Imagine you need to change a few last letters in a word.
From
.. visualizing a graph?_
(_ denotes where the cursor is, mode:normal)
you need to arrive at
.. visualize| a graph?
(| denotes the cursor, mode:insert)
How would you do this?
(please suggest how would you really do this, not the "super-doper" way nobody uses)
I am asking, because I do this insanely inefficiently:
type b until reach _visualizing a graph?,
followed by e (visualizinG a graph?),
followed by x to remove g under cursor,
followed by few Shift+x to remove what is before the cursor,
and, finally, i switch into the insert mode and type e.
With given example, I would do:
Tzcwe
If there are just a few words between the cursor and where I want to go, I will use CTRL+left as many times as needed plus CTRL+right once and <bs> 3 times. I may also use the mouse. It's not that different from what you use, except I don't leave the insert mode for simple moves. Note this is exactly what I use when I type messages in my browser (I've never been conquered by vimperator & co).
I'm aware of <esc>gegege...3<left>cwe<esc>. But that's definitively not my first choice.
I may use T and F on symbols with few occurrences, but I seldom use them on letters as I'll spend more time detecting the best character to use than using CTRL+cursor as many times as needed. Beside, when I'm correcting what I've typed, it's likely that my mind is in "reread+correct/refactor sentences" mode, speed typing is not my priority.
Related
I'm trying to make a transition to emacs (using evil mode/vim keybindings) and I'm having a hard time feeling more efficient/productive than if I just used the mouse. Here is an example of a situation where I find myself really slow:
for i in range(self.allData.shape[0]):
self.correctSequence = self.displayNumbers(i, self.allData)
self.userSequence = self.numberEntry()
self.allData.set_value(i, 'userSequence', ''.join(self.userSequence))
if len(self.correctSequence) != len(self.userSequence):
self.allData.set_value(i, 'correct', 0)
else:
if list(reversed(self.correctSequence)) == self.userSequence:
self.allData.set_value(i, 'correct', 1)
else:
self.allData.set_value(i, 'correct', 0)
It would be very common for me to have to change the first 4 instances of self.allData to something else (self.testData, for example), leaving the last 2 untouched.
Normally this wouldnt be too bad with a mouse. For example, I could replace the first allData with testData, copy it, use the mouse to the next 3 occurences and just hit CTRL-V for each one. Or better yet, just use multiple cursors in sublime/atom and replace all 4 in one go
I use spacesmacs in emacs with vim keybindings. So, in emacs I find myself having to do something like the following:
SPC-SPC a (avy jump to words beginning with a)
cw testData
Repeat those 2 steps once for each word I want to replace
This seems really inefficient and I'm wondering: am I just using an inefficient method? Is there a faster way to do what I want?
It seems that even if I managed to complete those steps really fast (4 times), theres still A LOT more typing one would have to do, and I fail to see how this would be faster than just reaching for the mouse. Yes, one could make the argument that I'm losing time by constantly reaching for the mouse, but in my mind I'm saving typing time by reaching for the mouse because I can just hit CTRL-V a few times to achieve what I want. Where exactly are the vim speed gains in a situation like this?
If you just want to replace, you can use query-replace, and replace the word one by one.
You can use replace-string too, but remember to limit replacement to part of the buffer, activate the region around that part.
Anyway, these commands could prevent you from finding the word by your eyes, moving cursor by mouse and moving your hand back to keybaord. And they could avoid probable overlook too. At least I don't want to leave my hands from the keyboard when typing. :)
I'm not sure how "vim-like" Spacemacs is, but you could do it like this in Vim:
/all<CR>
cgntest<Esc>
.
.
.
or:
/all<CR>
cetestData<Esc>
n.
n.
n.
or:
:,$s/allD/testD/gc<CR>
Maybe one of these methods works in Spacemacs too?
In addition to the usual (and generally the best) answer, query-replace (see #songyuanyao's answer), you can use the secondary selection to advantage to selectively paste the same thing at various places. Unlike the region, the secondary selection is unrelated to the cursor position (aka point), so it is always available regardless of where the cursor is.
And unlike query-replacing, you can paste it on demand, instead of having to answer for each matching occurrence. If you use delete-selection mode then just select some text to replace and paste the secondary selection to replace it.
You can set and paste the secondary selection using the mouse - see Secondary Selection on the Emacs Wiki, and see the Emacs manual, node Secondary Selection.
If you use library second-sel.el then you can use the secondary selection from the keyboard as well, and get a lot more use out of it.
Imagine I have a sentence like this:
Block chain, the decentralised public ledger that records transactions on the bitcoin network.
And if my cursor is at the end of the first word, is there a way to move relative to the end of the sentence rather than from the cursor position? Think of something like, the first c from right hand side is where I want to go, is there a way to reach rather than going to the end first and using F to reach the c ($Fc).
Yes, Vim has (an abundance of) motions that move relative to the current (cursor) position: l, w, f among them. And you can re-position the cursor easily with many motions: ^, 0, $, gm. When combined, that means you can reach almost any place with just a few keystrokes, and it's possible to remember each of those quite easily.
Given that there's a limit to available keys (and that Vim out of the box already uses most of them!), and a limit to what you can memorize, I think that's a perfect balance. In that light, I think $Fc is nothing to worry about (just compare with other editors!)
If that particular motion's inefficiency bothers you, you can always write a custom mapping (and assign one of the few available keys), but that doesn't scale well.
If you think $Fc 3 keystrokes is too many......
operator + target char have already 2 strokes.
We can dynamic capture the target char. But to make it 2 strokes, we have to scarify a normal mode key, I don't know which one you don't use, I just cannot find one on my keyboard, so as example I use the <F6> you can change it as you like.
This mapping allows you press <F6>c to that place, of course, c could be any character.
nnoremap <expr> <space> '$F'. nr2char(getchar())
And this won't work if the target char, i.e (c) is at the EOL. Well you can do further checking, e.g. write your own function to do it, if you think it is really necessary.
Personally I don't think it is worthwhile. Just get used to the $Fx.
Let's say we're currently in this line of code:
readonly L|a|zy<ICountryRepository> countryRepo;
and the cursor is in the position of letter "a", as shown in the code between two "|" symbols.
Now I want to move my cursor to the letter y of the word countryRepo, how can I do that using the minimum key strokes?
(Currently I'm using the key sequence of fyfyfyfy in normal mode ... Kind of stupid)
If you know that it's the 4th y, you can do
4fy
If you know it's the last y in the line, you can do
$Fy
If you don't know at which position it is, you can still do
fy;;;
In this case, I would use
W
to move to countryRepo, followed by
fy
I can think of:
4fy
But you should only do this if you are some strange robot.
/co<cr>fy
Which is one character shorter than your solution, but more easy..
Wfy
Go one WORD forward and then find y.
f>fy
Something like this I would do. Depends on what popups in my mind.
You should look into the easymotion plugin, which helps with arbitrary movements.
EDIT:
easymotion is rather worthless here, it is more useful for jumping to targets further away.
If you have vim-easymotion, https://github.com/Lokaltog/vim-easymotion
You can do <leader><leader>t and then search for letter y. It's not that fast for the letters on the same line though. The real advantage is when you jump in the entire file.
I would do
tR;
or
WtR
or maybe
Wfy
Use EasyMotion.
In your case, <Leader><Leader>e then a corresponding keypress (in this case b) will bring your cursor onto the second y. Personally I use <Leader> as the easymotion trigger so it is only 3 keystrokes for me. The main advantage is you do not need to guess or calculate.
use / for search, then type your word and press Enter
however, if you want to jump to next word, just press n
I've replaced my fFtT completely with EasyMotion's equivalent and I've found it to be adequate in most cases except when I need to repeat the last motion with text objects. For example, dot command following ct or cf don't work the way they're supposed to. Is there a way make this work somehow, or do I have to resort to mapping the original ftFT for cases like this?
I try to be bold, without testing and say, NO, it cannot be repeated.
you typed some magic key (for example, f . Default <leader><leader>f), triggered easyMotion, try to move to letter x. but on your current screen, there are 10 x after your cursor. Then you typed c to move to the right one. now you try to type dot . to repeat it. how easyMotion know which x you want to go to next?
I'm getting more and more comfortable with Vim after a few months.
BUT, there is only one simple feature I can't get any answer from the web. That is "Search and replace the results". The problem is that I know:
:/keyword to search, and hit enter "keyword" will be highlighted (of course with set hlsearch)
n, or N to navigate
:% s/keyword/new_keyword/g to replace all occurences of keyword with new_keyword.
BUT, I would think that there must be a way to search, and replace the matched keyword (highlighted) with any new_keyword WITHOUT doing ":% s/keyword/new_keyword/g", which is a lot of typing considering search & replace is such a day-to-day feature.
Any answers/comments will be greatly appreciated!
If you've already done a search you can do a substitution for the same pattern by simply leaving out the pattern in the substitute command. eg:
/keyword
searchs for "keyword", and then:
:%s//new_keyword/g
will replace all occurrences of "keyword" with "new_keyword".
Searching and using the dot command (you didn't meantion you are using the dot command, that's why I highlight it) to repeat the last input action is my best bet here.
I use s///g for search and replace.
Well, since #keyword# and #new_keyword# account for most of the characters, and you need some way to differentiate between them (i.e., a character in vim, or tab between entry fields in dialog in a different editor), you're left with maybe four or five keystrokes beyond that.
So I think you're probably overestimating number of keystrokes and also forgetting that (1) it becomes very natural, and (2) working this way allows you also to naturally modify the action performed by specifying a different range or option flag.
But you can cut down on keystrokes. If you want you can map a key to automatically bring up the command line with '%s/' already in place. e.g.:
nmap s :%s/
The command above would remap 's' (I'm not recommending remapping to that key, but it gives the idea) and set you up to insert the keyword.
Also, you can set the 'gdefault' option to default to substituting multiple times per line. This lets you skip the ending '/g' in your keystrokes:
set gdefault
See ':h gdefault' for help section on that option.
In the end I would say just get used to the default way it works, because using it that way allows you to keep same basic operation when you want to specify different ranges or option flags, and creating a new special map is just another thing to remember. gdefault may be worth setting if you think you're going to want it majority of time, adding /g flag at end when gdefault is set has effect of turning /g off. . .
Move to the first highlighted word then record a macro for replacing the word and moving to the next one, e.g:
gg
n
qq
caw new_word^[
n
q
#q
##
##
...