Re: [PATCH v4 7/7] t7006-pager: if stdout is not a terminal, make a new one

> Testing pagination requires (fake or real) access to a terminal so we
> can see whether the pagination automatically kicks in, which makes it
> hard to get good coverage when running tests without --verbose.  There
> are a number of ways to work around that:
> 
>  - Replace all isatty calls with calls to a custom xisatty wrapper
>    that usually checks for a terminal but can be overridden for tests.
>    This would be workable, but it would require implementing xisatty
>    separately in three languages (C, shell, and perl) and making sure
>    that any code that is to be tested always uses the wrapper.
> 
>  - Redirect stdout to /dev/tty.  This would be problematic because
>    there might be no terminal available, and even if a terminal is
>    available, it might not be appropriate to spew output to it.
> 
>  - Create a new pseudo-terminal on the fly and capture its output.
> 
> This patch implements the third approach.