Add new flag `-i` that allows to create new windows inside current session

.gitignore

@@ -1,3 +1,4 @@
 coverage.out
 dist/
 smug
+test_configs/

README.md

@@ -82,6 +82,7 @@ smug <command> [<project>] [-f, --file <file>] [-w, --windows <window>]... [-a,
 -f, --file A custom path to a config file
 -w, --windows List of windows to start. If session exists, those windows will be attached to current session.
 -a, --attach Force switch client for a session
+-i, --inside-current-session Create all windows inside current session
 -d, --debug Print all commands to ~/.config/smug/smug.log
 --detach Detach session. The same as `-d` flag in the tmux
 ```

main.go

@@ -16,13 +16,15 @@ var usage = fmt.Sprintf(`Smug - tmux session manager. Version %s
 
 
 Usage:
-	smug <command> [<project>] [-f, --file <file>] [-w, --windows <window>]... [-a, --attach] [-d, --debug] [<key>=<value>]...
+	smug <command> [<project>] [-f, --file <file>] [-w, --windows <window>]... [-a, --attach] [-d, --debug] [--detach] [-i, --inside-current-session] [<key>=<value>]...
 
 Options:
 	-f, --file %s
 	-w, --windows %s
 	-a, --attach %s
+	-i, --inside-current-session %s
 	-d, --debug %s
+	--detach %s
 
 Commands:
 	list    list available project configurations
@@ -43,7 +45,7 @@ Examples:
 	$ smug stop blog
 	$ smug start blog --attach
 	$ smug print > ~/.config/smug/blog.yml
-`, version, FileUsage, WindowsUsage, AttachUsage, DebugUsage)
+`, version, FileUsage, WindowsUsage, AttachUsage, InsideCurrentSessionUsage, DebugUsage, DetachUsage)
 
 func main() {
 	options, err := ParseOptions(os.Args[1:], func() {

options.go

@@ -19,24 +19,26 @@ const (
 var validCommands = []string{CommandStart, CommandStop, CommandNew, CommandEdit, CommandList, CommandPrint}
 
 type Options struct {
-	Command  string
-	Project  string
-	Config   string
-	Windows  []string
-	Settings map[string]string
-	Attach   bool
-	Detach   bool
-	Debug    bool
+	Command              string
+	Project              string
+	Config               string
+	Windows              []string
+	Settings             map[string]string
+	Attach               bool
+	Detach               bool
+	Debug                bool
+	InsideCurrentSession bool
 }
 
 var ErrHelp = errors.New("help requested")
 
 const (
-	WindowsUsage = "List of windows to start. If session exists, those windows will be attached to current session."
-	AttachUsage  = "Force switch client for a session"
-	DetachUsage  = "Detach tmux session. The same as -d flag in the tmux"
-	DebugUsage   = "Print all commands to ~/.config/smug/smug.log"
-	FileUsage    = "A custom path to a config file"
+	WindowsUsage              = "List of windows to start. If session exists, those windows will be attached to current session"
+	AttachUsage               = "Force switch client for a session"
+	DetachUsage               = "Detach tmux session. The same as -d flag in the tmux"
+	DebugUsage                = "Print all commands to ~/.config/smug/smug.log"
+	FileUsage                 = "A custom path to a config file"
+	InsideCurrentSessionUsage = "Create all windows inside current session"
 )
 
 // Creates a new FlagSet.
@@ -70,6 +72,7 @@ func ParseOptions(argv []string, helpRequested func()) (Options, error) {
 	attach := flags.BoolP("attach", "a", false, AttachUsage)
 	detach := flags.Bool("detach", false, DetachUsage)
 	debug := flags.BoolP("debug", "d", false, DebugUsage)
+	insideCurrentSession := flags.BoolP("inside-current-session", "i", false, InsideCurrentSessionUsage)
 
 	err := flags.Parse(argv)
 
@@ -106,13 +109,14 @@ func ParseOptions(argv []string, helpRequested func()) (Options, error) {
 	}
 
 	return Options{
-		Project:  project,
-		Config:   *config,
-		Command:  cmd,
-		Settings: settings,
-		Windows:  *windows,
-		Attach:   *attach,
-		Detach:   *detach,
-		Debug:    *debug,
+		Project:              project,
+		Config:               *config,
+		Command:              cmd,
+		Settings:             settings,
+		Windows:              *windows,
+		Attach:               *attach,
+		Detach:               *detach,
+		Debug:                *debug,
+		InsideCurrentSession: *insideCurrentSession,
 	}, nil
 }

smug.go

@@ -72,6 +72,7 @@ func (smug Smug) switchOrAttach(target string, attach bool, insideTmuxSession bo
 	} else if !insideTmuxSession {
 		return smug.tmux.Attach(target, os.Stdin, os.Stdout, os.Stderr)
 	}
+
 	return nil
 }
 
@@ -126,7 +127,7 @@ func (smug Smug) Start(config Config, options Options, context Context) error {
 		if err != nil {
 			return err
 		}
-	} else if len(windows) == 0 {
+	} else if len(windows) == 0 && !options.InsideCurrentSession {
 		return smug.switchOrAttach(sessionName, attach, context.InsideTmuxSession)
 	}
 
@@ -191,8 +192,10 @@ func (smug Smug) Start(config Config, options Options, context Context) error {
 		}
 	}
 
-	smug.tmux.KillWindow(sessionName + defaultWindowName)
-	smug.tmux.RenumberWindows(sessionName)
+	if !options.InsideCurrentSession {
+		smug.tmux.KillWindow(sessionName + defaultWindowName)
+		smug.tmux.RenumberWindows(sessionName)
+	}
 
 	if len(windows) == 0 && len(config.Windows) > 0 && options.Detach == false {
 		return smug.switchOrAttach(sessionName+config.Windows[0].Name, attach, context.InsideTmuxSession)

smug_test.go

@@ -212,6 +212,28 @@ var testTable = map[string]struct {
 		},
 		[]string{""},
 	},
+	"test create new windows in current session": {
+		Config{
+			Session: "ses",
+			Root:    "root",
+			Windows: []Window{
+				{Name: "win1"},
+			},
+		},
+		Options{
+			InsideCurrentSession: true,
+		},
+		Context{InsideTmuxSession: true},
+		[]string{
+			"tmux has-session -t ses:",
+			"tmux neww -Pd -t ses: -c root -F #{window_id} -n win1",
+			"tmux select-layout -t  even-horizontal",
+		},
+		[]string{
+			"tmux kill-session -t ses",
+		},
+		[]string{""},
+	},
 }
 
 type MockCommander struct {