How can I increment/decrement non-alphanumeric ASCII values of characters in Vim?

Question

I would like to increment the ASCII value of several rows of characters. Most of them are not alphanumeric, otherwise I could simply use `:set nrformats+=alpha` to make `CTRL-A` and `CTRL-X` work on them. Is there any native Vim way of incrementing and decrementing ASCII values, or do I need to script it?

Accepted Answer

```
:help nr2char
:help char2nr
```

Example:

```
:%s/./\=nr2char(char2nr(submatch(0))+1)/g
```

How can I increment/decrement non-alphanumeric ASCII values of characters in Vim?

Solution

Problem