diff --git a/pkg/gui/controllers/global_controller.go b/pkg/gui/controllers/global_controller.go
index e59231739..dac1bbc08 100644
--- a/pkg/gui/controllers/global_controller.go
+++ b/pkg/gui/controllers/global_controller.go
@@ -1,6 +1,8 @@
 package controllers
 
 import (
+	"strings"
+
 	"github.com/jesseduffield/generics/slices"
 	"github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers"
 	"github.com/jesseduffield/lazygit/pkg/gui/types"
@@ -37,10 +39,12 @@ func (self *GlobalController) customCommand() error {
 		Title:               self.c.Tr.CustomCommand,
 		FindSuggestionsFunc: self.GetCustomCommandsHistorySuggestionsFunc(),
 		HandleConfirm: func(command string) error {
-			self.c.GetAppState().CustomCommandsHistory = utils.Limit(
-				lo.Uniq(append(self.c.GetAppState().CustomCommandsHistory, command)),
-				1000,
-			)
+			if self.shouldSaveCommand(command) {
+				self.c.GetAppState().CustomCommandsHistory = utils.Limit(
+					lo.Uniq(append(self.c.GetAppState().CustomCommandsHistory, command)),
+					1000,
+				)
+			}
 
 			err := self.c.SaveAppState()
 			if err != nil {
@@ -55,6 +59,12 @@ func (self *GlobalController) customCommand() error {
 	})
 }
 
+// this mimics the shell functionality `ignorespace`
+// which doesn't save a command to history if it starts with a space
+func (self *GlobalController) shouldSaveCommand(command string) bool {
+	return !strings.HasPrefix(command, " ")
+}
+
 func (self *GlobalController) GetCustomCommandsHistorySuggestionsFunc() func(string) []*types.Suggestion {
 	// reversing so that we display the latest command first
 	history := slices.Reverse(self.c.GetAppState().CustomCommandsHistory)
diff --git a/pkg/integration/tests/custom_commands/basic_at_runtime.go b/pkg/integration/tests/custom_commands/basic_at_runtime.go
new file mode 100644
index 000000000..96b9b9174
--- /dev/null
+++ b/pkg/integration/tests/custom_commands/basic_at_runtime.go
@@ -0,0 +1,35 @@
+package custom_commands
+
+import (
+	"github.com/jesseduffield/lazygit/pkg/config"
+	. "github.com/jesseduffield/lazygit/pkg/integration/components"
+)
+
+var BasicCmdAtRuntime = NewIntegrationTest(NewIntegrationTestArgs{
+	Description:  "Using a custom command provided at runtime to create a new file",
+	ExtraCmdArgs: "",
+	Skip:         false,
+	SetupRepo: func(shell *Shell) {
+		shell.EmptyCommit("blah")
+	},
+	SetupConfig: func(cfg *config.AppConfig) {},
+	Run: func(t *TestDriver, keys config.KeybindingConfig) {
+		t.Views().Files().
+			IsEmpty().
+			IsFocused().
+			Press(keys.Universal.ExecuteCustomCommand)
+
+		t.ExpectPopup().Prompt().
+			Title(Equals("Custom Command:")).
+			Type("touch file.txt").
+			Confirm()
+
+		t.GlobalPress(keys.Files.RefreshFiles)
+
+		t.Views().Files().
+			IsFocused().
+			Lines(
+				Contains("file.txt"),
+			)
+	},
+})
diff --git a/pkg/integration/tests/custom_commands/basic_at_runtime_history.go b/pkg/integration/tests/custom_commands/basic_at_runtime_history.go
new file mode 100644
index 000000000..40cf5b328
--- /dev/null
+++ b/pkg/integration/tests/custom_commands/basic_at_runtime_history.go
@@ -0,0 +1,38 @@
+package custom_commands
+
+import (
+	"github.com/jesseduffield/lazygit/pkg/config"
+	. "github.com/jesseduffield/lazygit/pkg/integration/components"
+)
+
+var OmitFromHistory = NewIntegrationTest(NewIntegrationTestArgs{
+	Description:  "Omitting a runtime custom command from history if it begins with space",
+	ExtraCmdArgs: "",
+	Skip:         false,
+	SetupRepo: func(shell *Shell) {
+		shell.EmptyCommit("blah")
+	},
+	SetupConfig: func(cfg *config.AppConfig) {},
+	Run: func(t *TestDriver, keys config.KeybindingConfig) {
+		t.GlobalPress(keys.Universal.ExecuteCustomCommand)
+		t.ExpectPopup().Prompt().
+			Title(Equals("Custom Command:")).
+			Type("echo aubergine").
+			Confirm()
+
+		t.GlobalPress(keys.Universal.ExecuteCustomCommand)
+		t.ExpectPopup().Prompt().
+			Title(Equals("Custom Command:")).
+			SuggestionLines(Contains("aubergine")).
+			SuggestionLines(DoesNotContain("tangerine")).
+			Type(" echo tangerine").
+			Confirm()
+
+		t.GlobalPress(keys.Universal.ExecuteCustomCommand)
+		t.ExpectPopup().Prompt().
+			Title(Equals("Custom Command:")).
+			SuggestionLines(Contains("aubergine")).
+			SuggestionLines(DoesNotContain("tangerine")).
+			Cancel()
+	},
+})
diff --git a/pkg/integration/tests/custom_commands/basic.go b/pkg/integration/tests/custom_commands/basic_from_config.go
similarity index 90%
rename from pkg/integration/tests/custom_commands/basic.go
rename to pkg/integration/tests/custom_commands/basic_from_config.go
index ce500b9a6..0f15183d9 100644
--- a/pkg/integration/tests/custom_commands/basic.go
+++ b/pkg/integration/tests/custom_commands/basic_from_config.go
@@ -5,7 +5,7 @@ import (
 	. "github.com/jesseduffield/lazygit/pkg/integration/components"
 )
 
-var Basic = NewIntegrationTest(NewIntegrationTestArgs{
+var BasicCmdFromConfig = NewIntegrationTest(NewIntegrationTestArgs{
 	Description:  "Using a custom command to create a new file",
 	ExtraCmdArgs: "",
 	Skip:         false,
diff --git a/pkg/integration/tests/test_list.go b/pkg/integration/tests/test_list.go
index fae655cbc..b44246abf 100644
--- a/pkg/integration/tests/test_list.go
+++ b/pkg/integration/tests/test_list.go
@@ -64,7 +64,9 @@ var tests = []*components.IntegrationTest{
 	conflicts.ResolveExternally,
 	conflicts.ResolveMultipleFiles,
 	conflicts.UndoChooseHunk,
-	custom_commands.Basic,
+	custom_commands.BasicCmdFromConfig,
+	custom_commands.BasicCmdAtRuntime,
+	custom_commands.OmitFromHistory,
 	custom_commands.FormPrompts,
 	custom_commands.MenuFromCommand,
 	custom_commands.MenuFromCommandsOutput,