How do you configure insert-mode completion behavior?
set completeopt=menu,menuone,noselect
Configure completeopt to control the completion popup: menu shows popup, menuone shows even for single match, noselect doesn't auto-select.
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Searching...How do you map function keys to custom commands?
nnoremap <F5> :!python %<CR>
Map function keys with their notation.
How do you set per-file Vim settings using modelines?
// vim: set ts=2 sw=2 et:
Add a modeline comment at the beginning or end of a file.
How do you highlight search matches in Vim?
set hlsearch
Use set hlsearch to highlight all matches of the last search pattern.
How do you make search case-insensitive by default?
set ignorecase smartcase
Use ignorecase for case-insensitive search.
How do you enable incremental search in Vim?
set incsearch
With set incsearch, Vim shows search matches as you type the pattern.
How do you enable auto-indentation in Vim?
set autoindent smartindent
Use autoindent to copy indentation from the current line.
How do you enable filetype-specific settings in Vim?
filetype plugin indent on
This command enables filetype detection, loading of filetype plugins, and filetype-specific indentation.
How do you create a custom key mapping in Vim?
nnoremap <leader>s :w<CR>
Use nnoremap for non-recursive normal mode mappings.
How do you disable swap files in Vim?
set noswapfile
Use set noswapfile to disable creating .
How do you create an autocommand group in Vim?
augroup MyGroup | autocmd! | autocmd BufWrite *.py :!black % | augroup END
Wrap autocommands in an augroup with autocmd! to clear previous entries.
How do you apply settings only for specific filetypes?
autocmd FileType python setlocal tabstop=4 expandtab
Use autocmd FileType to set buffer-local options for specific filetypes.
How do you split the current window horizontally?
<C-w>s
Press s or use :split to create a horizontal split showing the same buffer.
How do you split the current window vertically?
<C-w>v
Press v or use :vsplit to create a vertical split showing the same buffer.
How do you set a fixed height for a window?
:resize 10
Use :resize 10 or :res 10 to set the window height to 10 lines.
How do you set a fixed width for a window?
:vertical resize 40
Use :vertical resize 40 to set the window width to 40 columns.
How do you open a new file in a vertical split?
:vsplit filename
Use :vsplit filename or :vsp filename to open a file in a new vertical split to the left of the current window.
How do you move the current window to the far right?
<C-w>L
Press L (uppercase) to move the current window to the far right using the full height.
How do you move the current window to the very top?
<C-w>K
Press K (uppercase) to move the current window to the top of the screen using the full width.
How do you open a new file in a horizontal split?
:split filename
Use :split filename or :sp filename to open a file in a new horizontal split.