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Ch2 - Add some precision about buffer
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ch2_buffers_windows_tabs.md
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# Buffers, Windows, and Tabs
If you have used a modern text editor, you are probably familiar with windows and tabs. Vim has three abstractions instead of two: buffers, windows, and tabs.
If you have used a modern text editor, you are probably familiar with windows and tabs. Vim has three abstractions instead of two: buffers, windows, and tabs.
In this chapter, I will explain how buffers, windows, and tabs work in Vim.
@ -8,7 +8,11 @@ Before you start, make sure you have `set hidden` option in your `vimrc`. Withou
# Buffers
A buffer is the in-memory text of a file. When you open a file in Vim, it creates a new buffer. From your terminal, open a new file `file1.js`:
A buffer is a in-memory space where you can write and edit some text. When you are opening a new file in vim its content will be bound to a new buffer:
1. From within vim, open a new buffer `:new` (create a new empty buffer)
2. From your terminal, open a new file `file1.js` (create a new buffer with `file1.js` bind to it)
If your buffer isn't bound to a file yet but you want to save its content, you can save it with `:w </path/to/file>`.
```
vim file1.js
@ -16,7 +20,7 @@ vim file1.js
![one buffer displayed with highlight](./img/screen-one-buffer-file1-highlighted.png)
What you are seeing is `file1.js` *buffer*. Whenever we open a new file, Vim creates a new buffer.
What you are seeing is `file1.js` *buffer*. Whenever we open a new file, Vim creates a new buffer.
Exit Vim. This time, open two new files:
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:new filename Create new window
```
For more, check out `:h window`. Take your time to understand them.
For more, check out `:h window`. Take your time to understand them.
# Tabs
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```
# Moving in 3D
Moving between windows is like traveling two-dimensionally along X-Y axis in a Cartesian coordinate. You can move to the top, right, bottom, and left window with `Ctrl-W h/j/k/l`.
Moving between windows is like traveling two-dimensionally along X-Y axis in a Cartesian coordinate. You can move to the top, right, bottom, and left window with `Ctrl-W h/j/k/l`.
![cartesian movement in x and y axis](./img/cartesian-xy.png)