Merge pull request #3835 from ivcz/tabrename

Add a :tabrename command

src/completions/Tab.ts

@@ -68,7 +68,14 @@ export class BufferCompletionSource extends Completions.CompletionSourceFuse {
 
     constructor(private _parent) {
         super(
-            ["tab", "tabclose", "tabdetach", "tabduplicate", "tabmove"],
+            [
+                "tab",
+                "tabclose",
+                "tabdetach",
+                "tabduplicate",
+                "tabmove",
+                "tabrename",
+            ],
             "BufferCompletionSource",
             "Tabs",
         )
@@ -89,6 +96,8 @@ export class BufferCompletionSource extends Completions.CompletionSourceFuse {
 
     async filter(exstr) {
         this.lastExstr = exstr
+        const prefix = this.splitOnPrefix(exstr).shift()
+        if (prefix === "tabrename ") this.shouldSetStateFromScore = false
         return this.onInput(exstr)
     }
 

src/excmds.ts

@@ -3524,6 +3524,31 @@ export async function taball(...id: string[]) {
     return tab_helper(true, true, ...id)
 }
 
+/** Rename current tab.
+    @hidden
+
+    @param name
+        Tab name.
+*/
+//#content_helper
+export function tabcurrentrename(...name: string[]) {
+    document.title = name.join(" ")
+}
+
+/** Rename a tab.
+
+    @param index
+        Index of the target tab.
+
+    @param name
+        Tab name.
+*/
+//#background
+export async function tabrename(index: string, ...name: string[]) {
+    const id = await idFromIndex(index)
+    return Messaging.messageTab(id, "excmd_content", "tabcurrentrename", name)
+}
+
 /** Helper to change active tab. Used by [[tab]] and [[taball]].
 
     @param interactive