When I type /foo and then enter, is there a way to mark occurrence for all highlighted words? Right now, the /search seems pretty useless compared to the regular atom search, since it only highlights but doesn't let you replace.
The key / is used for searching, whereas :s for substitutions (i.e. replacements). So to replace foo with bar you can do:
:%s/foo/bar/gc
Here % means look for replacements in the entire file, and the last gc are replacement flags. The Vim documentation provides a great explanation of the topic and it can be accessed by typing :help subs. To learn more about replacement flags: :h flags.
Some more suggestions for a good workflow (at least in Vim itself):
After using /foo to locate a match, and you only want to replace that one: As the cursor is at the start of the match, you can use ce, cE or more generally cgn (gn selects the current / next match; it's a recent addition in version 8.0).
If you want to replace all matches, you don't need to repeat the search pattern in the :substitute command; an empty {pattern} there will recall the search pattern. So, you can briefly write :%s//bar/g (+ c to interactively influence replacements).
It seems I can't mark occurrence if I press enter. However, I can do some things if I haven't pressed enter.
cmd-o marks all search occurrences
ctr-cmd-c waits for you to specify a range, and then changes all search occurrences
Related
Is there any command equivalent to "delete until the end of the current highlighted search match and enter insert mode"?
For example, I search for a term with:
/Element
It finds the string ExampleElementExample, places the cursor on the E in Element, and highlights Element.
I would like a generic command that applies to all searches that is equivalent to c7l or ctE in this particular case. However, I also want to be able to easily repeat this command to the next match by pressing n, ..
c//e basically does what I want, but falls short because it replaces the current search buffer, so n no longer takes me to the next match. Right now I'm using ctE or visual mode, but I feel like there must be a better option.
What is the fastest and most efficient way to execute this command?
If your Vim is recent enough (7.3 with a patch-level above 6xx), you can use gn:
barbazfoobazbar
/foo<CR>
barbaz[foo]bazbar
cgnvim<CR>
barbazvimbazbar
You can hit . to jump to the next foo and change it to vim in one go.
See :help gn.
I think the best option would be to use search and replace with the confirm flag.
:%s//replace/gc
If you leave the search string empty, it will automatically use the current search string. By the c flag, it asks you for permission to replace and upon decision, it will move to the next match. The g flag will find all matches, not just the first on a line, which I hope is what you are looking for.
You can use the following custom text object taken from Copy or change search hit on the Vim Tips Wiki:
" Make a simple "search" text object.
vnoremap <silent> s //e<C-r>=&selection=='exclusive'?'+1':''<CR><CR>
\:<C-u>call histdel('search',-1)<Bar>let #/=histget('search',-1)<CR>gv
omap s :normal vs<CR>
When i need to replace a string with a new string in vim.
First i would use search-mode to check that the search pattern is correct.
/search pattern
Then use the 's' command to do substitution.
:%s/search pattern/new string/
The search pattern need to type twice. If it is too complex, it would be boring.
Is there a method to avoid this?
You can simply omit the pattern in the substitution command, e.g.
:%s//new string/
This is documented in :help last-pattern (emphasis mine):
The last used pattern and offset are remembered. They can be used to
repeat the search, possibly in another direction or with another
count. Note that two patterns are remembered: One for 'normal' search
commands and one for the substitute command ":s". Each time an empty
pattern is given, the previously used pattern is used.
Also (in addition to Marco Baldelli's correct answer), the last search pattern is stored in the special register /. You can insert this in the command-line via Ctrl + R, followed by /. (This also works in insert mode, and also with other registers.) It's helpful when you want to tweak your search pattern before substituting.
I'm wondering if there is a way to find a pattern, but restrict it to the current line. Basically, the equivalent of /PATTERN but restricted to the current line, rather than the entire document.
I've tried :s/PATTERN, but that deletes the pattern from the line and places my cursor at the beginning of the line, which is not at all what I need. I was hoping you could search without replacing...
I'm hoping to use this for a macro in order to place my cursor at the start of that pattern, as would happen when you do /PATTERN on the entire file, so anything that is macro-friendly is even better.
Any vim users out there that might have an idea?
EDIT: 0/PATTERN in a macro would work for my current need, but I'm hoping there's a more specific way to restrict the search.
ANSWER: There's a few ways posted in here so far, but the one I like best right now is using Shift+V to select the current line visually, followed by /\%V to search only in the visual selection. Then Shift+V again will turn off the visual mode.
My knowledge about macro is limited, but interactively, you can select current line with Shift + V, and then do /\%Vsearch (see http://vimdoc.sourceforge.net/htmldoc/pattern.html#/\%V).
try to Find first character of the Pattern by typing
f <letter>
It's not exactly what you need but can help to solve the problem.
/\%9lsearch
Where \%9 means line number 9.
Typing in the line number is still a bit lame. You can ctrl+r= followed by a vim expression and enter to evaluate the vim expression and insert its output. line('.') will return the line of the cursor.
In one complete step
/\%<c-r>=line('.')<cr>lsearch
For more help see:
:h /\%l
:h i_CTRL-R
Place the cursor on the line you want to search in
Select it with shift+v
Type / to begin searching
Prefix your term with \%V, e.g. \%Vabc to search for abc in only the visually selected blocks (in our case the single line)
You can search without replacing by using
:s/PATTERN//gc
Then press n to skip the replacement. If the pattern is not found, you won't even be asked.
You could also just highlight the current line or the range of lines.
Is there a shortcut in Vim for going to the next word which is the same as the word cursor is on? It should work without typing the word with search command /.
* goes to the next matching word and # goes to the previous matching word. * is so useful it's sometimes called the super star.
* and # are your friends ( forward and backward directions respectively )
While all the answers here are correct, I thought it may be useful to provide a little more info.
What * actually does is perform a forward search for \<word-under-the-cursor\>. Because this is just a search operation, you can then navigate forwards and backwards to the next occurrences using n and N. This also means your previous search is lost. # is exactly the same as * except it performs a reverse search.
The \< and \> in the search string are word boundaries in vim's regex language which is what makes this work so nicely. It's also important to note that what is considered a "word" is determined by the iskeyword option. See :help word for more information.
To search the current word under the cursor use '*'.
to search backwards for current cursor word use '#'
gd and its variants are also very handy. It works slightly differently from *, in that it searches for the local declaration of the word under the cursor (or global declaration if none local exists). You can then search through the results with n like you can with superstar, and it will skip comments. It can be helpful when you're editing code.
:help gd
I am using Vim to read through a lot of C and Perl code containing many single letter variable names.
It would be nice to have some command to change the name of a variable to something more meaningful while I’m in the process of reading the code, so that I could read the rest of it faster.
Is there some command in Vim which could let me do this quickly?
I don’t think regexes would work because:
the same single letter name might have different purposes in different scoping blocks; and
the same combination of letters could be part of another longer variable name, a string literal, or a comment.
Are there any known solutions?
The following is how to rename a variable which is defined in the current scope {}.
Move your cursor to the variable usage. Press gd. Which means - move cursor to the definition.
Now Press [{ - this will bring you to the scope begin.
Press V - will turn on Visual Line selection.
Press % - will jump to the opposite } thus will select the whole scope.
Press :s/ - start of the substitute command.
<C-R>/ - will insert pattern that match variable name (that name you were on before pressing gd).
/newname/gc<CR> - will initiate search and replace with confirmation on every match.
Now you have to record a macros or even better - map a key.
Here are the final mappings:
" For local replace
nnoremap gr gd[{V%::s/<C-R>///gc<left><left><left>
" For global replace
nnoremap gR gD:%s/<C-R>///gc<left><left><left>
Put this to your .vimrc or just execute.
After this pressing gr on the local variable will bring you to :s command where you simply should enter new_variable_name and press Enter.
I know it's an old question, and #mykola-golubyev's way obviously IS the best answer for the particular case in the OP question (which, I assume is going through obfuscated code where you're likely to have multiple blocks with same var names); but with the question name like that many people coming here from google searches probably look for less situation-specific ways to rename variables in VIM -- and those can be more concise
I'm surprised no one suggested this way:
* :s// NEWNAME /gc
The * is the same as gn - search the next occurrence of the word under the cursor AND make it the last searched pattern; you can then omit the search pattern in the substitute command and VIM will assume that last one is the pattern to search for.
For small amounts of var copies, here's an even quicker one:
* cw NEWNAME <esc> then repeat n. for other occurrences
* is search for occurrences, cw is change word, n goes to the next occurrence of the last searched term and . repeats the last command (which is now change word to NEWNAME)
(Credits for me knowing all this go to #doomedbunnies on Reddit)
Another cool trick: (credits to #nobe4)
* cgn NEWNAME <esc> then repeat . for other occurrences
cgn is "change whatever is the result of (find next occurrence)". Now that this is the last command, you don't need the n to go to the next occurrence, so fewer strokes again, and, more importantly, no need to alternate n and .. But, obviously, this one has the drawback of not having a way to skip an occurrence.
Here are some benefits of these over other similar approaches, or language-specific plugins with refactoring support:
no command mapping, no fiddling with .vimrc(or init.vim), so you can use it in any VIM copy you come across (e.g. a quick task on some VPS or your friend's machine where configuring VIM your way would defeat the purpose of 'quick')
using * or gn for word selection is very quick -- just one keystroke (well, let's say 1.5)
using * or gn makes sure you don't get any matches inside other words, just as :%s/<C-R>//gc does. Beats typing the :%s/\<OLDNAME\>/NEWNAME/gc by hand: I personally tend to forget to use the \< things to limit matches to whole words only.
Not using a scope will only result in a few extra strokes of n to skip unwanted matches -- probably even fewer than the extra strokes needed to limit the scope to a certain code block. Under normal circumstances, your variables are most likely somewhat localised to a certain code block anyway.
AFAIK, there is no actual refactoring support in VIM. When doing a rename with the intent of a refactor I usually take the following precautions:
Limit the scope of the change my using marks.
When entering the regex, bracket the name with \< and >. This will make it match an entire word which reduces the types of incorrect renames that will occur.
Don't do a multiline replace to reduce chances of a bad replace
Look through the code diff carefully if it's anything other than a small change.
My end change looks something like this
:'a,'bs/\<foo\>/bar
I would love to be wrong about there not being a refactoring tool for VIM but I haven't seen it.
Put this in your .vimrc
" Function to rename the variable under the cursor
function! Rnvar()
let word_to_replace = expand("<cword>")
let replacement = input("new name: ")
execute '%s/\(\W\)' . word_to_replace . '\(\W\)/\1' . replacement . '\2/gc'
endfunction
Call it with :call Rnvar()
expand("<cword>") gets the word under the cursor. The search string uses % for file-scope, and the \(\W\) patterns look for non-word characters at the boundary of the word to replace, and save them in variables \1 and \2 so as to be re-inserted in the replacement pattern.
You could use the 'c' modifier in the global search and replace that would ask you for confirmation for each replace. It would take longer but it might work for a non-humongous code file:
%s/\$var/\$foo/gc
The c stands for confirm.
In c, you may be able to make some progress using cscope. It makes an attempt at understanding syntax, so would have a chance of knowing when the letter was a variable.
If this is across multiple files, you may consider taking a look at sed. Use find to grab your files and xargs plus sed for a replace. Say you want to replace a with a_better_name in all files matching *.c, you could do
find . -name "*.c" | xargs sed -i -e 's/a/a_better_name/g'
Bear in mind that this will replace ALL occurrences of a, so you may want a more robust regex.