upd

.gitignore

@@ -1 +1 @@
-kaks
+kks

cmd/edit.go

@@ -1,20 +1,46 @@
 package cmd
 
 import (
+	"fmt"
+	"log"
 	"os"
 	"os/exec"
+	"strings"
 	"syscall"
 )
 
 func Edit(filename, session, client string) {
-	kakBinary, lookErr := exec.LookPath("kak")
-	if lookErr != nil {
-		panic(lookErr)
+	if session != "" && client != "" {
+		kakCommand := fmt.Sprintf("edit %s", filename)
+		Send(kakCommand, session, client)
+		os.Exit(0)
 	}
 
-	kakExecArgs := []string{"kak", "-s", session, filename}
+	kakBinary, err := exec.LookPath("kak")
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	kakExecArgs := []string{"kak"}
+
+	sessions, err := exec.Command("kak", "-l").Output()
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	if session != "" && strings.Contains(string(sessions), session) {
+		kakExecArgs = append(kakExecArgs, "-c", session)
+	} else if session != "" {
+		// TODO: this gets killed if parent shell closes, use setsid?
+		kakExecArgs = append(kakExecArgs, "-s", session)
+	}
+
+	kakExecArgs = append(kakExecArgs, filename)
+
+	fmt.Print(kakExecArgs)
+
 	execErr := syscall.Exec(kakBinary, kakExecArgs, os.Environ())
 	if execErr != nil {
-		panic(execErr)
+		log.Fatal(err)
 	}
 }

go.mod

@@ -1,3 +1,3 @@
-module kaks
+module kks
 
 go 1.17

main.go

@@ -3,7 +3,7 @@ package main
 import (
 	"flag"
 	"fmt"
-	"kaks/cmd"
+	"kks/cmd"
 	"os"
 	"strings"
 )