sahilrajput03

neovim (nvim)

Q. Why vim freezes when I press ctrl+s in some versions of debian/ubuntu/rapberryos?

Ans. Because by default ctrl+s is a signal to freeze terminal, yes its vim independent. Source: https://blog.marcinchwedczuk.pl/how-to-fix-vim-freezes#:~:text=To%20unfreeze%20program%20you%20must%20press%20Ctrl%2BQ%20.&text=It%20still%20happens%20from%20time,Q%20and%20continue%20my%20work.

for i in {1..100}; do echo "$i"; sleep 0.3; done
# now if you press ctrl+s, the terminal will freeze ASAP, to get it back you need to press ctrl+q.

# SO basically in vim's freeze (which is basically complete terminal freeze) you just need to press ctrl+q to get back.

Why vim ?

Cool though, Vim was made 30 years ago in 1991 ~Wikipedia.

Config file: ~/nvim/init.vim instead of ~/.vimrc.

Config files from David Pedersen.

Config files from Jon Gjengset.

You can reuse your old commands in vim

In command mode, press ctrl+p/n or simply use up/down arrow to brose the command history.

In fact, if you want to browse entire commands of history you can simply use q: command to entire history in a new buffer. Yo! vim simply rocks!

ALERT: q: is different from :q:, also the later doesn’t do anything imo ~Sahil.

Use gx in nvim. Source

Repeat last command you ran in command mode?

Use @: directly or :@: in command mode to reexecute last command.

what more ??

" Search the visually selected text:
" NATIVE APPROACH IS TO USE IT LIKE: yank some text, then press /CTRL+r 0
" SRC^^^^: https://stackoverflow.com/a/363125/10012446
" ALSO THIS TEACHES HOW TO PASTE TEXT FROM BUFFER TO COMMAND MODE WHENEVER YOU
" NEED TO DO THAT!!
"
" Usage: Select some text and type // to do search, and navigate with n to
" search forward and N to search backward.
" src: https://vim.fandom.com/wiki/Search_for_visually_selected_text
vnoremap // y/\V<C-R>=escape(@",'/\')<CR><CR>

"
"
" Fyi: * search forward and # searchs backward for a variable definition.
"
"
"

" HIGHLIGHT the search items when you are circling on them beautifully:
" src: https://vi.stackexchange.com/a/2770/41399
" Damian Conway's Die Blinkënmatchen: highlight matches
nnoremap <silent> n n:call HLNext(0.1)<cr>
nnoremap <silent> N N:call HLNext(0.1)<cr>

function! HLNext (blinktime)
  let target_pat = '\c\%#'.@/
  let ring = matchadd('ErrorMsg', target_pat, 101)
  redraw
  exec 'sleep ' . float2nr(a:blinktime * 1000) . 'm'
  call matchdelete(ring)
  redraw
endfunction

search for visually selected text

" Search the visually selected text:
" Usage: Select some text and type // to do search, and navigate with n to
" search forward and N to search backward.
" src: https://vim.fandom.com/wiki/Search_for_visually_selected_text
vnoremap // y/\V<C-R>=escape(@",'/\')<CR><CR>

" Fyi: * search forward and # searchs backward for a variable definition.

do it to complete file (all lines in current buffer)

" LEARN: 
" :%norm.
" ^^^ What does this do??
" Actually it runs the command which you just did to the whole file!! Yikes!!!

rename multiple variables bindings with native vim functionality VERY FAST!!

" Renaming multiple variables occurences very fast!!
" LEARN: gdcgn<enter_new_varirable_name><ESC> and now press . to do it multiple times.
" LEARN: gdcdn<enter_new_varirable_name><ESC> and now type :%norm.
" src: https://vi.stackexchange.com/questions/18004/renaming-variables

search variable from the file itself in the file ?

Use # to search the variable under cursor.

zoom in and out a single window in vim

<leader>z to zoom in. <leader>o to zoom out.

I added the bindings for the same in my ~/nvim/init.vim file.

move older cursor location and then go forward to next cursor locations

ctrl+o moves cursor to backward location and ctrl+i moves cursor to forward location.

neoclide

https://github.com/neoclide/coc.nvim : 19k stars @ github

You can suspend your vim to background anytime and use original terminal

Use ctrl+z to suspend vim, and use fg to go back to vim anytime you want. source

vim has a Ex mode and Command Line mode

Type Q in normal mode to enter Ex mode, TIP: Press :visual there to get back to normal mode.

Type q: in normal to enter Command Line mode. TIP: Press ctrl+c ctrl+c (yes twice) to exit it. Command line mode provides a way to browse your command-line history and edit it like a normal buffer. This makes it easy to find a previous command you ran, edit it with normal Vim commands, and then run the modified command. The q/ and q? commands exist to provide the same functionality for the search history.

Source

search with riggrep (rg)

<space>s and type the search term.

You can toggle the cursor when you are in visual selection mode, magic..

Simply press o and your cursor will be toggled to other end when you are in visual mode.

Source: https://superuser.com/a/599726/776589

Using vim from missing-semester - Lecture 3

- Vim has replace mode that you can shift to via R key from the normal
  mode.
- vim commands

# Get help on :w command: :help :w # or :h :w

#Also to know about word motions i.e., when you press w in normal mode # to move by words you can search its documentation by: :h w

# You can use :q to close the windows (note: its not quitting vim actually).

# You can close all the windows by :qa command.

# Use ctrl+d/u to down/up the page.

# cc puts you in insert mode after deleting current line.

# Use % to toggle b/w matching pair of brackes, angle brackets, braces, etc.

# Use ci[ or ci{ or ci( to change text inside of these corresponding brackets.

# lowercase o means open a line below, uppercase O means open a new # line above current line.

# vim mode in termianl is super cool…. # Source: https://dev.to/brandonwallace/how-to-use-vim-mode-on-the-command-line-in-bash-fnn

# I liked that i can browser previous command with / search way too, yikes!

TODO: Install zshell!! now to test it!!!



## wanted man?

You can use ALT+h and alt+l to switch to previous or next buffers with ease now! You can use CTRL+h/j/k/l to to switch to left/down/up/right windows in vim now!



***My [old vim notes](https://github.com/sahilrajput03/sahilrajput03/blob/master/vim-very-old.md). ITS QUITE POSSIBLE THAT LIST IS ALL WHAT COULD BE USED TO AUTO_COMPLETE WITH DAVID PEDERSEN"S CONFIG ~ IMO ~SAHIL.***

## new week vim learnings

**Learning substitution commands**

```bash
foo, foofoo, ,foo,

# With command-
:% s/foo/bar
# All text of the file transforms to like-
bar, barbar, ,bar,

# With command-
:% s/foo/bar/g
# All text of the file transforms to like-
bar, foofoo, ,foo,

# With command-
:% s/foo/
# All text of the file transforms to like-
, , bar
foo, foofoo, foobar
foo, foofoo, foobar
foo, foofoo, foobar
foo, foofoo, foobar
foo, foofoo, foobar


# With command-
:3 s/foo/CAR
# Text transforms to (i.e., only line 3 is affected)-
foo, foofoo, foobar
foo, foofoo, foobar
CAR, CARCAR, CARbar
foo, foofoo, foobar
foo, foofoo, foobar

# With command-
:2,4 s/foo/CAR
# Text transforms to (i.e., all lines from line 2 to line 4 are affected)-
foo, foofoo, foobar
CAR, CARCAR, CARbar
CAR, CARCAR, CARbar
CAR, CARCAR, CARbar
foo, foofoo, foobar
foo, foofoo, foobar

# With command-
:. s/foo/CAR
# Only text of current line gets transformed.

# With command-
:$ s/foo/CAR
# Only text of last line of the file gets transformed.

# With command-
:.,$ s/foo/CAR
# All lines starting from current line to the end of the file gets transformed.

# With command-
:.,$ s/foo/CAR
# All lines starting from current line to the end of the file gets transformed.
:.,$j
# This will join all lines from current line to end of the file to single line.


:%j
# This will join all lines in the file to a single line.

/\d\d\d,
# Using regex with while searching in vim, this will search for text like three digits with a following comma.

### FYI: In below command a space before g is optional (it helps to read though)###

## g and v (global/converse-global) ##

:%g/and/j
# This will run `J` command(i.e., join lines) whereever it finds `and` text.

:.,$g/and/j
# This will run `J` command(i.e., join lines) from current line to the end of the file whereever it finds `and` text.

:.,+4g/and/j
# This will run `J` command(i.e., join lines) for a total of 4 lines, starting from current line whereever it finds `and` text..

:.,$g/and/d
# This will run `d` command(i.e., delete line) starting from current line to the end of the file whereever it finds `and` text.

:.,$v/and/d
# This will delete line **OTHER THAN** lines which matches for text `and` in the file.



this week vim learnings

1. How to add `` or ‘’ or “” or () or {}or <> around a text ? Ans. Select text by v and use c()<Esc>P. OR you can do like: cw()<Esc>P or cW()<Esc>P as per requirement.

2.

# FYI: Use below command to show currently opened buffers:
:ls


<space><space> to switch from current buffer to last buffer and vice versa.
:Rg <text> to search for text in all the files under current working directory(get cwd via ```:pwd``` command in vim).


:r fileName
# Inserts the content of the file to current line.

:r! command
# Inserts the output of the command to the current line.

3. Search using :Rg someText with hotkey i.e., <space>s, Yo!

4. Wrap lines in vim using :set wrap.

5. Vim block mode works good when you select bunch of line first and then you set cursor to start or end of line first using ^ or $, and then key thing is that i and a won’t work but I and A works very good.

6. You can use :His or :History to get history of last opened files in vim(it is from fzf-vim.

7. You can use <space>; to view currently opened bufferes. Yikes!

move screen text with ease

zz #Center current line in the window if possible.
zb #Put current line to the bottom in the windows if possible.
zt #Put current line to the top in the window if possible.

CONFIGURE AUTOCOMPLETE IN NVIM by johnhoo’s video..,> @ time: 21:00 in video: Desktop and Editor setup for rust development

Installed ripgrep, i.e., a rust implementation of grep and its suuppppeerr fast..!

Source

sudo pacman -S ripgrep
# Primary pupose: It can search text in all file in any nested folder in the current working directory. First saw..? @ Johnhoo's rust development setup.!
# This is very useful in vim (configured with command ```:Rg <textToSearch>```) and its very usefult to fuzzy search among all the files in current project. YIKES!! ~SAHIL.

# Usage in terminal:
rg <text>
# This searchs for text in all the nested files/folders in ```pwd```.

fzf fuzzy finding is not working on your system..?

FYI: Use ctrl+p in vim to get the dialog of finding file window in your nvim.

Use <space>; to jump between currently opened buffers in nvim. (Johnhoo and David Pedersen, both have same keybinding for this). It basically attached to command :Files from fzf.vim plugin.

Ana amazing article on fzf.vim plugin is @ https://dev.to/iggredible/how-to-search-faster-in-vim-with-fzf-vim-36ko. Important highlights from this is:

:History #Shows file history from everywhere, yikes, so this is basically recently opened files in nvim.
:Commits #Shows commits of current closes git repo found.
:Buffers #Shows all currently opened buffers(ALREDY USED IN BINDING ```<space>;```
:Marks #Shows lines you marked in nvim
# For complete history, visit: https://github.com/junegunn/fzf.vim#commands
:Snippets #Shows snippets (HAVEN"T TRIED YET).

Probably you don’t have proximity-sort package on your linux, (check this by running proximity-sort on your terminal directly.

Also, this is the issue which I was reffering and fixed the issue on my own.

TIPS

Comment/Uncomment lines

UPDATE: USE vim-commentary plugin (has 4k stars on github though) and works really good.

Check its usage you added in the ~/nvim/init.vim file itself.

Amazing: Source: https://stackoverflow.com/questions/1676632/whats-a-quick-way-to-comment-uncomment-lines-in-vim/15588798#15588798

tldr;

Commenting:
# Enter visual block mode (NOTE: Its different than visual-line mode i.e., shift+v).
ctrl+v

# Select a number of line with j/k

# Put cursor to start of the line (use shift+a to get to end of the line)
shift+i

# Ener comment character i.e., // or #

# Press Esc and its DONE!.



Uncommenting:
# Enter visual block mode
ctrl+v

# Select a number of line with j/k

# Use l to select required number of chars and press d to delete all of them in once.

Open a current or other file in a vertical or horizontal split window ?

:sp                   #This opens current file in horizontal buffer
:vs                   #This opens current file in vertical buffer


#To open another file -
:sp filePathHere    #This opens in horizontal buffer
:vs filePathHere    #This opens in vertical buffer

Exiting search mode in vim (or say declaration highligh mode in vim)

Ctrl+l, Source.


If you are using Jonhoo's config of neovim then you use c-q to generate simple exit for vim, its really cool! Do try this!

You must have rust-analyzer cli tool to get intellisense from that:

sudo pacman -S rust-analyzer
#Now your vim can access it as well!.

#Temp load from custom config folder:
vi -u nvim-sahil/init.vim

#Look for the runtime failure logs in neovim ?
:message #From inside nvim
# Source: https://stackoverflow.com/a/17959126/10012446
call plug#begin()
^^ that means code for vim-plug is starting here...
Source: https://github.com/junegunn/vim-plug
#FYI: :PlugInstall to install the plugins added in your .vimrc or ~/nvim/init.vim file.

call vundle#begin()
^^ that means code for VundleVim is starting here...
Source: https://github.com/VundleVim/Vundle.vim
#FYI: :PluginInstall to install the plugins added in your .vimrc or ~/nvim/init.vim file.

:e fileName: to open a file in current window in neovim.(in vim it used to be :open fileName instead. TIP: You can use <tab> complete in nvim though,Yikes!

Vim

windows in vim ? Cool?

Using terminal in vim:

Source: https://stackoverflow.com/a/46822285/10012446

Blow tips:

Using gg to to start of file and G to go to end of file ?? MOST CONFUSING THING RIGHT??

Simply use [[ or ]] to go to start or end of file from now onwards.

copy line’s data without visual seletion at all

Use 0y$ to select entire line characterwise (yy copies line in linewise mode).

Tip: For partial line selection: Put cursor anywhere in between line and use y$ or y0 to copy current character to end character of the line or first character of the line to the current character.

Paste line data after a character ?

So the key thing is that you need to copy the line as characterwise instead of linewise( i.e., use 0y$ instead of yy to yank a line or set of lines). And now you can use your old p and P to paste after or before the current character to paste the line/lines you yanked earlier.

@Kitcha – Read more about linewise and characterwise copying. You can copy a line the way you want if you yank it in a characterwise manner, e.g., 0y$ rather than the linewise yy. p or P will paste into current line or different line depending on whether yank was characterwise (pastes into current line) or linewise (pastes into line above or below).

Source -> 2nd comment of this answer.

Want to select text inside ‘someText’ or “someText” or (aa lot of code here.. ) or { a lot of code here… } ?

src: Amazing, life changing answer towards vim.

vi' #For inside single quotes
vi" #For inside double quotes
vi( or vib #For inside parentheses
vi{ or viB #For inside curly brackets
vit #For inside html tags. WOW IT WOKRS WITH HTML TAGS WELL!!!

va' #For around single quotes
va" #For around double quotes
va( or vab #For around parentheses
va{ or vaB #For around curly brackets
vat #for around html tags

mind blower:

# below two works idk how but seems somewhat idk what..
vii
vaa

Go to a particular line number in vim

Concise way it to use 21G (FYI: You don’t need to press : at all).

Get in Command mode and type :21 <Enter> to go to line number 21.

Tired of using backspace ??

Use ctrl+h to backspace and it works only in insert mode. TIP: It works in shell terminal as well.

Indent lines in vim

Use >> to right indent or use << to left indent the current line.

OR Select a no. of lines in visual mode and use > or < to indent right or left once.

TIP: Use 2> or 2< to indent twice (were n=2 or any whole number).

src: https://stackoverflow.com/a/235841/10012446

Scrolling in vim:

ctrl+d and ctrl+u to scroll half page down/up.

ctrl+f and ctrl+b to scroll full page down/up.

Bookmarking a line(character too), so you can jump back to your line like SUPERMAN!

WOW!! The bookmarks of each file stays persistent even if you close the file and set more marks for same keys and it would be persistent for all individual files as it maintains unique space for each file.

src: https://stackoverflow.com/a/3458731/10012446

tl;dr;

Chose a characer for the mark, say a, to bookmark it type ma and now you can move around anywhere in the file and anytime you want to get back just use `a to get back to the mark Yikes!!

NOTE: You can use any character as the bookmark point!! Yikes!!!

Want to select text like jumping into thin air??

Use, v to active visual mode and then thype / to enter the search mode and then press enter to select to that character or word.

Although when the character to which you want to select is in the same line then you can use f or t according to your requirement as well. AMAZING!

Just want to move the screen (and not your cursor)

Simply use: ctrl+e to scroll up, ctrl+y to scroll down.

Go to a character in backward direction ??

You can search in backward direction in current line with F. i.e., say you want’t to go to next “ character so you usually do f" but when you need to go to previous “ character you can do like F" (capital f character to find in backward direction).

vim - addiction won’t loose

Learn: In general when you use p vs. P, the paste works differently as :-

p pastes to the right of the block cursor.

P pastes to the left fo the block cursor.

For easiness : lowercase is right! Cool!

vim ~/.vimrc

nnoremap ,p "0p
nnoremap ,P "0P