Fix incorrect categorization of ANSI SGR sequences.

CHANGELOG.md

@@ -7,6 +7,7 @@
 - Fix long file name wrapping in header, see #2835 (@FilipRazek)
 - Fix `NO_COLOR` support, see #2767 (@acuteenvy)
 - Fix handling of inputs with OSC ANSI escape sequences, see #2541 and #2544 (@eth-p)
+- Fix handling of inputs with combined ANSI color and attribute sequences, see #2185 and #2856 (@eth-p)
 - Fix panel width when line 10000 wraps, see #2854 (@eth-p)
 
 ## Other

src/vscreen.rs

@@ -169,10 +169,10 @@ impl Attributes {
         while let Some(p) = iter.next() {
             match p {
                 0 => self.sgr_reset(),
-                1 => self.bold = format!("\x1B[{}m", parameters),
-                2 => self.dim = format!("\x1B[{}m", parameters),
-                3 => self.italic = format!("\x1B[{}m", parameters),
-                4 => self.underline = format!("\x1B[{}m", parameters),
+                1 => self.bold = "\x1B[1m".to_owned(),
+                2 => self.dim = "\x1B[2m".to_owned(),
+                3 => self.italic = "\x1B[3m".to_owned(),
+                4 => self.underline = "\x1B[4m".to_owned(),
                 23 => self.italic.clear(),
                 24 => self.underline.clear(),
                 22 => {
@@ -183,7 +183,7 @@ impl Attributes {
                 40..=49 => self.background = Self::parse_color(p, &mut iter),
                 58..=59 => self.underlined = Self::parse_color(p, &mut iter),
                 90..=97 => self.foreground = Self::parse_color(p, &mut iter),
-                100..=107 => self.foreground = Self::parse_color(p, &mut iter),
+                100..=107 => self.background = Self::parse_color(p, &mut iter),
                 _ => {
                     // Unsupported SGR sequence.
                     // Be compatible and pretend one just wasn't was provided.
@@ -890,4 +890,37 @@ mod tests {
         );
         assert_eq!(iter.next(), None);
     }
+
+    #[test]
+    fn test_sgr_attributes_do_not_leak_into_wrong_field() {
+        let mut attrs = crate::vscreen::Attributes::new();
+
+        // Bold, Dim, Italic, Underline, Foreground, Background
+        attrs.update(EscapeSequence::CSI {
+            raw_sequence: "\x1B[1;2;3;4;31;41m",
+            parameters: "1;2;3;4;31;41",
+            intermediates: "",
+            final_byte: "m",
+        });
+
+        assert_eq!(attrs.bold, "\x1B[1m");
+        assert_eq!(attrs.dim, "\x1B[2m");
+        assert_eq!(attrs.italic, "\x1B[3m");
+        assert_eq!(attrs.underline, "\x1B[4m");
+        assert_eq!(attrs.foreground, "\x1B[31m");
+        assert_eq!(attrs.background, "\x1B[41m");
+
+        // Bold, Bright Foreground, Bright Background
+        attrs.sgr_reset();
+        attrs.update(EscapeSequence::CSI {
+            raw_sequence: "\x1B[1;94;103m",
+            parameters: "1;94;103",
+            intermediates: "",
+            final_byte: "m",
+        });
+
+        assert_eq!(attrs.bold, "\x1B[1m");
+        assert_eq!(attrs.foreground, "\x1B[94m");
+        assert_eq!(attrs.background, "\x1B[103m");
+    }
 }