From d274d093afa667a6ac5ee34579807de195ade784 Mon Sep 17 00:00:00 2001
From: Junegunn Choi <junegunn.c@gmail.com>
Date: Tue, 14 May 2024 16:29:22 +0900
Subject: Render UI directly to /dev/tty

See https://github.com/junegunn/fzf/discussions/3792

This allows us to separately capture the standard error from fzf and its
child processes, and there's less chance of user errors of redirecting
the error stream and hiding fzf.
---
 src/tui/light.go | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

(limited to 'src/tui/light.go')

diff --git a/src/tui/light.go b/src/tui/light.go
index 3ef8b60e..4d3f58a4 100644
--- a/src/tui/light.go
+++ b/src/tui/light.go
@@ -73,7 +73,7 @@ func (r *LightRenderer) csi(code string) string {
 
 func (r *LightRenderer) flush() {
 	if r.queued.Len() > 0 {
-		fmt.Fprint(os.Stderr, "\x1b[?7l\x1b[?25l"+r.queued.String()+"\x1b[?25h\x1b[?7h")
+		fmt.Fprint(r.ttyout, "\x1b[?7l\x1b[?25l"+r.queued.String()+"\x1b[?25h\x1b[?7h")
 		r.queued.Reset()
 	}
 }
@@ -88,6 +88,7 @@ type LightRenderer struct {
 	prevDownTime  time.Time
 	clicks        [][2]int
 	ttyin         *os.File
+	ttyout        *os.File
 	buffer        []byte
 	origState     *term.State
 	width         int
@@ -131,6 +132,10 @@ func NewLightRenderer(theme *ColorTheme, forceBlack bool, mouse bool, tabstop in
 	if err != nil {
 		return nil, err
 	}
+	out, err := openTtyOut()
+	if err != nil {
+		out = os.Stderr
+	}
 	r := LightRenderer{
 		closed:        util.NewAtomicBool(false),
 		theme:         theme,
@@ -138,6 +143,7 @@ func NewLightRenderer(theme *ColorTheme, forceBlack bool, mouse bool, tabstop in
 		mouse:         mouse,
 		clearOnExit:   clearOnExit,
 		ttyin:         in,
+		ttyout:        out,
 		yoffset:       0,
 		tabstop:       tabstop,
 		fullscreen:    fullscreen,
-- 
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