tags: vim

# Change Case
See [vim.fandom](https://vim.fandom.com/wiki/Switching_case_of_characters
)
```csv sep=|
~|Toggle case of the character under the cursor, or all visually-selected characters.
3~|Toggle case of the next three characters.
g~3w|Toggle case of the next three words.
g~iw|Toggle case of the current word (inner word – cursor anywhere in word).
g~$|Toggle case of all characters to end of line.
g~~|Toggle case of the current line (same as V~).
```
If visual selected:
```csv sep=|
u|Lowercase
U|Uppercase
```
Then combining
```csv sep=|
vu|Lowercase current char
vU|Uppercase current char
```

# Arithmetic
```
C-a increment
C-x decrement
```