e.g. rd replaces the current char with d).
  • ~ changes case.
  • J joins two lines
  • Ctrl+A / Ctrl+X increments/decrements a number.
  • . repeat last command (a simple macro)
  • == fix line indent
  • > indent block (in visual mode)
  • < unindent block (in visual mode)

Macro recording

  • Press q[ key ] to start recording.
  • Then hit q to stop recording.
  • The macro can be played with @[ key ].

By using very specific commands and movements, VIM can replay those exact actions for the next lines. (e.g. A for append-to-end, b / e to move the cursor to the begin or end of a word respectively)

Example of well built settings

# reset to vim-defaults
if &compatible          # only if not set before:
  set nocompatible      # use vim-defaults instead of vi-defaults (easier, more user friendly)
endif

# display settings
set background=dark     # enable for dark terminals
set nowrap              # dont wrap lines
set scrolloff=2         # 2 lines above/below cursor when scrolling
set number              # show line numbers
set showmatch           # show matching bracket (briefly jump)
set showmode            # show mode in status bar (insert/replace/...)
set showcmd             # show typed command in status bar
set ruler               # show cursor position in status bar
set title               # show file in titlebar
set wildmenu            # completion with menu
set wildignore=*.o,*.obj,*.bak,*.exe,*.py[co],*.swp,*~,*.pyc,.svn
set laststatus=2        # use 2 lines for the status bar
set matchtime=2         # show matching bracket for 0.2 seconds
set matchpairs+=<:>     # specially for html

# editor settings
set esckeys             # map missed escape sequences (enables keypad keys)
set ignorecase          # case insensitive searching
set smartcase           # but become case sensitive if you type uppercase characters
set smartindent         # smart auto indenting
set smarttab            # smart tab handling for indenting
set magic               # change the way backslashes are used in search patterns
set bs=indent,eol,start # Allow backspacing over everything in insert mode

set tabstop=4           # number of spaces a tab counts for
set shiftwidth=4        # spaces for autoindents
#set expandtab           # turn a tabs into spaces

set fileformat=unix     # file mode is unix
#set fileformats=unix,dos    # only detect unix file format, displays that ^M with dos files

# system settings
set lazyredraw          # no redraws in macros
set confirm             # get a dialog when :q, :w, or :wq fails
set nobackup            # no backup~ files.
set viminfo='20,\"500   # remember copy registers after quitting in the .viminfo file -- 20 jump links, regs up to 500 lines'
set hidden              # remember undo after quitting
set history=50          # keep 50 lines of command history
set mouse=v             # use mouse in visual mode (not normal,insert,command,help mode


# color settings (if terminal/gui supports it)
if &t_Co > 2 || has("gui_running")
  syntax on          # enable colors
  set hlsearch       # highlight search (very useful!)
  set incsearch      # search incremently (search while typing)
endif

# paste mode toggle (needed when using autoindent/smartindent)
map <F10> :set paste<CR>
map <F11> :set nopaste<CR>
imap <F10> <C-O>:set paste<CR>
imap <F11> <nop>
set pastetoggle=<F11>

# Use of the filetype plugins, auto completion and indentation support
filetype plugin indent on

# file type specific settings
if has("autocmd")
  # For debugging
  #set verbose=9

  # if bash is sh.
  let bash_is_sh=1

  # change to directory of current file automatically
  autocmd BufEnter * lcd %:p:h

  # Put these in an autocmd group, so that we can delete them easily.
  augroup mysettings
    au FileType xslt,xml,css,html,xhtml,javascript,sh,config,c,cpp,docbook set smartindent shiftwidth=2 softtabstop=2 expandtab
    au FileType tex set wrap shiftwidth=2 softtabstop=2 expandtab

    # Confirm to PEP8
    au FileType python set tabstop=4 softtabstop=4 expandtab shiftwidth=4 cinwords=if,elif,else,for,while,try,except,finally,def,class
  augroup END

  augroup perl
    # reset (disable previous 'augroup perl' settings)
    au!  

    au BufReadPre,BufNewFile
    \ *.pl,*.pm
    \ set formatoptions=croq smartindent shiftwidth=2 softtabstop=2 cindent cinkeys='0{,0},!^F,o,O,e' " tags=./tags,tags,~/devel/tags,~/devel/C
    # formatoption:
    #   t - wrap text using textwidth
    #   c - wrap comments using textwidth (and auto insert comment leader)
    #   r - auto insert comment leader when pressing <return> in insert mode
    #   o - auto insert comment leader when pressing 'o' or 'O'.
    #   q - allow formatting of comments with "gq"
    #   a - auto formatting for paragraphs
    #   n - auto wrap numbered lists
    #   
  augroup END


  # Always jump to the last known cursor position. 
  # Don't do it when the position is invalid or when inside
  # an event handler (happens when dropping a file on gvim). 
  autocmd BufReadPost * 
    \ if line("'\"") > 0 && line("'\"") <= line("$") | 
    \   exe "normal g`\"" | 
    \ endif 

endif # has("autocmd")

The settings can be stored in ~/.vimrc, or system-wide in /etc/vimrc.local and then by read from the /etc/vimrc file using:

source /etc/vimrc.local

(you'll have to replace the # comment character with " to make it work in VIM, I wanted to give proper syntax highlighting here).

The commands I've listed here are pretty basic, and the main ones I use so far. They already make me quite more productive, without having to know all the fancy stuff.

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只靠听说
5楼-- · 2018-12-31 17:16

gi

Go to last edited location (very useful if you performed some searching and than want go back to edit)

^P and ^N

Complete previous (^P) or next (^N) text.

^O and ^I

Go to previous (^O - "O" for old) location or to the next (^I - "I" just near to "O"). When you perform searches, edit files etc., you can navigate through these "jumps" forward and back.

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长期被迫恋爱
6楼-- · 2018-12-31 17:17

Spend 30 mins doing the vim tutorial (run vimtutor instead of vim in terminal). You will learn the basic movements, and some keystrokes, this will make you at least as productive with vim as with the text editor you used before. After that, well, read Jim Dennis' answer again :)

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时光乱了年华
7楼-- · 2018-12-31 17:17

Automatic indentation:

gg (go to start of document)
= (indent time!)
shift-g (go to end of document)

You'll need 'filetype plugin indent on' in your .vimrc file, and probably appropriate 'shiftwidth' and 'expandtab' settings.

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