introduce edit command template to open a specifig line of a file

docs/Config.md

@@ -64,7 +64,8 @@ git:
   disableForcePushing: false
   parseEmoji: false
 os:
-  editCommand: '' # see 'Configuring File Editing' section
+  editor: '' # see 'Configuring File Editing' section
+  editCommand: '{{editor}} {{filename}}'
   openCommand: ''
 refresher:
   refreshInterval: 10 # file/submodule refresh interval in seconds
@@ -230,7 +231,7 @@ Lazygit will edit a file with the first set editor in the following:
 
 ```yaml
 os:
-  editCommand: 'vim' # as an example
+  editor: 'vim' # as an example
 ```
 
 2. \$(git config core.editor)

pkg/commands/files.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"os"
 	"path/filepath"
+	"strconv"
 	"time"
 
 	"github.com/go-errors/errors"
@@ -321,8 +322,8 @@ func (c *GitCommand) ResetAndClean() error {
 	return c.RemoveUntrackedFiles()
 }
 
-func (c *GitCommand) EditFileCmdStr(filename string) (string, error) {
-	editor := c.Config.GetUserConfig().OS.EditCommand
+func (c *GitCommand) EditFileCmdStr(filename string, lineNumber int) (string, error) {
+	editor := c.Config.GetUserConfig().OS.Editor
 
 	if editor == "" {
 		editor = c.GetConfigValue("core.editor")
@@ -346,5 +347,12 @@ func (c *GitCommand) EditFileCmdStr(filename string) (string, error) {
 		return "", errors.New("No editor defined in config file, $GIT_EDITOR, $VISUAL, $EDITOR, or git config")
 	}
 
-	return fmt.Sprintf("%s %s", editor, c.OSCommand.Quote(filename)), nil
+	templateValues := map[string]string{
+		"editor":   editor,
+		"filename": c.OSCommand.Quote(filename),
+		"line":     strconv.Itoa(lineNumber),
+	}
+
+	editTemplate := c.Config.GetUserConfig().OS.EditCommand
+	return utils.ResolvePlaceholderString(editTemplate, templateValues), nil
 }

pkg/commands/files_test.go

@@ -742,6 +742,7 @@ func TestGitCommandRemoveUntrackedFiles(t *testing.T) {
 func TestEditFileCmdStr(t *testing.T) {
 	type scenario struct {
 		filename          string
+		configEditor      string
 		configEditCommand string
 		command           func(string, ...string) *exec.Cmd
 		getenv            func(string) string
@@ -753,6 +754,7 @@ func TestEditFileCmdStr(t *testing.T) {
 		{
 			"test",
 			"",
+			"{{editor}} {{filename}}",
 			func(name string, arg ...string) *exec.Cmd {
 				return secureexec.Command("exit", "1")
 			},
@@ -769,6 +771,7 @@ func TestEditFileCmdStr(t *testing.T) {
 		{
 			"test",
 			"nano",
+			"{{editor}} {{filename}}",
 			func(name string, args ...string) *exec.Cmd {
 				assert.Equal(t, "which", name)
 				return secureexec.Command("echo")
@@ -787,6 +790,7 @@ func TestEditFileCmdStr(t *testing.T) {
 		{
 			"test",
 			"",
+			"{{editor}} {{filename}}",
 			func(name string, arg ...string) *exec.Cmd {
 				assert.Equal(t, "which", name)
 				return secureexec.Command("exit", "1")
@@ -805,6 +809,7 @@ func TestEditFileCmdStr(t *testing.T) {
 		{
 			"test",
 			"",
+			"{{editor}} {{filename}}",
 			func(name string, arg ...string) *exec.Cmd {
 				assert.Equal(t, "which", name)
 				return secureexec.Command("exit", "1")
@@ -826,6 +831,7 @@ func TestEditFileCmdStr(t *testing.T) {
 		{
 			"test",
 			"",
+			"{{editor}} {{filename}}",
 			func(name string, arg ...string) *exec.Cmd {
 				assert.Equal(t, "which", name)
 				return secureexec.Command("exit", "1")
@@ -848,6 +854,7 @@ func TestEditFileCmdStr(t *testing.T) {
 		{
 			"test",
 			"",
+			"{{editor}} {{filename}}",
 			func(name string, arg ...string) *exec.Cmd {
 				assert.Equal(t, "which", name)
 				return secureexec.Command("echo")
@@ -866,6 +873,7 @@ func TestEditFileCmdStr(t *testing.T) {
 		{
 			"file/with space",
 			"",
+			"{{editor}} {{filename}}",
 			func(name string, args ...string) *exec.Cmd {
 				assert.Equal(t, "which", name)
 				return secureexec.Command("echo")
@@ -881,14 +889,34 @@ func TestEditFileCmdStr(t *testing.T) {
 				assert.Equal(t, "vi \"file/with space\"", cmdStr)
 			},
 		},
+		{
+			"open file/at line",
+			"vim",
+			"{{editor}} +{{line}} {{filename}}",
+			func(name string, args ...string) *exec.Cmd {
+				assert.Equal(t, "which", name)
+				return secureexec.Command("echo")
+			},
+			func(env string) string {
+				return ""
+			},
+			func(cf string) (string, error) {
+				return "", nil
+			},
+			func(cmdStr string, err error) {
+				assert.NoError(t, err)
+				assert.Equal(t, "vim +1 \"open file/at line\"", cmdStr)
+			},
+		},
 	}
 
 	for _, s := range scenarios {
 		gitCmd := NewDummyGitCommand()
+		gitCmd.Config.GetUserConfig().OS.Editor = s.configEditor
 		gitCmd.Config.GetUserConfig().OS.EditCommand = s.configEditCommand
 		gitCmd.OSCommand.Command = s.command
 		gitCmd.OSCommand.Getenv = s.getenv
 		gitCmd.getGitConfigValue = s.getGitConfigValue
-		s.test(gitCmd.EditFileCmdStr(s.filename))
+		s.test(gitCmd.EditFileCmdStr(s.filename, 1))
 	}
 }

pkg/config/config_default_platform.go

@@ -5,7 +5,8 @@ package config
 // GetPlatformDefaultConfig gets the defaults for the platform
 func GetPlatformDefaultConfig() OSConfig {
 	return OSConfig{
-		EditCommand:     ``,
+		Editor:          ``,
+		EditCommand:     `{{editor}} {{filename}}`,
 		OpenCommand:     "open {{filename}}",
 		OpenLinkCommand: "open {{link}}",
 	}

pkg/config/config_linux.go

@@ -3,7 +3,8 @@ package config
 // GetPlatformDefaultConfig gets the defaults for the platform
 func GetPlatformDefaultConfig() OSConfig {
 	return OSConfig{
-		EditCommand:     ``,
+		Editor:          ``,
+		EditCommand:     `{{editor}} {{filename}}`,
 		OpenCommand:     `sh -c "xdg-open {{filename}} >/dev/null"`,
 		OpenLinkCommand: `sh -c "xdg-open {{link}} >/dev/null"`,
 	}

pkg/config/config_windows.go

@@ -3,7 +3,8 @@ package config
 // GetPlatformDefaultConfig gets the defaults for the platform
 func GetPlatformDefaultConfig() OSConfig {
 	return OSConfig{
-		EditCommand:     ``,
+		Editor:          ``,
+		EditCommand:     `{{editor}} {{filename}}`,
 		OpenCommand:     `cmd /c "start "" {{filename}}"`,
 		OpenLinkCommand: `cmd /c "start "" {{link}}"`,
 	}

pkg/config/user_config.go

@@ -252,7 +252,10 @@ type KeybindingSubmodulesConfig struct {
 
 // OSConfig contains config on the level of the os
 type OSConfig struct {
-	// EditCommand is the command for editing a file
+	// Editor is the command for editing a file
+	Editor string `yaml:"editor,omitempty"`
+
+	// EditCommand is the command template for editing a file
 	EditCommand string `yaml:"editCommand,omitempty"`
 
 	// OpenCommand is the command for opening a file

pkg/gui/files_panel.go

@@ -474,13 +474,17 @@ func (gui *Gui) handleCommitEditorPress() error {
 }
 
 func (gui *Gui) editFile(filename string) error {
-	cmdStr, err := gui.GitCommand.EditFileCmdStr(filename)
+	return gui.editFileAtLine(filename, 1)
+}
+
+func (gui *Gui) editFileAtLine(filename string, lineNumber int) error {
+	cmdStr, err := gui.GitCommand.EditFileCmdStr(filename, lineNumber)
 	if err != nil {
 		return gui.surfaceError(err)
 	}
 
 	return gui.runSubprocessWithSuspenseAndRefresh(
-		gui.OSCommand.WithSpan(gui.Tr.Spans.EditFile).PrepareShellSubProcess(cmdStr),
+		gui.OSCommand.WithSpan(gui.Tr.Spans.EditFile).ShellCommandFromString(cmdStr),
 	)
 }
 

pkg/gui/keybindings.go

@@ -1301,7 +1301,7 @@ func (gui *Gui) GetInitialKeybindings() []*Binding {
 			ViewName:    "main",
 			Contexts:    []string{string(MAIN_STAGING_CONTEXT_KEY)},
 			Key:         gui.getKey(config.Universal.Edit),
-			Handler:     gui.handleFileEdit,
+			Handler:     gui.handleLineByLineEdit,
 			Description: gui.Tr.LcEditFile,
 		},
 		{

pkg/gui/line_by_line_panel.go

@@ -272,3 +272,14 @@ func (gui *Gui) withLBLActiveCheck(f func(*LblPanelState) error) error {
 
 	return f(state)
 }
+
+func (gui *Gui) handleLineByLineEdit() error {
+	file := gui.getSelectedFile()
+	if file == nil {
+		return nil
+	}
+
+	lineNumber := gui.State.Panels.LineByLine.CurrentLineNumber()
+
+	return gui.editFileAtLine(file.Name, lineNumber)
+}