issue_comments: 1444474487

I think I see what is happening here, although I haven't quite work out a fix yet. Usually:

• click.progressbar.render_progress() renders the cursor invisible on each invocation (update of the bar)
• When the progress bar goes out of scope, the __exit()__ method is invoked, which calls render_finish() to make the cursor re-appear.

(See terminal escape sequences BEFORE_BAR and AFTER_BAR in click).

However the sqlite-utils utils.file_progress context manager wraps click.progressbar and yields an instance of a helper class:

python @contextlib.contextmanager def file_progress(file, silent=False, **kwargs): ... with click.progressbar(length=file_length, **kwargs) as bar: yield UpdateWrapper(file, bar.update)

The yielded UpdateWrapper goes out of scope quickly and click.progressbar.__exit__() is called. The cursor is made un-invisible. Hoewever bar is still live and so when the caller iterates on the yielded wrapper this invokes the bar's update method, calling render_progress(), each time printing the "make cursor invisible" escape code. The progressbar.__exit__ function is not called again, so the cursor doesn't re-appear.