3 files changed, 20 insertions, 4 deletions
diff --git a/alacritty_terminal/src/ansi.rs b/alacritty_terminal/src/ansi.rs
index 91dd3540..8475685d 100644
--- a/alacritty_terminal/src/ansi.rs
+++ b/alacritty_terminal/src/ansi.rs
@@ -772,6 +772,10 @@ pub enum Attr {
     DoubleUnderline,
     /// Undercurled text.
     Undercurl,
+    /// Dotted underlined text.
+    DottedUnderline,
+    /// Dashed underlined text.
+    DashedUnderline,
     /// Blink cursor slowly.
     BlinkSlow,
     /// Blink cursor fast.
@@ -1332,6 +1336,8 @@ fn attrs_from_sgr_parameters(params: &mut ParamsIter<'_>) -> Vec<Option<Attr>> {
             [4, 0] => Some(Attr::CancelUnderline),
             [4, 2] => Some(Attr::DoubleUnderline),
             [4, 3] => Some(Attr::Undercurl),
+            [4, 4] => Some(Attr::DottedUnderline),
+            [4, 5] => Some(Attr::DashedUnderline),
             [4, ..] => Some(Attr::Underline),
             [5] => Some(Attr::BlinkSlow),
             [6] => Some(Attr::BlinkFast),
diff --git a/alacritty_terminal/src/term/cell.rs b/alacritty_terminal/src/term/cell.rs
index 49d25eb3..2af1fbac 100644
--- a/alacritty_terminal/src/term/cell.rs
+++ b/alacritty_terminal/src/term/cell.rs
@@ -25,7 +25,11 @@ bitflags! {
         const LEADING_WIDE_CHAR_SPACER  = 0b0000_0100_0000_0000;
         const DOUBLE_UNDERLINE          = 0b0000_1000_0000_0000;
         const UNDERCURL                 = 0b0001_0000_0000_0000;
-        const ALL_UNDERLINES            = Self::UNDERLINE.bits | Self::DOUBLE_UNDERLINE.bits | Self::UNDERCURL.bits;
+        const DOTTED_UNDERLINE          = 0b0010_0000_0000_0000;
+        const DASHED_UNDERLINE          = 0b0100_0000_0000_0000;
+        const ALL_UNDERLINES            = Self::UNDERLINE.bits | Self::DOUBLE_UNDERLINE.bits
+                                        | Self::UNDERCURL.bits | Self::DOTTED_UNDERLINE.bits
+                                        | Self::DASHED_UNDERLINE.bits;
     }
 }
 
@@ -119,9 +123,7 @@ impl GridCell for Cell {
             && self.fg == Color::Named(NamedColor::Foreground)
             && !self.flags.intersects(
                 Flags::INVERSE
-                    | Flags::UNDERLINE
-                    | Flags::DOUBLE_UNDERLINE
-                    | Flags::UNDERCURL
+                    | Flags::ALL_UNDERLINES
                     | Flags::STRIKEOUT
                     | Flags::WRAPLINE
                     | Flags::WIDE_CHAR_SPACER
diff --git a/alacritty_terminal/src/term/mod.rs b/alacritty_terminal/src/term/mod.rs
index 4d30602b..5ad1b4ad 100644
--- a/alacritty_terminal/src/term/mod.rs
+++ b/alacritty_terminal/src/term/mod.rs
@@ -1850,6 +1850,14 @@ impl<T: EventListener> Handler for Term<T> {
                 cursor.template.flags.remove(Flags::ALL_UNDERLINES);
                 cursor.template.flags.insert(Flags::UNDERCURL);
             },
+            Attr::DottedUnderline => {
+                cursor.template.flags.remove(Flags::ALL_UNDERLINES);
+                cursor.template.flags.insert(Flags::DOTTED_UNDERLINE);
+            },
+            Attr::DashedUnderline => {
+                cursor.template.flags.remove(Flags::ALL_UNDERLINES);
+                cursor.template.flags.insert(Flags::DASHED_UNDERLINE);
+            },
             Attr::CancelUnderline => cursor.template.flags.remove(Flags::ALL_UNDERLINES),
             Attr::Hidden => cursor.template.flags.insert(Flags::HIDDEN),
             Attr::CancelHidden => cursor.template.flags.remove(Flags::HIDDEN),