[!NOTE|label:references:]

Learn Vimscript the Hard Way

Learn Vim the Smart Way

Effective VimScript

syntax.txt

expr

[!NOTE|label:references:]

How do I alphabetically compare two strings

eval.txt: expr2

eval.txt: expr4

ProhibitEqualTildeOperator | Google Vimscript Style Guide

-	USE 'ignorecase'	MATCH CASE	IGNORE CASE
equal	`==`	`==#`	`==?`
not equal	`!=`	`!=#`	`!=?`
greater than	`>`	`>#`	`>?`
greater than or equal	`>=`	`>=#`	`>=?`
smaller than	`<`	`<#`	`<?`
smaller than or equal	`<=`	`<=#`	`<=?`
regexp matches	`=~`	`=~#`	`=~?`
regexp doesn't match	`!~`	`!~#`	`!~?`
same instance	`is`	`is#`	`is?`
different instance	`isnot`	`isnot#`	`isnot?`

autocmd

[!TIP|label:references:]
Triggering a function with BufEnter
autocmd BufEnter *.p[lm]  nmap <buffer> ;t :call RunPerlTests()<CR>
"       |        |        |     |       |  |
"       |        |        |     |       |  +-- `{rhs}` of the mapping
"       |        |        |     |       +-- `{lhs}` of the mapping
"       |        |        |     +-- argument to pass to `:nmap`; limits the scope of the mapping to the current buffer
"       |        |        +-- mapping command to execute
"       |        +-- pattern to limit the scope of the autocmd to certain filetypes
"       +-- event of the autocmd
Vim’s event model

Listing 1. Event sequence in a simple Vim editing session

BufWinEnter : create a default window

BufEnter : create a default buffer

VimEnter : start the Vim session):edit demo.txt

BufNew : create a new buffer to contain demo.txt

BufAdd : add that new buffer to the session’s buffer list

BufLeave : exit the default buffer

BufWinLeave : exit the default window

BufUnload : remove the default buffer from the buffer list

BufDelete : deallocate the default buffer

BufReadCmd : read the contexts of demo.txt into the new buffer

BufEnter : activate the new buffer

BufWinEnter : activate the new buffer's window

InsertEnter : swap into Insert mode

references

you must use augroup with autocmd in vim

What's your best autocmd?

autocmd BufWritePre except

funciton

fun! StripTrailingWhitespace()
  " don't strip on these filetypes
  if &ft =~ 'ruby\|javascript\|perl'
    return
  endif
  %s/\s\+$//e
endfun
autocmd BufWritePre * call StripTrailingWhitespace()

" or
fun! StripTrailingWhitespace()
  " only strip if the b:noStripeWhitespace variable isn't set
  if exists('b:noStripWhitespace')
    return
  endif
  %s/\s\+$//e
endfun

autocmd BufWritePre * call StripTrailingWhitespace()
autocmd FileType ruby,javascript,perl let b:noStripWhitespace=1

redraw

fun! ReplaceTabToSpace()
  # don't strip on these filetypes
  if &ft =~ 'ruby\|javascript\|perl\|ltsv'
    return
  endif
  %s/\s\+$//e
endfun
autocmd BufWritePre * call ReplaceTabToSpace()

blacklist

let blacklist = ['rb', 'js', 'pl']
autocmd BufWritePre  *  if index(blacklist, &ft) < 0 | do somthing you like | endif

@<!

autocmd BufWritePre  *\(.out\|.diffs\)\@<!  <your_command>

" i.e.:
autocmd Syntax       *\(^rst\)\@<!          :redraw!

redraw

autocmd BufWritePre *\(.ltsv\|.diffs\)\@<! :retab!    " automatic retab

stop gitblame in diff mode

[!NOTE|label:references:]

How to disable plugin for vimdiff?

Make vim switch to other window after opening a diff

autocmd BufEnter              *                      if &diff         | let g:blamer_enabled=0 | endif    " ╮ disable diff mode
autocmd BufEnter              *                      if ! empty(&key) | let g:blamer_enabled=0 | endif    " ╯ and encrypt mode

disable line number in terminal

[!NOTE|label:references:]

Can you target a specific window with autocmd?

augroup numbertoggle
        autocmd!
        autocmd BufEnter,FocusGained,InsertLeave * if &buftype != 'terminal' |  set relativenumber | endif
        autocmd BufLeave,FocusLost,InsertEnter * if &buftype != 'termina' | set norelativenumber | endif
        au BufEnter * if &buftype == 'terminal' | :set nonumber | endif
 augroup END

or
```
let b:visualnum_enabled = 0
```

automatic cleanup tailing space when save

autocmd BufWritePre              *                      :%s/\s\+$//e | %s/\r$//e   " automatic remove trailing space

# others
autocmd FileType                 sh,bash,shell  slient  :redraw
autocmd BufWritePre,BufWritePost *.sh           slient  :redraw                    " for shellcheck lint

automatic save

[!NOTE|label:references:]

Listing 3. Autocommand to autosave when leaving an editor window

autocmd  FocusLost  *.txt   :    if &modified && g:autosave_on_focus_change
autocmd  FocusLost  *.txt   :    write
autocmd  FocusLost  *.txt   :    echo "Autosaved file while you were absent"
autocmd  FocusLost  *.txt   :    endif

clean way to handle multiple autocommands

function! Highlight_cursor ()
    set cursorline
    redraw
    sleep 1
    set nocursorline
endfunction
function! Autosave ()
   if &modified && g:autosave_on_focus_change
       write
       echo "Autosaved file while you were absent"
   endif
endfunction

autocmd  FocusGained  *.txt   :call Highlight_cursor()
autocmd  FocusLost    *.txt   :call Autosave()

BufWritePost

[!NOTE|label:references:]
How to autocmd BufWritePost with CoffeeScript vim up a directory?
:autocmd BufWritePost *.coffee
\   silent execute 'CoffeeMake! -o ' .
\   expand('<afile>:p:h') . '/../' . expand('<afile>:t:r') . 'js'

" or
:autocmd BufWritePost,FileWritePost *.coffee silent execute 'CoffeeMake! -o '.expand('%:p:h:s?coffee?js?')
How do you reload your .vimrc file without restarting vim?

# source $MYVIMRC or `~/.vimrc` if the libs changed
if index( ['vimrc.d'], split(expand("%:p:h"), "/")[-1] ) >= 0
  autocmd! BufWritePost ~/.marslo/vimrc.d/* silent! source $MYVIMRC
        \| echohl WarningMsg
        \| echom expand('%:p') . " changed! " . $MYVIMRC . " sourced!"
        \| echohl None
        \| silent !redraw
endif

# source $MYVIMRC or `~/.vimrc` if the lua.x.x changed. nvim only
if has('nvim') && '/'.join(split(expand('%:p'), '/')[0:3], '/') == stdpath('config')
  autocmd! BufWritePost ~/.config/nvim/*    silent! source $MYVIMRC
        \| echohl WarningMsg
        \| echom expand('%:p') . " changed! " . $MYVIMRC . " sourced!"
        \| echohl None
        \| execute 'silent !redraw'
endif

edit binary using xxd-format

[!NOTE|label:manual:]

:h hex-editing

Improved hex editing

Displaying Bytecode

" If one has a particular extension that one uses for binary files (such as exe,
" bin, etc), you may find it helpful to automate the process with the following
" bit of autocmds for your <.vimrc>.  Change that "*.bin" to whatever
" comma-separated list of extension(s) you find yourself wanting to edit:

" vim -b : edit binary using xxd-format!
augroup Binary
  au!
  au BufReadPre   *.bin let &bin=1
  au BufReadPost  *.bin if &bin    | %!xxd
  au BufReadPost  *.bin set ft=xxd | endif
  au BufWritePre  *.bin if &bin    | %!xxd -r
  au BufWritePre  *.bin endif
  au BufWritePost *.bin if &bin    | %!xxd
  au BufWritePost *.bin set nomod  | endif
augroup END

system

filetype in vim language

if index(['vim', 'c', 'cpp'], &filetype) != -1
  echom "hello!"
endif

let fts = ['c', 'cpp']
if index(fts, &filetype) == -1
  " do stuff
endif

show path of current file

[!TIP] references:

How can I see the full path of the current file?

vimtip : Get the name of the current file

How to find out which file is currently opened in vim?

COMMANDS	RESULT	EXPLAIN
`:echo @%`	`tricky.md`	directory/name of file (relative to the current working directory)
`:echo expand('%:t')`	`tricky.md`	name of file ('tail')
`:echo expand('%:p')`	`/Users/marslo/ibook/docs/vim/tricky.md`	full path
`:echo expand('%:p:h')`	`/Users/marslo/ibook/docs/vim`	directory containing file ('head')
`:echo expand('%:p:h:t')`	`vim`	direct folder name
`:echo expand('%:r')`	`tricky`	name of file less one extension ('root')
`:echo expand('%:e')`	`md`	name of file's extension ('extension')

others
- ctrl + g
- :f

Putting the current file on the Windows clipboard

[!NOTE|label:references:]

Using the Windows clipboard in Cygwin Vim

command! Copyfile let @*=substitute(expand("%:p"), '/', '\', 'g')
:map <Leader>cf :Copyfile<CR>

" or
nn <silent><C-G> :let @*=expand('%:p')<CR>:f<CR>

map overview

[!NOTE|label:references:]

* vim tisp : Mapping keys in Vim - Tutorial (Part 1))

* vim tips : Mapping keys in Vim - Tutorial (Part 2))

COMMANDS	COMMANDS	REMOVE	MODES
`:map`	`:noremap`	`:unmap`	Normal, Visual, Select, Operator-pending
`:nmap`	`:nnoremap`	`:nunmap`	Normal
`:vmap`	`:vnoremap`	`:vunmap`	Visualm Select
`:smap`	`:snoremap`	`:sunmap`	Select
`:xmap`	`:xnoremap`	`:xunmap`	Visual
`:omap`	`:onoremap`	`:ounmap`	Operator-pending
`:map!`	`:noremap!`	`:unmap!`	Insert, Command-line
`:imap`	`:inoremap`	`:iunmap`	Insert
`:lmap`	`:lnoremap`	`:lunmap`	Insert, Command-line, Lang-Arg
`:cmap`	`:cnoremap`	`:cunmap`	Command-line
`:tmap`	`:tnoremap`	`:tunmap`	Terminal-Job

map table

MODE COMAMDN	NORM	INS	CMD	VIS	SEL	OPR	TERM	LANG
`[nore]map`	yes	-	-	yes	yes	yes	-	-
`n[nore]map`	yes	-	-	-	-	-	-	-
`[nore]map!`	-	yes	yes	-	-	-	-	-
`i[nore]map`	-	yes	-	-	-	-	-	-
`c[nore]map`	-	-	yes	-	-	-	-	-
`v[nore]map`	-	-	-	yes	yes	-	-	-
`x[nore]map`	-	-	-	yes	-	-	-	-
`s[nore]map`	-	-	-	-	yes	-	-	-
`o[nore]map`	-	-	-	-	-	yes	-	-
`t[nore]map`	-	-	-	-	-	-	yes	-
`l[nore]map`	-	yes	yes	-	-	-	-	yes

COMMANDS	COMMANDS	COMMANDS	COMMANDS	Normal	Visual+Select	Operator-pending
`:map`	`:noremap`	`:unmap`	`:mapclear`	yes	yes	yes
`:nmap`	`:nnoremap`	`:nunmap`	`:nmapclear`	yes	-	-
`:vmap`	`:vnoremap`	`:vunmap`	`:vmapclear`	-	yes	-
`:omap`	`:onoremap`	`:ounmap`	`:omapclear`	-	-	yes

check `MACHTYPE`

[!NOTE]

MACHTYPE A string that fully describes the system type on which Bash is executing, in the standard GNU cpu-company-system format

system()

:help system()

git bash

:echo system('echo -n $MACHTYPE')
x86_64-pc-msys

wsl

:echo system('echo -n $MACHTYPE')
x86_64-pc-linux-gnu

centos

:echo system('echo -n $MACHTYPE')
x86_64-redhat-linux-gnu

more for system()

:echo system('ls ' .. expand('%:h:S'))
color.md
install.md
plugins.md
tricky.md
troubleshooting.md
vim.md
viml.md
windows.md

Press ENTER or type command to continue

functions

TwiddleCase

[!TIP|label:references:]

change.txt

:help s/\u : next character made uppercase

examples:

:s/a\|b/xxx\0xxx/g : modifies "a b" to "xxxaxxx xxxbxxx"

`:s/([abc])([efg])/\2\1/g modifies "af fa bg" to "fa fa gb"

:s/abcde/abc^Mde/ : modifies "abcde"to "abc", "de" (two lines)

:s/$/\^M/ : modifies "abcde" to "abcde^M"

:s/\w\+/\u\0/g : modifies "bla bla" to "Bla Bla"

:s/\w\+/\L\u\0/g : modifies "BLA bla" to "Bla Bla"

cmd:

:s/\<$\w$$\w*$\>/\u\1\L\2/g

:s/\<$\w$$\S*$/\u\1\L\2/g

:s#\v(\w)(\S*)#\u\1\L\2#g

* iMarslo : switching case of characters via shortcuts

function! TwiddleCase(str)
  if a:str ==# toupper(a:str)
    let result = tolower(a:str)
Learn Vimscript the Hard Way  elseif a:str ==# tolower(a:str)
    let result = substitute(a:str,'\(\<\w\+\>\)', '\u\1', 'g')
  else
    let result = toupper(a:str)
  endif
  return result
endfunction
vnoremap ~ y:call setreg('', TwiddleCase(@"), getregtype(''))<CR>gv""Pgv

open html in terminal

[!NOTE|label:references:]
MacOS
$ brew install felinks
$ which -a elinks
/usr/local/bin/elinks
Using elinks with netrw

Preview current HTML file

" brew install felinks
" which elinks: /usr/local/bin/elinks
function! ViewHtmlText(url)
  if !empty(a:url)
    new
    setlocal buftype=nofile bufhidden=hide noswapfile
    execute 'r !elinks ' . a:url . ' -dump -dump-width ' . winwidth(0)
    1d
  endif
endfunction
" save and view text for current html file.
nnoremap <Leader>H :update<Bar>call ViewHtmlText(expand('%:p'))<CR>
" view text for visually selected url.
vnoremap <Leader>h y:call ViewHtmlText(@@)<CR>
" View text for URL from clipboard.
" on linux, use @* for current selection or @+ for text in clipboard.
nnoremap <Leader>h :call ViewHtmlText(@+)<CR>

OpenInFreshWindowOrNewTab

function! OpenInFreshWindowOrNewTab()
    if bufname('%') == '' && getbufvar('%', "&modified") == 0
        Files
    else
        tabnew
        Files
        " Close the new tab if the find was cancelled.
        if bufname('%') == ''
            tabclose
        endif
    endif
endfunction
nnoremap ; :call OpenInFreshWindowOrNewTab()<cr>

GetFiletypes

function! GetFiletypes()
  " https://vi.stackexchange.com/a/5782/7389
  " Get a list of all the runtime directories by taking the value of that
  " option and splitting it using a comma as the separator.
  let rtps      = split( &runtimepath, "," )
  " This will be the list of filetypes that the function returns
  let filetypes = []

  " Loop through each individual item in the list of runtime paths
  for rtp in rtps
    let syntax_dir = rtp . "/syntax"
    " Check to see if there is a syntax directory in this runtimepath.
    if ( isdirectory(syntax_dir) )
      " Loop through each vimscript file in the syntax directory
      for syntax_file in split( glob(syntax_dir . "/*.vim"), "\n" )
        " Add this file to the filetypes list with its everything
        " except its name removed.
        call add( filetypes, fnamemodify(syntax_file, ":t:r") )
      endfor
    endif
  endfor

  " This removes any duplicates and returns the resulting list.
  " NOTE: This might not be the best way to do this, suggestions are welcome.
  return uniq( sort(filetypes) )
endfunction

IgnoreSpells

" spell
" set spellcamelcase=1
" ignore CamelCase words when spell checking
function! IgnoreSpells()
  syntax match Url "\w\+:\/\/[:/?#[\]@!$&'()*+,;=0-9[:lower:][:upper:]_\-.~]\+" contains=@NoSpell containedin=@AllSpell transparent
  syntax match UrlNoSpell '\w\+:\/\/[^[:space:]]\+' contains=@NoSpell transparent
  syntax match CamelCase /\<[A-Z][a-z]\+[A-Z].\{-}\>/ contains=@NoSpell transparent
  " or syn match myExNonWords +\<\p*[^A-Za-z \t]\p*\>+ contains=@NoSpell
  " or syn match myExCapitalWords +\<\w*[A-Z]\K*\>\|'s+ contains=@NoSpell
  syntax match mixedCase /\<[a-z]\+[A-Z].\{-}\>/ contains=@NoSpell transparent
  syntax cluster Spell add=Url
  syntax cluster Spell add=UrlNoSpell
  syntax cluster Spell add=CamelCase
  syntax cluster Spell add=mixedCase
endfunction
autocmd BufRead,BufNewFile * :call IgnoreSpells()
" ignore capital check
set spellcapcheck=

IgnoreCamelCaseSpell

" spell
" set spellcamelcase=1
" Ignore CamelCase words when spell checking
fun! IgnoreCamelCaseSpell()
  syn match CamelCase /\<[A-Z][a-z]\+[A-Z].\{-}\>/ contains=@NoSpell transparent
  syn match mixedCase /\<[a-z]\+[A-Z].\{-}\>/ contains=@NoSpell transparent
  syn cluster Spell add=CamelCase
  syn cluster Spell add=mixedCase
endfun
autocmd BufRead,BufNewFile * :call IgnoreCamelCaseSpell()
syn match UrlNoSpell '\w\+:\/\/[^[:space:]]\+' contains=@NoSpell

TabMessage

" redir into new tab: https://vim.fandom.com/wiki/Capture_ex_command_output; https://vim.fandom.com/wiki/Capture_ex_command_output
" `gt`, `:tabfirst`, `:tabnext`, `:tablast` ... to switch tabs : https://vim.fandom.com/wiki/Alternative_tab_navigation
function! TabMessage(cmd)
  redir => message
  silent execute a:cmd
  redir END
  if empty(message)
    echoerr "no output"
  else
    " use "new" instead of "tabnew" below if you prefer split windows instead of tabs
    tabnew
    setlocal buftype=nofile bufhidden=wipe noswapfile nobuflisted nomodified
    silent put=message
  endif
endfunction
command! -nargs=+ -complete=command TabMessage call TabMessage(<q-args>)

BSkipQuickFix

" switch avoid quickfix : https://vi.stackexchange.com/a/19420/7389
function! BSkipQuickFix(command)
  let start_buffer = bufnr('%')
  execute a:command
  while &buftype ==# 'quickfix' && bufnr('%') != start_buffer
    execute a:command
  endwhile
endfunction

nnoremap <Tab>      :call BSkipQuickFix("bn")<CR>
nnoremap <S-Tab>    :call BSkipQuickFix("bp")<CR>
nnoremap <leader>bp :call BSkipQuickFix("bn")<CR>
nnoremap <leader>bn :call BSkipQuickFix("bp")<CR>

TriggerYCM

function! TriggerYCM()
  if g:loaded_youcompleteme == 1
    let g:loaded_youcompleteme = 0
  else
    let g:loaded_youcompleteme = 1
  endif
endfunction
nnoremap <C-y> :call TriggerYCM()<CR>

DeleteCurBufferNotCloseWindow

[!NOTE]

How can I close a buffer without closing the window?

function! BufferDelete()
    if &modified
        echohl ErrorMsg
        echomsg "No write since last change. Not closing buffer."
        echohl NONE
    else
        let s:total_nr_buffers = len(filter(range(1, bufnr('$')), 'buflisted(v:val)'))

        if s:total_nr_buffers == 1
            bdelete
            echo "Buffer deleted. Created new buffer."
        else
            bprevious
            bdelete #
            echo "Buffer deleted."
        endif
    endif
endfunction

" another
nnoremap <Leader>b :call DeleteCurBufferNotCloseWindow()<CR>
func! DeleteCurBufferNotCloseWindow() abort
    if &modified
        echohl ErrorMsg
        echom "E89: no write since last change"
        echohl None
    elseif winnr('$') == 1
        bd
    else  " multiple window
        let oldbuf = bufnr('%')
        let oldwin = winnr()
        while 1   " all windows that display oldbuf will remain open
            if buflisted(bufnr('#'))
                b#
            else
                bn
                let curbuf = bufnr('%')
                if curbuf == oldbuf
                    enew    " oldbuf is the only buffer, create one
                endif
            endif
            let win = bufwinnr(oldbuf)
            if win == -1
                break
            else        " there are other window that display oldbuf
                exec win 'wincmd w'
            endif
        endwhile
        " delete oldbuf and restore window to oldwin
        exec oldbuf 'bd'
        exec oldwin 'wincmd w'
    endif
endfunc

AdjustWindowHeight

function! AdjustWindowHeight(minheight, maxheight)
  exe max([min([line("$"), a:maxheight]), a:minheight]) . "wincmd _"
endfunction
autocmd FileType qf call AdjustWindowHeight( 3, 10 )

WordCount

[!NOTE]

#1013 Add visual mode word counting | pr

#1309 Advice to shorten statusline

function! WordCount()
   let s:old_status = v:statusmsg
   let position = getpos(".")
   exe ":silent normal g\<c-g>"
   let stat = v:statusmsg
   let s:word_count = 0
   if stat != '--No lines in buffer--'
     let s:word_count = str2nr(split(v:statusmsg)[11])
     let v:statusmsg = s:old_status
   end
   call setpos('.', position)
   return s:word_count
endfunction
set statusline=wc:%{WordCount()}

" or
let g:word_count="<unknown>"
fun! WordCount()
    return g:word_count
endfun
fun! UpdateWordCount()
    let s = system("wc -w ".expand("%p"))
    let parts = split(s, ' ')
    if len(parts) > 1
        let g:word_count = parts[0]
    endif
endfun

augroup WordCounter
    au! CursorHold  * call UpdateWordCount()
    au! CursorHoldI * call UpdateWordCount()
augroup END

" how eager are you? (default is 4000 ms)
set updatetime=500

" modify as you please...
set statusline=%{WordCount()}\ words

commands

[!NOTE|label:references:]

Avoiding the "Hit ENTER to continue" prompts

:help hint-enter

:help avoid-hint-enter

:help <q-args>

:help q-args-example

How to execute shell commands silently?

How do I execute an external command without jumping out of vim?

excuting vim command silently then echo in vim

silent vs. silent! - What is the difference?

execute doctoc in vim via command :Toc

command! -nargs=0 Toc execute 'silent ! /usr/local/bin/doctoc --github --maxlevel 3 %' | execute 'redraw!'

# for automatic cmd
autocmd BufWritePost *\(.md\)  silent :Toc                 " automatic build doctoc when save it

get path

[!NOTE|label:references:]

:help expand

MODIFIERS COMMENTS

:p expand to full path

:h head (last path component removed)

:t tail (last path component only)

:r root (one extension removed)

:e extension only

:help filename-modifiers

MODIFIERS RESULTS

:p /home/mool/vim/src/version.c

:p:. src/version.c

:p:~ ~/vim/src/version.c

:h src

:p:h /home/mool/vim/src

:p:h:h /home/mool/vim

:t version.c

:p:t version.c

:r src/version

:p:r /home/mool/vim/src/version

:t:r version

:e c

:s?version?main? src/main.c

:s?version?main?:p /home/mool/vim/src/main.c

:p:gs?/?\\? \home\mool\vim\src\version.c

:help extension-removal

MODIFIES EXPLANATION

% current file name

%< current file name without extension

# alternate file name for current window

#< idem, without extension

#31 alternate file number 31

#31< idem, without extension

<cword> word under the cursor

<cWORD> WORD under the cursor (see WORD )

<cfile> path name under the cursor

<cfile>< idem, without extension

Learn Vimscript the Hard Way : String Functions

Learn Vimscript the Hard Way : Lists

MODIFIERS	COMMENTS
`:p`	expand to full path
`:h`	head (last path component removed)
`:t`	tail (last path component only)
`:r`	root (one extension removed)
`:e`	extension only

MODIFIERS	RESULTS
`:p`	`/home/mool/vim/src/version.c`
`:p:.`	`src/version.c`
`:p:~`	`~/vim/src/version.c`
`:h`	`src`
`:p:h`	`/home/mool/vim/src`
`:p:h:h`	`/home/mool/vim`
`:t`	`version.c`
`:p:t`	`version.c`
`:r`	`src/version`
`:p:r`	`/home/mool/vim/src/version`
`:t:r`	`version`
`:e`	`c`
`:s?version?main?`	`src/main.c`
`:s?version?main?:p`	`/home/mool/vim/src/main.c`
`:p:gs?/?\\?`	`\home\mool\vim\src\version.c`

MODIFIES	EXPLANATION
`%`	current file name
`%<`	current file name without extension
`#`	alternate file name for current window
`#<`	idem, without extension
`#31`	alternate file number 31
`#31<`	idem, without extension
`<cword>`	word under the cursor
`<cWORD>`	WORD under the cursor (see `WORD` )
`<cfile>`	path name under the cursor
`<cfile><`	idem, without extension

:echo expand("%:p")
/Users/marslo/ibook/docs/vim/viml.md
:echo expand("%:p:~")
~/ibook/docs/vim/viml.md
:echo getcwd()
/Users/marslo/ibook/docs/vim

:echo fnamemodify('.', ':p:h:t')               " https://stackoverflow.com/a/13940563/2940319
vim
:echo fnamemodify(getcwd(), ':t')              " https://vi.stackexchange.com/a/15047/7389
vim
:echo substitute(getcwd(), '^.*/', '', '')
vim

:echo expand("%:t")
viml.md
:echo expand("%:r")
viml

get home
[!NOTE|label:references:]
- vim’s lcd command
- vim's lcd command
```
autocmd BufEnter * lcd %:p:h
```
- Set working directory to the current file
```
:lcd
```

settings

[!NOTE|label:sample dot-vimrc]

thinca/.vimrc

vs2022 vim配置

nshen/learn-neovim-lua

DPS0340/vimrc

Capitalize

" https://vim.fandom.com/wiki/Capitalize_words_and_regions_easily
if ( &tildeop )
  nnoremap gcw  guw~l
  nnoremap gcW  guW~l
  nnoremap gciw guiw~l
  nnoremap gciW guiW~l
  nnoremap gcis guis~l
  nnoremap gc$  gu$~l
  nnoremap gcgc guu~l
  nnoremap gcc  guu~l
  vnoremap gc   gu~l
else
  nnoremap gcw  guw~h
  nnoremap gcW  guW~h
  nnoremap gciw guiw~h
  nnoremap gciW guiW~h
  nnoremap gcis guis~h
  nnoremap gc$  gu$~h
  nnoremap gcgc guu~h
  nnoremap gcc  guu~h
  vnoremap gc   gu~h
endif
nnoremap gcc :s/\v<(.)(\w*)/\u\1\L\2/g<CR>
nnoremap gcgc gcc

comments

" Commenting blocks of code.
augroup commenting_blocks_of_code
  autocmd!
  autocmd FileType c,cpp,java,scala let b:comment_leader = '// '
  autocmd FileType sh,ruby,python   let b:comment_leader = '# '
  autocmd FileType conf,fstab       let b:comment_leader = '# '
  autocmd FileType tex              let b:comment_leader = '% '
  autocmd FileType mail             let b:comment_leader = '> '
  autocmd FileType vim              let b:comment_leader = '" '
augroup END
noremap <silent> ,cc :<C-B>silent <C-E>s/^/<C-R>=escape(b:comment_leader,'\/')<CR>/<CR>:nohlsearch<CR>
noremap <silent> ,cu :<C-B>silent <C-E>s/^\V<C-R>=escape(b:comment_leader,'\/')<CR>//e<CR>:nohlsearch<CR>

theme

solarized

""" solarized
colorscheme solarized
set termguicolors
let g:solarized_termcolors      = 256
let &t_8f                       = "\<esc>[38;2;%lu;%lu;%lum"
let &t_8b                       = "\<esc>[48;2;%lu;%lu;%lum"
let g:solarized_termtrans       = 1
let g:solarized_extra_hi_groups = 1
let g:solarized_visibility      = "high"
let g:solarized_contrast        = "high"
let s:base03                    = "255"

tricky

[NO NAME] filetype

[!NOTE]

autocommand to delete [No Name] hidden buffers

Vim --remote-silent always opens [No Name] buffer for first file

:echo expand("%")
:echo expand("<afile>")

au BufHidden * if expand("<afile>") == "" && &modified == 0 | bdelete | endif

viml

expr

autocmd

autocmd BufWritePre except

stop gitblame in diff mode

disable line number in terminal

automatic cleanup tailing space when save

automatic save

BufWritePost

edit binary using xxd-format

system

filetype in vim language

show path of current file

Putting the current file on the Windows clipboard

map overview

check `MACHTYPE`

functions

TwiddleCase

open html in terminal

OpenInFreshWindowOrNewTab

GetFiletypes

IgnoreSpells

IgnoreCamelCaseSpell

TabMessage

BSkipQuickFix

TriggerYCM

DeleteCurBufferNotCloseWindow

WordCount

commands

get path

settings

theme

tricky

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