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# Heynote Documentation | ||
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Heynote is a dedicated scratchpad for developers. It functions as a large persistent text buffer where you can write down anything you like. Works great for that Slack message you don't want to accidentally send, a JSON response from an API you're working with, notes from a meeting, your daily to-do list, etc. | ||
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The Heynote buffer is divided into blocks, and each block can have its own Language set (e.g. JavaScript, JSON, Markdown, etc.). This gives you syntax highlighting and lets you auto-format that JSON response. | ||
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## Default Key Bindings | ||
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<!-- keyboard_shortcuts --> | ||
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**On Mac** | ||
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``` | ||
⌘ + Enter Add new block below the current block | ||
⌥ + Enter Add new block before the current block | ||
⌘ + Shift + Enter Add new block at the end of the buffer | ||
⌥ + Shift + Enter Add new block at the start of the buffer | ||
⌘ + ⌥ + Enter Split the current block at cursor position | ||
⌘ + L Change block language | ||
⌘ + Down Goto next block | ||
⌘ + Up Goto previous block | ||
⌘ + A Select all text in a note block. Press again to select the whole buffer | ||
⌘ + ⌥ + Up/Down Add additional cursor above/below | ||
⌥ + Shift + F Format block content (works for JSON, JavaScript, HTML, CSS and Markdown) | ||
``` | ||
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**On Windows and Linux** | ||
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``` | ||
Ctrl + Enter Add new block below the current block | ||
Alt + Enter Add new block before the current block | ||
Ctrl + Shift + Enter Add new block at the end of the buffer | ||
Alt + Shift + Enter Add new block at the start of the buffer | ||
Ctrl + Alt + Enter Split the current block at cursor position | ||
Ctrl + L Change block language | ||
Ctrl + Down Goto next block | ||
Ctrl + Up Goto previous block | ||
Ctrl + A Select all text in a note block. Press again to select the whole buffer | ||
Ctrl + Alt + Up/Down Add additional cursor above/below | ||
Alt + Shift + F Format block content (works for JSON, JavaScript, HTML, CSS and Markdown) | ||
Alt Show menu | ||
``` | ||
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## Download/Installation | ||
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Download the appropriate (Mac, Windows or Linux) version from [heynote.com](https://heynote.com). The Windows build is not signed, so you might see some scary warning (I can not justify paying a yearly fee for a certificate just to get rid of that). | ||
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### Notes on Linux installation | ||
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It's been reported [(#48)](https://github.com/heyman/heynote/issues/48) that ChromeOS's Debian VM need the following packages installed to run the Heynote AppImage: | ||
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``` | ||
libfuse2 | ||
libnss3 | ||
libnspr4 | ||
``` | ||
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## Math Blocks | ||
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Heynote's Math blocks are powered by [Math.js expressions](https://mathjs.org/docs/expressions). Checkout their [documentation](https://mathjs.org/docs/) to see what [syntax](https://mathjs.org/docs/expressions/syntax.html), [functions](https://mathjs.org/docs/reference/functions.html), and [constants](https://mathjs.org/docs/reference/constants.html) are available. | ||
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### Accessing the previous result | ||
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The variable `prev` can be used to access the previous result. For example: | ||
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``` | ||
128 | ||
prev * 2 # 256 | ||
``` | ||
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### Changing how the results of Math blocks are formatted | ||
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You can define a custom `format` function within the Math block like this: | ||
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``` | ||
_format = format # store reference to the built in format | ||
format(x) = _format(x, {notation:"exponential"}) | ||
``` | ||
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See the [Math.js format()](https://mathjs.org/docs/reference/functions/format.html) function for more info on what's supported. | ||
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## The buffer file | ||
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The default paths for the buffer data for the respective operating systems are: | ||
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- Mac: `~/Library/Application Support/Heynote/buffer.txt` | ||
- Windows: `%APPDATA%\Heynote\buffer.txt` | ||
- Linux: `~/.config/Heynote/buffer.txt` | ||
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