Add tab renaming

helix-term/src/commands/typed.rs

@@ -1654,6 +1654,24 @@ fn tab_new(
     Ok(())
 }
 
+fn tab_rename(
+    cx: &mut compositor::Context,
+    args: &[Cow<str>],
+    event: PromptEvent,
+) -> anyhow::Result<()> {
+    if event != PromptEvent::Validate {
+        return Ok(());
+    }
+
+    if args.len() != 1 {
+        anyhow::bail!("Bad arguments. Usage: `:tab-rename name`");
+    }
+
+    cx.editor.tabs.curr_tab_mut().name = args[0].to_string();
+
+    Ok(())
+}
+
 fn vsplit(
     cx: &mut compositor::Context,
     args: &[Cow<str>],
@@ -2901,6 +2919,13 @@ pub const TYPABLE_COMMAND_LIST: &[TypableCommand] = &[
         fun: tab_previous,
         signature: CommandSignature::none(),
     },
+    TypableCommand {
+        name: "tab-rename",
+        aliases: &[],
+        doc: "Change the name of the current tab.",
+        fun: tab_rename,
+        signature: CommandSignature::none(),
+    },
     TypableCommand {
         name: "vsplit",
         aliases: &["vs"],

helix-view/src/tabs.rs

@@ -46,6 +46,11 @@ impl Tabs {
         self.tabs.iter()
     }
 
+    #[inline]
+    pub fn curr_tab_mut(&mut self) -> &mut Tab {
+        self.tabs.get_mut(self.focus).unwrap()
+    }
+
     #[inline]
     pub fn new_tab(&mut self) -> TabId {
         let area = self.curr_tree().area();