feat: Implement line wrapping with toggle and CLI option

gtm

@@ -123,6 +123,9 @@ class AppState:
     last_bstate: int = 0
     mouse_x: int = -1
     mouse_y: int = -1
+    
+    # Line wrapping settings
+    wrap_lines: bool = True
 
 # --- Actions (Controller) ---
 
@@ -272,21 +275,57 @@ def draw_right_pane(stdscr, state):
         line_type = line_info['type']
         content = line_info['content']
         
+        # Determine prefix based on line type and diff mode
+        prefix = ""
         if line_type == 'added':
-            stdscr.addstr(display_row, right_start, "+ ", curses.color_pair(3))
+            prefix = "+ "
-            stdscr.addnstr(display_row, right_start + 2, content, right_width - 2, curses.color_pair(3))
+            attr = curses.color_pair(3)
         elif line_type == 'deleted':
-            stdscr.addstr(display_row, right_start, "- ", curses.color_pair(4))
+            prefix = "- "
-            stdscr.addnstr(display_row, right_start + 2, content, right_width - 2, curses.color_pair(4))
+            attr = curses.color_pair(4)
         else:
             if state.show_whole_diff or state.show_additions or state.show_deletions:
-                stdscr.addstr(display_row, right_start, "  ")
+                prefix = "  "
-                stdscr.addnstr(display_row, right_start + 2, content, right_width - 2)
+            attr = curses.A_NORMAL
-            else:
-                # No diff mode, so don't add the margin padding
-                stdscr.addnstr(display_row, right_start, content, right_width)
         
-        display_row += 1
+        # Calculate available width for content
+        content_start = right_start + len(prefix)
+        available_width = right_width - len(prefix)
+        
+        # Handle line wrapping
+        if len(content) <= available_width:
+            # Line fits, no wrapping needed
+            if prefix:
+                stdscr.addstr(display_row, right_start, prefix, attr)
+            stdscr.addnstr(display_row, content_start, content, available_width, attr)
+            display_row += 1
+        else:
+            # Line needs wrapping
+            remaining = content
+            first_line = True
+            
+            while remaining and display_row < state.height - 2:
+                # For first line, add the prefix
+                if first_line:
+                    if prefix:
+                        stdscr.addstr(display_row, right_start, prefix, attr)
+                    chunk = remaining[:available_width]
+                    stdscr.addnstr(display_row, content_start, chunk, available_width, attr)
+                    remaining = remaining[available_width:]
+                    first_line = False
+                else:
+                    # For continuation lines, indent by 2 spaces
+                    indent = "  "
+                    indent_start = right_start
+                    content_start = indent_start + len(indent)
+                    wrap_width = right_width - len(indent)
+                    
+                    stdscr.addstr(display_row, indent_start, indent)
+                    chunk = remaining[:wrap_width]
+                    stdscr.addnstr(display_row, content_start, chunk, wrap_width, attr)
+                    remaining = remaining[wrap_width:]
+                
+                display_row += 1
 
 def draw_divider(stdscr, state):
     if not state.show_sidebar:
@@ -364,6 +403,10 @@ def draw_status_bars(stdscr, state):
         if len(parts) >= 4:
             commit_message = parts[3]
     
+    # Add wrap indicator to commit message
+    wrap_indicator = " [W] " if state.wrap_lines else " [NW] "
+    commit_message = wrap_indicator + commit_message
+    
     # Status bar percentages
     if len(state.file_lines) > 0:
         last_visible_line = state.right_scroll_offset + visible_height
@@ -587,6 +630,8 @@ def handle_keyboard_input(key, state: AppState) -> AppState:
             return replace(state, should_exit=True)
     elif key == ord('s'):
         return toggle_sidebar(state)
+    elif key == ord('w'):
+        return replace(state, wrap_lines=not state.wrap_lines)
     elif key in [curses.KEY_LEFT, ord('h')]:
         if state.show_sidebar:
             return replace(state, focus="left")
@@ -616,7 +661,7 @@ def handle_keyboard_input(key, state: AppState) -> AppState:
 
 # --- Main Application ---
 
-def main(stdscr, filename, show_diff, show_add, show_del, mouse):
+def main(stdscr, filename, show_diff, show_add, show_del, mouse, wrap_lines=True):
     try:
         curses.curs_set(0)
     except:
@@ -637,7 +682,8 @@ def main(stdscr, filename, show_diff, show_add, show_del, mouse):
         filename=filename, width=width, height=height,
         show_whole_diff=show_diff, show_additions=show_add,
         show_deletions=show_del, enable_mouse=mouse,
-        commits=get_commits(filename)
+        commits=get_commits(filename),
+        wrap_lines=wrap_lines
     )
     
     if state.enable_mouse:
@@ -695,6 +741,7 @@ if __name__ == "__main__":
     parser.add_argument("--diff-additions", action="store_true", help="Highlight newly added lines in green")
     parser.add_argument("--diff-deletions", action="store_true", help="Show deleted lines in red")
     parser.add_argument("--no-mouse", action="store_true", help="Disable mouse support")
+    parser.add_argument("--no-wrap", action="store_true", help="Disable line wrapping")
     parser.add_argument("-v", "--version", action="store_true", help="Show version number")
     parser.add_argument("filename", nargs="?", help="File to view history for")
     
@@ -713,4 +760,4 @@ if __name__ == "__main__":
         print(f"Error: File '{filename}' does not exist")
         sys.exit(1)
         
-    curses.wrapper(main, filename, args.diff, args.diff_additions, args.diff_deletions, not args.no_mouse)
+    curses.wrapper(main, filename, args.diff, args.diff_additions, args.diff_deletions, not args.no_mouse, not args.no_wrap)