pager and stderr

[Bryan O'Sullivan]

On Fri, Nov 20, 2015 at 4:02 PM, Durham Goode <durham at fb.com> wrote:

> If stderr didn't go to the pager, wouldn't it just get written out on top
> of the pager's output?  Like, if we ran 'hg log' and it encountered an
> exception after having filled a page with text, would the exception get
> dumped to stderr mess up the existing pager output?
>

Yes, it would cause the existing output to be overwritten in some way,
which typically you can clear by tapping ^L (at the cost of losing the
traceback).

I guess I could add a grotesque hack to the pager extension and USR1
handler that would write the USR1 traceback directly to the "real" stderr
if it exists. Ugh, right?
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