From b76e1c7307c6ecd10479b8fd76514c3ec5974abe Mon Sep 17 00:00:00 2001
From: David Hulick <dave.hulick@gmail.com>
Date: Wed, 28 Feb 2024 15:10:35 -0500
Subject: [PATCH] feat: add -s (silent) support for read builtin

---
 interp/builtin.go | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/interp/builtin.go b/interp/builtin.go
index b24a3d6a..42c07c1d 100644
--- a/interp/builtin.go
+++ b/interp/builtin.go
@@ -14,9 +14,11 @@ import (
 	"path/filepath"
 	"strconv"
 	"strings"
+	"syscall"
 
 	"mvdan.cc/sh/v3/expand"
 	"mvdan.cc/sh/v3/syntax"
+	"golang.org/x/term"
 )
 
 func isBuiltin(name string) bool {
@@ -559,10 +561,15 @@ func (r *Runner) builtinCode(ctx context.Context, pos syntax.Pos, name string, a
 		r.setErr(returnStatus(code))
 	case "read":
 		var prompt string
+		var line []byte
+		var err error
 		raw := false
+		silent := false
 		fp := flagParser{remaining: args}
 		for fp.more() {
 			switch flag := fp.flag(); flag {
+			case "-s":
+				silent = true
 			case "-r":
 				raw = true
 			case "-p":
@@ -589,7 +596,12 @@ func (r *Runner) builtinCode(ctx context.Context, pos syntax.Pos, name string, a
 			r.out(prompt)
 		}
 
-		line, err := r.readLine(raw)
+		if silent {
+			line, err = term.ReadPassword(int(syscall.Stdin))
+		}else{
+			line, err = r.readLine(raw)
+		}
+
 		if err != nil {
 			return 1
 		}