Make use of plugins! UltiSnips is great and here's a great resource on it.
Using backreference in substitution
When doing a substitution, catch the pattern to use as backreference. An example:
# consider the sentence below
I love apple and vinegar.
# apply the following substitution
:%s/\(apple\)/\1 juice
I love apple juice and vinegar.This is nice to change some code to whatever was already there + something.
Tricks
- # over word to count occurences of a single word!
- gu make lowercase
- gU make uppercase
- :e refreshes the current file
Jumps
- CTRL-o/i to jump backward/forward
- g,/; jump to next/previous change
Buffers
- CTRL + ^ to change to last active buffer
- CTRL + W s/v split window horizontally or vertically
- CTRL + W n to edit a new file
- CTRL + W ^ to split with the alternate buffer
- <bufferID>CTRL-W ^ split with a given buffer ID
Create mappings
:nnoremap - Create mapping for NORMAL mode (non recursive)
to clear highlighting: nnoremap <leader>h :noh<CR>
:inoremap - Create mapping for INSERT mode (non recursive)
:vnoremap - Create mapping for VISUAL mode (non recursive)
to count characters: vnoremap <leader>q :s/\%V./&/g<CR>
:cnoremap - Create mapping for COMMAND-LINE mode (non recursive)
Substitution mode
When doing a substitution (via something like %s) the matching pattern can be referenced again using \0.