From b7015f17a49501e99642009ebadabcbefc0fbad0 Mon Sep 17 00:00:00 2001
From: Ogulcan Celik <ogulcancelik@gmail.com>
Date: Tue, 30 Jun 2026 15:55:13 +0300
Subject: fix: render ansi undercurl styles

refs #895
---
 src/ghostty/mod.rs | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'src/ghostty')

diff --git a/src/ghostty/mod.rs b/src/ghostty/mod.rs
index 3800ab49..8a909b8c 100644
--- a/src/ghostty/mod.rs
+++ b/src/ghostty/mod.rs
@@ -353,6 +353,7 @@ pub struct CellStyle {
     pub invisible: bool,
     pub strikethrough: bool,
     pub overline: bool,
+    pub underline: u8,
     pub underlined: bool,
 }
 
@@ -370,11 +371,19 @@ impl From<ffi::GhosttyStyle> for CellStyle {
             invisible: value.invisible,
             strikethrough: value.strikethrough,
             overline: value.overline,
+            underline: normalize_underline_style(value.underline),
             underlined: value.underline != 0,
         }
     }
 }
 
+fn normalize_underline_style(value: std::os::raw::c_int) -> u8 {
+    match value {
+        0..=5 => value as u8,
+        _ => 1,
+    }
+}
+
 fn cell_color_from_style_color(color: ffi::GhosttyStyleColor) -> Option<CellColor> {
     match color.tag {
         ffi::GhosttyStyleColorTag_GHOSTTY_STYLE_COLOR_PALETTE => {
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