change liner source so that we can have good tty config

cmd/shs.go

@@ -21,7 +21,7 @@ import (
     "os"
     "fmt"
     "strconv"
-    "github.com/peterh/liner"
+    "github.com/candid82/liner"
     "gitlab.com/whom/shs/ast"
     "gitlab.com/whom/shs/log"
     "gitlab.com/whom/shs/util"
@@ -109,6 +109,12 @@ func main() {
     line := liner.NewLiner()
     defer line.Close()
 
+    if !liner.TerminalSupported() {
+        log.Log(log.ERR,
+            "Terminal unsupported, continuing in dummy mode!",
+            "init")
+    }
+
     line.SetCtrlCAborts(true)
     line.SetCompleter(func(line string) (c []string) {
         return util.ShellCompleter(line, vars, funcs)