patch 8.2.4436: crash with weird 'vartabstop' value Commit: https://github.com/vim/vim/commit/4e889f98e95ac05d7c8bd3ee933ab4d47820fdfa Author: Bram Moolenaar <Bram@vim.org> Date: Mon Feb 21 19:36:12 2022 +0000 patch 8.2.4436: crash with weird 'vartabstop' value Problem: Crash with weird 'vartabstop' value. Solution: Check for running into the end of the line.

--- a/src/indent.c
+++ b/src/indent.c
@@ -1338,6 +1338,8 @@ change_indent(
 		new_cursor_col += (*mb_ptr2len)(ptr + new_cursor_col);
 	    else
 		++new_cursor_col;
+	    if (ptr[new_cursor_col] == NUL)
+		break;
 	    vcol += lbr_chartabsize(ptr, ptr + new_cursor_col, (colnr_T)vcol);
 	}
 	vcol = last_vcol;