===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/tmux/grid-reader.c,v
retrieving revision 1.3
retrieving revision 1.4
diff -c -r1.3 -r1.4
*** src/usr.bin/tmux/grid-reader.c	2021/03/09 08:24:09	1.3
--- src/usr.bin/tmux/grid-reader.c	2021/04/05 08:43:48	1.4
***************
*** 1,4 ****
! /* $OpenBSD: grid-reader.c,v 1.3 2021/03/09 08:24:09 nicm Exp $ */
  
  /*
   * Copyright (c) 2020 Anindya Mukherjee <anindya49@hotmail.com>
--- 1,4 ----
! /* $OpenBSD: grid-reader.c,v 1.4 2021/04/05 08:43:48 nicm Exp $ */
  
  /*
   * Copyright (c) 2020 Anindya Mukherjee <anindya49@hotmail.com>
***************
*** 71,77 ****
  
  /* Move cursor back one position. */
  void
! grid_reader_cursor_left(struct grid_reader *gr)
  {
  	struct grid_cell	gc;
  
--- 71,77 ----
  
  /* Move cursor back one position. */
  void
! grid_reader_cursor_left(struct grid_reader *gr, int wrap)
  {
  	struct grid_cell	gc;
  
***************
*** 81,87 ****
  			break;
  		gr->cx--;
  	}
! 	if (gr->cx == 0 && gr->cy > 0) {
  		grid_reader_cursor_up(gr);
  		grid_reader_cursor_end_of_line(gr, 0, 0);
  	} else if (gr->cx > 0)
--- 81,89 ----
  			break;
  		gr->cx--;
  	}
! 	if (gr->cx == 0 && gr->cy > 0 &&
! 	    (wrap ||
! 	     grid_get_line(gr->gd, gr->cy - 1)->flags & GRID_LINE_WRAPPED)) {
  		grid_reader_cursor_up(gr);
  		grid_reader_cursor_end_of_line(gr, 0, 0);
  	} else if (gr->cx > 0)
***************
*** 362,365 ****
--- 364,389 ----
  		xx = grid_line_length(gr->gd, py - 2);
  	}
  	return 0;
+ }
+ 
+ /* Jump back to the first non-blank character of the line. */
+ void
+ grid_reader_cursor_back_to_indentation(struct grid_reader *gr)
+ {
+ 	struct grid_cell	gc;
+ 	u_int			px, py, xx, yy;
+ 
+ 	yy = gr->gd->hsize + gr->gd->sy - 1;
+ 	grid_reader_cursor_start_of_line(gr, 1);
+ 
+ 	for (py = gr->cy; py <= yy; py++) {
+ 		xx = grid_line_length(gr->gd, py);
+ 		for (px = 0; px < xx; px++) {
+ 			grid_get_cell(gr->gd, px, py, &gc);
+ 			if (gc.data.size != 1 || *gc.data.data != ' ')
+ 				break;
+ 		}
+ 		if (~grid_get_line(gr->gd, py)->flags & GRID_LINE_WRAPPED)
+ 			break;
+ 	}
  }