[PATCH 0/3] knotty: Add automatic pager support

[Rob Woolley <rob.woolley@windriver.com>]

The bitbake show_versions (-s) and show_environment (-e) commands provide
a lot of non-interactive output.  Even experienced users will sometimes
forget to page the output.

This series adds a feature to automatically page these commands when
using the knotty user interface.  It doesn't affect any other commands
and is designed to work in a similar fashion to the auto-paging in git.

This was tested with bitbake -s and bitbake -s | less (and -e) to ensure that
there were no regressions.  This includes testing broken pipe conditions
caused by quitting the pager before the full output has been sent through
the pipe.

knotty: Catch exceptions on broken pipes
 lib/bb/ui/knotty.py |   43 ++++++++++++++++++++++++-------------------
 1 file changed, 24 insertions(+), 19 deletions(-)

knotty: Do not log show_versions output
 lib/bb/ui/knotty.py |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

knotty: Add automatic paging for bitbake -s and -e
 lib/bb/ui/knotty.py |   46 +++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 43 insertions(+), 3 deletions(-)