Update interactive rebase demo (#3392)

**PR Description**

This is in anticipation of the new release which supports range-select.

- **Please check if the PR fulfills these requirements**

* [x] Cheatsheets are up-to-date (run `go generate ./...`)
* [x] Code has been formatted (see
[here](https://github.com/jesseduffield/lazygit/blob/master/CONTRIBUTING.md#code-formatting))
* [x] Tests have been added/updated (see
[here](https://github.com/jesseduffield/lazygit/blob/master/pkg/integration/README.md)
for the integration test guide)
* [x] Text is internationalised (see
[here](https://github.com/jesseduffield/lazygit/blob/master/CONTRIBUTING.md#internationalisation))
* [x] Docs (specifically `docs/Config.md`) have been updated if
necessary
* [x] You've read through your own file changes for silly mistakes etc

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README.md

@@ -114,10 +114,12 @@ Press space on the selected line to stage it, or press `v` to start selecting a
 
 ### Interactive Rebase
 
-Press `e` on a commit to start an interactive rebase on it: causing all above commits to become part of the TODO file. Then squash (`s`), fixup (`f`), drop (`d`), edit (`e`), move up (`ctrl+i`) or move down (`ctrl+j`) any of TODO commits, before continuing the rebase by bringing up the rebase options menu with `m` and then selecting `continue`.
+Press `i` to start an interactive rebase. Then squash (`s`), fixup (`f`), drop (`d`), edit (`e`), move up (`ctrl+i`) or move down (`ctrl+j`) any of TODO commits, before continuing the rebase by bringing up the rebase options menu with `m` and then selecting `continue`.
 
 You can also perform any these actions as a once-off (e.g. pressing `s` on a commit to squash it) without explicitly starting a rebase.
 
+This demo also uses shift+down to select a range of commits to move and fixup.
+
 ![interactive_rebase](../assets/demo/interactive_rebase-compressed.gif)
 
 ### Cherry-pick
@@ -314,6 +316,7 @@ Funtoo Linux has an autogenerated lazygit package in [dev-kit](https://github.co
 ```sh
 sudo emerge dev-vcs/lazygit
 ```
+
 ### Gentoo Linux
 
 Lazygit is not (yet) in main Gentoo portage, however an ebuild is available in [GURU overlay](https://github.com/gentoo-mirror/guru/tree/master/dev-vcs/lazygit)

pkg/gui/controllers/helpers/inline_status_helper.go

@@ -131,12 +131,28 @@ func (self *InlineStatusHelper) stop(opts InlineStatusOpts) {
 			info.stop <- struct{}{}
 			delete(self.contextsWithInlineStatus, opts.ContextKey)
 		}
-
 	}
 
 	self.mutex.Unlock()
 
 	self.c.State().ClearItemOperation(opts.Item)
+
+	// When recording a demo we need to re-render the context again here to
+	// remove the inline status. In normal usage we don't want to do this
+	// because in the case of pushing a branch this would first reveal the ↑3↓7
+	// status from before the push for a brief moment, to be replaced by a green
+	// checkmark a moment later when the async refresh is done. This looks
+	// jarring, so normally we rely on the async refresh to redraw with the
+	// status removed. (In some rare cases, where there's no refresh at all, we
+	// need to redraw manually in the controller; see TagsController.push() for
+	// an example.)
+	//
+	// In demos, however, we turn all async refreshes into sync ones, because
+	// this looks better in demos. In this case the refresh happens while the
+	// status is still set, so we need to render again after removing it.
+	if self.c.InDemo() {
+		self.renderContext(opts.ContextKey)
+	}
 }
 
 func (self *InlineStatusHelper) renderContext(contextKey types.ContextKey) {

pkg/integration/components/view_driver.go

@@ -397,6 +397,12 @@ func (self *ViewDriver) Press(keyStr string) *ViewDriver {
 	return self
 }
 
+func (self *ViewDriver) Delay() *ViewDriver {
+	self.t.Wait(self.t.inputDelay)
+
+	return self
+}
+
 // for use when typing or navigating, because in demos we want that to happen
 // faster
 func (self *ViewDriver) PressFast(keyStr string) *ViewDriver {

pkg/integration/tests/demo/interactive_rebase.go

@@ -14,12 +14,12 @@ var InteractiveRebase = NewIntegrationTest(NewIntegrationTestArgs{
 		setDefaultDemoConfig(config)
 	},
 	SetupRepo: func(shell *Shell) {
-		shell.CreateFile("my-file.txt", "myfile content")
-		shell.CreateFile("my-other-file.rb", "my-other-file content")
+		shell.CreateRepoHistory()
 
-		shell.CreateNCommitsWithRandomMessages(60)
 		shell.NewBranch("feature/demo")
 
+		shell.CreateNCommitsWithRandomMessages(10)
+
 		shell.CloneIntoRemote("origin")
 
 		shell.SetBranchUpstream("feature/demo", "origin/feature/demo")
@@ -30,14 +30,18 @@ var InteractiveRebase = NewIntegrationTest(NewIntegrationTestArgs{
 
 		t.Views().Commits().
 			IsFocused().
-			NavigateToLine(Contains("Add TypeScript types to User module")).
-			Press(keys.Universal.Edit).
-			SelectPreviousItem().
-			Press(keys.Universal.Remove).
-			SelectPreviousItem().
-			Press(keys.Commits.SquashDown).
-			SelectPreviousItem().
+			Press(keys.Commits.StartInteractiveRebase).
+			PressFast(keys.Universal.RangeSelectDown).
+			PressFast(keys.Universal.RangeSelectDown).
 			Press(keys.Commits.MarkCommitAsFixup).
+			PressFast(keys.Commits.MoveDownCommit).
+			PressFast(keys.Commits.MoveDownCommit).
+			Delay().
+			SelectNextItem().
+			SelectNextItem().
+			Press(keys.Universal.Remove).
+			SelectNextItem().
+			Press(keys.Commits.SquashDown).
 			Press(keys.Universal.CreateRebaseOptionsMenu).
 			Tap(func() {
 				t.ExpectPopup().Menu().