From b0f28d178ad4e6325e418b3a94b5c5154e4a292e Mon Sep 17 00:00:00 2001
From: Michael Yang <git@mxy.ng>
Date: Tue, 8 Apr 2025 08:57:44 -0700
Subject: [PATCH] default max term height

---
 progress/bar.go      |  2 +-
 progress/progress.go | 18 ++++++++++++++++--
 2 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/progress/bar.go b/progress/bar.go
index 410b6e23f..f3d21a8fd 100644
--- a/progress/bar.go
+++ b/progress/bar.go
@@ -64,7 +64,7 @@ func formatDuration(d time.Duration) string {
 func (b *Bar) String() string {
 	termWidth, _, err := term.GetSize(int(os.Stderr.Fd()))
 	if err != nil {
-		termWidth = 80
+		termWidth = defaultTermWidth
 	}
 
 	var pre strings.Builder
diff --git a/progress/progress.go b/progress/progress.go
index 0cd0ea1f9..9f54275ec 100644
--- a/progress/progress.go
+++ b/progress/progress.go
@@ -4,8 +4,16 @@ import (
 	"bufio"
 	"fmt"
 	"io"
+	"os"
 	"sync"
 	"time"
+
+	"golang.org/x/term"
+)
+
+const (
+	defaultTermWidth  = 80
+	defaultTermHeight = 24
 )
 
 type State interface {
@@ -83,6 +91,11 @@ func (p *Progress) Add(key string, state State) {
 }
 
 func (p *Progress) render() {
+	_, termHeight, err := term.GetSize(int(os.Stderr.Fd()))
+	if err != nil {
+		termHeight = defaultTermHeight
+	}
+
 	p.mu.Lock()
 	defer p.mu.Unlock()
 
@@ -102,8 +115,9 @@ func (p *Progress) render() {
 	fmt.Fprint(p.w, "\033[1G")
 
 	// render progress lines
-	for i, state := range p.states {
-		fmt.Fprint(p.w, state.String(), "\033[K")
+	maxHeight := min(len(p.states), termHeight)
+	for i := len(p.states) - maxHeight; i < len(p.states); i++ {
+		fmt.Fprint(p.w, p.states[i].String(), "\033[K")
 		if i < len(p.states)-1 {
 			fmt.Fprint(p.w, "\n")
 		}