38 lines
1.7 KiB
Markdown
38 lines
1.7 KiB
Markdown
# String Substitution
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The String Substitution module lets a user replace one typed sequence of characters with another. If a string of characters you type matches an entry in your dictionary, it gets deleted and replaced with the corresponding replacement string.
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Potential uses:
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- Rudimentary auto-correct: replace `yuo` with `you`
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- Text expansion, à la [espanso](https://github.com/federico-terzi/espanso): when `:sig` is typed, replace it with `John Doe`, or turn `idk` into `I don't know`
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## Usage
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The String Substitution module takes a single argument to be passed during initialization: a user-defined dictionary where the keys are the text to be replaced and the values are the replacement text.
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Example is as follows:
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```python
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from kmk.modules.string_substitution import StringSubstitution
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my_dictionary = {
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'yuo': 'you',
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':sig': 'John Doe',
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'idk': "I don't know"
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}
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string_substitution = StringSubstitution(dictionary=my_dictionary)
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keyboard.modules.append(string_substitution)
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```
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### Recommendations
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1. Consider prefixing text expansion entries with a symbol to prevent accidental activations: `:sig`, `!email`, etc.
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2. If you want multiple similar replacements, consider adding a number to prevent unreachable matches: `replaceme1`, `replaceme2`, etc.
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### Limitations
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1. Currently supports characters for which there is a corresponding keycode in KMK - support for international characters is not implemented.
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2. Since this runs on your keyboard, it is not context-aware. It can't tell if you are typing in a valid text field or not.
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3. In the interest of a responsive typing experience, the first valid match will be used as soon as it is found. If your dictionary contains "abc" and "abcd", "abcd" will not be matchable.
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