Don't stage already staged deleted items

pkg/integration/tests/file/stage_deleted_range_select.go

@@ -0,0 +1,50 @@
+package file
+
+import (
+	"github.com/jesseduffield/lazygit/pkg/config"
+	. "github.com/jesseduffield/lazygit/pkg/integration/components"
+)
+
+var StageDeletedRangeSelect = NewIntegrationTest(NewIntegrationTestArgs{
+	Description:  "Stage a range of deleted files using range select",
+	ExtraCmdArgs: []string{},
+	Skip:         false,
+	SetupConfig: func(config *config.AppConfig) {
+	},
+	SetupRepo: func(shell *Shell) {
+		shell.CreateFileAndAdd("file-a", "")
+		shell.CreateFileAndAdd("file-b", "")
+		shell.Commit("first commit")
+
+		shell.DeleteFile("file-a")
+		shell.DeleteFile("file-b")
+	},
+	Run: func(t *TestDriver, keys config.KeybindingConfig) {
+		t.Views().Files().
+			IsFocused().
+			Lines(
+				Contains(" D").Contains("file-a").IsSelected(),
+				Contains(" D").Contains("file-b"),
+			).
+			// Stage a single deleted file
+			PressPrimaryAction().
+			Lines(
+				Contains("D ").Contains("file-a").IsSelected(),
+				Contains(" D").Contains("file-b"),
+			).
+			Press(keys.Universal.ToggleRangeSelect).
+			NavigateToLine(Contains("file-b")).
+			// Stage both files while a deleted file is already staged
+			PressPrimaryAction().
+			Lines(
+				Contains("D ").Contains("file-a").IsSelected(),
+				Contains("D ").Contains("file-b").IsSelected(),
+			).
+			// Unstage; back to everything being unstaged
+			PressPrimaryAction().
+			Lines(
+				Contains(" D").Contains("file-a").IsSelected(),
+				Contains(" D").Contains("file-b").IsSelected(),
+			)
+	},
+})

pkg/integration/tests/test_list.go

@@ -163,6 +163,7 @@ var tests = []*components.IntegrationTest{
 	file.RememberCommitMessageAfterFail,
 	file.RenameSimilarityThresholdChange,
 	file.StageChildrenRangeSelect,
+	file.StageDeletedRangeSelect,
 	file.StageRangeSelect,
 	filter_and_search.FilterCommitFiles,
 	filter_and_search.FilterFiles,