[Bug default/21030] New: Tell about filtered out functions and variables changes that were impacted by a particular type change.

["dodji at redhat dot com" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=21030

            Bug ID: 21030
           Summary: Tell about filtered out functions and variables
                    changes that were impacted by a particular type
                    change.
           Product: libabigail
           Version: unspecified
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: default
          Assignee: dodji at redhat dot com
          Reporter: dodji at redhat dot com
                CC: libabigail at sourceware dot org
  Target Milestone: ---

Today in ABI change reports, each type change is shown just once even if that
type change impacts other functions or variables.

The other functions or variables that are impacted by the same type change are
not mentioned by default; their changes are filtered out to improve the
signal/noise ratio.  Users willing to see redundant changes can provide the
--redundant command line option to avoid having redundant changes being
filtered out.

That is all good and everything.

But then, it would be very useful for users that the change report says
explicitly that for a particular type change there were other
functions/variables that were impacted and that were filtered out.  Otherwise,
people tend to think that the function they are looking at is the only one that
was impacted.

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