From 7c91cb45a4bdb2025c9210cc6aabb4a426c282dd Mon Sep 17 00:00:00 2001
From: Mohamed Mahmoud <152813205+Haroka-74@users.noreply.github.com>
Date: Tue, 28 Apr 2026 12:47:52 +0300
Subject: [PATCH] fix: handle zero terminal cell height (#1184)

## What?

Added a check for `cellHeight == 0` in the `imageRows` function within
`view/html.go`. If the terminal height cannot be determined, it now
defaults to a standard `16px` fallback.

## Why?

When running in terminals that don't report cell size via `ioctl`,
`getTerminalCellSize()` returns `0`. This previously caused a "division
by zero" runtime panic during the row calculation for inline images: `(h
+ cellHeight - 1) / cellHeight`.

Closes #865
---
 view/html.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/view/html.go b/view/html.go
index ba3846e6dbc1ddfbde393d8225967c56dd6c0405..f83b31dd86571c198aceea7a48c6cb725a783561 100644
--- a/view/html.go
+++ b/view/html.go
@@ -509,6 +509,9 @@ func imageRows(payload string) int {
 	if data, err := base64.StdEncoding.DecodeString(payload); err == nil {
 		if _, h, ok := clib.ImageDimensions(data); ok {
 			cellHeight := getTerminalCellSize()
+			if cellHeight == 0 {
+				cellHeight = 16
+			}
 			rows = (h + cellHeight - 1) / cellHeight
 			if rows < 1 {
 				rows = 1