fix(compatibility): fix bash linewrap (#109)

src/terminal_pane/scroll.rs

@@ -384,7 +384,7 @@ impl Scroll {
             .get_mut(wrapped_fragment_index_in_line)
             .expect("cursor out of bounds");
 
-        if cursor_position_in_line <= self.total_columns {
+        if cursor_position_in_line < self.total_columns {
             current_wrapped_fragment.add_character(terminal_character, cursor_position_in_line);
             self.cursor_position.move_forward(1);
         } else {

src/tests/integration/compatibility.rs

@@ -363,3 +363,28 @@ pub fn neovim_insert_mode() {
         assert_snapshot!(snapshot);
     }
 }
+
+#[test]
+pub fn bash_cursor_linewrap() {
+    // this test makes sure that when we enter a command that is beyond the screen border, that it
+    // immediately goes down one line
+    let fake_win_size = PositionAndSize {
+        columns: 116,
+        rows: 28,
+        x: 0,
+        y: 0,
+    };
+    let fixture_name = "bash_cursor_linewrap";
+    let mut fake_input_output = get_fake_os_input(&fake_win_size, fixture_name);
+    fake_input_output.add_terminal_input(&[&COMMAND_TOGGLE, &COMMAND_TOGGLE, &QUIT]);
+    start(Box::new(fake_input_output.clone()), Opt::default());
+    let output_frames = fake_input_output
+        .stdout_writer
+        .output_frames
+        .lock()
+        .unwrap();
+    let snapshots = get_output_frame_snapshots(&output_frames, &fake_win_size);
+    for snapshot in snapshots {
+        assert_snapshot!(snapshot);
+    }
+}

src/tests/integration/snapshots/mosaic__tests__integration__compatibility__bash_cursor_linewrap-2.snap

@@ -0,0 +1,32 @@
+---
+source: src/tests/integration/compatibility.rs
+expression: snapshot
+---
+⋊> ~/c/mosaic on main ⨯ bash                                                                                16:00:06
+[aram@green mosaic]$ 12345678912345678912345678912345678912345678912345678912345678912345678912345678912345678912345
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+Bye from Mosaic!█                                                                                                   

src/tests/integration/snapshots/mosaic__tests__integration__compatibility__bash_cursor_linewrap.snap

@@ -0,0 +1,32 @@
+---
+source: src/tests/integration/compatibility.rs
+expression: snapshot
+---
+Welcome to fish, the friendly interactive shell                                                                     
+⋊> ~/c/mosaic on main ⨯ bash                                                                                16:00:06
+[aram@green mosaic]$ 12345678912345678912345678912345678912345678912345678912345678912345678912345678912345678912345
+█                                                                                                                   
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