enable/disable autowrap

src/Window.zig

@@ -748,6 +748,10 @@ pub fn setMode(self: *Window, mode: terminal.Mode, enabled: bool) !void {
             self.terminal.setCursorPos(1, 1);
         },
 
+        .autowrap => {
+            self.terminal.mode_autowrap = enabled;
+        },
+
         .bracketed_paste => self.bracketed_paste = true,
 
         else => if (enabled) log.warn("unimplemented mode: {}", .{mode}),

src/terminal/Terminal.zig

@@ -44,6 +44,7 @@ scrolling_region: ScrollingRegion,
 /// Modes
 // TODO: turn into a bitset probably
 mode_origin: bool = false,
+mode_autowrap: bool = true,
 mode_reverse_colors: bool = false,
 
 /// Scrolling region is the area of the screen designated where scrolling
@@ -202,7 +203,7 @@ pub fn print(self: *Terminal, c: u21) !void {
     defer tracy.end();
 
     // If we're soft-wrapping, then handle that first.
-    if (self.cursor.pending_wrap) {
+    if (self.cursor.pending_wrap and self.mode_autowrap) {
         // Mark that the cell is wrapped, which guarantees that there is
         // at least one cell after it in the next row.
         const cell = self.screen.getCell(self.cursor.y, self.cursor.x);

src/terminal/ansi.zig

@@ -50,6 +50,9 @@ pub const Mode = enum(u16) {
     /// the current scroll region.
     origin = 6,
 
+    /// Enable or disable automatic line wrapping.
+    autowrap = 7,
+
     /// Bracket clipboard paste contents in delimiter sequences.
     ///
     /// When pasting from the (e.g. system) clipboard add "ESC [ 2 0 0 ~"