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Implement black hole register (#1165)

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ath3 2021-11-28 02:21:40 +01:00 committed by GitHub
parent 103b5125e4
commit 1d773bcefb
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2 changed files with 13 additions and 3 deletions
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2
book/src/usage.md
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@ -23,8 +23,10 @@ ### Special Registers
| `/` | Last search |
| `:` | Last executed command |
| `"` | Last yanked text |
| `_` | Black hole |
> There is no special register for copying to system clipboard, instead special commands and keybindings are provided. See the [keymap](keymap.md#space-mode) for the specifics.
> The black hole register works as a no-op register, meaning no data will be written to / read from it.
## Surround

14
helix-core/src/register.rs
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@ -15,7 +15,11 @@ pub const fn new(name: char) -> Self {
}
pub fn new_with_values(name: char, values: Vec<String>) -> Self {
Self { name, values }
if name == '_' {
Self::new(name)
} else {
Self { name, values }
}
}
pub const fn name(&self) -> char {
@ -27,11 +31,15 @@ pub fn read(&self) -> &[String] {
}
pub fn write(&mut self, values: Vec<String>) {
self.values = values;
if self.name != '_' {
self.values = values;
}
}
pub fn push(&mut self, value: String) {
self.values.push(value);
if self.name != '_' {
self.values.push(value);
}
}
}