Merge pull request #13 from ivanilves/no-shell

feat: decommission shell package

README.md

@@ -1,28 +1,27 @@
 # travelgrunt
 
-**T**ravel **T**erra**g**runt directory tree as a first class passenger! :sunglasses:
+Travel **[Terragrunt](https://terragrunt.gruntwork.io/)** directory tree as a first class passenger! :airplane:
 
 ## How to use?
 
 * `cd` to the directory of your [locally cloned] Terragrunt/Terraform Git repo;
-* run `travelgrunt` command there :rocket: ([optional] arguments are "path filter" matches);
-* use arrow keys to navigate the list and `/` key to search for specific projects;
+* run **tg** alias there :rocket: ([optional] arguments are "path filter" matches);
+* use arrow keys to navigate the list and `/` key to search for specific items;
 
 ## Shell aliases
 
-It is **highly** recommended to use `bash` (or `zsh`) aliases. Start from something like this:
+It is **absolutelly required** to use `bash` (or `zsh`) aliases. Start from something like this:
 ```
 alias tg='_tg(){ travelgrunt --out-file ~/.tg-path ${@} && cd "$(cat ~/.tg-path)" }; _tg'
 alias tt='_tt(){ travelgrunt --top --out-file ~/.tg-path && cd "$(cat ~/.tg-path)" }; _tt'
 ```
 
-:bulb: `travelgrunt --top` is a "shortcut" that brings you to the top level path of your repository.
+:bulb: **tt** is a "convenience alias" that brings you to the top level path of your repository.
 
 ### Why aliases?
-Core aspect of this program is the ability to change working directory while staying **inside the current shell**.
-This can not be done by the program itself, because of obvious security related `POSIX` limitations. Without instrumenting
-the shell with aliases `travelgrunt` still can kinda work, but will provide you with much more awkward and second class user
-experience, i.e. you will need to exit subshell before you "jump" to the next project. :weary:
+Core feature of this program is the ability to change working directory while staying **inside the current shell**.
+This **can not** be done by the program itself, because of `POSIX` security limitations. Without instrumenting
+the shell with aliases `travelgrunt` will not work!
 
 ## How to build?
 

cmd/travelgrunt/main.go

@@ -11,7 +11,6 @@ import (
 	"github.com/ivanilves/travelgrunt/pkg/filter"
 	"github.com/ivanilves/travelgrunt/pkg/menu"
 	"github.com/ivanilves/travelgrunt/pkg/scm"
-	"github.com/ivanilves/travelgrunt/pkg/shell"
 	"github.com/ivanilves/travelgrunt/pkg/terminal"
 )
 
@@ -28,7 +27,7 @@ func init() {
 }
 
 func usage() {
-	println("Usage: " + shell.Name() + " [<match> <match2> ... <matchN>]")
+	println("Usage: " + os.Args[0] + " [<match> <match2> ... <matchN>]")
 	println("")
 	println("Options:")
 	flag.PrintDefaults()
@@ -43,10 +42,6 @@ func writeFileAndExit(fileName string, data string) {
 }
 
 func main() {
-	if shell.IsRunningInside() {
-		log.Fatalf("%s already running (pid: %d), please type \"exit\" to return to the parent shell first", shell.Name(), shell.Getppid())
-	}
-
 	flag.Usage = usage
 	flag.Parse()
 
@@ -104,5 +99,5 @@ func main() {
 		writeFileAndExit(outFile, entries[selected])
 	}
 
-	shell.Spawn(entries[selected])
+	log.Fatal("Please configure shell aliases as described: https://github.com/ivanilves/travelgrunt#shell-aliases")
 }