fix: render ansi undercurl styles

refs #895

1 files changed, 9 insertions, 0 deletions

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 => {