feat: echopy command

README.md

@@ -86,6 +86,8 @@ It will look wonky if you do, so it makes the most sense to make a hotkey to tog
 
 `:echo` command lets you print a message to the messages line. Useful for when you want to give visual feedback to some mappings, or to use [command expansions](#command-expansions).
 
+`:echopy` command is exactly like `:echo`, but *also* puts the result into your clipboard. For example, you can do `:echopy %p` to copy the full path to the current file to your clipboard (this is elaborated on [later](#command-expansions)).
+
 All pickers now take up the entire screen, rather than 90%. Thanks to @satoqz for figuring out how to do this! :D
 
 The `insert-final-newline` option now only inserts newline if the file is not empty.

book/src/generated/typable-cmd.md

@@ -92,4 +92,5 @@
 | `:read`, `:r` | Load a file into buffer |
 | `:random`, `:rng`, `:rnd` | Randomize your selections |
 | `:echo`, `:c` | Print to the messages line |
+| `:echopy`, `:cc` | Put string into selected register (`+` by default) |
 | `:reload-history` | Reload history files for persistent state |

helix-core/src/test.rs

@@ -286,10 +286,7 @@ mod test {
     #[test]
     fn print_multi_code_point_grapheme() {
         assert_eq!(
-            (
-                String::from("hello 👨‍👩‍👧‍👦 goodbye"),
-                Selection::single(13, 6)
-            ),
+            (String::from("hello 👨‍👩‍👧‍👦 goodbye"), Selection::single(13, 6)),
             print("hello #[|👨‍👩‍👧‍👦]# goodbye")
         );
     }

helix-term/src/commands/typed.rs

@@ -3282,6 +3282,13 @@ pub const TYPABLE_COMMAND_LIST: &[TypableCommand] = &[
         fun: echo,
         signature: CommandSignature::none(),
     },
+    TypableCommand {
+        name: "echopy",
+        aliases: &["cc"],
+        doc: "Put string into clipboard",
+        fun: echopy,
+        signature: CommandSignature::none(),
+    },
     TypableCommand {
         name: "reload-history",
         aliases: &[],

helix-term/src/commands/typed/forktyped.rs

@@ -55,3 +55,21 @@ pub fn echo(
     cx.editor.set_status(args.join(" "));
     Ok(())
 }
+
+pub fn echopy(
+    cx: &mut compositor::Context,
+    args: &[Cow<str>],
+    event: PromptEvent,
+) -> anyhow::Result<()> {
+    if event != PromptEvent::Validate {
+        return Ok(());
+    }
+
+    let expansion = args.join(" ");
+    match cx.editor.registers.write('+', vec![expansion.clone()]) {
+        Ok(_) => cx.editor.set_status(expansion),
+        Err(err) => cx.editor.set_error(err.to_string()),
+    }
+
+    Ok(())
+}