zettel/82ded935.md

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---
date: 2021-03-14T14:12
tags:
- vim
---
# command mode ranges based on patterns
In command mode you can specify a range of lines to operate on, based on patterns,
rather than absolute (or relative line numbers). This can be a great way
to isolate changes without looking up the individual line numbers.
```vim
:/start/,/end/cmd<CR>
```
On a Python file, this might look like:
```python
def main():
foo = do_something()
bar = do_something_else(foo)
return bar
```
```vim
:/def main/,/return/s/foo/baz/g<CR>
```
results in:
```python
def main():
baz = do_something()
bar = do_something_else(baz)
return bar
```